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Linear thoughts

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w7aqk

Re: Linear thoughts

Hi All,

I don't really have an oar in this debate, since I am 99.99% sure I won't be
buying one--a 1500 watt linear, that is. However, it seems to me that all
this advice to Eric should include some reasonable estimate of what one
would be willing to pay for it!!! So far, I think I've only seen one such
estimate--3 times the cost of a KPA500, which is probably a fair guess! If
you throw in the upgraded tuner, you are talking $7500 or so! Wow! $5000
more just to gain slightly less than 1 S unit! I like to think in terms of
$/S unit, rather than $/watt. The latter seems meaningless at this level!

Well, some folks will probably spend that in a heartbeat! I guess that's
about what the new Flex amp everyone is talking about will cost. If
Elecraft could do it for much less, they may be on to something! Still, at
this price level, a few hundred bucks one way or another may not mean that
much. Nonetheless, I think we do need some feel for a price point to keep
appetites in check.

For what it is worth, I think keeping the ATU external gives people an
opportunity to control cost somewhat. A big plus would be access to
Elecraft support!

Even sitting on the sidelines this is rather fascinating!

Dave W7AQK

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Rick WA6NHC-2

Re: Linear thoughts

In reply to this post by Eric Swartz - WA6HHQ

I've had pretty good success with the KPA500, but since you asked,
another couple S units is always better than less. If you don't need
1500 out, dial it back. You can't push a smaller amp up, but you can
throttle a large amp down... there if you need it.

Matching automatic tuner with the K3 and KAT 10:1 range (stuff happens,
give it room to compensate), built in; more than 3 antenna ports.
Consider SO2R modes for contesters (multiple inputs).

Enough power supply and transistor overhead to be able to 'comfortably'
run at full power on RTTY, or whatever abusive mode is needed.

QUIET. Period, quiet. Both to the ears and nearby stations (clean amp)

Keep the drive required from the K3 low for a cleaner overall
transmission (reduce IMD).

The usual Elecraft quality with total integration.

I suspect that your main issue will be in keeping the cost competitive.

Rick NHC (one HAPPY customer)

On 3/17/2017 10:06 AM, Eric Swartz - WA6HHQ, Elecraft wrote:

> Interesting discussion.
>
> Folks, if we did introduce a 1500 W solid state amp similar to our
> KPA500 in operation, what features etc would be important?
>
> 73,
> Eric
> /elecraft.com/
>
>
> ______________________________________________________________
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K7TV

Re: Linear thoughts

In reply to this post by john@kk9a.com

Regarding spending capacity, I agree that the Elecraft KPA1500 with tuner
would be too expensive to appeal to a lot of people, including myself.
However, looking back I can see that I have been able to spend a smaller but
substantial amount several times. A modular approach to the design would
make it possible to get to 500W first, for a price not too different from
the KPA500, and then add modules/capability later. This approach also makes
more sense for hams in countiries where 1500W or even 1000W is not allowed.
Combining lower power modules leads to higher production numbers, which
should help reduce per-unit cost.

73,
Erik K7TV

-----Original Message-----
From: Elecraft [mailto:[hidden email]] On Behalf Of w7aqk
Sent: Friday, March 17, 2017 6:59 PM
To: Elecraft Reflector <[hidden email]>
Subject: Re: [Elecraft] Linear thoughts

Hi All,

I don't really have an oar in this debate, since I am 99.99% sure I won't be
buying one--a 1500 watt linear, that is. However, it seems to me that all
this advice to Eric should include some reasonable estimate of what one
would be willing to pay for it!!! So far, I think I've only seen one such
estimate--3 times the cost of a KPA500, which is probably a fair guess! If
you throw in the upgraded tuner, you are talking $7500 or so! Wow! $5000
more just to gain slightly less than 1 S unit! I like to think in terms of
$/S unit, rather than $/watt. The latter seems meaningless at this level!

Well, some folks will probably spend that in a heartbeat! I guess that's
about what the new Flex amp everyone is talking about will cost. If
Elecraft could do it for much less, they may be on to something! Still, at
this price level, a few hundred bucks one way or another may not mean that
much. Nonetheless, I think we do need some feel for a price point to keep
appetites in check.

For what it is worth, I think keeping the ATU external gives people an
opportunity to control cost somewhat. A big plus would be access to
Elecraft support!

Even sitting on the sidelines this is rather fascinating!

Dave W7AQK

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Jim AB3CV

Re: Linear thoughts

In reply to this post by Jim AB3CV

Forgot to mention:

I hate the fan noise of the ACOM1500. KPA1500 should emulate the KPA500,
noise only when necessary!

On Fri, Mar 17, 2017 at 9:56 PM, Jim Miller <[hidden email]> wrote:

> TLDR version: Basically I want a full legal limit key down version of the
> KPA500 and a companion ala KAT1500
>
> Details:
>
> I recently purchased a ACOM1500 while biding my time for a KPA1500. (I
> already have a KPA500 and really like it.)
>
> Things I don't like about this tube amp::
> 1. Tuning
> 2. Waiting for warm up
> 3. No chance of remote operation
> 4. Not capable of 1500w on 6M JT65 (~1minute key down)
> 5. Not capable of 1500w RTTY
> 6. Obviously not integrated with K3 wrt band changing.
>
> What I want:
> 1. Full legal limit 160 thru 6m including for JT65 (including 6m for EME
> ~1minute key down) and RTTY. I like that I don't have to baby the KPA500.
> 2. Full integration with K3 ala KPA500. Band changing, per band power, etc.
> 3. KAT1500 built in or separate (doesn't matter). Needed primarily for 80m
> vertical and 160 inverted L which is likely what almost everyone needs. 160
> SWR needs at least 3:1 and preferably 5:1 capability, ditto 80m. I use a
> single 7/8" hardline to a remote antenna switch. Loss is minimal for 80 and
> 160. Other bands are served by Steppir or monoband 6m.
> 4. Must be capable of remote operation as least as good as KPA500, e.g.,
> ON/OFF, status monitoring, fault recovery, fault reporting. I'm sure
> remoting is in my future in my next QTH choice.
> 5. QSK. I like being able to hear when the DX is responding and kill my
> call when I hear it.
> 6. Most importantly Elecraft quality, service and support!
>
> Some thoughts:
> I really don't care if the PSU is integrated or not but I'd like a profile
> similar to the KPA500 if possible. I like having the KPA (KAT on top) aside
> the P3/K3s which sit nicely below my wall mounted monitors. Excellent
> ergonomics.
>
> Making the PSU switchable between 110 and 220 (for NA) and limiting output
> accordingly would make it possible to serve 1KW and 1.5KW market with a
> single amp which would be upgradable by running 220 to the shack. Might
> broaden the appeal.
>
> Remote operation is important as we will likely be downsizing and as a
> result my rig will be at my daughter's house where I will have occasional
> access for contesting but most of my DXing will be remotely from my house.
> Great remote operation is a must.
>
> 73
>
> jim ab3cv (credit card ready for immediate purchase!)
>
>
> On Fri, Mar 17, 2017 at 1:06 PM, Eric Swartz - WA6HHQ, Elecraft <
> [hidden email]> wrote:
>
>> Interesting discussion.
>>
>> Folks, if we did introduce a 1500 W solid state amp similar to our KPA500
>> in operation, what features etc would be important?
>>
>> 73,
>> Eric
>> /elecraft.com/
>>
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
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>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
>>
>
>

Jim AB3CV

Re: Linear thoughts

and I didn't mention price because I really don't care. Not that I'm loaded
but I know that what I'm asking for isn't cheap. But I've always found
Elecraft to be excellent value for the money.

nuff said.

jim ab3cv

On Fri, Mar 17, 2017 at 10:19 PM, Jim Miller <[hidden email]> wrote:

> Forgot to mention:
>
> I hate the fan noise of the ACOM1500. KPA1500 should emulate the KPA500,
> noise only when necessary!
>
> On Fri, Mar 17, 2017 at 9:56 PM, Jim Miller <[hidden email]> wrote:
>
>> TLDR version: Basically I want a full legal limit key down version of the
>> KPA500 and a companion ala KAT1500
>>
>> Details:
>>
>> I recently purchased a ACOM1500 while biding my time for a KPA1500. (I
>> already have a KPA500 and really like it.)
>>
>> Things I don't like about this tube amp::
>> 1. Tuning
>> 2. Waiting for warm up
>> 3. No chance of remote operation
>> 4. Not capable of 1500w on 6M JT65 (~1minute key down)
>> 5. Not capable of 1500w RTTY
>> 6. Obviously not integrated with K3 wrt band changing.
>>
>> What I want:
>> 1. Full legal limit 160 thru 6m including for JT65 (including 6m for EME
>> ~1minute key down) and RTTY. I like that I don't have to baby the KPA500.
>> 2. Full integration with K3 ala KPA500. Band changing, per band power,
>> etc.
>> 3. KAT1500 built in or separate (doesn't matter). Needed primarily for
>> 80m vertical and 160 inverted L which is likely what almost everyone needs.
>> 160 SWR needs at least 3:1 and preferably 5:1 capability, ditto 80m. I use
>> a single 7/8" hardline to a remote antenna switch. Loss is minimal for 80
>> and 160. Other bands are served by Steppir or monoband 6m.
>> 4. Must be capable of remote operation as least as good as KPA500, e.g.,
>> ON/OFF, status monitoring, fault recovery, fault reporting. I'm sure
>> remoting is in my future in my next QTH choice.
>> 5. QSK. I like being able to hear when the DX is responding and kill my
>> call when I hear it.
>> 6. Most importantly Elecraft quality, service and support!
>>
>> Some thoughts:
>> I really don't care if the PSU is integrated or not but I'd like a
>> profile similar to the KPA500 if possible. I like having the KPA (KAT on
>> top) aside the P3/K3s which sit nicely below my wall mounted monitors.
>> Excellent ergonomics.
>>
>> Making the PSU switchable between 110 and 220 (for NA) and limiting
>> output accordingly would make it possible to serve 1KW and 1.5KW market
>> with a single amp which would be upgradable by running 220 to the shack.
>> Might broaden the appeal.
>>
>> Remote operation is important as we will likely be downsizing and as a
>> result my rig will be at my daughter's house where I will have occasional
>> access for contesting but most of my DXing will be remotely from my house.
>> Great remote operation is a must.
>>
>> 73
>>
>> jim ab3cv (credit card ready for immediate purchase!)
>>
>>
>> On Fri, Mar 17, 2017 at 1:06 PM, Eric Swartz - WA6HHQ, Elecraft <
>> [hidden email]> wrote:
>>
>>> Interesting discussion.
>>>
>>> Folks, if we did introduce a 1500 W solid state amp similar to our
>>> KPA500 in operation, what features etc would be important?
>>>
>>> 73,
>>> Eric
>>> /elecraft.com/
>>>
>>>
>>> ______________________________________________________________
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:[hidden email]
>>>
>>> This list hosted by: http://www.qsl.net
>>> Please help support this email list: http://www.qsl.net/donate.html
>>> Message delivered to [hidden email]
>>>
>>
>>
>

Wes Stewart-2

Re: Linear thoughts

In reply to this post by Gary K9GS

You haven't been paying attention. I asked for both of those.

On 3/17/2017 5:20 PM, Gary K9GS wrote:
> A lot of great suggestions but two I have not seen discussed:
>
> 1) I really like the idea of a separate power supply simply because if the
> amp has to ever go in for service or be shipped it is a lot easier without a
> heavy power supply inside the cabinet. Just send the RF deck to Elecraft.
>
> 2) I like the idea of an optional INTERNAL tuner. Makes it nice and clean
> for those that need a tuner without a rats nest of Y cables, etc. If there is
> going to be an external tuner make it weatherproof so you can put it OUTSIDE.

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DaleJ

Re: Linear thoughts

In reply to this post by john@kk9a.com

A box which has a combiner for using two KPA500’s in unison plus pre-distortion.

Dale, K9VUJ
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Philip Alley

Re: Linear Thoughts

In reply to this post by john@kk9a.com

Instead on just another linear ( yawn!) why not apply the considerable Elecraft talents to developing a non linear highly efficient ( and light) all mode amp via the path described in this month's QEX?

Phil
AA2EA
Louisville

Sent from my iPhone

> On Mar 17, 2017, at 4:51 PM, [hidden email] wrote:
>
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> Today's Topics:
>
> 1. Re: Linear thoughts (Alan. G4GNX)
> 2. Re: Linear thoughts (Peter LaBissoniere)
> 3. Re: Linear thoughts (Charlie Carroll)
> 4. Re: Linear thoughts ([hidden email])
> 5. Re: Linear thoughts (Wes Stewart)
> 6. Re: Linear thoughts (Wayne Burdick)
> 7. Re: Linear thoughts (Bud Semon)
> 8. Re: Linear thoughts (Kevin - K4VD)
> 9. Linear thoughts (Chuck Chandler)
> 10. Re: Linear thoughts (Guy Olinger K2AV)
> 11. New release of Win4K3Suite (Tom)
> 12. R: Re: Linear thoughts ([hidden email])
> 13. win4k3+hrd+dm780 (buddy s)
> 14. Re: Linear thoughts (Chris Tate - N6WM)
> 15. Re: Preamp 2 and upcoming F/W (Wayne Burdick)
> 16. Re: Linear thoughts (Mitch)
> 17. OT: RFI problem on 80,40 with AT&T Uverse (John Saxon)
> 18. Re: (Elecraft) Linear thoughts (Thomas Donohue)
> 19. Re: OT: RFI problem on 80,40 with AT&T Uverse (Fred Moore)
> 20. Re: Linear thoughts (Bert Garcia N8NN)
> 21. Re: Linear thoughts (brian)
> 22. Re: OT: RFI problem on 80,40 with AT&T Uverse (brian)
> 23. Re: Linear thoughts (John Fritze)
> 24. Re: Linear thoughts (Wes Stewart)
> 25. Re: Linear thoughts ([hidden email])
> 26. Re: OT: RFI problem on 80,40 with AT&T Uverse (Mike Flowers)
> 27. Re: Linear thoughts (Clay Autery)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 17 Mar 2017 18:01:36 -0000
> From: "Alan. G4GNX" <[hidden email]>
> To: "Gerald Manthey" <[hidden email]>, "Eric Swartz - WA6HHQ,
> Elecraft" <[hidden email]>
> Cc: <[hidden email]>
> Subject: Re: [Elecraft] Linear thoughts
> Message-ID: <73DF0824F12343439B9563F6C1F324DC@G4GNXLaptop>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
> Also, same facilities as KPA500 and built in KAT1500 tuner.
>
> 73,
>
> Alan. G4GNX
>
> -----Original Message-----
> From: Gerald Manthey
> Sent: Friday, March 17, 2017 5:24 PM
> To: Eric Swartz - WA6HHQ, Elecraft
> Cc: [hidden email]
> Subject: Re: [Elecraft] Linear thoughts
>
> Super quiet fans! Full duty cycle.
>
>
>> On Mar 17, 2017, at 12:06 PM, Eric Swartz - WA6HHQ, Elecraft
>> <[hidden email]> wrote:
>>
>> Interesting discussion.
>>
>> Folks, if we did introduce a 1500 W solid state amp similar to our KPA500
>> in operation, what features etc would be important?
>>
>> 73,
>> Eric
>> /elecraft.com/
>
>
>
> ------------------------------
>
> Message: 2
> Date: Fri, 17 Mar 2017 13:02:27 -0500
> From: Peter LaBissoniere <[hidden email]>
> To: "Eric Swartz - WA6HHQ, Elecraft" <[hidden email]>
> Cc: [hidden email]
> Subject: Re: [Elecraft] Linear thoughts
> Message-ID: <[hidden email]>
> Content-Type: text/plain; charset=us-ascii
>
> KPA-500 trade-in program.
>
> Sent from my iPhone
>
>> On Mar 17, 2017, at 12:06 PM, Eric Swartz - WA6HHQ, Elecraft <[hidden email]> wrote:
>>
>> Interesting discussion.
>>
>> Folks, if we did introduce a 1500 W solid state amp similar to our KPA500 in operation, what features etc would be important?
>>
>> 73,
>> Eric
>> /elecraft.com/
>>
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
>
>
>
> ------------------------------
>
> Message: 3
> Date: Fri, 17 Mar 2017 14:12:51 -0400
> From: Charlie Carroll <[hidden email]>
> To: Andrew Faber <[hidden email]>, Andrew Faber via Elecraft
> <[hidden email]>, [hidden email], "Eric Swartz -
> WA6HHQ, Elecraft" <[hidden email]>
> Subject: Re: [Elecraft] Linear thoughts
> Message-ID: <[hidden email]>
> Content-Type: text/plain; charset=UTF-8
>
> Strongly concur!
>
> Think serious contesting and airline carry-on, weight, weight ..., continuous contest operation, prefer solid basic operation over bells and whistles (or make bells/whistles an option).
>
> 73 charlie k1xx/vp2mmf
>
>> On March 17, 2017 1:18:39 PM EDT, Andrew Faber via Elecraft <[hidden email]> wrote:
>> Eric,
>> Hallelujah! First acknowledgment of such a possibility! I vote to put
>> a
>> second amp module in the RF Deck (i.e., an RF deck that is the same as
>> the
>> total size of the KPA500) and have a separate switching supply in
>> another
>> box. 1200-1300 watts would be a sweet spot if 1.5K is a problem. Shoot
>> for
>> 30 pounds or under.
>> 73, andy ae6y (KPA500 ser. 77).
>>
>> -----Original Message-----
>> From: Eric Swartz - WA6HHQ, Elecraft
>> Sent: Friday, March 17, 2017 10:06 AM
>> To: [hidden email]
>> Subject: Re: [Elecraft] Linear thoughts
>>
>> Interesting discussion.
>>
>> Folks, if we did introduce a 1500 W solid state amp similar to our
>> KPA500 in
>> operation, what features etc would be important?
>>
>> 73,
>> Eric
>> /elecraft.com/
>>
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
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>>
>> ______________________________________________________________
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>
> --
> Sent from my Android device with K-9 Mail. Please excuse my brevity.
>
> ------------------------------
>
> Message: 4
> Date: Fri, 17 Mar 2017 14:11:58 -0400
> From: [hidden email]
> To: [hidden email]
> Cc: [hidden email]
> Subject: Re: [Elecraft] Linear thoughts
> Message-ID: <[hidden email]>
> Content-Type: text/plain; charset="US-ASCII"
>
> 1. Separate power supply or small control box (ala ACOM 2000A). Same
> form factor as K line if separate power supply (small control box able to
> control an integral or separate "KAT1500" as well).
> 2. Solid state.
> 3. Full integration with K line similar to KPA500 and easy integration
> with other radios including KX3 & KX2.
> 4. 160-6m.
> 5. 1500 W.
> 6. True SO2R capable with K line and other radios (SPE 1.3K is almost
> there).
> 7. Integral antenna tuner or "KAT1500".
> 8. Easily user modified to get rid of antiquated 15db gain limit.
> 9. Clean TX throughout entire power range on a par with K3s.
> 10. Easily remotable.
> 11. QSK with adjustable parameters.
>
> Mike KD8RQE
>
>
> In a message dated 3/17/2017 1:12:20 P.M. Eastern Daylight Time,
> [hidden email] writes:
>
> Interesting discussion.
>
> Folks, if we did introduce a 1500 W solid state amp similar to our KPA500
> in
> operation, what features etc would be important?
>
> 73,
> Eric
> /elecraft.com/
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>
>
>
> ------------------------------
>
> Message: 5
> Date: Fri, 17 Mar 2017 11:14:10 -0700
> From: Wes Stewart <[hidden email]>
> To: [hidden email]
> Subject: Re: [Elecraft] Linear thoughts
> Message-ID: <[hidden email]>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> Three times the power, one-third the cost?
>
> Somewhat more seriously: legal limit, internal tuner for up to at least 3:1 SWR
> (option?), optional separate power supply, quieter cooling. Bigger box to match K4.
>
> Wes N7WS
>
>> On 3/17/2017 10:06 AM, Eric Swartz - WA6HHQ, Elecraft wrote:
>> Interesting discussion.
>>
>> Folks, if we did introduce a 1500 W solid state amp similar to our KPA500 in
>> operation, what features etc would be important?
>>
>> 73,
>> Eric
>> /elecraft.com/
>>
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
>>
>
>
>
> ------------------------------
>
> Message: 6
> Date: Fri, 17 Mar 2017 11:21:21 -0700
> From: Wayne Burdick <[hidden email]>
> To: Wes Stewart <[hidden email]>
> Cc: [hidden email]
> Subject: Re: [Elecraft] Linear thoughts
> Message-ID: <[hidden email]>
> Content-Type: text/plain; charset=us-ascii
>
>
>> On Mar 17, 2017, at 11:14 AM, Wes Stewart <[hidden email]> wrote:
>>
>> Three times the power, one-third the cost?
>>
>> Somewhat more seriously: legal limit, internal tuner for up to at least 3:1 SWR (option?), optional separate power supply, quieter cooling. Bigger box to match K4.
>
> The what?
>
>
>>
>> Wes N7WS
>>
>>> On 3/17/2017 10:06 AM, Eric Swartz - WA6HHQ, Elecraft wrote:
>>> Interesting discussion.
>>>
>>> Folks, if we did introduce a 1500 W solid state amp similar to our KPA500 in operation, what features etc would be important?
>>>
>>> 73,
>>> Eric
>>> /elecraft.com/
>
>
>
>
>
> ------------------------------
>
> Message: 7
> Date: Fri, 17 Mar 2017 11:27:44 -0700
> From: Bud Semon <[hidden email]>
> To: "Eric Swartz - WA6HHQ, Elecraft" <[hidden email]>,
> [hidden email]
> Subject: Re: [Elecraft] Linear thoughts
> Message-ID:
> <CACZ1TN1SApqeFP=[hidden email]>
> Content-Type: text/plain; charset=UTF-8
>
> My thoughts in order of importance to me:
>
> 1) 1500 W continuous duty - 100% clean signal.
> 2) 160 - 6 M
> 3) QSK - no relays
> 4) 1 package - no separate power supply
> 5) Lightweight (this is relative of course)
> 6) Remotely controllable
> 7) Internal tuner not required
>
> 73, Bud N7CW
>
> On Fri, Mar 17, 2017 at 10:06 AM, Eric Swartz - WA6HHQ, Elecraft <
> [hidden email]> wrote:
>
>> Interesting discussion.
>>
>> Folks, if we did introduce a 1500 W solid state amp similar to our KPA500
>> in operation, what features etc would be important?
>>
>> 73,
>> Eric
>> /elecraft.com/
>>
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
>>
>
>
> ------------------------------
>
> Message: 8
> Date: Fri, 17 Mar 2017 14:42:15 -0400
> From: Kevin - K4VD <[hidden email]>
> To: Wayne Burdick <[hidden email]>
> Cc: Wes Stewart <[hidden email]>, Elecraft Reflector Reflector
> <[hidden email]>
> Subject: Re: [Elecraft] Linear thoughts
> Message-ID:
> <CAFA9ujvVrLaCtE=[hidden email]>
> Content-Type: text/plain; charset=UTF-8
>
>> On Fri, Mar 17, 2017 at 2:21 PM, Wayne Burdick <[hidden email]> wrote:
>>
>> ?T?
>> he what?
>
>
> ?He said K4. :)
>
> ?
>
>
> ------------------------------
>
> Message: 9
> Date: Fri, 17 Mar 2017 13:42:52 -0500
> From: Chuck Chandler <[hidden email]>
> To: [hidden email]
> Subject: [Elecraft] Linear thoughts
> Message-ID:
> <CAOoYq8__zda_MKYb=[hidden email]>
> Content-Type: text/plain; charset=UTF-8
>
> Hhhhmmm...
>
> 1000W minimum. Excellent performance. Clean signal. Easy interconnection
> with K3 (or K4.) Reasonable weight and form factor (power supply in second
> box would be OK.) Auto-tuner rated for output and reasonable SWR. Antenna
> selection for at least 4 antennas. Not as expensive as the competition
> (or, at least within shouting distance.)
>
> 73 de Chuck, WS1L
>
> --
>
>
> ===================
> Chuck Chandler
> [hidden email]
> ===================
>
>
> ------------------------------
>
> Message: 10
> Date: Fri, 17 Mar 2017 14:46:37 -0400
> From: Guy Olinger K2AV <[hidden email]>
> To: Wayne Burdick <[hidden email]>
> Cc: Wes Stewart <[hidden email]>, Elecraft Reflector
> <[hidden email]>
> Subject: Re: [Elecraft] Linear thoughts
> Message-ID:
> <CANckpc1njB+Stu6wooSEHqtROrXfnUEwwKYUjamnOANmN=[hidden email]>
> Content-Type: text/plain; charset=UTF-8
>
>> On Fri, Mar 17, 2017 at 2:21 PM, Wayne Burdick <[hidden email]> wrote:
>> The what?
>
> K4.
>
> Whatever the K3x finally evolves to, plus a front-end that does
> brainwave interpretation by a combination brainwave detector,
> microphone, headphone, computer display, eye reading device that looks
> like an inverted colander.
>
> No keyboard, no key, no knobs, no buttons, just a monitor display to
> show you what state everything is in.
>
> G.
>
>
> ------------------------------
>
> Message: 11
> Date: Fri, 17 Mar 2017 14:53:51 -0400
> From: "Tom" <[hidden email]>
> To: "Elecraft" <[hidden email]>
> Subject: [Elecraft] New release of Win4K3Suite
> Message-ID: <6F30AD3551B149E98B94FB0A5AB9D68C@DESKTOPAV61F2H>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hello,
> There is a new release of Win4K3Suite. This release offers a bug fix that showed up using DXLab Commander when you switched from a band that did not use the sub-receiver to one that does. There was an excessive delay. In the process, additional performance enhancements were made to the third party virtual radios in Win4K3Suite.
> One of the useful features of Win4K3Suite is that it interfaces to all 3rd party logging and digital mode programs such as HRDLogbook, DX Keeper, NAP3, N3FJP, N1MM+, FLDigi, MIXW as well as hardware devices such as the K3/0, the Pig Knob and various antenna tuners. In order to understand how to do this, there is now a video on youtube that gives clear instructions on using the virtual port management facilities of Win4K3Suite: You can access it at
>
> https://www.youtube.com/watch?v=1jh6IS0S1dE&t=4s
>
> There is no need for LPBridge, and you can wish you can even continue to use NAP3 if you prefer that interface. You can read a review about this here: http://www.eham.net/reviews/detail/11214
> Please check out the 30 day trial at va2fsq.com and the videos on YouTube at
> https://www.youtube.com/results?search_query=win4k3suite
> 73 Tom
>
> ---
> This email has been checked for viruses by Avast antivirus software.
> https://www.avast.com/antivirus
>
>
> ------------------------------
>
> Message: 12
> Date: Fri, 17 Mar 2017 20:00:06 +0100 (CET)
> From: "[hidden email]" <[hidden email]>
> To: <[hidden email]>, <[hidden email]>
> Subject: [Elecraft] R: Re: Linear thoughts
> Message-ID: <[hidden email]>
> Content-Type: text/plain; charset=UTF-8
>
> Great qsk with pin diodes, no noise, fast atu, no switching power supply.If possible not high price.
> Nothing more... ;)Ian IK4EWX........ K3S and.... ex Henry 2KD and now owner of a new ACOM 1000.
>
>
>
>
> ----Messaggio originale----
> Da: [hidden email]
> Data: 17-mar-2017 18.06
> A: <[hidden email]>
> Ogg: Re: [Elecraft] Linear thoughts
>
> Interesting discussion.
>
> Folks, if we did introduce a 1500 W solid state amp similar to our KPA500 in
> operation, what features etc would be important?
>
> 73,
> Eric
> /elecraft.com/
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>
>
>
>
>
> ------------------------------
>
> Message: 13
> Date: Fri, 17 Mar 2017 14:04:10 -0500
> From: buddy s <[hidden email]>
> To: [hidden email]
> Subject: [Elecraft] win4k3+hrd+dm780
> Message-ID:
> <CAHaC9R8uYtA9bN0=[hidden email]>
> Content-Type: text/plain; charset=UTF-8
>
> i have win4k3 on a win10 laptop. using com0com for port sharing. one usb
> port to the k3, another usb port to the signalink. win4k3 is ok with hrd,
> but dm780 is problematic. when i try to send cw, i get the red led on the
> signalink, the red tx led on the k3, but no audio to the k3.
>
> any thoughts?
>
> thanks
>
> 73 de
> W3BS, Buddy Spiegel
> ?
> ??
>
>
> ------------------------------
>
> Message: 14
> Date: Fri, 17 Mar 2017 19:05:23 +0000
> From: Chris Tate - N6WM <[hidden email]>
> To: Wayne Burdick <[hidden email]>, Wes Stewart
> <[hidden email]>
> Cc: "[hidden email]" <[hidden email]>
> Subject: Re: [Elecraft] Linear thoughts
> Message-ID:
> <[hidden email]>
>
> Content-Type: text/plain; charset="us-ascii"
>
> Some bullet points. take the best of what is emerging and improve it..
>
>
> -2 inputs and multiple antenna ports and enough isolation to support SO2R OOB with 1 devices. (flex amp). less devices, shack simplification and value...
>
> -ability to control device over Ethernet via remote without connecting via a serial interface, but keep the serial interface for legacy use (flex amp) the future is on ethernet.
>
> -some kind of ability to manage mismatches, probably a tuner either outboard like a kat500 or inboard would be
> better. one that is more resilient than the expert would be a market differentiator(expert amps but needs improvement) This would make it a killer device.
>
> Thats what comes to mind short term.
>
>
>
>
>
>
>
> ________________________________________
> From: Elecraft [[hidden email]] on behalf of Wayne Burdick [[hidden email]]
> Sent: Friday, March 17, 2017 11:21 AM
> To: Wes Stewart
> Cc: [hidden email]
> Subject: Re: [Elecraft] Linear thoughts
>
>> On Mar 17, 2017, at 11:14 AM, Wes Stewart <[hidden email]> wrote:
>>
>> Three times the power, one-third the cost?
>>
>> Somewhat more seriously: legal limit, internal tuner for up to at least 3:1 SWR (option?), optional separate power supply, quieter cooling. Bigger box to match K4.
>
> The what?
>
>
>>
>> Wes N7WS
>>
>>> On 3/17/2017 10:06 AM, Eric Swartz - WA6HHQ, Elecraft wrote:
>>> Interesting discussion.
>>>
>>> Folks, if we did introduce a 1500 W solid state amp similar to our KPA500 in operation, what features etc would be important?
>>>
>>> 73,
>>> Eric
>>> /elecraft.com/
>
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>
>
> ------------------------------
>
> Message: 15
> Date: Fri, 17 Mar 2017 12:06:04 -0700
> From: Wayne Burdick <[hidden email]>
> To: "[hidden email]" <[hidden email]>
> Cc: "[hidden email]" <[hidden email]>
> Subject: Re: [Elecraft] Preamp 2 and upcoming F/W
> Message-ID: <[hidden email]>
> Content-Type: text/plain; charset=utf-8
>
> Still working on that.
>
> Wayne
>
>> On Mar 17, 2017, at 1:17 AM, [hidden email] wrote:
>>
>>
>>
>>
>>
>> -----Original-Nachricht-----
>> Betreff: AW: [Elecraft] Preamp 2 and upcoming F/W
>> Datum: 2017-03-17T09:10:34+0100
>> Von: "[hidden email]" <[hidden email]>
>> An: "Wayne Burdick" <[hidden email]>
>>
>> Will there be S-meter correction for Pre 2 in ABS mode?
>>
>> 73
>>
>> Volker
>>
>> DL4ZBG
>>
>>
>>
>> -----Original-Nachricht-----
>> Betreff: Re: [Elecraft] Preamp 2 and upcoming F/W
>> Datum: 2017-03-17T02:45:45+0100
>> Von: "Wayne Burdick" <[hidden email]>
>> An: "Dauer, Edward" <[hidden email]>
>>
>> Hi Ted,
>>
>> Preamp 2 is in fact the one on the KXV3B. So any K3 running the new firmware will allow preamp 2 use on 17 and 15 meters. The NF improvement is significant (3 and 6 dB, respectively).
>>
>> The firmware is being field tested now.
>>
>> 73,
>> Wayne
>> N6KR
>>
>>
>>> On Mar 16, 2017, at 6:30 PM, "Dauer, Edward" <[hidden email]> wrote:
>>>
>>> Wayne?s post ? which I accidentally erased ? noted that the LNA ?Preamp 2? will soon be accessible for 15 and 17 meters through a F/W release.
>>>
>>> Just to be sure, does anyone know if that will that include the preamp in the KXV3B?
>>>
>>> I have so far passed up ordering a KXV3B because the Manual says its preamp can be used on 12-10-6, whereas my outboard PR6-10 adds a good deal of gain on 15 as well.
>>>
>>> Ted, KN1CBR
>>>
>>>
>>>
>>>
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
>> ?
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
>
>
>
> ------------------------------
>
> Message: 16
> Date: Fri, 17 Mar 2017 15:10:43 -0400
> From: Mitch Wolfson, DJ?QN / K7DX <[hidden email]>
> To: [hidden email]
> Subject: Re: [Elecraft] Linear thoughts
> Message-ID: <[hidden email]>
> Content-Type: text/plain; charset=windows-1252; format=flowed
>
> Hi Eric,
>
> Thanks for opening up this can of worms ;-)
>
> I haven't been following the discussion until now, but my suggestion
> comes from another angle: make any new amplifier very remotable.
>
> This means the following:
> - Have API's that support complete remote control, also available to
> other software and hardware developers
> - If possible, allow remote power on via a remote command and not by
> providing a voltage to pins (like the old SPE 1K-FA did)
> - Do not use (only) USB control, since this is no good for remoting
> - Have a true serial port for serial port servers and other legacy devices
> - A bonus would be an embedded serial port server, such as the Lantronix
> XPort (OM Power offers this as an option)
> https://www.lantronix.com/products/xport/
> - Another added bonus would be an embedded web server with a control
> interface, such as that offered on the RemoteRig RC-1216H
> http://www.remoterig.com/wp/?page_id=1010
>
> Having helped to install dozens of amplifiers for remoting, I can say
> that this feature set would put a new 1500w amplifier on the top of the
> remote station heap if reasonably priced.
>
> 73,
> Mitch DJ0QN / K7DX
>
> Mitch Wolfson DJ?QN / K7DX
> 10285 Boca Cir, Naples, FL 34109
> Skype: mitchwo
> USA: Home:+1-239-221-9600 - Mobile:+1-424-288-9171
> Germany: Home:+49 89 32152700 - Mobile:+49 172 8374436
>
>> On 17.03.2017 13:06, Eric Swartz - WA6HHQ, Elecraft wrote:
>> Interesting discussion.
>>
>> Folks, if we did introduce a 1500 W solid state amp similar to our
>> KPA500 in operation, what features etc would be important?
>>
>> 73,
>> Eric
>> /elecraft.com/
>>
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
>>
>
>
>
> ------------------------------
>
> Message: 17
> Date: Fri, 17 Mar 2017 19:37:41 +0000 (UTC)
> From: John Saxon <[hidden email]>
> To: Elecraft Reflector <[hidden email]>
> Subject: [Elecraft] OT: RFI problem on 80,40 with AT&T Uverse
> Message-ID: <[hidden email]>
> Content-Type: text/plain; charset=UTF-8
>
> Off topic, but perhaps others have had the same problem.
> I have a K3/100 + ATU (ser#3542), purchased as a kit in 2009. ?No problems with RFI until April of 2016. ?All of a sudden RFI on 80,40(didn't try 160). ?Been off these bands ever since, although all my buddies hang out on 40. ?Have had AT&T out 4 times, no help.
> OK...I just found an AT&T Uverse user forum that discuss this very thing, same symptoms as mine, with a ham participating. ?If I am reading it correctly, they are saying that the bands that Uverse uses for multiplexing includes 160,80 & 40 frequencies. ?One of the contributors said that AT&T eventually upgraded his equipment, including replacing some twisted-pair cables with CAT5 cables, and it solved the problem. ?I am supposed to get a call Monday from an AT&T guy who is familiar with this. ?But I would like input from my Elecraft ham buddies.
> Anyone out there experienced this before? ?I don't think it is just me. ?Anyone out there had this problem with AT&T Uverse and gotten it fixed?
> Reply off-line if you wish, but I believe there may be several on this reflector who would find responses useful to them.
> Thanks!JohnK5ENQ
>
>
> ------------------------------
>
> Message: 18
> Date: Fri, 17 Mar 2017 15:49:26 -0400
> From: Thomas Donohue <[hidden email]>
> To: [hidden email]
> Subject: Re: [Elecraft] (Elecraft) Linear thoughts
> Message-ID: <[hidden email]>
> Content-Type: text/plain; charset=us-ascii
>
> Hi to all:
>
> I had the strong suspicion based on what I heard an Elecraft rep say at last years Dayton Hamvention that a 1500W linear was being worked on; so, I was not surprised by Eric's request. My input is as follows: (1) 1500W+ output, key down; (2) light weight (30 lbs or less); if the 30lbs is not doable in a single unit, then the power supply could be put in a separate box; (3) capability to support two transceivers, much like the current Yaesu Quadra; and (4) full computer control of amp and transceiver(s) I'll leave the detailed suggestions to those much more qualified than I to make. Finally, I will purchase one at Dayton if it is available, sight unseen, based on the Elecraft history of producing high quality products, and most importantly, updating and supporting them throughout their life cycle. Thanks Elecraft for all that you do.
>
> Best 73,
> Tom/W1QU
>
>
> Sent from my iPad
>
> ------------------------------
>
> Message: 19
> Date: Fri, 17 Mar 2017 15:53:28 -0400
> From: Fred Moore <[hidden email]>
> To: [hidden email]
> Subject: Re: [Elecraft] OT: RFI problem on 80,40 with AT&T Uverse
> Message-ID: <[hidden email]>
> Content-Type: text/plain; charset=utf-8
>
> keep everyone filled in on the progress.. Fred
>
> Fred Moore
> email: [hidden email]
> [hidden email]
> Phone: (321) 217-8699
>
>> On 3/17/17 3:37 PM, John Saxon via Elecraft wrote:
>> Off topic, but perhaps others have had the same problem.
>> I have a K3/100 + ATU (ser#3542), purchased as a kit in 2009. No problems with RFI until April of 2016. All of a sudden RFI on 80,40(didn't try 160). Been off these bands ever since, although all my buddies hang out on 40. Have had AT&T out 4 times, no help.
>> OK...I just found an AT&T Uverse user forum that discuss this very thing, same symptoms as mine, with a ham participating. If I am reading it correctly, they are saying that the bands that Uverse uses for multiplexing includes 160,80 & 40 frequencies. One of the contributors said that AT&T eventually upgraded his equipment, including replacing some twisted-pair cables with CAT5 cables, and it solved the problem. I am supposed to get a call Monday from an AT&T guy who is familiar with this. But I would like input from my Elecraft ham buddies.
>> Anyone out there experienced this before? I don't think it is just me. Anyone out there had this problem with AT&T Uverse and gotten it fixed?
>> Reply off-line if you wish, but I believe there may be several on this reflector who would find responses useful to them.
>> Thanks!JohnK5ENQ
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
>
>
>
> ------------------------------
>
> Message: 20
> Date: Fri, 17 Mar 2017 15:54:26 -0400
> From: "Bert Garcia N8NN" <[hidden email]>
> To: "'Eric Swartz - WA6HHQ, Elecraft'" <[hidden email]>,
> <[hidden email]>
> Subject: Re: [Elecraft] Linear thoughts
> Message-ID: <000601d29f58$484add50$d8e097f0$@earthlink.net>
> Content-Type: text/plain; charset="us-ascii"
>
> My wish list for a 1500 watt Elecraft linear:
>
> Separate power supply so I can lift it one piece at a time.
> Light weight power supply.
> Wide-range automatic antenna tuner with memory.
> Quite fans, low noise.
> Solid-state QSK.
> 160 - 6 meters.
> Auto band change by RF sensing.
> Auto band change from the transceiver.
> Power limited on 30/60 meters.
> 11 meters blocked.
> Multiple antenna jacks with auto selection.
> Built-in SWR and watt meters.
> Antenna selection and SWR/watt meters work when amp is off.
> Two radio inputs.
> Elecraft styling.
> Remote control capability via LAN.
> 1500 watts no time limit.
> Auto AC voltage selection on power supply.
>
> Bert N8NN
>
>
> -----Original Message-----
> From: Elecraft [mailto:[hidden email]] On Behalf Of Eric
> Swartz - WA6HHQ, Elecraft
> Sent: Friday, March 17, 2017 1:07 PM
> To: [hidden email]
> Subject: Re: [Elecraft] Linear thoughts
>
> Interesting discussion.
>
> Folks, if we did introduce a 1500 W solid state amp similar to our KPA500 in
> operation, what features etc would be important?
>
> 73,
> Eric
> /elecraft.com/
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html Message
> delivered to [hidden email]
>
>
>
> ------------------------------
>
> Message: 21
> Date: Fri, 17 Mar 2017 20:07:49 +0000
> From: brian <[hidden email]>
> To: [hidden email]
> Subject: Re: [Elecraft] Linear thoughts
> Message-ID: <[hidden email]>
> Content-Type: text/plain; charset=windows-1252; format=flowed
>
> You forgot antenna tune should follow K3 frequency like KAT500 can so
> that it can pre-tune.
> 73 de Brian/K3KO
>
>> On 3/17/2017 19:54 PM, Bert Garcia N8NN wrote:
>> My wish list for a 1500 watt Elecraft linear:
>>
>> Separate power supply so I can lift it one piece at a time.
>> Light weight power supply.
>> Wide-range automatic antenna tuner with memory.
>> Quite fans, low noise.
>> Solid-state QSK.
>> 160 - 6 meters.
>> Auto band change by RF sensing.
>> Auto band change from the transceiver.
>> Power limited on 30/60 meters.
>> 11 meters blocked.
>> Multiple antenna jacks with auto selection.
>> Built-in SWR and watt meters.
>> Antenna selection and SWR/watt meters work when amp is off.
>> Two radio inputs.
>> Elecraft styling.
>> Remote control capability via LAN.
>> 1500 watts no time limit.
>> Auto AC voltage selection on power supply.
>>
>> Bert N8NN
>>
>>
>> -----Original Message-----
>> From: Elecraft [mailto:[hidden email]] On Behalf Of Eric
>> Swartz - WA6HHQ, Elecraft
>> Sent: Friday, March 17, 2017 1:07 PM
>> To: [hidden email]
>> Subject: Re: [Elecraft] Linear thoughts
>>
>> Interesting discussion.
>>
>> Folks, if we did introduce a 1500 W solid state amp similar to our KPA500 in
>> operation, what features etc would be important?
>>
>> 73,
>> Eric
>> /elecraft.com/
>>
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html Message
>> delivered to [hidden email]
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
>>
>
>
> ------------------------------
>
> Message: 22
> Date: Fri, 17 Mar 2017 20:11:28 +0000
> From: brian <[hidden email]>
> To: [hidden email]
> Subject: Re: [Elecraft] OT: RFI problem on 80,40 with AT&T Uverse
> Message-ID: <[hidden email]>
> Content-Type: text/plain; charset=windows-1252; format=flowed
>
> These Uverse RFI problems that others reported made me choose COMCAST
> when I moved. I guess you are pretty much locked in.
>
> I hate COMCAST but trying to solve these problems was considered more of
> a hassle with the possibility of no solution.
>
> The other issue is some reported that the Uverse modems generated
> significant RFI on receive.
>
> 73 de Brian/K3KO
>
>
>
>> On 3/17/2017 19:53 PM, Fred Moore wrote:
>> keep everyone filled in on the progress.. Fred
>>
>> Fred Moore
>> email: [hidden email]
>> [hidden email]
>> Phone: (321) 217-8699
>>
>>> On 3/17/17 3:37 PM, John Saxon via Elecraft wrote:
>>> Off topic, but perhaps others have had the same problem.
>>> I have a K3/100 + ATU (ser#3542), purchased as a kit in 2009. No problems with RFI until April of 2016. All of a sudden RFI on 80,40(didn't try 160). Been off these bands ever since, although all my buddies hang out on 40. Have had AT&T out 4 times, no help.
>>> OK...I just found an AT&T Uverse user forum that discuss this very thing, same symptoms as mine, with a ham participating. If I am reading it correctly, they are saying that the bands that Uverse uses for multiplexing includes 160,80 & 40 frequencies. One of the contributors said that AT&T eventually upgraded his equipment, including replacing some twisted-pair cables with CAT5 cables, and it solved the problem. I am supposed to get a call Monday from an AT&T guy who is familiar with this. But I would like input from my Elecraft ham buddies.
>>> Anyone out there experienced this before? I don't think it is just me. Anyone out there had this problem with AT&T Uverse and gotten it fixed?
>>> Reply off-line if you wish, but I believe there may be several on this reflector who would find responses useful to them.
>>> Thanks!JohnK5ENQ
>>> ______________________________________________________________
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:[hidden email]
>>>
>>> This list hosted by: http://www.qsl.net
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>>> Message delivered to [hidden email]
>>
>> ______________________________________________________________
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>>
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>
>
> ------------------------------
>
> Message: 23
> Date: Fri, 17 Mar 2017 16:18:04 -0400
> From: John Fritze <[hidden email]>
> To: "[hidden email]" <[hidden email]>
> Subject: Re: [Elecraft] Linear thoughts
> Message-ID:
> <[hidden email]>
> Content-Type: text/plain; charset=UTF-8
>
> Dear Eric,
>
> IF Elecraft was to introduce a 1500W amp, I would love it to interface as
> well as the KPA500 does now. If I could have anything additional, my first
> choice would be to have a tuner inside the box, that can either be used or
> bypassed as necessary.
>
> The ability to be run on either 110V or 220V US, ( and European voltages
> ). Ideally a multi-tap transformer that would allow locations with voltage
> sag to still operate the amp. For example on my boat I have a multitap
> isolation transformer that allows voltages to be adjusted to 110V from 90V
> and up to 250V simply by changing taps.
>
> --
> John Fritze Jr
> K2QY
> [hidden email]
> ACACES president 2014
> ARES ENY DEC Northern District
> Hudson Div. Asst. Director
> Twitter: @k2qy
> 401 261 4996 (cell)
>
>
> ------------------------------
>
> Message: 24
> Date: Fri, 17 Mar 2017 13:21:28 -0700
> From: Wes Stewart <[hidden email]>
> To: [hidden email]
> Subject: Re: [Elecraft] Linear thoughts
> Message-ID: <[hidden email]>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> The imaginary transceiver to match the imaginary amplifier.
>
>> On 3/17/2017 11:21 AM, Wayne Burdick wrote:
>>> On Mar 17, 2017, at 11:14 AM, Wes Stewart <[hidden email]> wrote:
>>>
>>> Three times the power, one-third the cost?
>>>
>>> Somewhat more seriously: legal limit, internal tuner for up to at least 3:1 SWR (option?), optional separate power supply, quieter cooling. Bigger box to match K4.
>> The what?
>>
>
>
>
> ------------------------------
>
> Message: 25
> Date: Fri, 17 Mar 2017 16:26:33 -0400
> From: [hidden email]
> To: [hidden email], [hidden email]
> Subject: Re: [Elecraft] Linear thoughts
> Message-ID: <[hidden email]>
> Content-Type: text/plain; charset="US-ASCII"
>
>
> As long as we're hoping how about a swappable input board to allow it to
> be driven to full output by a KX3 as soon as the rule changes. Ditto for the
> KPA500......that's when I'll buy mine.
>
> Or at least allow an experimenter to easily modify his own without voiding
> a warranty if the rule doesn't change............
>
> Scott ka9p
>
>
>
> In a message dated 3/17/2017 3:01:02 P.M. Central Daylight Time,
> [hidden email] writes:
>
> My wish list for a 1500 watt Elecraft linear:
>
> Separate power supply so I can lift it one piece at a time.
> Light weight power supply.
> Wide-range automatic antenna tuner with memory.
> Quite fans, low noise.
> Solid-state QSK.
> 160 - 6 meters.
> Auto band change by RF sensing.
> Auto band change from the transceiver.
> Power limited on 30/60 meters.
> 11 meters blocked.
> Multiple antenna jacks with auto selection.
> Built-in SWR and watt meters.
> Antenna selection and SWR/watt meters work when amp is off.
> Two radio inputs.
> Elecraft styling.
> Remote control capability via LAN.
> 1500 watts no time limit.
> Auto AC voltage selection on power supply.
>
> Bert N8NN
>
>
> -----Original Message-----
> From: Elecraft [mailto:[hidden email]] On Behalf Of Eric
> Swartz - WA6HHQ, Elecraft
> Sent: Friday, March 17, 2017 1:07 PM
> To: [hidden email]
> Subject: Re: [Elecraft] Linear thoughts
>
> Interesting discussion.
>
> Folks, if we did introduce a 1500 W solid state amp similar to our KPA500
> in
> operation, what features etc would be important?
>
> 73,
> Eric
> /elecraft.com/
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html Message
> delivered to [hidden email]
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>
>
>
> ------------------------------
>
> Message: 26
> Date: Fri, 17 Mar 2017 13:38:38 -0700
> From: "Mike Flowers" <[hidden email]>
> To: "'brian'" <[hidden email]>, <[hidden email]>
> Subject: Re: [Elecraft] OT: RFI problem on 80,40 with AT&T Uverse
> Message-ID: <03a501d29f5e$757d3dd0$6077b970$@gmail.com>
> Content-Type: text/plain; charset="us-ascii"
>
> I had similar RFI issues with AT&T Uverse equipment, both on RX and TX.
>
> I went with Comcast and have no RFI issues with them. Nearly our entire
> neighborhood is Comcast. AT&T tried to deliver Uverse here via 50-year old
> twisted pairs and it was a mess.
>
> - 73 and good DX de Mike, K6MKF, IDXC 2017 Committee
>
>> -----Original Message-----
>> From: Elecraft [mailto:[hidden email]] On Behalf Of
> brian
>> Sent: Friday, March 17, 2017 1:11 PM
>> To: [hidden email]
>> Subject: Re: [Elecraft] OT: RFI problem on 80,40 with AT&T Uverse
>>
>> These Uverse RFI problems that others reported made me choose COMCAST
>> when I moved. I guess you are pretty much locked in.
>>
>> I hate COMCAST but trying to solve these problems was considered more of a
>> hassle with the possibility of no solution.
>>
>> The other issue is some reported that the Uverse modems generated
> significant
>> RFI on receive.
>>
>> 73 de Brian/K3KO
>>
>>
>>
>>> On 3/17/2017 19:53 PM, Fred Moore wrote:
>>> keep everyone filled in on the progress.. Fred
>>>
>>> Fred Moore
>>> email: [hidden email]
>>> [hidden email]
>>> Phone: (321) 217-8699
>>>
>>>> On 3/17/17 3:37 PM, John Saxon via Elecraft wrote:
>>>> Off topic, but perhaps others have had the same problem.
>>>> I have a K3/100 + ATU (ser#3542), purchased as a kit in 2009. No
> problems
>> with RFI until April of 2016. All of a sudden RFI on 80,40(didn't try
> 160). Been
>> off these bands ever since, although all my buddies hang out on 40. Have
> had
>> AT&T out 4 times, no help.
>>>> OK...I just found an AT&T Uverse user forum that discuss this very
> thing,
>> same symptoms as mine, with a ham participating. If I am reading it
> correctly,
>> they are saying that the bands that Uverse uses for multiplexing includes
> 160,80
>> & 40 frequencies. One of the contributors said that AT&T eventually
> upgraded
>> his equipment, including replacing some twisted-pair cables with CAT5
> cables,
>> and it solved the problem. I am supposed to get a call Monday from an
> AT&T
>> guy who is familiar with this. But I would like input from my Elecraft
> ham
>> buddies.
>>>> Anyone out there experienced this before? I don't think it is just me.
> Anyone
>> out there had this problem with AT&T Uverse and gotten it fixed?
>>>> Reply off-line if you wish, but I believe there may be several on this
> reflector
>> who would find responses useful to them.
>>>> Thanks!JohnK5ENQ
>>>>
>> _____________________________________________________________
>> _
>>>> Elecraft mailing list
>>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>>> Help: http://mailman.qth.net/mmfaq.htm
>>>> Post: mailto:[hidden email]
>>>>
>>>> This list hosted by: http://www.qsl.net Please help support this
>>>> email list: http://www.qsl.net/donate.html Message delivered to
>>>> [hidden email]
>>>
>>>
>> _____________________________________________________________
>> _
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:[hidden email]
>>>
>>> This list hosted by: http://www.qsl.net Please help support this email
>>> list: http://www.qsl.net/donate.html Message delivered to
>>> [hidden email]
>>>
>> _____________________________________________________________
>> _
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
> Message
>> delivered to [hidden email]
>
>
>
> ------------------------------
>
> Message: 27
> Date: Fri, 17 Mar 2017 15:51:51 -0500
> From: Clay Autery <[hidden email]>
> To: [hidden email]
> Subject: Re: [Elecraft] Linear thoughts
> Message-ID: <[hidden email]>
> Content-Type: text/plain; charset=windows-1252
>
> I'm firmly in the component or modular engineering camp. All things
> equal, less integration of function trumps integration if its a choice.
>
> The other guys have already hit on most of the big items... Here's what
> is important to me.
>
> 1500+W (Prefer something built to 2-3K Watts capable and then throttled
> back... no running on the bleeding edge.
> Clean.... Like really clean...
> Separate power supply.... OR AT MINIMUM, the option to choose to use an
> external power supply so I can choose either the one Elecraft supplies
> or provide my own.... heavy linear at home and the option for a lighter
> travel supply.
> (Ideally, a separate Elecraft PS that obeys the packaging rules...
> Try to integrate the packaging to fit the K3s, et al footprint...
> Height being the adjustable dimension to meet volume requirements.
> Thermal design from the ground up not as an afterthought (patchwork and
> band-aids not welcome).
>
> Seriously consider designing in an easily made mod that will allow other
> drive profiles for when the current limit is eliminated.
>
> Don't want an internal tuner.... want a KAT1500 like external tuner...
>
> Long, long list of considered opinions on almost any conceivable
> spec/feature and a logical argument for/against inclusion in the design....
> Simply ask the questions...
>
> 73,
>
> ______________________
> Clay Autery, KY5G
> MONTAC Enterprises
> (318) 518-1389
>
>> On 3/17/2017 12:06 PM, Eric Swartz - WA6HHQ, Elecraft wrote:
>> Interesting discussion.
>>
>> Folks, if we did introduce a 1500 W solid state amp similar to our
>> KPA500 in operation, what features etc would be important?
>>
>> 73,
>> Eric
>> /elecraft.com/
>>
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
>
>
>
> ------------------------------
>
> Subject: Digest Footer
>
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> http://mailman.qth.net/mailman/listinfo/elecraft
> You must be a subscriber to post.
> Elecraft web page: http://www.elecraft.com
>
> ------------------------------
>
> End of Elecraft Digest, Vol 155, Issue 25
> *****************************************

N2TK

Re: Linear thoughts

In reply to this post by Eric Swartz - WA6HHQ

Most everything desired has already been mentioned. Use SPE amps as a
baseline for features and learning curve.
- QSK Preferably PIN diodes
- Remote capability like the KPA500 but with more monitoring capability so I
can put the amp in the basement alongside the KPA500.
- SO2R capability built in
- 2 rig inputs
- 4-6 antenna outputs programmable and easily switchable
- Low distortion LDMOS - single ended or two for push-pull. Max of two
MOSFETS.
- Switching supply naturally
- Optional built-in tuner that can handle at least 3:1. Amp without tuner
can handle at least 2:1 SWR without fold back on power.
- 1500W key down for digital on 160-6M
- Separate or combined amp/PS depends on size and weight.
- Amp/tuner tracks K3 receive for pre-tuning.
- some form of pre-distortion control to keep the amp clean at full output.

73,
N2TK, Tony

-----Original Message-----
From: Elecraft [mailto:[hidden email]] On Behalf Of Eric
Swartz - WA6HHQ, Elecraft
Sent: Friday, March 17, 2017 1:07 PM
To: [hidden email]
Subject: Re: [Elecraft] Linear thoughts

Interesting discussion.

Folks, if we did introduce a 1500 W solid state amp similar to our KPA500 in
operation, what features etc would be important?

73,
Eric
/elecraft.com/

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K9MA

Re: Linear thoughts

The capability of switching ATU settings for different antennas, on the
same band, with or without also switching output jacks. Control via
simple logic signals, not only via serial commands and software.
Alternately, provide a stand-alone accessory box which could respond to
logic signals and send serial commands to the amplifier.

--
Scott K9MA

[hidden email]

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kstover

Re: Linear thoughts

In reply to this post by Wes Stewart-2

I hate to interrupt the group fantasy but,

No way a "1500W key down forever any mode" solid state amp is going to
be quiet, affordable, or fit in the KPA500 box, much less the K3s (that
was funny). Add an internal tuner capable of "1500W key down forever any
mode" and the box gets bigger, the fans get louder, and the price goes
up. If you're planning on running this on 120V...just stop.

A power supply capable of "1500W key down forever any mode", 50V stiff @
80 amps, isn't going to be light, quiet, and not be a switcher (that was
funny too).

Remember, the prime directive is 160-6m "1500 W key down forever any
mode". There isn't an SSPA for sale in the amateur market that can do
that. So...you're paying $8K right now to get "close" (close is
relative). If Elecraft can do it for 20% more good on 'em. Then you get
to decide good down payment on a new car, or KPA1500.

R. Kevin Stover

AC0H
ARRL
FISTS #11993
SKCC #215
NAQCC #3441

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kstover

Re: Linear thoughts

I forgot that the KPA500 and K3s are the same size. Point remains
KPA1500AT won't fit in the KPA500/K3s box.

On 3/18/2017 9:57 AM, Kevin wrote:

> I hate to interrupt the group fantasy but,
>
> No way a "1500W key down forever any mode" solid state amp is going to
> be quiet, affordable, or fit in the KPA500 box, much less the K3s
> (that was funny). Add an internal tuner capable of "1500W key down
> forever any mode" and the box gets bigger, the fans get louder, and
> the price goes up. If you're planning on running this on 120V...just
> stop.
>
> A power supply capable of "1500W key down forever any mode", 50V stiff
> @ 80 amps, isn't going to be light, quiet, and not be a switcher (that
> was funny too).
>
> Remember, the prime directive is 160-6m "1500 W key down forever any
> mode". There isn't an SSPA for sale in the amateur market that can do
> that. So...you're paying $8K right now to get "close" (close is
> relative). If Elecraft can do it for 20% more good on 'em. Then you
> get to decide good down payment on a new car, or KPA1500.
>
>
> R. Kevin Stover
>
> AC0H
> ARRL
> FISTS #11993
> SKCC #215
> NAQCC #3441
>
>
> ---
> This email has been checked for viruses by Avast antivirus software.
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>
> ______________________________________________________________
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--
R. Kevin Stover
AC0H
ARRL
FISTS #11993
SKCC #215
NAQCC #3441

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briancom

Re: Linear thoughts

In reply to this post by K9MA

This is relevant. The original ACOM2000 and ACOM antenna switch had to
be used over a "network" for integration with the 2000. The "network"
was an unusual one that many people tried to write software to access
without success. There were all kinds of issues. It ended up being
unusable.

KISS would be better. Either ASCII commands, analog voltage inputs or both.

Maybe this ACOM2000 situation has changed now.

73 de Brian/K3KO

On 3/18/2017 14:54 PM, K9MA wrote:
> The capability of switching ATU settings for different antennas, on the
> same band, with or without also switching output jacks. Control via
> simple logic signals, not only via serial commands and software.
> Alternately, provide a stand-alone accessory box which could respond to
> logic signals and send serial commands to the amplifier.
>
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Dan Baker

Re: Linear thoughts

In reply to this post by john@kk9a.com

It would be very nice to have the ability to make a unauthorized,
unofficial simple mod. Maybe call it the KX3 mod. This mod would allow one
to drive the amp to full output with a KX2 or KX3.

Dan KM6CQ
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George Danner-2

Re: Linear thoughts

I agree Dan,
Make a modification kit available to licensed operators and blessed by
Elecraft.
Kit of parts w/pc board would be ok by me.
Maybe one with 2 inputs - one for K3 (100 watt rigs) and another for KX2 or
KX3 (QRP) rigs.
Seems wasteful to feed the KPA500 with a KX3 + KPX100 to the input
attenuator in the KPA500; unless the attenuator is needed for performance
specs.
73
George
AI4VZ

-----Original Message-----
From: Dan Baker

It would be very nice to have the ability to make a unauthorized, unofficial
simple mod. Maybe call it the KX3 mod.
This mod would allow one to drive the amp to full output with a KX2 or KX3.

Dan KM6CQ

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kstover

Re: Linear thoughts

Has the rule limiting gain to 15dB been changed or rescinded by the FCC yet?
Do you expect Elecraft to provide such a "mod" before the rule has
changed? Snicker....and cover it under warranty?

On 3/18/2017 12:01 PM, Gmail - George wrote:

> I agree Dan,
> Make a modification kit available to licensed operators and blessed by
> Elecraft.
> Kit of parts w/pc board would be ok by me.
> Maybe one with 2 inputs - one for K3 (100 watt rigs) and another for KX2 or
> KX3 (QRP) rigs.
> Seems wasteful to feed the KPA500 with a KX3 + KPX100 to the input
> attenuator in the KPA500; unless the attenuator is needed for performance
> specs.
> 73
> George
> AI4VZ
>
> -----Original Message-----
> From: Dan Baker
>
> It would be very nice to have the ability to make a unauthorized, unofficial
> simple mod. Maybe call it the KX3 mod.
> This mod would allow one to drive the amp to full output with a KX2 or KX3.
>
> Dan KM6CQ
>
> ______________________________________________________________
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>
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> Message delivered to [hidden email]
>

Ed Muns

Re: Linear thoughts

In reply to this post by Eric Swartz - WA6HHQ

Based on the excellent KPA500 design, augmented by user experience, and the
added comments to Eric's question below, I'm confident Elecraft can define
another great product if they so choose.

My request is that the button colors be more functional than they are on the
KPA500. "Black on Black" is aesthetically very cool in a well-lit
environment, but functionally very poor in most actual operational
environments. Some of us have replaced the KPA500 button caps with gray and
other colors like on the K3, so we can find the buttons more readily.

Ed W0YK
________________________________________________________________________

Eric WA6HHQ wrote:

Interesting discussion.

Folks, if we did introduce a 1500 W solid state amp similar to our KPA500 in

operation, what features etc would be important?

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k6mrmagnet

Re: Linear thoughts

In reply to this post by Dan Baker

Check out the web page of NX1P. Reasonably simple mods to add a few dB of gain to the KPA500 and allows full power with KX3 drive. I modified both my KPAs because I do run them in parallel and needed a bit more gain on the higher bands.

Ken K6MR

From: Dan Baker<mailto:[hidden email]>
Sent: Saturday, March 18, 2017 9:32 AM
To: [hidden email]<mailto:[hidden email]>
Subject: Re: [Elecraft] Linear thoughts

It would be very nice to have the ability to make a unauthorized,
unofficial simple mod. Maybe call it the KX3 mod. This mod would allow one
to drive the amp to full output with a KX2 or KX3.

Dan KM6CQ
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Doug Person-4

Re: Linear thoughts

In reply to this post by Eric Swartz - WA6HHQ

In every way exactly like the KPA500 but 1500 out - full key-down.

Doug -- K0DXV

On 3/17/2017 11:06 AM, Eric Swartz - WA6HHQ, Elecraft wrote:

Bill-3

Re: Linear thoughts

The only controls I ever touch on the KPA500 are the ON and the oper/stby.

--
Many of life's problems can be solved by simply deciding what
we can do without. - John Dolan

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