KX2 and Sherwood Eng. RX Performance Ranking?

classic Classic list List threaded Threaded
24 messages Options
12
Reply | Threaded
Open this post in threaded view
|

KX2 and Sherwood Eng. RX Performance Ranking?

Phil Hystad-3
I looked and I couldn’t find it.  The KX2 being covered by the Sherwood Engineering Performance Rank table.  Does anyone know if this is purposely skipped over for some reason, not covered yet, or is it there and I can’t find it sort of thing?

Thanks for any comments.

73, phil, K7PEH

______________________________________________________________
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]
Reply | Threaded
Open this post in threaded view
|

Re: KX2 and Sherwood Eng. RX Performance Ranking?

Mike Rhodes-2
Can't say for sure but doubt it has been reviewed yet. It is still
pretty new.

Mike / W8DN

On 3/8/2017 12:58 PM, Phil Hystad wrote:

> I looked and I couldn’t find it.  The KX2 being covered by the Sherwood Engineering Performance Rank table.  Does anyone know if this is purposely skipped over for some reason, not covered yet, or is it there and I can’t find it sort of thing?
>
> Thanks for any comments.
>
> 73, phil, K7PEH
>
> ______________________________________________________________
> 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]
Reply | Threaded
Open this post in threaded view
|

Re: KX2 and Sherwood Eng. RX Performance Ranking?

Matt Murphy
I would guess that it will perform nearly identically to a high serial
number KX3, but it would be great to see some actual test results.

73, Matt NQ6N

On Wed, Mar 8, 2017 at 2:03 PM, Mike Rhodes <[hidden email]> wrote:

> Can't say for sure but doubt it has been reviewed yet. It is still pretty
> new.
>
> Mike / W8DN
>
> On 3/8/2017 12:58 PM, Phil Hystad wrote:
>
>> I looked and I couldn’t find it.  The KX2 being covered by the Sherwood
>> Engineering Performance Rank table.  Does anyone know if this is purposely
>> skipped over for some reason, not covered yet, or is it there and I can’t
>> find it sort of thing?
>>
>> Thanks for any comments.
>>
>> 73, phil, K7PEH
>>
>> ______________________________________________________________
>> 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]
Reply | Threaded
Open this post in threaded view
|

Re: KX2 and Sherwood Eng. RX Performance Ranking?

Mike Morrow-3
In reply to this post by Phil Hystad-3

> Can't say for sure but doubt it has been reviewed yet. It is still
> pretty new.

It's been on the market for ten months...long enough for a popular rig to be reviewed.

There's been nothing in QST's product reviews either.

But then, Elecraft has not released much technical information either...still no schematics for the typical customer.

Mike / KK5F
______________________________________________________________
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]
Reply | Threaded
Open this post in threaded view
|

Re: KX2 and Sherwood Eng. RX Performance Ranking?

Rick WA6NHC-2
Remember that Rob is usually LOANed a radio (by an individual or
manufacturer) for an extended period of time.  In a very few cases, he
buys/owns the radio.

I know of few that would loan out their brand new radio for a month or
more instead of actually using it.

So if someone wants to loan Rob their KX2, I'm sure he's happy to test
it, try it out etc.  It's not just a simple bench test, he uses it and
makes comments based on science as well as being a DXer/contester user
of the radio.  Testing alone doesn't determine control placement or ease
for example.

Rick wa6nhc


On 3/8/2017 12:27 PM, Mike Morrow wrote:
>> Can't say for sure but doubt it has been reviewed yet. It is still
>> pretty new.
> It's been on the market for ten months...long enough for a popular rig to be reviewed.
>
> There's been nothing in QST's product reviews either.
>
> But then, Elecraft has not released much technical information either...still no schematics for the typical customer.
>
> Mike / KK5F

______________________________________________________________
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]
Reply | Threaded
Open this post in threaded view
|

Re: KX2 and Sherwood Eng. RX Performance Ranking?

wayne burdick
Administrator
Too bad Rob's table doesn't have columns for size, weight, or current drain. I think the KX2 might have the lowest numbers in all three categories.

73,
Wayne
N6KR



On Mar 8, 2017, at 12:40 PM, Rick WA6NHC <[hidden email]> wrote:

> Remember that Rob is usually LOANed a radio (by an individual or manufacturer) for an extended period of time.  In a very few cases, he buys/owns the radio.
>
> I know of few that would loan out their brand new radio for a month or more instead of actually using it.
>
> So if someone wants to loan Rob their KX2, I'm sure he's happy to test it, try it out etc.  It's not just a simple bench test, he uses it and makes comments based on science as well as being a DXer/contester user of the radio.  Testing alone doesn't determine control placement or ease for example.
>
> Rick wa6nhc
>
>
> On 3/8/2017 12:27 PM, Mike Morrow wrote:
>>> Can't say for sure but doubt it has been reviewed yet. It is still
>>> pretty new.
>> It's been on the market for ten months...long enough for a popular rig to be reviewed.
>>
>> There's been nothing in QST's product reviews either.
>>
>> But then, Elecraft has not released much technical information either...still no schematics for the typical customer.
>>
>> Mike / KK5F
>
> ______________________________________________________________
> 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]
Reply | Threaded
Open this post in threaded view
|

Re: KX2 and Sherwood Eng. RX Performance Ranking?

Rick WA6NHC-2
You're correct.  But in fairness, those items should be based on a
standard output power (not everyone wants QRP) and we already know that
you're the only company concerned about those points and you're the
clear winner.  ;-)

As I had said, it's more than numbers.  There are many other factors
involved in the 'test'.  Sheer numbers only tell the science side of the
operation; useless if you have to go through layers of menu to make a
frequent adjustment.

To me, knowing how clean a transmitter is should be on the list as well,
what crud does it produce at a given output, in all modes. While some
don't care they spread all over the band, I'd rather put the energy into
a CLEAN signal to concentrate that one extra erg to make the contact.  
It's also about being a good neighbor; do unto others...  ;-)

Rick nhc


On 3/8/2017 12:45 PM, Wayne Burdick wrote:

> Too bad Rob's table doesn't have columns for size, weight, or current drain. I think the KX2 might have the lowest numbers in all three categories.
>
> 73,
> Wayne
> N6KR
>
>
>
> On Mar 8, 2017, at 12:40 PM, Rick WA6NHC <[hidden email]> wrote:
>
>> Remember that Rob is usually LOANed a radio (by an individual or manufacturer) for an extended period of time.  In a very few cases, he buys/owns the radio.
>>
>> I know of few that would loan out their brand new radio for a month or more instead of actually using it.
>>
>> So if someone wants to loan Rob their KX2, I'm sure he's happy to test it, try it out etc.  It's not just a simple bench test, he uses it and makes comments based on science as well as being a DXer/contester user of the radio.  Testing alone doesn't determine control placement or ease for example.
>>
>> Rick wa6nhc
>>
>>
>> On 3/8/2017 12:27 PM, Mike Morrow wrote:
>>>> Can't say for sure but doubt it has been reviewed yet. It is still
>>>> pretty new.
>>> It's been on the market for ten months...long enough for a popular rig to be reviewed.
>>>
>>> There's been nothing in QST's product reviews either.
>>>
>>> But then, Elecraft has not released much technical information either...still no schematics for the typical customer.
>>>
>>> Mike / KK5F
>> ______________________________________________________________
>> 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]
Reply | Threaded
Open this post in threaded view
|

Re: KX2 and Sherwood Eng. RX Performance Ranking?

Phil Hystad-3
> You're correct.  But in fairness, those items should be based on a standard output power (not everyone wants QRP) and we already know that you're the only company concerned about those points and you're the clear winner.  ;-)
>

Actually, I think many if not most ham operators want the opposite.  The biggest and heaviest rig.  Look at what Icom did with their 7800, look at that Yaesu Beast of a radio, what is it, the FT-DX9000 or is that 90000.  Putting a brick on the back of a KX2 might be good for a sales gimmick  “Buy me, I’m heavy".

By the way, my KX2 is on order — still waiting for Elecraft to say “its shipped”.

73, phil, K7PEH



> As I had said, it's more than numbers.  There are many other factors involved in the 'test'.  Sheer numbers only tell the science side of the operation; useless if you have to go through layers of menu to make a frequent adjustment.
>
> To me, knowing how clean a transmitter is should be on the list as well, what crud does it produce at a given output, in all modes. While some don't care they spread all over the band, I'd rather put the energy into a CLEAN signal to concentrate that one extra erg to make the contact.  It's also about being a good neighbor; do unto others...  ;-)
>
> Rick nhc
>
>
> On 3/8/2017 12:45 PM, Wayne Burdick wrote:
>> Too bad Rob's table doesn't have columns for size, weight, or current drain. I think the KX2 might have the lowest numbers in all three categories.
>>
>> 73,
>> Wayne
>> N6KR
>>
>>
>>
>> On Mar 8, 2017, at 12:40 PM, Rick WA6NHC <[hidden email]> wrote:
>>
>>> Remember that Rob is usually LOANed a radio (by an individual or manufacturer) for an extended period of time.  In a very few cases, he buys/owns the radio.
>>>
>>> I know of few that would loan out their brand new radio for a month or more instead of actually using it.
>>>
>>> So if someone wants to loan Rob their KX2, I'm sure he's happy to test it, try it out etc.  It's not just a simple bench test, he uses it and makes comments based on science as well as being a DXer/contester user of the radio.  Testing alone doesn't determine control placement or ease for example.
>>>
>>> Rick wa6nhc
>>>
>>>
>>> On 3/8/2017 12:27 PM, Mike Morrow wrote:
>>>>> Can't say for sure but doubt it has been reviewed yet. It is still
>>>>> pretty new.
>>>> It's been on the market for ten months...long enough for a popular rig to be reviewed.
>>>>
>>>> There's been nothing in QST's product reviews either.
>>>>
>>>> But then, Elecraft has not released much technical information either...still no schematics for the typical customer.
>>>>
>>>> Mike / KK5F
>>> ______________________________________________________________
>>> 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]
Reply | Threaded
Open this post in threaded view
|

Re: KX2 and Sherwood Eng. RX Performance Ranking?

Ignacy
In reply to this post by Rick WA6NHC-2
I think the Sherwood ranking to KX2 means nothing unless you have a KW amp (e.g., Expert 1.3k after mods) and run it in a contest or DXpeditions. After all, nobody will hear you. Also nobody will hear your IMD3 except your next door neighbor.

The biggest values of a QRP radio are:
1) convenience including good antenna tuner
2) well compressed signal on SSB if on phone

If KX2 is like KX3, big yes to 1) and not much to 2). But you can always buy TT-715 and increase the punch of KX2 in SSB by 2-4 times.

Ignacy, NO9E


Reply | Threaded
Open this post in threaded view
|

Re: KX2 and Sherwood Eng. RX Performance Ranking?

Phil Hystad-3
I have ONLY operated QRP and 10 watts with my KX3 and that is all I plan to do with my KX2.
Operating QRP with a compromise antenna is a challenge and it is fun.  I am surprised that more
people do not love this.

Of course CW only!

73, phil, K7PEH

> I think the Sherwood ranking to KX2 means nothing unless you have a KW amp
> (e.g., Expert 1.3k after mods) and run it in a contest or DXpeditions. After
> all, nobody will hear you. Also nobody will hear your IMD3 except your next
> door neighbor.
>
> The biggest values of a QRP radio are:
> 1) convenience including good antenna tuner
> 2) well compressed signal on SSB if on phone
>
> If KX2 is like KX3, big yes to 1) and not much to 2). But you can always buy
> TT-715 and increase the punch of KX2 in SSB by 2-4 times.
>
> Ignacy, NO9E
>
>
>
>
>
>
> --
> View this message in context: http://elecraft.365791.n2.nabble.com/KX2-and-Sherwood-Eng-RX-Performance-Ranking-tp7627760p7627775.html
> Sent from the Elecraft mailing list archive at Nabble.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]
Reply | Threaded
Open this post in threaded view
|

Re: KX2 and Sherwood Eng. RX Performance Ranking?

Elecraft mailing list
In reply to this post by Mike Morrow-3
The KX2 was pretty thoroughly reviewed by Peter Hart in the January 2017 edition of RadCom.

Without trying to reproduce the receiver data tables, some representative numbers are:

3.5 MHz close in IMD (500 Hz bandwidth, 2 kHz spacing with preamp off) yielded a 3rd order intercept of +15 dBm and 2 tone dynamic range of 91dB.

Same thing at 50 khz spacing was 28.5 dBm and 100 dB preamp off with numbers dropping to 9 dBm and 96 dB with preamp on.

Mine seems pretty much like my KX3.

Maybe Wayne or Eric can get permission to post the review on the site if they have had a chance to vet it by now.
 
Apologies to anyone if I didn't get something exactly right or if the spellchecker got it, I'm literally at the park with my KX2 catching up on some reading in 50 mph wind gusts, but it's 52 and sunny!

73 Scott Ka9p
Make something good happen!

> On Mar 8, 2017, at 2:27 PM, Mike Morrow <[hidden email]> wrote:
>
>
>> Can't say for sure but doubt it has been reviewed yet. It is still
>> pretty new.
>
> It's been on the market for ten months...long enough for a popular rig to be reviewed.
>
> There's been nothing in QST's product reviews either.
>
> But then, Elecraft has not released much technical information either...still no schematics for the typical customer.
>
> Mike / KK5F
> ______________________________________________________________
> 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]
Reply | Threaded
Open this post in threaded view
|

Re: KX2 and Sherwood Eng. RX Performance Ranking?

Peter Lambert
In reply to this post by Ignacy
Do you not like the KX2 compressor ?, don't use it ?, so much so that you
take the TT-715 along portable or at home strictly ?.

Interested in your observations.  If there is such a huge difference in
compressors I think certain gents that monitor this list might see that as a
challenge.

73's Peter VK4JD

-----Original Message-----
From: Elecraft [mailto:[hidden email]] On Behalf Of Ignacy
Sent: Thursday, 9 March 2017 7:12 AM
To: [hidden email]
Subject: Re: [Elecraft] KX2 and Sherwood Eng. RX Performance Ranking?

I think the Sherwood ranking to KX2 means nothing unless you have a KW amp
(e.g., Expert 1.3k after mods) and run it in a contest or DXpeditions. After
all, nobody will hear you. Also nobody will hear your IMD3 except your next
door neighbor.

The biggest values of a QRP radio are:
1) convenience including good antenna tuner
2) well compressed signal on SSB if on phone

If KX2 is like KX3, big yes to 1) and not much to 2). But you can always buy
TT-715 and increase the punch of KX2 in SSB by 2-4 times.

Ignacy, NO9E






--
View this message in context:
http://elecraft.365791.n2.nabble.com/KX2-and-Sherwood-Eng-RX-Performance-Ran
king-tp7627760p7627775.html
Sent from the Elecraft mailing list archive at Nabble.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]
Reply | Threaded
Open this post in threaded view
|

Re: KX2 and Sherwood Eng. RX Performance Ranking?

w7aqk
In reply to this post by Phil Hystad-3
Rick and All,

The Sherwood performance chart is strictly about RX, not TX!!!  If you want
TX info, you need to go elsewhere.  That's what reviews like the ones in QST
can give you.

Rob has been doing this for a lot of years now, and on a strictly volunteer,
no pay, basis.  It has become somewhat "iconic", as a guide, but it's just
another set of data that may, or may not, be helpful to you.  It's not the
only thing you need, or should rely on, in evaluating a purchase.

you are right to be concerned about how clean a transmitter is, but there
are regulatory requirements about that.  If you don't meet those standards,
you supposedly can't sell it!!!  Besides, every rig is a QRP rig in part.
The higher power rigs start out with a low power generation section, and
step it up internally.  So, a K3, or a KX3, both start out at QRP levels.
If that low power section isn't proper, everything after that will be crap
as well.  So, everything in the chain needs to be operating within design
limits.  whether the step up is internal, or external, it still needs to be
in compliance with requirements.  You can hook a KX2 up to a KXPA100 up to a
KPA500, and it sounds just fine--provided you don't get greedy!

Most of the bad signals I hear are, I think, because someone is running
things at "maximum'!  There just seems to be a thirst for squeezing out the
last watt, running the audio gain too high, or too much compression,
whatever.  Maybe the regulatory limits aren't severe enough, but if you
don't push things too hard, I don't think you hear much of a problem.  These
days I don't hear that many rigs that sound bad unless there is some
operator error involved.  You used to hear a lot more of it that was not
self imposed.  Then again, some folks want a level of perfection that may
not be all that realistic.

Dave W7AQK





From: Rick WA6NHC <[hidden email]>

You're correct.  But in fairness, those items should be based on a
standard output power (not everyone wants QRP) and we already know that
you're the only company concerned about those points and you're the
clear winner.  ;-)

As I had said, it's more than numbers.  There are many other factors
involved in the 'test'.  Sheer numbers only tell the science side of the
operation; useless if you have to go through layers of menu to make a
frequent adjustment.

To me, knowing how clean a transmitter is should be on the list as well,
what crud does it produce at a given output, in all modes. While some
don't care they spread all over the band, I'd rather put the energy into
a CLEAN signal to concentrate that one extra erg to make the contact.
It's also about being a good neighbor; do unto others...  ;-)

Rick nhc

______________________________________________________________
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]
Reply | Threaded
Open this post in threaded view
|

Re: KX2 and Sherwood Eng. RX Performance Ranking?

Jim Brown-10
On Wed,3/8/2017 8:41 PM, w7aqk wrote:
> you are right to be concerned about how clean a transmitter is, but
> there are regulatory requirements about that. If you don't meet those
> standards, you supposedly can't sell it!!!

Sadly, it goes FAR beyond that.  See my comparison of ARRL Lab data for
selected popular rigs, some of them in the $10K range.   Some of the
most expensive are really dirty on CW. http://k9yc.com/TXNoise.pdf  Also
look at

http://k9yc.com/P3_Spectrum_Measurements.pdf  which consists of
measurements I've done myself of rigs that were made available to me.

> Most of the bad signals I hear are, I think, because someone is
> running things at "maximum'!

Partly true, but some rigs are FAR dirtier than others. The link about
concentrates on CW.  Many popular rigs generate splatter in their output
stage due to poor design of TX ALC. Using ALC between the rig and a
power amp to set TX power is recipe for splatter and clicks. Mistuning a
power amp, or failure to match an antenna to the power amp also causes
splatter and clicks.  See http://k9yc.com/K6XXAmpTalk.pdf

73, Jim K9YC

______________________________________________________________
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]
Reply | Threaded
Open this post in threaded view
|

Re: KX2 and Sherwood Eng. RX Performance Ranking?

Matt Murphy
I'd be willing to send Rob my KX2 for testing.

73,
Matt NQ6N

On Thu, Mar 9, 2017 at 2:42 AM, Jim Brown <[hidden email]> wrote:

> On Wed,3/8/2017 8:41 PM, w7aqk wrote:
>
>> you are right to be concerned about how clean a transmitter is, but there
>> are regulatory requirements about that. If you don't meet those standards,
>> you supposedly can't sell it!!!
>>
>
> Sadly, it goes FAR beyond that.  See my comparison of ARRL Lab data for
> selected popular rigs, some of them in the $10K range.   Some of the most
> expensive are really dirty on CW. http://k9yc.com/TXNoise.pdf  Also look
> at
>
> http://k9yc.com/P3_Spectrum_Measurements.pdf  which consists of
> measurements I've done myself of rigs that were made available to me.
>
> Most of the bad signals I hear are, I think, because someone is running
>> things at "maximum'!
>>
>
> Partly true, but some rigs are FAR dirtier than others. The link about
> concentrates on CW.  Many popular rigs generate splatter in their output
> stage due to poor design of TX ALC. Using ALC between the rig and a power
> amp to set TX power is recipe for splatter and clicks. Mistuning a power
> amp, or failure to match an antenna to the power amp also causes splatter
> and clicks.  See http://k9yc.com/K6XXAmpTalk.pdf
>
> 73, Jim K9YC
>
>
> ______________________________________________________________
> 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]
Reply | Threaded
Open this post in threaded view
|

Re: KX2 and Sherwood Eng. RX Performance Ranking?

Paul Van Dyke
I I was going to say the same thing .... my unit is #38 and would be glad
to lend it for testing

Paul. KB9AVO

On Mar 9, 2017 12:50 PM, "Matt Murphy" <[hidden email]> wrote:

> I'd be willing to send Rob my KX2 for testing.
>
> 73,
> Matt NQ6N
>
> On Thu, Mar 9, 2017 at 2:42 AM, Jim Brown <[hidden email]>
> wrote:
>
> > On Wed,3/8/2017 8:41 PM, w7aqk wrote:
> >
> >> you are right to be concerned about how clean a transmitter is, but
> there
> >> are regulatory requirements about that. If you don't meet those
> standards,
> >> you supposedly can't sell it!!!
> >>
> >
> > Sadly, it goes FAR beyond that.  See my comparison of ARRL Lab data for
> > selected popular rigs, some of them in the $10K range.   Some of the most
> > expensive are really dirty on CW. http://k9yc.com/TXNoise.pdf  Also look
> > at
> >
> > http://k9yc.com/P3_Spectrum_Measurements.pdf  which consists of
> > measurements I've done myself of rigs that were made available to me.
> >
> > Most of the bad signals I hear are, I think, because someone is running
> >> things at "maximum'!
> >>
> >
> > Partly true, but some rigs are FAR dirtier than others. The link about
> > concentrates on CW.  Many popular rigs generate splatter in their output
> > stage due to poor design of TX ALC. Using ALC between the rig and a power
> > amp to set TX power is recipe for splatter and clicks. Mistuning a power
> > amp, or failure to match an antenna to the power amp also causes splatter
> > and clicks.  See http://k9yc.com/K6XXAmpTalk.pdf
> >
> > 73, Jim K9YC
> >
> >
> > ______________________________________________________________
> > 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]
Reply | Threaded
Open this post in threaded view
|

Re: KX2 and Sherwood Eng. RX Performance Ranking?

Augie "Gus" Hansen
In reply to this post by Matt Murphy
I just spoke to Rob on the phone. His lab in Denver is just a few miles
from where I live and he will be testing my KX2 as soon as I can get it
to him.

We had previously tested my Ten-Tec Omni V back when it first hit the
market, and it was quite an eye opener for me to see his well equipped
lab and to observe the testing procedures he uses. (I also ended up
buying all the mods for my R-4C as well as several filters and an SE-3.
That's still a fine RX for both ham band use and SW listening.)

Gus Hansen
KB0YH


On 3/9/2017 11:49 AM, Matt Murphy wrote:
> I'd be willing to send Rob my KX2 for testing.

______________________________________________________________
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]
Reply | Threaded
Open this post in threaded view
|

Re: KX2 and Sherwood Eng. RX Performance Ranking?

Chris Tate - N6WM
Thanks Gus this will be interesting.  For me the KX2 could perform worse that it probably will, and I would still love it for its portability and down right cool factor.  That thing and a couple of small bundles of wire has you qrv anywhere in the world~  what a great little transceiver!

Chris
N6WM

________________________________________
From: Elecraft [[hidden email]] on behalf of Augie "Gus" Hansen [[hidden email]]
Sent: Thursday, March 09, 2017 2:34 PM
To: [hidden email]
Subject: Re: [Elecraft] KX2 and Sherwood Eng. RX Performance Ranking?

I just spoke to Rob on the phone. His lab in Denver is just a few miles
from where I live and he will be testing my KX2 as soon as I can get it
to him.

We had previously tested my Ten-Tec Omni V back when it first hit the
market, and it was quite an eye opener for me to see his well equipped
lab and to observe the testing procedures he uses. (I also ended up
buying all the mods for my R-4C as well as several filters and an SE-3.
That's still a fine RX for both ham band use and SW listening.)

Gus Hansen
KB0YH


On 3/9/2017 11:49 AM, Matt Murphy wrote:
> I'd be willing to send Rob my KX2 for testing.

______________________________________________________________
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]
Reply | Threaded
Open this post in threaded view
|

Re: KX2 and Sherwood Eng. RX Performance Ranking?

wayne burdick
Administrator
Hi Chris,

Thanks for your comments.

Of course the design goal for the KX2 was to pack as many bands, modes, and features into the smallest possible size, not to break records on RX measurements. Nonetheless, I'd expect the KX2 to come in somewhere in the top 20 or so on Rob's list. We'll see.

73,
Wayne
N6KR


On Mar 9, 2017, at 2:47 PM, Chris Tate - N6WM <[hidden email]> wrote:

> Thanks Gus this will be interesting.  For me the KX2 could perform worse that it probably will, and I would still love it for its portability and down right cool factor.  That thing and a couple of small bundles of wire has you qrv anywhere in the world~  what a great little transceiver!
>
> Chris
> N6WM
>
> ________________________________________
> From: Elecraft [[hidden email]] on behalf of Augie "Gus" Hansen [[hidden email]]
> Sent: Thursday, March 09, 2017 2:34 PM
> To: [hidden email]
> Subject: Re: [Elecraft] KX2 and Sherwood Eng. RX Performance Ranking?
>
> I just spoke to Rob on the phone. His lab in Denver is just a few miles
> from where I live and he will be testing my KX2 as soon as I can get it
> to him.
>
> We had previously tested my Ten-Tec Omni V back when it first hit the
> market, and it was quite an eye opener for me to see his well equipped
> lab and to observe the testing procedures he uses. (I also ended up
> buying all the mods for my R-4C as well as several filters and an SE-3.
> That's still a fine RX for both ham band use and SW listening.)
>
> Gus Hansen
> KB0YH

______________________________________________________________
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]
Reply | Threaded
Open this post in threaded view
|

Re: KX2 and Sherwood Eng. RX Performance Ranking?

w7aqk
In reply to this post by Phil Hystad-3
Hi All,

I'd be inclined to think the KX2 measurements won't knock your socks off.
Unlike the KX3, which was designed to be a close competitor to K3
performance (a K3 in a smaller package), the KX2 is more a pared down
version of the KX3, and some of that paring down probably affected the specs
somewhat.  I don't think this paring down process was allowed to noticeably
degrade performance.  I can tell you , though, that it is very hard to
notice any significant difference.  It has somewhat different architecture,
but is an excellent performer.  This sort of proves to me that being "top
tier" on Sherwood's stats is nice to talk about, but not necessarily
critical.  That's why so many owners of older rigs have a hard time
"hearing" the benefit of what newer designs purport to offer.

Wayne says he guesses the KX2 might rank somewhere in the top 20.  If so,
that's pretty darned good!!!  I'd also be inclined to bet that Wayne already
knows about where it will fall!  I just hope that, when the numbers do come
out, we don't go through an ad nauseam exchange about some spec being a big
problem or a serious disappointment.  A lot of these differences are only
determinable in a lab!  On the other hand, if something does seem to be a
real problem, I'd also bet it can be fixed!

Dave W7AQK


______________________________________________________________
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]
12