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K3 mod history?

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CX7TT

K3 mod history?

Does Elecraft keep a history of each K3 manufactured and the follow on
mods? Tracked by serial number? My #250 has been back to the mothership
several times for repairs/mods etc. I am not sure if my KXV3 has been
changed to the 'A' or not. Thinking about adding the P3 to the lineup
and not sure if rig is ready or needs the A mod.
73
Tom
CX7TT
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Dick Dievendorff

Re: K3 mod history?

The P3 does not require the KXV3A, the original KXV3 works fine. The main addition for the "A" has to do with a new TMP connector for the K144XV.

Dick, K6KR

On Dec 27, 2010, at 0:43, [hidden email] wrote:

> Does Elecraft keep a history of each K3 manufactured and the follow on
> mods? Tracked by serial number? My #250 has been back to the mothership
> several times for repairs/mods etc. I am not sure if my KXV3 has been
> changed to the 'A' or not. Thinking about adding the P3 to the lineup
> and not sure if rig is ready or needs the A mod.
> 73
> Tom
> CX7TT
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
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Julian, G4ILO

Re: K3 mod history?

Was there not a modification required to the original KXV3 on the IF output, a resistor change or something? It was in the back of my mind that I would need to do this mod if I ever got a P3 or other panadapter. (Though presumably the KXV3A which is on its way to me with a KXV144 doesn't need any modification.)

Julian, G4ILO

Dick Dievendorff wrote

The P3 does not require the KXV3A, the original KXV3 works fine. The main addition for the "A" has to do with a new TMP connector for the K144XV.

Dick, K6KR

On Dec 27, 2010, at 0:43, cx7tt@4email.net wrote:

> Does Elecraft keep a history of each K3 manufactured and the follow on
> mods? Tracked by serial number? My #250 has been back to the mothership
> several times for repairs/mods etc. I am not sure if my KXV3 has been
> changed to the 'A' or not. Thinking about adding the P3 to the lineup
> and not sure if rig is ready or needs the A mod.
> 73
> Tom
> CX7TT
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
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Julian, G4ILO. K2 #392 K3 #222 KX3 #110
* G4ILO's Shack - http://www.g4ilo.com
* KComm - http://www.g4ilo.com/kcomm.html
* KTune - http://www.g4ilo.com/ktune.html

Don Cunningham

Re: K3 mod history?

Yes, there was a "mod" and you get the resistor needed with the P3. You are
correct though, the KXV3A does not need the mod.
73,
Don, WB5HAK

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Dick Dievendorff

Re: K3 mod history?

In reply to this post by Julian, G4ILO

There is a single resistor mod on the RF board for greater IF gain for the P3. No mod to the KXV3 or KXV3A, but the P3 does use the IF out connector, so one of the KXV3 or KXV3A is used.

Dick, K6KR

On Dec 27, 2010, at 14:36, "Julian, G4ILO" <[hidden email]> wrote:

>
> Was there not a modification required to the original KXV3 on the IF output,
> a resistor change or something? It was in the back of my mind that I would
> need to do this mod if I ever got a P3 or other panadapter. (Though
> presumably the KXV3A which is on its way to me with a KXV144 doesn't need
> any modification.)
>
> Julian, G4ILO
>
>
> Dick Dievendorff wrote:
>>
>> The P3 does not require the KXV3A, the original KXV3 works fine. The main
>> addition for the "A" has to do with a new TMP connector for the K144XV.
>>
>> Dick, K6KR
>>
>> On Dec 27, 2010, at 0:43, [hidden email] wrote:
>>
>>> Does Elecraft keep a history of each K3 manufactured and the follow on
>>> mods? Tracked by serial number? My #250 has been back to the mothership
>>> several times for repairs/mods etc. I am not sure if my KXV3 has been
>>> changed to the 'A' or not. Thinking about adding the P3 to the lineup
>>> and not sure if rig is ready or needs the A mod.
>>> 73
>>> Tom
>>> CX7TT
>>> ______________________________________________________________
>>> 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
>> ______________________________________________________________
>> Elecraft mailing list
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>> Post: mailto:[hidden email]
>>
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>>
>>
>
>
> -----
> Julian, G4ILO. K2 #392 K3 #222.
> * G4ILO's Shack - http://www.g4ilo.com
> * KComm - http://www.g4ilo.com/kcomm.html
> * KTune - http://www.g4ilo.com/ktune.html
>
> --
> View this message in context: http://elecraft.365791.n2.nabble.com/K3-mod-history-tp5869008p5869894.html
> Sent from the Elecraft mailing list archive at Nabble.com.
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Ken Chandler

Re: K3 mod history?

In reply to this post by Julian, G4ILO

I believe that AFTER November 2009 !! all K3"s shipped had the Mod fitted as standard.

Ken..G0ORH

CW4EVER

Sent from my iPhone

On 27 Dec 2010, at 22:36, "Julian, G4ILO" <[hidden email]> wrote:

Julian, G4ILO

Re: K3 mod history?

In reply to this post by Dick Dievendorff

Dick Dievendorff wrote

There is a single resistor mod on the RF board for greater IF gain for the P3. No mod to the KXV3 or KXV3A, but the P3 does use the IF out connector, so one of the KXV3 or KXV3A is used.

Ah, that was probably the one I was thinking about. As it affected the IF output I probably assumed it was on the KXV3. Pity I don't have the required value of 1/8W resistor handy or I could have done the mod at the same time as I added the jack for powering the KXV144.

Julian, G4ILO. K2 #392 K3 #222 KX3 #110
* G4ILO's Shack - http://www.g4ilo.com
* KComm - http://www.g4ilo.com/kcomm.html
* KTune - http://www.g4ilo.com/ktune.html

Dick Dievendorff

Re: K3 mod history?

The mod requires removal of just the front half of the bottom cover, so it is about as easy as could be for a SMT part replacement.

73 de Dick, K6KR

On Dec 28, 2010, at 1:41, "Julian, G4ILO" <[hidden email]> wrote:

>
>
> Dick Dievendorff wrote:
>>
>> There is a single resistor mod on the RF board for greater IF gain for the
>> P3. No mod to the KXV3 or KXV3A, but the P3 does use the IF out connector,
>> so one of the KXV3 or KXV3A is used.
>>
> Ah, that was probably the one I was thinking about. As it affected the IF
> output I probably assumed it was on the KXV3. Pity I don't have the required
> value of 1/8W resistor handy or I could have done the mod at the same time
> as I added the jack for powering the KXV144.
>
> -----
> Julian, G4ILO. K2 #392 K3 #222.
> * G4ILO's Shack - http://www.g4ilo.com
> * KComm - http://www.g4ilo.com/kcomm.html
> * KTune - http://www.g4ilo.com/ktune.html
>
> --
> View this message in context: http://elecraft.365791.n2.nabble.com/K3-mod-history-tp5869008p5871414.html
> Sent from the [K3] mailing list archive at Nabble.com.
> ______________________________________________________________
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Matt Zilmer

Re: K3 mod history?

In reply to this post by CX7TT

Keeping a DCM-style record of each K3 would be virtually impossible.
Factory-installed K3 options could be tracked by the original
buyer/owner/builder but not by serial number, since many owners have
multiple radios. More to the point, options are also
bought/sold/traded in and out of K3's. The best example of this is
filters, but it applies equally to major subassemblies like the KXV3/A
or K144XV, etc.

I had a brief discussion with Eric about this in October. When a K3
(or K2, etc.) arrives back at the shop, the service person inventories
its installed options. But there isn't much more than a rev check of
the option module(s) since many have multiple revs.

The number of fielded radios probably far exceeds the number Elecraft
staff see for service or new installs in the shop, and there's no way
to know what options each K3 has installed from afar. Unless Elecraft
has developed some unique form of TelePresence. :)

The P3 works best with the IF gain mod installed. You can find mods
at www.elecraft.com, click on K3 Mods + App Notes. It's the second
mod shown from the top of the table. The mod is a simple resistor
change that is easily performed in the field, and parts are available
gratis (plus postage, I think).

I've done all my own mods, and few are "challenging" for a moderately
skilled kit builder. Mods aren't for everyone however, and YMMV. A
few require patience and studying the problem before jumping in, but
they are carefully crafted for ease and accessibility, and documented
extensively (mit photos yet!), and fairly easy to perform.

73,
matt W6NIA
K3 #24, P3 #12
TDY Tucson, AZ.

On Mon, 27 Dec 2010 12:43:44 +0400, you wrote:

>Does Elecraft keep a history of each K3 manufactured and the follow on
>mods? Tracked by serial number? My #250 has been back to the mothership
>several times for repairs/mods etc. I am not sure if my KXV3 has been
>changed to the 'A' or not. Thinking about adding the P3 to the lineup
>and not sure if rig is ready or needs the A mod.
>73
>Tom
>CX7TT
>______________________________________________________________
>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