New revision of KPA500 LPF T_R Switching rework Rev.E guide available

[Petr, OK1RP/M0SIS]

Hi folks,

just FYI...

Latest updated revision (rev.09-19) of the Elecraft KPA500 - LPF T/R Switch
Rework Rev. E guide is available on my blog here:

http://ok1rp.blogspot.com/2017/02/elecraft-kpa500-lpf-tr-switch-rework.html

Document updates in rev.09-19:

1. All 7 components to be modified or replaced in the modification are now
highlighted on the PA/LPF board picture

2. I added short instruction how to remove the PA/LPF module from the KPA500
cabinet (ref. to KPA500 Kit Assembly Instruction manual)

3. Picture of the PA/LPF board with all 7 components marks is available with
better resolution.

The Elecraft KPA500 LPF T_R Switching rework Rev.E guide_24Sep19 document is
also available in .pdf format upon email request.

Maybe it will help,





-----
73 - Petr, OK1RP
"Apple & Elecraft freak"
B:http://ok1rp.blogspot.com
MeWe: https://bit.ly/2HGPoDx
MeWe: https://bit.ly/2FmwvDt
--
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[Buck]

Do we have a first serial number that is "safe?" I hate to take mine
apart to see if this is needed.

Buck, k4ia
Honor Roll
8BDXCC
EasyWayHamBooks.com

On 9/24/2019 9:27 AM, Petr, OK1RP/M0SIS wrote:

> Hi folks,
>
> just FYI...
>
> Latest updated revision (rev.09-19) of the Elecraft KPA500 - LPF T/R Switch
> Rework Rev. E guide is available on my blog here:
>
> http://ok1rp.blogspot.com/2017/02/elecraft-kpa500-lpf-tr-switch-rework.html
>
> Document updates in rev.09-19:
>
> 1. All 7 components to be modified or replace in the modification are now
> highlighted on the PA/LPF board picture
>
> 2. I added short instruction how to remove the PA/LPF module from the KPA500
> cabinet (ref. to KPA500 Kit Assembly Instruction manual)
>
> 3. Picture of the PA/LPF board with all 7 components marks is available with
> better resolution.
>
> The Elecraft KPA500 LPF T_R Switching rework Rev.E guide_24Sep19 document is
> also available in .pdf format upon email request.
>
> Maybe it will help,
>
>
>
>
>
> -----
> 73 - Petr, OK1RP
> "Apple & Elecraft freak"
> B:http://ok1rp.blogspot.com
> MeWe: https://bit.ly/2HGPoDx
> MeWe: https://bit.ly/2FmwvDt
> --
> Sent from: http://elecraft.365791.n2.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]
>

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[Petr, OK1RP/M0SIS]

Buck,

unfortunately I have not info about the s/n relate to revisions of the
PA/LPF boards.
The best way would be to ask Elecraft service for that.
I know that rev. D or earlier revisions could be modified if needed.




-----
73 - Petr, OK1RP
"Apple & Elecraft freak"
B:http://ok1rp.blogspot.com
MeWe: https://bit.ly/2HGPoDx
MeWe: https://bit.ly/2FmwvDt
--
Sent from: http://elecraft.365791.n2.nabble.com/
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[w4sc-2]

I have serial # 1866.  I am the second owner, and Elecraft paperwork I received with the unit shows the unit was returned to Elecraft for “PA DISS Fault on 20M and 6M, with D10 and L6 being replace.

In addition , under warrantee, the T/R switch was updated ( Rev E?? ), and the 12M mod was performed.  There are NO details as to  exactly what was replaced.  There is no indication as to what the NEW rev level of the LPF would be as a result.

The upshot of all this is, if you have an earlier s/n, the above may apply!


73 de Ben W4SC

Sent from Mail for Windows 10

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[Petr, OK1RP/M0SIS]

Ben,

according to your information the LPF T_R Switching rework Rev.E, Elecraft
Parts Kit: E850607 has been installed already... "In addition , under
warrantee, the T/R switch was updated ( Rev E?? ), and the 12M mod was
performed."

So your PA/LPF board should be now marked D10 near on the white label.





-----
73 - Petr, OK1RP
"Apple & Elecraft freak"
B:http://ok1rp.blogspot.com
MeWe: https://bit.ly/2HGPoDx
MeWe: https://bit.ly/2FmwvDt
--
Sent from: http://elecraft.365791.n2.nabble.com/
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