Re: [Elecraft] new revision of KPA500 LPF T_R Switching rework Rev.E guide available
Andy do not glue to date of first post date in the link. Please follow and refer to its revision date in the end of the document in the link as it keeps updated as much as possible. Simply check the revision label on the PA/LPF board of your KPA500 and if you have rev. D9 or earlier with surface mount board (NO earlier rev. A or B with thru-hole yellow capacitors board) then the mod is for you if needed. As I mentioned it is not neccessary to do it if you hate to open and dismantling your KPA500 if all is currently working well for you... There is tons of amps that works like champ even they are old and not modified. So if you have not issues and do not want to make prevent mod then stay calm. BTW: yes it is official mod, Elecraft parts kit: E850607 good luck, Petr, OK1RP - 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:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] new revision of KPA500 LPF T_R Switching rework Rev.E guide available
Please explain. 73, Bill K9YEQ https://wrj-tech.com/ -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Wes Sent: Monday, September 30, 2019 6:58 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] new revision of KPA500 LPF T_R Switching rework Rev.E guide available I don't believe that configuration management is Elecraft's strong suit. On 9/30/2019 4:17 PM, Andy Durbin wrote: > Elecraft must be enjoying the confusion. > > Andy, k3wyc > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k9...@live.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] new revision of KPA500 LPF T_R Switching rework Rev.E guide available
I don't believe that configuration management is Elecraft's strong suit. On 9/30/2019 4:17 PM, Andy Durbin wrote: Elecraft must be enjoying the confusion. Andy, k3wyc __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] new revision of KPA500 LPF T_R Switching rework Rev.E guide available
"It is this surface mount board that needs its parts changed". I suspect that should be - "some early surface mount boards may need their parts changed". As I posted earlier, and show again below, this mod appear to have been introduced late 2013. Elecraft must be enjoying the confusion. If not, someone would post which serial numbers may need to be modified. Andy, k3wyc From: Andy Durbin Sent: Tuesday, September 24, 2019 9:38 AM To: elecraft@mailman.qth.net Subject: [Elecraft] new revision of KPA500 LPF T_R Switching rework Rev.E guide available The posted link points to a web page dated 7 February 2017. Was the page content changed without changing the date? I checked my KPA500 schematics and the component values listed in the mod instructions all seem to be the same as those shown in "KPA 500 TR Switch" page 3 of 3, rev D2, dated 12/5/13. Should I assume that all KPA500 delivered after 2013 would have this modification included? 73, Andy, k3wyc __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] new revision of KPA500 LPF T_R Switching rework Rev.E guide available
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/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] new revision of KPA500 LPF T_R Switching rework Rev.E guide available
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 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] new revision of KPA500 LPF T_R Switching rework Rev.E guide available
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/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] new revision of KPA500 LPF T_R Switching rework Rev.E guide available
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:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to radiok...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
