[Elecraft] KPA1500 SWR meter
I have noticed that after my KPA1500 gets above 50C the SWR indicator light starts to show intermittent high SWR. My KPA500 did not do that. I'm using resonant yagis and the digital SWR meter shows 1.1:1 and doesn't change nor does the SWR indicator on the K3S. It seems the SWR indicator lights are acting independent of the meter on the KPA1500 screen. RF? I have not had any faults or shut downs as a result of the indicated high SWR. The amp operates wonderfully, but the indicator lights are a bit bothersome. Anyone have similar issues? 73, Mike AD5A __ 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] Hook up for K3, P3, KPA500, KAT500
Thanks Don. I finally figured that out. I also found a spare KPAK3AUX cable (I have no idea) in the shack. I'm up and running. 73, Mike AD5A Just a side note, I thought I ordered the KAT500-F, but I guess I ordered the kit. I brought the unopened box with me to a second QTH in Santa Fe, NM, where I was going to plug and play. Well I opened the box and realized that I had some work to do. I finished late and then tried to connect everything. My brain wasn't in high gear and reconciling the two diagrams just wasn't in the cards. After some coffee this morning and reviewing the drawings again, it made some sense. Then the fortuitous discovery of the needed cable, all is well. > On Feb 13, 2017, at 11:04 AM, Don Wilhelm <donw...@embarqmail.com> wrote: > > Mike, > > It does not include the P3, but there is a diagram for the rest on page 5 of > the KAT500 Owner's Manual. > Connect the P3 and K3 as shown in the P3 manual, These connections are > independent of the rest of the K-line connections. > > 73, > Don W3FPR > >> On 2/13/2017 10:48 AM, Mike Crownover wrote: >> I can't seem to find a hook up diagram for the entire K Line. I know I've >> seen it somewhere but can't find it. Can someone direct me to a diagram? >> >> Thanks in advance. >> >> Mike AD5A >> __ >> 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 donw...@embarqmail.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
[Elecraft] Hook up for K3, P3, KPA500, KAT500
I can't seem to find a hook up diagram for the entire K Line. I know I've seen it somewhere but can't find it. Can someone direct me to a diagram? Thanks in advance. Mike AD5A __ 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] KAT500 Thermal Pad
I found it in the XMTR SO239 bag. > On Feb 12, 2017, at 7:56 PM, Harry Yingst <hlyin...@yahoo.com> wrote: > > > Have you checked in the envelope with the Serial Number? > > > > > From: Mike Crownover <a...@gvtc.com> > To: elecraft@mailman.qth.net > Sent: Sunday, February 12, 2017 9:51 PM > Subject: [Elecraft] KAT500 Thermal Pad > > I am putting together the KAT500 Tuner and the Thermal Tape for R6 on the > bottom of the board is not in the parts bag. Is there any substitute for the > thermal tape or should I wait to get it from Elecraft? > > Mike AD5A > __ > 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 hlyin...@yahoo.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
[Elecraft] KAT500 Thermal Pad
I am putting together the KAT500 Tuner and the Thermal Tape for R6 on the bottom of the board is not in the parts bag. Is there any substitute for the thermal tape or should I wait to get it from Elecraft? Mike AD5A __ 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] FPF problem
Ron, Thanks for the recommendation. I followed the procedure to remove the front panel, but the result was the same. Thanks again, Mike AD5A - Original Message - From: "Ron D'Eau Claire" <r...@cobi.biz> To: "Mike Crownover" <a...@gvtc.com>, elecraft@mailman.qth.net Sent: Friday, May 27, 2016 9:20:14 PM Subject: RE: [Elecraft] FPF problem Hello Mike: Depending upon the environment, some older K3 rigs suffered from oxidation of the contacts on the connectors. In your case I'd suspect the connectors between the front panel and the main RF board. Simply removing/replacing the front panel should take care of it if I'm correct. The simple procedure is described in the K3 kit assembly manual on the Elecraft reflector here: http://www.elecraft.com/manual/E740259%20K3s%20Assembly%20Manual%20Rev%20B1. pdf See page 41. 73, Ron AC7AC -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Mike Crownover Sent: Friday, May 27, 2016 8:01 PM To: elecraft@mailman.qth.net Subject: [Elecraft] FPF problem I have a K3 that has been sitting on shelf for a while. I powered it up today, after it was on for ~5 minuted, I get a ERR FPF. After a little research I learn I need to reload the flash file. I used the utility to update the MCU and then when the FPF tried to load I got this message. Elecraft K3 Utility Revision 1.15.12.7 OS Version 10.0 Build 10586 K3 MCU revision 05.38. RS-232 speed 38400 bit/s. Waiting 4 seconds for flash memory erase Sending firmware file C:\Users\ad5a_000\AppData\Roaming\Elecraft\K3 Firmware\hfpf0125.hex to FPF Error code 0xE248: No response to poll while synchronizing to buffer boundary FPF verification failed. Reload FPF. Click "Close" to close this window I have retried numerous times and get the same message. Any ideas. Mike AD5A __ 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 r...@elecraft.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] FPF problem
The error was FP3, no FPF...Mike AD5A - Original Message - From: "Mike Crownover" <a...@gvtc.com> To: elecraft@mailman.qth.net Sent: Friday, May 27, 2016 9:01:09 PM Subject: [Elecraft] FPF problem I have a K3 that has been sitting on shelf for a while. I powered it up today, after it was on for ~5 minuted, I get a ERR FPF. After a little research I learn I need to reload the flash file. I used the utility to update the MCU and then when the FPF tried to load I got this message. Elecraft K3 Utility Revision 1.15.12.7 OS Version 10.0 Build 10586 K3 MCU revision 05.38. RS-232 speed 38400 bit/s. Waiting 4 seconds for flash memory erase Sending firmware file C:\Users\ad5a_000\AppData\Roaming\Elecraft\K3 Firmware\hfpf0125.hex to FPF Error code 0xE248: No response to poll while synchronizing to buffer boundary FPF verification failed. Reload FPF. Click "Close" to close this window I have retried numerous times and get the same message. Any ideas. Mike AD5A __ 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 a...@gvtc.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
[Elecraft] FPF problem
I have a K3 that has been sitting on shelf for a while. I powered it up today, after it was on for ~5 minuted, I get a ERR FPF. After a little research I learn I need to reload the flash file. I used the utility to update the MCU and then when the FPF tried to load I got this message. Elecraft K3 Utility Revision 1.15.12.7 OS Version 10.0 Build 10586 K3 MCU revision 05.38. RS-232 speed 38400 bit/s. Waiting 4 seconds for flash memory erase Sending firmware file C:\Users\ad5a_000\AppData\Roaming\Elecraft\K3 Firmware\hfpf0125.hex to FPF Error code 0xE248: No response to poll while synchronizing to buffer boundary FPF verification failed. Reload FPF. Click "Close" to close this window I have retried numerous times and get the same message. Any ideas. Mike AD5A __ 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] KPA500 problem
Guy, I plugged this KPA into the same socket as my current KPA is operating from, so the 120v power source is not the problem. I also swapped power cords with one that was working. Thanks, Mike AD5A > On Feb 16, 2016, at 12:07 PM, Guy Olinger K2AV <k2av@gmail.com> wrote: > > Hmm. One of the reasons people get a KPA500 is because they can't get 240 to > the shack and the KPA will run on 120V. That makes it non-idiotic to inquire > upon the 120V supply. > > I heard of a problem something like this, not a KPA500, that turned out to be > a defective wall outlet. I would imagine that the KPA500 is unforgiving of a > precipitous drop in AC voltage. In the case I cite, all kinds of wierdness in > the shack went away when the wall outlet was replaced. The defective wall > outlet had internal blades that were badly pitted. It was also very old by > any means of estimate. > > I also heard of a power cord that was not crimped correctly inside the molded > plug, discovered upon dissection style autopsy afterwards. > > Other issues would be aluminum wiring that had not been tightened up, a > single bad socket in a power strip, etc. Also have heard of a wall socket > connection where one of the screws on the outlet had never been tightened. > > A KPA500 is a hard pull on a 120V socket. It would not matter to the AC power > that you were just hitting 10 watts, because you turn on the idling current > as soon as any RF is sensed. > > Do not assume that the 120V supply is A-OK. Verify everything on that 120V > circuit, up to and including the breaker in the breaker box. Breakers go bad > too. > > In any event the very best of luck chasing this aggravating problem. Please > let us all know what finally turns out to be the actual problem and what you > did to fix it. > > 73, Guy K2AV > >> On Tue, Feb 16, 2016 at 11:48 AM, Cliff Frescura <c...@cfcorp.com> wrote: >> Can you measure the 110V line voltage on key down? Is it stiff enough? >> >> 73, >> >> Cliff K3LL/6 >> >> -Original Message- >> From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Mike >> Crownover >> Sent: Tuesday, February 16, 2016 8:22 AM >> To: 'Nr4c' >> Cc: elecraft@mailman.qth.net >> Subject: Re: [Elecraft] KPA500 problem >> >> Bill, >> >> Did that, it's set for 110v. I used the yellow tap, which gives me 75 v, >> right in the middle of the spec. I did try the other two, but same behavior. >> >> Thnaks, >> >> Mike AD5A >> >> -Original Message- >> From: Nr4c [mailto:n...@widomaker.com] >> Sent: Tuesday, February 16, 2016 10:19 AM >> To: Mike Crownover <a...@gvtc.com> >> Subject: Re: [Elecraft] KPA500 problem >> >> What input voltage is it configured for? >> >> Check manual for voltage tap info. >> >> Sent from my iPhone >> ...nr4c. bill >> >> >> > On Feb 15, 2016, at 11:11 PM, Mike Crownover <a...@gvtc.com> wrote: >> > >> > I just bought a lightly used KPA500. It arrived from the seller, well >> > packed and complete with cables, manuals, etc. I turned the amp on, >> > interfaced it with my K3, keyed the radio and the KPA500 immediately >> > shut-off. No fault light or error code, nothing. It shuts down just as >> > if I had pressed the power button, the fan runs, etc... The antenna is >> > resonant 1:1, I've lowered input power to 10 watts, swapped coax, >> > hooked it up to another K3, used RCA to RCA cable, the Elecraft cable, >> > etc.. When down to 10 watts input, I can tap the paddle like a >> > straight key lightly and the amp works, but put two dits together and >> > it >> shuts down. >> > >> > >> > >> > Has anyone had an experienced anything like this. I keep thinking this >> > has to be something simple. >> > >> > >> > >> > Mike AD5A >> > >> > __ >> > 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 >> > n...@widomaker.com >> >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/
Re: [Elecraft] KPA500 problem
Bill, Did that, it's set for 110v. I used the yellow tap, which gives me 75 v, right in the middle of the spec. I did try the other two, but same behavior. Thnaks, Mike AD5A -Original Message- From: Nr4c [mailto:n...@widomaker.com] Sent: Tuesday, February 16, 2016 10:19 AM To: Mike Crownover <a...@gvtc.com> Subject: Re: [Elecraft] KPA500 problem What input voltage is it configured for? Check manual for voltage tap info. Sent from my iPhone ...nr4c. bill > On Feb 15, 2016, at 11:11 PM, Mike Crownover <a...@gvtc.com> wrote: > > I just bought a lightly used KPA500. It arrived from the seller, well > packed and complete with cables, manuals, etc. I turned the amp on, > interfaced it with my K3, keyed the radio and the KPA500 immediately > shut-off. No fault light or error code, nothing. It shuts down just as > if I had pressed the power button, the fan runs, etc... The antenna is > resonant 1:1, I've lowered input power to 10 watts, swapped coax, > hooked it up to another K3, used RCA to RCA cable, the Elecraft cable, > etc.. When down to 10 watts input, I can tap the paddle like a > straight key lightly and the amp works, but put two dits together and it shuts down. > > > > Has anyone had an experienced anything like this. I keep thinking this > has to be something simple. > > > > Mike AD5A > > __ > 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 > n...@widomaker.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] KPA500 problem
Did that..."power lost without controlled shutdown" Thanks, Mike AD5A -Original Message- From: Dick Dievendorff [mailto:d...@elecraft.com] Sent: Tuesday, February 16, 2016 9:53 AM To: 'Mike Crownover' <a...@gvtc.com>; 'AJ8MH Radio' <aj8mh-ra...@charter.net> Subject: RE: [Elecraft] KPA500 problem I would recommend connecting the KPA Utility and display the fault table. 73 de Dick, K6KR -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Mike Crownover Sent: Tuesday, February 16, 2016 07:39 To: 'AJ8MH Radio' <aj8mh-ra...@charter.net> Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] KPA500 problem Joe, I already reset all menu items to default. I've also done the Key Out to PA Key configuration. I've also done the 10 watt exercise, I am getting the asterisk without the underscore and the ~200 watts out. But only when I just tap the paddle. If I string dits together, even at low power the amp shuts off. The K3 isn't shutting down. I sort of in the camp that it's something internal, however, I've never built one of these. I did get the assembly manual and have looked at some obvious ground connections and all seem in order. Thanks for your thoughts. Mike AD5A -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of AJ8MH Radio Sent: Tuesday, February 16, 2016 9:26 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] KPA500 problem No fault codes? Double check amp's menu items and set all to default before test. Remove all cables. Connect dummy load directly to amp. Connect RF in from K3. Connect "Key Out" to "PA Key." Manually select same band on rig and amp. Set K3 for 10 watts drive. Select "OPER." Now, try and key amp. You should see asterisk in amp's display window and around 200 watts out. An asterisk with underscore indicates amp is being inhibited. If amp still fails, I would check all connections internal to the amp. Guess you could also see if the K3 is shutting down... 73, Joe ( AJ8MH-Radio ) On 2/16/2016 9:33 AM, Mike Crownover wrote: 73, Joe ( AJ8MH-Radio ) On 2/16/2016 9:33 AM, Mike Crownover wrote: __ 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 a...@gvtc.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 d...@elecraft.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] KPA500 problem
Joe, I already reset all menu items to default. I've also done the Key Out to PA Key configuration. I've also done the 10 watt exercise, I am getting the asterisk without the underscore and the ~200 watts out. But only when I just tap the paddle. If I string dits together, even at low power the amp shuts off. The K3 isn't shutting down. I sort of in the camp that it's something internal, however, I've never built one of these. I did get the assembly manual and have looked at some obvious ground connections and all seem in order. Thanks for your thoughts. Mike AD5A -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of AJ8MH Radio Sent: Tuesday, February 16, 2016 9:26 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] KPA500 problem No fault codes? Double check amp's menu items and set all to default before test. Remove all cables. Connect dummy load directly to amp. Connect RF in from K3. Connect "Key Out" to "PA Key." Manually select same band on rig and amp. Set K3 for 10 watts drive. Select "OPER." Now, try and key amp. You should see asterisk in amp's display window and around 200 watts out. An asterisk with underscore indicates amp is being inhibited. If amp still fails, I would check all connections internal to the amp. Guess you could also see if the K3 is shutting down... 73, Joe ( AJ8MH-Radio ) On 2/16/2016 9:33 AM, Mike Crownover wrote: 73, Joe ( AJ8MH-Radio ) On 2/16/2016 9:33 AM, Mike Crownover wrote: __ 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 a...@gvtc.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] KPA500 problem
Mark, Menu is set to K3 I've configured the amp 2 different ways, Key Out to PA Key, with 2 different cablesno difference KPA500 AUX from K3 to KPA 500, with a known good cable, ( I have a K3 line already) and the one that came with itno difference. The band changes all work fine. I'm certainly not a technical guy, but it seems to me the transfer from radio to amp to key the amp is working fine. There is something after key down that is shorting or somehow malfunctioning that shuts the amp down. I can turn the power on the K3 down to 10 watts and tap the paddle and the amp works, but put two dits in a row and it shuts down. I've inspected the inside for transformer damage and there is nothing visible. The one lead that Elecraft gave me was that the screws for the tilt bar were installed backwards, leading to the possibility of a short with the transformer. I had to remove the transformer to reverse those screws, (they sent me the procedure), but that wasn't the problem either. I didn't use a configuration that would require the interrupter. Thanks for your comments and thoughts. 73, Mike AD5A -Original Message- From: Mark E. Musick [mailto:markmus...@sbcglobal.net] Sent: Tuesday, February 16, 2016 1:11 AM To: 'Mike Crownover' <a...@gvtc.com> Subject: RE: [Elecraft] KPA500 problem Mike, First connect the amp to a dummy load and see how it behaves. This eliminates the antenna. Yes, I know the SWR is 1:1, but it eliminates it as a possible problem and you are not putting a signal on the air causing QRM. Go into the KPA500 menu and make sure RADIO is set to K3. Are you using the key out of the K3 to the key in (PA KEY) on the amp for keying the amp or are you keying the amp through the cable connected to the K3 accessory socket? If you are using key out to key in, did you put the keying interrupter for pin 11 on the K3 accessory jack? Try the basic cabling setup as described in the manual. Just connect RF IN from the K3, RF OUT to the dummy load, KEY OUT on the K3 to PA KEY on the KPA500. Leave the cable from the K3 accessory socket to the KPA500 AUX socket disconnected. See if it operates in this configuration. Let us know the results. Mark Musick, WB9CIF -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Mike Crownover Sent: Tuesday, February 16, 2016 4:12 AM To: elecraft@mailman.qth.net Subject: [Elecraft] KPA500 problem I just bought a lightly used KPA500. It arrived from the seller, well packed and complete with cables, manuals, etc. I turned the amp on, interfaced it with my K3, keyed the radio and the KPA500 immediately shut-off. No fault light or error code, nothing. It shuts down just as if I had pressed the power button, the fan runs, etc... The antenna is resonant 1:1, I've lowered input power to 10 watts, swapped coax, hooked it up to another K3, used RCA to RCA cable, the Elecraft cable, etc.. When down to 10 watts input, I can tap the paddle like a straight key lightly and the amp works, but put two dits together and it shuts down. Has anyone had an experienced anything like this. I keep thinking this has to be something simple. Mike AD5A __ 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 markmus...@sbcglobal.net __ 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
[Elecraft] KPA500 problem
I just bought a lightly used KPA500. It arrived from the seller, well packed and complete with cables, manuals, etc. I turned the amp on, interfaced it with my K3, keyed the radio and the KPA500 immediately shut-off. No fault light or error code, nothing. It shuts down just as if I had pressed the power button, the fan runs, etc... The antenna is resonant 1:1, I've lowered input power to 10 watts, swapped coax, hooked it up to another K3, used RCA to RCA cable, the Elecraft cable, etc.. When down to 10 watts input, I can tap the paddle like a straight key lightly and the amp works, but put two dits together and it shuts down. Has anyone had an experienced anything like this. I keep thinking this has to be something simple. Mike AD5A __ 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
