Re: [Elecraft] K3 - No RF output - Fault resolved
Very many thanks to everyone who responded to my request for help. Happily the fault turned out to be something very simple. Rob at Elecraft suggested the LPA FETs may have failed as the current measurements I had taken indicated the FETs were not drawing the bias current they should be. I checked the voltage on the FETs on the LPA module and found it to be 6.5V. Looking at the circuit diagram this should have been 12V as the supply to them comes directly from the 12V supply. I noticed the 12 pin edge connector on the module did not seem to be fully seated. I eased it into place, the FET voltage returned to a solid 12V and the rig is now functioning normally. Again thanks to everyone who replied. 73, Peter, G4BVH On 6/15/2020 4:04 AM, G4BVH wrote: > Hi, > > > > I have had a fault develop on my K3 whereby there is no RF being produced. I > have emailed the details to Elecraft support and am hoping to receive a > reply with suggestions. However, I thought I would also send the details > here in case anyone can suggest something to try or investigate further. > > > > I have a K3, serial number 6482 which I built from a kit. It has worked > flawlessly since I built it. I have the 400Hz and 2.7kHz (2.8kHz?) filters > fitted and the 100W module but no other additions. > > > > A few days ago, it was running 20W of FT8 and I suddenly discovered that it > hadn't been transmitting. Everything appeared that it should be > transmitting: the red TX LED was lit, it was not in TEST mode (TX not > flashing) but there was no RF output displayed on the bar graph and > definitely nothing coming out on any mode. There is no RF if I wind down the > power below the 10W level, there is the usual relay click going through 12W > - 13W and still no RF above this level, ie on towards 100W. > > > > The K3 metering shows 13.5V and 0.84 on receive, 0.97A on the lower power > level setting and 1.18A on the higher power setting on transmit. The RF > output bar graph always displays 1 bar on transmit no matter what the power > level is set but there is no RF coming out. > > > > I tried the TX calibration but it fails saying the power level didn't reach > that required. > > > > The receiver works fine and I can hear the CW side tone and SSB, AM and FM > audio monitoring as normal. > > > > I have removed and reseated the front panel and also the 3 coax patch leads > behind the front panel but this made no difference. There is a yellow LED, > D33, on the main board which is lit on receive and goes out on transmit. > > > > The latest firmware is installed - I updated this a month or so ago. > > > > TX inhibit is OFF and the 20A breaker has not tripped. > > > > Any thoughts or suggestions gratefully received. > > > > Very many thanks and 73, > > > > Peter, G4BVH > > > > > > > -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus __ 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 g4...@cathyandpeter.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 g4...@cathyandpeter.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] K3 - No RF output
Check that TX INHIBIT is off in the menu. Victor 4X6GP > On 16 Jun 2020, at 0:35, G4BVH wrote: > > > > > > >Hi Bill,The rig doesnot produce any RF out in any mode. Everything > looks normal on the display, LEDs etc, the rig keys via mic or paddle but > just no RF.Some have suggested a bad internal cable connection or bad board > edge connector. I am working my way through those. 73, Peter G4BVH > > > >Get Outlook for iOS > > > > > > > On Mon, Jun 15, 2020 at 2:45 PM +0100, "Bill Steffey NY9H" > wrote: > > > > > > > > > > > DOES k3 xmit ssb with a mic in usb ? > > what mode ( TXDATA) are you using ... > > usually when I have that symptom, turns out that computer sound card is > NOT putting out TX audio to rig. > > >> On 6/15/2020 4:04 AM, G4BVH wrote: >> Hi, >> >> >> >> I have had a fault develop on my K3 whereby there is no RF being produced. I >> have emailed the details to Elecraft support and am hoping to receive a >> reply with suggestions. However, I thought I would also send the details >> here in case anyone can suggest something to try or investigate further. >> >> >> >> I have a K3, serial number 6482 which I built from a kit. It has worked >> flawlessly since I built it. I have the 400Hz and 2.7kHz (2.8kHz?) filters >> fitted and the 100W module but no other additions. >> >> >> >> A few days ago, it was running 20W of FT8 and I suddenly discovered that it >> hadn't been transmitting. Everything appeared that it should be >> transmitting: the red TX LED was lit, it was not in TEST mode (TX not >> flashing) but there was no RF output displayed on the bar graph and >> definitely nothing coming out on any mode. There is no RF if I wind down the >> power below the 10W level, there is the usual relay click going through 12W >> - 13W and still no RF above this level, ie on towards 100W. >> >> >> >> The K3 metering shows 13.5V and 0.84 on receive, 0.97A on the lower power >> level setting and 1.18A on the higher power setting on transmit. The RF >> output bar graph always displays 1 bar on transmit no matter what the power >> level is set but there is no RF coming out. >> >> >> >> I tried the TX calibration but it fails saying the power level didn't reach >> that required. >> >> >> >> The receiver works fine and I can hear the CW side tone and SSB, AM and FM >> audio monitoring as normal. >> >> >> >> I have removed and reseated the front panel and also the 3 coax patch leads >> behind the front panel but this made no difference. There is a yellow LED, >> D33, on the main board which is lit on receive and goes out on transmit. >> >> >> >> The latest firmware is installed - I updated this a month or so ago. >> >> >> >> TX inhibit is OFF and the 20A breaker has not tripped. >> >> >> >> Any thoughts or suggestions gratefully received. >> >> >> >> Very many thanks and 73, >> >> >> >> Peter, G4BVH >> >> >> >> >> >> >> > > -- > This email has been checked for viruses by Avast antivirus software. > https://www.avast.com/antivirus > > __ > 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 g4...@cathyandpeter.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 k2vco@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
Re: [Elecraft] K3 - No RF output
Hi Bill,The rig does not produce any RF out in any mode. Everything looks normal on the display, LEDs etc, the rig keys via mic or paddle but just no RF.Some have suggested a bad internal cable connection or bad board edge connector. I am working my way through those. 73, Peter G4BVH Get Outlook for iOS On Mon, Jun 15, 2020 at 2:45 PM +0100, "Bill Steffey NY9H" wrote: DOES k3 xmit ssb with a mic in usb ? what mode ( TXDATA) are you using ... usually when I have that symptom, turns out that computer sound card is NOT putting out TX audio to rig. On 6/15/2020 4:04 AM, G4BVH wrote: > Hi, > > > > I have had a fault develop on my K3 whereby there is no RF being produced. I > have emailed the details to Elecraft support and am hoping to receive a > reply with suggestions. However, I thought I would also send the details > here in case anyone can suggest something to try or investigate further. > > > > I have a K3, serial number 6482 which I built from a kit. It has worked > flawlessly since I built it. I have the 400Hz and 2.7kHz (2.8kHz?) filters > fitted and the 100W module but no other additions. > > > > A few days ago, it was running 20W of FT8 and I suddenly discovered that it > hadn't been transmitting. Everything appeared that it should be > transmitting: the red TX LED was lit, it was not in TEST mode (TX not > flashing) but there was no RF output displayed on the bar graph and > definitely nothing coming out on any mode. There is no RF if I wind down the > power below the 10W level, there is the usual relay click going through 12W > - 13W and still no RF above this level, ie on towards 100W. > > > > The K3 metering shows 13.5V and 0.84 on receive, 0.97A on the lower power > level setting and 1.18A on the higher power setting on transmit. The RF > output bar graph always displays 1 bar on transmit no matter what the power > level is set but there is no RF coming out. > > > > I tried the TX calibration but it fails saying the power level didn't reach > that required. > > > > The receiver works fine and I can hear the CW side tone and SSB, AM and FM > audio monitoring as normal. > > > > I have removed and reseated the front panel and also the 3 coax patch leads > behind the front panel but this made no difference. There is a yellow LED, > D33, on the main board which is lit on receive and goes out on transmit. > > > > The latest firmware is installed - I updated this a month or so ago. > > > > TX inhibit is OFF and the 20A breaker has not tripped. > > > > Any thoughts or suggestions gratefully received. > > > > Very many thanks and 73, > > > > Peter, G4BVH > > > > > > > -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus __ 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 g4...@cathyandpeter.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] K3 - No RF output
DOES k3 xmit ssb with a mic in usb ? what mode ( TXDATA) are you using ... usually when I have that symptom, turns out that computer sound card is NOT putting out TX audio to rig. On 6/15/2020 4:04 AM, G4BVH wrote: Hi, I have had a fault develop on my K3 whereby there is no RF being produced. I have emailed the details to Elecraft support and am hoping to receive a reply with suggestions. However, I thought I would also send the details here in case anyone can suggest something to try or investigate further. I have a K3, serial number 6482 which I built from a kit. It has worked flawlessly since I built it. I have the 400Hz and 2.7kHz (2.8kHz?) filters fitted and the 100W module but no other additions. A few days ago, it was running 20W of FT8 and I suddenly discovered that it hadn't been transmitting. Everything appeared that it should be transmitting: the red TX LED was lit, it was not in TEST mode (TX not flashing) but there was no RF output displayed on the bar graph and definitely nothing coming out on any mode. There is no RF if I wind down the power below the 10W level, there is the usual relay click going through 12W - 13W and still no RF above this level, ie on towards 100W. The K3 metering shows 13.5V and 0.84 on receive, 0.97A on the lower power level setting and 1.18A on the higher power setting on transmit. The RF output bar graph always displays 1 bar on transmit no matter what the power level is set but there is no RF coming out. I tried the TX calibration but it fails saying the power level didn't reach that required. The receiver works fine and I can hear the CW side tone and SSB, AM and FM audio monitoring as normal. I have removed and reseated the front panel and also the 3 coax patch leads behind the front panel but this made no difference. There is a yellow LED, D33, on the main board which is lit on receive and goes out on transmit. The latest firmware is installed - I updated this a month or so ago. TX inhibit is OFF and the 20A breaker has not tripped. Any thoughts or suggestions gratefully received. Very many thanks and 73, Peter, G4BVH -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus __ 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] K3 - No RF output
On 6/15/2020 1:10 AM, Dick Dievendorff wrote: Is TX test on? 73 de Dick, K6KR On Jun 15, 2020, at 01:06, G4BVH wrote: Hi, I have had a fault develop on my K3 whereby there is no RF being produced. I have emailed the details to Elecraft support and am hoping to receive a reply with suggestions. However, I thought I would also send the details here in case anyone can suggest something to try or investigate further. I have a K3, serial number 6482 which I built from a kit. It has worked flawlessly since I built it. I have the 400Hz and 2.7kHz (2.8kHz?) filters fitted and the 100W module but no other additions. A few days ago, it was running 20W of FT8 and I suddenly discovered that it hadn't been transmitting. Everything appeared that it should be transmitting: the red TX LED was lit,_it was not in TEST mode (TX not flashing)_ but there was no RF output displayed on the bar graph and definitely nothing coming out on any mode. There is no RF if I wind down the power below the 10W level, there is the usual relay click going through 12W - 13W and still no RF above this level, ie on towards 100W. The K3 metering shows 13.5V and 0.84 on receive, 0.97A on the lower power level setting and 1.18A on the higher power setting on transmit. The RF output bar graph always displays 1 bar on transmit no matter what the power level is set but there is no RF coming out. I tried the TX calibration but it fails saying the power level didn't reach that required. The receiver works fine and I can hear the CW side tone and SSB, AM and FM audio monitoring as normal. I have removed and reseated the front panel and also the 3 coax patch leads behind the front panel but this made no difference. There is a yellow LED, D33, on the main board which is lit on receive and goes out on transmit. The latest firmware is installed - I updated this a month or so ago. TX inhibit is OFF and the 20A breaker has not tripped. Any thoughts or suggestions gratefully received. Very many thanks and 73, Peter, G4BVH __ 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] K3 - No RF output
I had a problem with no output, but the radio was keying. I reseated all cables going to the synthesizer, and rf output returned. 73, Will, wj9b CWops #1085 CWA Advisor levels II and III http://cwops.org/ On Monday, June 15, 2020, 01:04:50 AM PDT, G4BVH wrote: Hi, I have had a fault develop on my K3 whereby there is no RF being produced. I have emailed the details to Elecraft support and am hoping to receive a reply with suggestions. However, I thought I would also send the details here in case anyone can suggest something to try or investigate further. I have a K3, serial number 6482 which I built from a kit. It has worked flawlessly since I built it. I have the 400Hz and 2.7kHz (2.8kHz?) filters fitted and the 100W module but no other additions. A few days ago, it was running 20W of FT8 and I suddenly discovered that it hadn't been transmitting. Everything appeared that it should be transmitting: the red TX LED was lit, it was not in TEST mode (TX not flashing) but there was no RF output displayed on the bar graph and definitely nothing coming out on any mode. There is no RF if I wind down the power below the 10W level, there is the usual relay click going through 12W - 13W and still no RF above this level, ie on towards 100W. The K3 metering shows 13.5V and 0.84 on receive, 0.97A on the lower power level setting and 1.18A on the higher power setting on transmit. The RF output bar graph always displays 1 bar on transmit no matter what the power level is set but there is no RF coming out. I tried the TX calibration but it fails saying the power level didn't reach that required. The receiver works fine and I can hear the CW side tone and SSB, AM and FM audio monitoring as normal. I have removed and reseated the front panel and also the 3 coax patch leads behind the front panel but this made no difference. There is a yellow LED, D33, on the main board which is lit on receive and goes out on transmit. The latest firmware is installed - I updated this a month or so ago. TX inhibit is OFF and the 20A breaker has not tripped. Any thoughts or suggestions gratefully received. Very many thanks and 73, Peter, G4BVH -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus __ 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 wlba...@bellsouth.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
Re: [Elecraft] K3 - No RF output
Is TX test on? 73 de Dick, K6KR > On Jun 15, 2020, at 01:06, G4BVH wrote: > > Hi, > > > > I have had a fault develop on my K3 whereby there is no RF being produced. I > have emailed the details to Elecraft support and am hoping to receive a > reply with suggestions. However, I thought I would also send the details > here in case anyone can suggest something to try or investigate further. > > > > I have a K3, serial number 6482 which I built from a kit. It has worked > flawlessly since I built it. I have the 400Hz and 2.7kHz (2.8kHz?) filters > fitted and the 100W module but no other additions. > > > > A few days ago, it was running 20W of FT8 and I suddenly discovered that it > hadn't been transmitting. Everything appeared that it should be > transmitting: the red TX LED was lit, it was not in TEST mode (TX not > flashing) but there was no RF output displayed on the bar graph and > definitely nothing coming out on any mode. There is no RF if I wind down the > power below the 10W level, there is the usual relay click going through 12W > - 13W and still no RF above this level, ie on towards 100W. > > > > The K3 metering shows 13.5V and 0.84 on receive, 0.97A on the lower power > level setting and 1.18A on the higher power setting on transmit. The RF > output bar graph always displays 1 bar on transmit no matter what the power > level is set but there is no RF coming out. > > > > I tried the TX calibration but it fails saying the power level didn't reach > that required. > > > > The receiver works fine and I can hear the CW side tone and SSB, AM and FM > audio monitoring as normal. > > > > I have removed and reseated the front panel and also the 3 coax patch leads > behind the front panel but this made no difference. There is a yellow LED, > D33, on the main board which is lit on receive and goes out on transmit. > > > > The latest firmware is installed - I updated this a month or so ago. > > > > TX inhibit is OFF and the 20A breaker has not tripped. > > > > Any thoughts or suggestions gratefully received. > > > > Very many thanks and 73, > > > > Peter, G4BVH > > > > > > > > -- > This email has been checked for viruses by Avast antivirus software. > https://www.avast.com/antivirus > __ > 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] K3 no RF Output
Check your TMP cable connections. 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] K3 no RF Output
Is VOX On? Sent from my iPhone ...nr4c. bill > On Jul 21, 2019, at 2:32 PM, Harald Fritzsche wrote: > > Dear Readers, > > i made a water damage of my K3. Meanwhile Receiver is working again, after > some repairs. > > But there is still no RF output. > > Main symptom is, that in case of TX (key down in CW) i find at J7 (8.215 MHz > TXIF1) a 8.230MHz signal, but no signal passing the filter, expected > approxymatetly 8.215Mhz too. > > Any suggestions? > > Regards > Harald > DD0VS > __ > 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] K3 No RF output
Looks like I lost a PIN diode in the TR switch, I've ordered replacements. Thanks to all who replied. Gregg -Original Message- From: Ian - Ham [mailto:km4ik@gmail.com] Sent: Sunday, November 09, 2014 18:23 PM To: 'Gregg W6IZT'; elecraft@mailman.qth.net Subject: RE: [Elecraft] K3 No RF output Gregg, did you accidentally put your rig into test mode? Are the antennas connected? Good luck finding the problem source. 73 de, --Ian Ian Kahn, KM4IK Roswell, GA EM74ua km4ik@gmail.com 10-10 #74624, North Georgia Chapter #2038 K3# 281, P3 #688, KPA500 #1468 -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Gregg W6IZT Sent: Sunday, November 9, 2014 1:15 PM To: elecraft@mailman.qth.net Subject: [Elecraft] K3 No RF output I am getting 0 RF output from my K3 on all bands regardless of the commanded power level. Pressing the TX button results in -- where the SWR would normally be displayed. Any suggestions or ideas on how to resolve this issue are greatly appreciated. Thanks Gregg w6izt __ 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 km4ik@gmail.com --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.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] K3 No RF output
Gregg, did you accidentally put your rig into test mode? Are the antennas connected? Good luck finding the problem source. 73 de, --Ian Ian Kahn, KM4IK Roswell, GA EM74ua km4ik@gmail.com 10-10 #74624, North Georgia Chapter #2038 K3# 281, P3 #688, KPA500 #1468 -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Gregg W6IZT Sent: Sunday, November 9, 2014 1:15 PM To: elecraft@mailman.qth.net Subject: [Elecraft] K3 No RF output I am getting 0 RF output from my K3 on all bands regardless of the commanded power level. Pressing the TX button results in -- where the SWR would normally be displayed. Any suggestions or ideas on how to resolve this issue are greatly appreciated. Thanks Gregg w6izt __ 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 km4ik@gmail.com --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.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] K3 No RF output
It means TX Inh(ibit) has been activated. Check your menu setting. 73, Rick, WA6NHC iPad = small keypad = typos = sorry ;-) > On Nov 9, 2014, at 10:14 AM, Gregg W6IZT wrote: > > I am getting 0 RF output from my K3 on all bands regardless of the commanded > power level. Pressing the TX button results in -- where the SWR would > normally be displayed. > > Any suggestions or ideas on how to resolve this issue are greatly > appreciated. > > Thanks > Gregg w6izt > > __ > 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 happymooseph...@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
Re: [Elecraft] K3 no RF output
Thanks to you guys for the ideas. The voltage does not vary when going to transmit mode. It stays a constant 13.5 volts and the current drain stays at about 1.18 amps. The horizontal lines are two lcd (end to end horizontal) lines that take the place of the frequency when I go to transmit. As soon as I go back to receive the frequency returns. These lines generally indicate that a device is not installed as I recall such as dvr3, kat3, etc. My wife says we had some distant lightning while I was at the DX convention but all equipment was grounded. I'm suspicious that static fried something. Bypassing the KPA3 does not make any difference. I do hear a side tone in CW but again, there is no RF being produced. Initially the problem was not being able to do 5 watt tx gain and the K3 shut off on its own. I was able to see power output while doing the 50 watt tx gain but as stated now there is no RF being produced at all. Thanks again and it looks like a trip to Elecraft for the K3. Todd -Original Message- From: Jim N7US Sent: Sunday, April 29, 2012 9:09 AM To: 'Elecraft List' Cc: 'Gary Surrency' Subject: Re: [Elecraft] K3 no RF output Todd, I experienced the same problem a couple of months ago. I never noticed a fault, but maybe it did it, and I didn't notice. I emailed Gary (supp...@elecraft.com) and tried the EE INIT including reloading previously saved configurations. I ended up sending the radio (S/N 3598) in. Keith found an IC that wasn't properly soldered, but really nothing else. It never malfunctioned while there. He did extended burn-in sessions and installed a couple updates, including De-Oxit to the front panel connections. It's worked fine since then. I was charged for an hour of time, and I imagine he spent more time than that. It was unsettling to not have conclusively determined the problem, especially since it seemed to happen without warning, but it's been working fine. 73, Jim N7US -Original Message- From: T Gahagan [mailto:wa7...@gmail.com] My K3 produces no RF in transmit at the 10 watt or 100 watt levels. The display shows two horizontal lines during transmit and shows 0.0 watts output. I have loaded older (4.47) firmware and then reloaded newer (4.48). I have done a re-initialization and reloaded all parameters. I removed the KPA3 and reinstalled it. No noticeable burned components were found. I believe the K3 did show, very briefly, a fault 6 and fault 7 but it was a very brief flash in the display. I thought SWR sensing diodes might have been the cause so I replaced D36 and D37. Any help would be appreciated. Thanks Todd __ 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 __ 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
Re: [Elecraft] K3 no RF output
Todd, I experienced the same problem a couple of months ago. I never noticed a fault, but maybe it did it, and I didn't notice. I emailed Gary (supp...@elecraft.com) and tried the EE INIT including reloading previously saved configurations. I ended up sending the radio (S/N 3598) in. Keith found an IC that wasn't properly soldered, but really nothing else. It never malfunctioned while there. He did extended burn-in sessions and installed a couple updates, including De-Oxit to the front panel connections. It's worked fine since then. I was charged for an hour of time, and I imagine he spent more time than that. It was unsettling to not have conclusively determined the problem, especially since it seemed to happen without warning, but it's been working fine. 73, Jim N7US -Original Message- From: T Gahagan [mailto:wa7...@gmail.com] My K3 produces no RF in transmit at the 10 watt or 100 watt levels. The display shows two horizontal lines during transmit and shows 0.0 watts output. I have loaded older (4.47) firmware and then reloaded newer (4.48). I have done a re-initialization and reloaded all parameters. I removed the KPA3 and reinstalled it. No noticeable burned components were found. I believe the K3 did show, very briefly, a fault 6 and fault 7 but it was a very brief flash in the display. I thought SWR sensing diodes might have been the cause so I replaced D36 and D37. Any help would be appreciated. Thanks Todd __ 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
