Re: [Elecraft] kinda like other post K3 turns off.
Thank everyone for you suggestions. Here is what I found and did to fix it. I disassembled my station and then started connecting one thing at a time until I found the problem. It turned out that my Signalink USB sound card was what was picking up the feed back and introducing it back into the K3. I put ferrite beads on everything and also did the aluminum tape mod on the signalink. All is well now. I can run full power with no problems. Thanks again Gerald On Sat, Nov 2, 2013 at 9:00 AM, Martin Ewing a...@ewing.homedns.org wrote: If the problem came on suddenly, that suggests a connector or wiring problem. Check to be sure everything is tight and there are no breaks in the shield, etc. 73 de AA6E On 11/02/2013 12:47 AM, KC6CNN wrote: The two antennas are a zs6bkw and a OCF dipole. Both are up about 32 feet and the ends are 12 foot off the ground. The coax is LMR400 and is new. The antennas are located on the opposite side of the house from the shack. The amp is powered by a 240 volt plug and the power supply is 110 volt. This happens in all modes, CW, Voice, Psk31. It happens on all bands. It only happens when the power is increased to 300 watts or higher. My station ran great for several months 6 to 12 months. Then all of a sudden this problem showed up. I will start filtering everything tomorrow to see if that helps. Thanks for the replies I will try your suggestions Gerald - KC6CNN - Gerald K2 # 5486 K3 # 6254 KX3 # 757 -- View this message in context: http://elecraft.365791.n2. nabble.com/kinda-like-other-post-K3-turns-off-tp7580359p7580362.html Sent from the Elecraft mailing list archive at 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 __ 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] kinda like other post K3 turns off.
If the problem came on suddenly, that suggests a connector or wiring problem. Check to be sure everything is tight and there are no breaks in the shield, etc. 73 de AA6E On 11/02/2013 12:47 AM, KC6CNN wrote: The two antennas are a zs6bkw and a OCF dipole. Both are up about 32 feet and the ends are 12 foot off the ground. The coax is LMR400 and is new. The antennas are located on the opposite side of the house from the shack. The amp is powered by a 240 volt plug and the power supply is 110 volt. This happens in all modes, CW, Voice, Psk31. It happens on all bands. It only happens when the power is increased to 300 watts or higher. My station ran great for several months 6 to 12 months. Then all of a sudden this problem showed up. I will start filtering everything tomorrow to see if that helps. Thanks for the replies I will try your suggestions Gerald - KC6CNN - Gerald K2 # 5486 K3 # 6254 KX3 # 757 -- View this message in context: http://elecraft.365791.n2.nabble.com/kinda-like-other-post-K3-turns-off-tp7580359p7580362.html Sent from the Elecraft mailing list archive at 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 __ 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] kinda like other post K3 turns off.
I just read a message about a K3 that had turned off and he could not get it to turn back on. I have kinda the same issue but different. I have my K3 connected to a Alpha 76pa amp. I operated it for several months, then all a sudden I would transmit and the K3 would turn off. It would not turn back on until the power supply was turned off and then back on. I checked the Astron 35amp power supply and it is not crow baring The voltage remains good and the SWR are fine. I changed coax cables, and even changed antennas. The problem still keeps happening. I changed power supplies and it still does it. I lowered the drive power on the K3 to 10 watts and tuned the Alpha. I was able to up the drive till the power was around 300 watts. At 300 watts the K3 turned off again. This is repeatable and always turns off around 300 watts. I took the amp to a friend and it performed great. I hooked my station up again and took the antenna off and ran it into a dummy load and it performed flawlessly. I even had the dummy load sitting on the floor between the amp and K3 and it had no issues. I have checked and do not get shocked or bitten by anything in the shack. I hooked it back up and it still turns off. I am thinking that I might have a rf feed back problem, but thought that it would have shown itself when the dummy load was sitting close to the K3 at full legal power. Has anyone had any experiences like this or any suggestions to help me out. Thank you Gerald - KC6CNN - Gerald K2 # 5486 K3 # 6254 KX3 # 757 -- View this message in context: http://elecraft.365791.n2.nabble.com/kinda-like-other-post-K3-turns-off-tp7580359.html Sent from the Elecraft mailing list archive at 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
Re: [Elecraft] kinda like other post K3 turns off.
You're getting RF on the power system. Running with no issues into a dummy load at full power proves this. Try adding a common mode choke (aka current balun, but that's inaccurate) to your antenna system. If that doesn't help, filter the AC and DC power leads with ferrites (cords wound around ferrite donuts) or move the power supply further from the antenna. 73, Rick wa6nhc Tiny iPhone 5 keypad, typos are inevitable On Nov 1, 2013, at 9:15 PM, KC6CNN kc6...@gmail.com wrote: I just read a message about a K3 that had turned off and he could not get it to turn back on. I have kinda the same issue but different. I have my K3 connected to a Alpha 76pa amp. I operated it for several months, then all a sudden I would transmit and the K3 would turn off. It would not turn back on until the power supply was turned off and then back on. I checked the Astron 35amp power supply and it is not crow baring The voltage remains good and the SWR are fine. I changed coax cables, and even changed antennas. The problem still keeps happening. I changed power supplies and it still does it. I lowered the drive power on the K3 to 10 watts and tuned the Alpha. I was able to up the drive till the power was around 300 watts. At 300 watts the K3 turned off again. This is repeatable and always turns off around 300 watts. I took the amp to a friend and it performed great. I hooked my station up again and took the antenna off and ran it into a dummy load and it performed flawlessly. I even had the dummy load sitting on the floor between the amp and K3 and it had no issues. I have checked and do not get shocked or bitten by anything in the shack. I hooked it back up and it still turns off. I am thinking that I might have a rf feed back problem, but thought that it would have shown itself when the dummy load was sitting close to the K3 at full legal power. Has anyone had any experiences like this or any suggestions to help me out. Thank you Gerald - KC6CNN - Gerald K2 # 5486 K3 # 6254 KX3 # 757 -- View this message in context: http://elecraft.365791.n2.nabble.com/kinda-like-other-post-K3-turns-off-tp7580359.html Sent from the Elecraft mailing list archive at 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 __ 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] kinda like other post K3 turns off.
Gerald, What kind of antennas and feedlines (coax?) do you have? Does this happen on all bands the same way? What modes are you using? It does sound like RF feedback. If you can't easily move the feedlines and antennas away from the rig, I would start filtering all the power leads and other wires going into the K3 using #77 or #43 ferrite cores (maybe 8 or 10 turns). Also, check your grounding. Do you have a single point ground? Is everything well connected to it? 73 Martin AA6E On 11/02/2013 12:15 AM, KC6CNN wrote: I just read a message about a K3 that had turned off and he could not get it to turn back on. I have kinda the same issue but different. I have my K3 connected to a Alpha 76pa amp. I operated it for several months, then all a sudden I would transmit and the K3 would turn off. It would not turn back on until the power supply was turned off and then back on. I checked the Astron 35amp power supply and it is not crow baring The voltage remains good and the SWR are fine. I changed coax cables, and even changed antennas. The problem still keeps happening. I changed power supplies and it still does it. I lowered the drive power on the K3 to 10 watts and tuned the Alpha. I was able to up the drive till the power was around 300 watts. At 300 watts the K3 turned off again. This is repeatable and always turns off around 300 watts. I took the amp to a friend and it performed great. I hooked my station up again and took the antenna off and ran it into a dummy load and it performed flawlessly. I even had the dummy load sitting on the floor between the amp and K3 and it had no issues. I have checked and do not get shocked or bitten by anything in the shack. I hooked it back up and it still turns off. I am thinking that I might have a rf feed back problem, but thought that it would have shown itself when the dummy load was sitting close to the K3 at full legal power. Has anyone had any experiences like this or any suggestions to help me out. Thank you Gerald - KC6CNN - Gerald K2 # 5486 K3 # 6254 KX3 # 757 -- View this message in context: http://elecraft.365791.n2.nabble.com/kinda-like-other-post-K3-turns-off-tp7580359.html Sent from the Elecraft mailing list archive at 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 __ 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] kinda like other post K3 turns off.
The two antennas are a zs6bkw and a OCF dipole. Both are up about 32 feet and the ends are 12 foot off the ground. The coax is LMR400 and is new. The antennas are located on the opposite side of the house from the shack. The amp is powered by a 240 volt plug and the power supply is 110 volt. This happens in all modes, CW, Voice, Psk31. It happens on all bands. It only happens when the power is increased to 300 watts or higher. My station ran great for several months 6 to 12 months. Then all of a sudden this problem showed up. I will start filtering everything tomorrow to see if that helps. Thanks for the replies I will try your suggestions Gerald - KC6CNN - Gerald K2 # 5486 K3 # 6254 KX3 # 757 -- View this message in context: http://elecraft.365791.n2.nabble.com/kinda-like-other-post-K3-turns-off-tp7580359p7580362.html Sent from the Elecraft mailing list archive at 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
Re: [Elecraft] kinda like other post K3 turns off.
ZS6BKW and OCF antennas are notorious for RF feedback. What construction method is in use for the OCF Balun I wonder. I use a dula core Balun Designs unit and still at times there is a small amount of RF feedback seen. I used a ZS6BKW for several weeks and RF was always problematical. Gary On 2 November 2013 14:47, KC6CNN kc6...@gmail.com wrote: The two antennas are a zs6bkw and a OCF dipole. Both are up about 32 feet and the ends are 12 foot off the ground. The coax is LMR400 and is new. The antennas are located on the opposite side of the house from the shack. The amp is powered by a 240 volt plug and the power supply is 110 volt. This happens in all modes, CW, Voice, Psk31. It happens on all bands. It only happens when the power is increased to 300 watts or higher. My station ran great for several months 6 to 12 months. Then all of a sudden this problem showed up. I will start filtering everything tomorrow to see if that helps. Thanks for the replies I will try your suggestions Gerald - KC6CNN - Gerald K2 # 5486 K3 # 6254 KX3 # 757 -- View this message in context: http://elecraft.365791.n2.nabble.com/kinda-like-other-post-K3-turns-off-tp7580359p7580362.html Sent from the Elecraft mailing list archive at 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 -- *Gary - VK1ZZ Skype: Gary.VK1ZZ http://www.qsl.net/vk1zz Motorhome Portable* *Grumpy's House* *Elecraft K3 KPA500FT KAT500FT** * __ 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] kinda like other post K3 turns off.
Hello Gary Good to hear from you. Hope all is well down under. The OCF Dipole uses a DX Engineering 4 to 1 Balun. I had not heard that the zs6 had feedback problems. I better google it before I buy a new one. I have been looking for a good multi band antenna that does not require a tuner until I can save up and get the KPA500 and KAT500. I about come to the decision that 500 watts is all I need. - KC6CNN - Gerald K2 # 5486 K3 # 6254 KX3 # 757 -- View this message in context: http://elecraft.365791.n2.nabble.com/kinda-like-other-post-K3-turns-off-tp7580359p7580364.html Sent from the Elecraft mailing list archive at 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
