Since I have never operated on 60m ever... You figure it out Jack W4GRJ On Nov 11, 2015, at 3:33 PM, Jim Brown-10 [via Elecraft] <ml-node+s365791n7610243...@n2.nabble.com> wrote:
On Wed,11/11/2015 12:10 PM, W4GRJ wrote: > Got the KPA500 back from Elecraft. > Problem found: L22 and other components in the 60M low pass filter circuit > burnt through the LPF PCB. 60M LPF??? Last I looked, the US power limit on 60M is 100W relative to a half wave dipole. > Repair $650 later: Replaced low pass filter module and installed QSK mod. > > On the phone I asked what caused the failure, answer was no idea other than > component failure. I understand stuff fails but I thought I would get more > than 2 years before a major expensive failure. The LPF is on the output of the amplifier. One possible cause of failure could be lightning. > Previously had a Ameritron ALS-600 for 5+ years never a problem, sold it to > purchase the KPA500. > > Sometimes the grass is not greener. My only experience with an ALS-600 was at a contest station in PJ4 several years ago. I found it to be a really inferior amp - most of the time, I was lucky to get 300W out if it. No comparison to a KPA500. 73, Jim K9YC ______________________________________________________________ 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] If you reply to this email, your message will be added to the discussion below: http://elecraft.365791.n2.nabble.com/KPA500-troubles-tp7609284p7610243.html To unsubscribe from KPA500 troubles, click here. NAML -- View this message in context: http://elecraft.365791.n2.nabble.com/KPA500-troubles-tp7609284p7610259.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 Message delivered to arch...@mail-archive.com
