Steve, I just cannot unserstand how the KPA500 can create birdies during periods of receive. I would you suggest that you look for other potential problem sources such as loose PL-259 connectors.
73, Don W3FPR n 1/28/2012 8:44 PM, Stuart Dunk wrote: > G'day all. > I have a KPA 500 Sn 423 and have discovered birdies every 10khz or so on 20 > thru 6m, worst on 10m indicating about 1 s point on the ft1000 mk v field. > I have checked for external sources, earth loops, wall warts etc. > The noise is present when there is something plugged into the output of the > amp, I use the term something plugged into the output because no matter what > , antenna or coax patch cable or dummy load as soon as it is connected to the > amp output the noise starts. > > I have made up a sniffer antenna to hook up to the output to check various > positions in the shack but the intensity of the noise will not change. > I have checked all the internal connections in the amp all the screws are > tight and dimming the LCD makes no difference. > Has any one come across this in their amp if so did you find a fix. > > Regards > Stu > VK4SDD ______________________________________________________________ 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
