Hi, Very recently there was the same question asked about the K1. I don't recall any mention of this topic on the K3 on the reflector. It has internal trimmers on the per ham band HF filter. Is it advisable to occasionally touch these up? I have no reason to believe that my oldest K3 (ser#82) is out of alignment, but I'd like to be ahead of the game. I am old enough to have used tube rigs in my early ham career and they definitely needed occasional tune up. The narrow band ham band RF filters in the K3 have relatively high Q so the slightest component drift will quickly affect the shape of the filter curve.
If the answer is affirmative, could we get a procedure for doing it properly? Tuning for max signal at the center frequency may not produce the proper shape of the bandpass filter (flat top for the required bandwidth). I know from my previous career as an RF engineer that tuning LC bandpass filters can be tricky. AB2TC - Knut -- Sent from: http://elecraft.365791.n2.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
