Hi all, Here's an interesting finding, though I apologize if this is already in the past archives.
No matter how careful you are when installing L33 on the bottom of the board, it's so close to the bottom cover that any movement of it, say when you're picking up the rig or manipulating the bale, etc., will pull the BFO. On my 2nd K2 that I just completed it was so bad that I could pick up the rig, set it back down and the tone of signals was very slightly, but noticeably off. So what I did was put a lockwasher between the cover and the standoff near L33 to raise the cover a little bit and get it the heck away from L33 as much as I could. It actually made a large improvement in the general frequency stability of the rig - which means before I was seeing more contributions in overall drift from the BFO in addition to the rest of the circuitry. The washer is an ugly fix, since the cover bows out a little bit, but it's totally non-destructive and reversible. I did the same fix to my other K2 which didn't have the problem to the same degree, but it helped on that one too. Fortunately the slightly bowed out bottom cover is under the rig and you never see it. But just in case you've been experiencing more drift in your K2 than you think you should get, or it pulls when you pick it up.... that's a fix that is working on mine. 73, LS W5QD -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-freq-stability-tp7616601.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
