Hi Don - Many thanks for your help! L25 and L26 look totally clean so I'm not going to mess with them for the moment. I'll look into testing K12, though I probably won't get to it until tomorrow. Can you clarify what I should do to set up this test?
1. Tune the K2 to 40m 2. Power off 3. Check for continuity between pins 7-8 and 3-4 on K12. Are you saying I need to lift one of the leads on T4 before doing this test, or is that just a caution in the event that I see other anomalies? -- [email protected] (Owen B. Mehegan) 'I learned this, at least, by my experiment; that if one advances confidently in the direction of his dreams, and endeavors to live the life which he has imagined, he will meet with a success unexpected in common hours.' --Henry David Thoreau On Nov 7, 2010, at 10:52 AM, Don Wilhelm wrote: > Owen, > > Armed with that further information, I suspect the relay contacts. > Examine the inductors anyway to see if there is any evidence of > charred turns, if so, re-wind them. > > You can check the relay contacts of K12 with an ohmmeter. If you > set the K2 to 40 meters, Relay K12 should be in the position > opposite that shown on the schematic. That means continuity between > pins 7 and 8, and 3 and 4 - be aware that at DC, the entire low > pass filter will measure as a short to ground unless you lift lead # > 3 or #4 from T4. Many have drawn false conclusions because of this > DC path to ground. > > On 11/7/2010 1:37 PM, Owen B. Mehegan wrote: >> I just tried the test for the inductors. With no antenna attached, I >> read 1.7k ohms from antenna center conductor to ground (tuned 40 >> meters, then powered off). I am able to read continuity across L25 >> and >> L26 though... >> >> I think I can borrow a Fluke meter from a friend which can test >> capacitors, so I'll try to do that. >> > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
