Hello all, Just took some voltage readings. Q 22 base 1.894 emitter 1.168 collector 10.88 Z6 mixer 0 volts on all 4 pins.. it that correct??? Q21 base and emitter 0 volts collector 11.78 ( PRE amp is not on) D7 and D6 junction 7.24 D6 anode 7.87 Can anyone make sense of this.. Do I have a bad mixer? Since the freq looks incorrect also.
Jerry Below is my older post. ***************************************************************************** New problem is on the IF amp alignment page 64 in manual. I get just very little hiss with headphones with the AF gain to max and can't even hear the internaly - generated signal I even hooked up an antenna and could not hear any signals. I tried tweaking L1 and L2 to no avail... I was afraid to tweak them to much. I then tried hooking up the headphone output to the computer mic in ( no display at all on line in) using Spectorgram and had noise displayed but no trace of a signal , by the way the mic gain was in the middle. Then i tried tweaking L1 and L2 but could see no change. Should I be able to see the internally generated signal with spectrogram? Every adjusment on pages 60 to 63 went ok. Just got my XG! test occilator today and put it together tonite and did a little troubleshooting. I have the K2 set for 7040 Khz and the XG1 on 50uv and i am getting at the W2 jumper a 42 mv p-p 11955khz signal (using a scope and the internal freq counter). There is nothing at the W3 jumper, not getting thur the crystal filter. BUT, should not that be a 4.9136 IF signal? I get the same freq signal at the collector of Q22, the post-mixer amp *************************************************************************************************************************************************** jerry [EMAIL PROTECTED] 2004-10-28 _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
