Vin, My audio pot exhibits the same effect as yours, most of the gain happens in the last 30 degrees of control motion. I do not get a "pop" at the end.
If your signals are effected by the RF Gain control I would start searching for the problem at the front end with L1 and L2, also checking that J2 antenna jack isn't shorted and you have put the jumper wire into J7, jumping pin 1 to pin 2 properly. You should be able to place an ohm meter between the center pin of the antenna jack to schematic point B, left edge of schematic near trimmer capacitor CA. This path should offer low DC resistance independent of whether the KX1 is switched on or off. If your RF Gain does nothing to the signals then we need to start elsewhere... Mike Scott AE6WA Tarzana, CA (near LA) Elecraft KX1 4-Watts -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Vin Cortina Sent: Thursday, July 06, 2006 11:06 AM To: [email protected] Subject: [Elecraft] KX1 Recvr nearly deaf (Was KX1 receiver alignment) Hi folks, I have resolved the "signals getting loud when I touch the board" mystery with help, but there is still something amiss. Upon further testing, the receiver appears to be profoundly deaf. It does hear some signals on 40, and even some on 20, but not nearly as well as it should. However, I have some clues here. Attaching the antenna does affect the signal level, so the receiver is, to some degree at least, seeing the antenna. Also, the receiver is detecting signals and is on frequency. It hears my signal source OK, and even the few strong external signals are perceptible, but again not nearly as strong as on other receivers here. Another point of note, the background hiss really doesn't sound like what I would expect. No static crashes, not the background noise I would expect. Just a dull hiss like you would hear when raising the volume on a PA system with no input. Another point, although seemingly unrelated, is the AF gain control gives me basically no audio until I get to about 3 o'clock. Then it gets loud very quickly. (This could be a combination of not very sensitive headphones and the audio taper characteristics of the pot, if in fact it is an audio taper.). And then just before it hits maximum clockwise position, I hear a slight "pop" and it gets noticeably louder. I do realize that I probably need more sensitive headphones/ear buds, but this would not explain all of these symptoms. Obviously, I am far more concerned with the first problem. I am trying to decipher the receiver path right now, but would appreciate any help. Thank you! Vin Cortina KR2F K1-4 s/n:1977 KX1 s/n:1476 _______________________________________________ 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 _______________________________________________ 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
