In a message dated 27/06/05 16:37:10 GMT Daylight Time, [EMAIL PROTECTED] writes:
The only glitch I'm having right now is that I'm getting reports of FM/Chirp, and I can hear this when I transmit into a dummy load, listening on a TS-940. I thought it might be voltage drop under load, but reducing power doesn't change it. I haven't gone through the TX alignment so maybe this is an alignment thing(?). Reply:----------------------------------------------------------------- Hi Paul, Check that RFC15 the 100uH choke that feeds the 5V supply to the PLL chip U4 pin 16 on the RF board is not O/C. Apparently a common cause of this problem as it is very easily damaged during installation. Need to check it with a DVM for a low through resistance as voltage tests can be misleading. Can be temporarily replaced with a wire link until a new choke is obtained if it is faulty. When installing a new choke carefully hold the wires next to the body of the choke with a small pair of needle nose pliers and bend the free end of the wire with your fingers only. This helps to keep mechanical stress off the choke body. Bob, G3VVT _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
