Re: [Elecraft] K2 1E field day
I picked up K2/100 #4760 on eBay a few weeks before field day - it was built but not properly aligned (only one of the filters worked on CW), so I went through the receiver alignment (Spectrogram was a real help) several times and got the receiver working well. I operated 1E from home, using a fairly big marine battery, running 100 watts on CW. 351 Qs over Sat and Sun, with the K2 left on at all times, and the battery still had plenty of juice. I must say the K2 is certainly efficient ... 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(?). Anyway, I'm loving the K2, and just received the KAT100-1 and KSB2 kits, so at least I'll have built part of it :-) -- Paul Heller W3PH [EMAIL PROTECTED] ___ 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
Re: [Elecraft] K2 1E field day
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
