Thank you Jim - I'll also post this to the group as well just to keep them informed about where I'm at with testing. IF I can't get this thing aligned completely, I may have to resort to bothering you with it "next year" when I get back to Mobile.
I did the following tests and re-checked the transmitter offset adjustment again. That didn't seem to change much of anything. As the two tones came together, there was kind of a "waver" in the sound. when I continued to move past that point, the waver would disappear, then appear again. I then moved the adjustment between those two points. Is that correct? > a problem with the 30 Meter HetrodyeOscillator Crystal. It sounds like it > is not oscillating. If you have a general coverage receiver you can tune to > the freq of the crystal and see you can hear it. I tuned my 756Pro with CW filter set to 100hz with a coax jumper connected to the antenna SO-239. With the K1-4 just turned on, no antenna connected and in receive mode with other end of coax held close to J6, pin #4 I get: 40 meter band = 15,003.96Mhz with a nice tone (15.00 Crystal?) 30 meter band = 18,097.78 Mhz with a nice tone (18.100 Crystal?) 20 meter band = 21.996.83Mhz with a nice tone (22.00 Crystal?) 40 meter band = 26,046.64Mhz with a nice tone (26.05 Crystal?) The 30 meter signal was as strong as the other bands, but I am surprised at the offset from the stated filter freq. OR is this normal and why we must do the Freq offset calibration for each band? Now when I transmit with the K1-4 into a dummy load (an old Health Cantenna) and tune in the signal on the 756Pro, I get the following: K1 transmits at 7040.0 = 756Pro receives at 7040.67 (K1 receives same freq 756Pro transmits) K1 transmits at 10,130.0 = 756Pro receives at 10,130.00 (but K1 receives 600 hz off.) K1 transmits at 14,030.0 = 756Pro receives at 14,030.63 (K1 receives same freq 756Pro transmits) K1 transmits at 18,090.0 = 756Pro receives at 18,090.62 (K1 receives same freq 756Pro transmits) On 30 meters the K1-4 only transmits in the milliwatt range too small to see on my wattmeter. The K1-4 seems to receive pretty good on 30 meters when connected to outside antenna. A weak signal on the 756Pro is still received on the K1-4, but a bit weaker. It the signal is received on the 756Pro at 10,30.00, the K1-4 will receive it about 10,130.6. It really seems like the K1-4 is receiving ok on 30 meters, just no power output. I also re-melted solder on all the L1-L2-L3 inductor wires and the capacitors around it. I counted the number of turns on each of the inductors to be sure it was correct and checked the spacing around the torrid core. Thank you for the help, Ken _______________________________________________ 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
