I have my K2 built to the second alignment step. It passed all the tests
on the first part of the build on initial power up. My K2 is not hearing
the 7.0000 birdie. I am not hearing anything on 40 meters from receive
signals with an outside antenna connected or my broad band generator
connected to the antenna connector. The PLL linearization worked fine
with no errors and the end message showed up when it was finished.
I do hear the signal at J15 C6 on the left side as viewed looking down
from the top of my K2. I get a small signal increase when I inject my
broadband signal generator to the top of the case of Q21. I get an
increase in signal on pins 3 and 4 of the K1 relay. No increase on any
other pins when the 40 meter band is selected. I get a signal increase
at jumper W5 and W2. I get a small increase at W1. I get a small
increase on both sides of D6 diode. I get an increase at the case of
Q22. I have tripled checked component orientation and values, cold
solder joints.
I am able to get the pre amp and attenuator to work when I inject the
signal at W5. I am able to get all the freq readings on the BFO and
filters adjust fine. The cans for L1 and L2 have the big slots no marks.
I had to adjust them bottomed out and then got a slight signal increase.
It is almost as if the cans a for L1 and L2 are not the proper value. I
was only able to get 5.5 volts out of L30 with the slug all the to the
bottom. All of the VCO voltages came out with in specs. 1.887 volts
being the lowest on 40 meters at 7.0000 L25 and L26 are wound correctly
and have good continuity between the pads.
Where should I start looking for a problem ?
Thanks,
Glenn WA7SPY
_______________________________________________
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
