[Elecraft] K1 Alive Sans 20 Meters Followup

[John J. Bahun]

Additional information after reading through the Elecraft Archives.....

Item #1 was a silly operator error - When I finished off the Xmitter section - I accidentally switched the switch on the bottom of the RF board - Dohhh!

Item #2 is still a puzzler.....

I have checked the Xtal - I am getting a nice signal out of it at about 22 MHZ - so I am convinced the crystal is ok.  I statically checked all the relay contacts in 20 meter mode and all seems ok.

I am getting nothing on Rcv and no drive on Xmt - That must be a clue - I guess I need to study the schematics a little more and try and figure out what is unique about 20 meters on the unit.

Any one have any other ideas Please let me know!

Thanks!

JB - WB8UFA / 7



Original Text Below.....


K1 S/N 1883 is alive!

I have the 4 band module built - my RF board is complete and the front panel.

I have gone through the RX alignment and I just finished the Xmitter section and I am getting good peaking on RF output.

I have a couple of problems.....

1.  I am hearing a tone in the headphones all the time - Slightly above the noise floor - The Tuning knob does not change the frequency of the tone- It sounds like about 400-600 Hz (approx by ear).....

2.  My 20 meter band is dead - No Rx or Tx - All other bands are great - I built my board for 40 - 30 - 20 and 15 meters.  I have examined the filter board for obvious items (solder stuff etc.)  I have not done any troubleshooting yet.

Anyone have any ideas on these items?

I am really excited to get it on the air - All the other bands look pretty good - I cannot wait to hook it up to my inverted vee and give it a go but I think I am gonna wait until I get these bugs worked out.

Thanks to all!

73

WB8UFA - JB

John J. Bahun
Senior Software Engineer
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