Joe,
It might help if you described the noise. Is it a
broadband hiss, some sort of squeal, etc?
I no longer have my K1 but I seem to recall there
can be some hiss in the audio.
And how does it sound with an antenna connected?
It could be that the noise you are hearing is
drowned out by band noise and signals, and so is
of no real consequence.
73, Phil W7OX
On 3/16/15 2:37 AM, KH7AX wrote:
Just finished my new K-1 build and seem to be having way too much noise on
receive.
I used my TS-590s into a dummy load at it's minimum output of 5w on one side
of the room and the K-1 into another dummy load on the other for signal
generation and freq alignment (the 590 has a freq stabilizer installed).
All the alignments went well and the K-1 fine tuned with full output power
on both boards. I have (40/20) installed now and a (30/17).
However, the noise levels with and without an antenna connected are
identical. It's more hard of hearing than I am. I've read some previous
posts regarding receiver sense and the possibility of a bad Q10. I was
wondering if the recommendations would be the same in my case. Should I
remove Q10 and see if that does the trick? I was hoping to take the rig on
vacation with me. If the replacement doesn't make it before I leave, would
it be ok to take the rig with me and replace the transistor when I return?
Thanks for the advice. I love this little rig and want it to run well.
Joe, KH7AX. Hawaii County
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