It sounds like you've only put one new board in a 2RX K3. I don't
believe that's a supported configuration...
73, Ross N4RP
On 4/6/2015 7:01 PM, Roger D Johnson wrote:
My new boards arrived today. I popped one into the K3 for some
testing. I was especially interested
in the low frequency performance as I like to DX the LF broadcasts
from 153 to 279 kHz. What I found
was that below 400 kHz, the noise level rises and at 100 kHz it's
almost 20 over 9 on the S meter!
I calibrated my NaP3 spectrum analyzer program and took some
measurements of the noise level.
500 kHz -127 dbm
400 -127
300 -124
200 -113
100 -93
That's a 34 db increase in noise level!! Is this the way the new
boards are supposed to work?
I expected a decrease in sensitivity below 500 kHz but not this. Any
ideas?
73, Roger
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FCC Section 97.313(a) “At all times, an amateur station must use the minimum
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