I noticed that my BIT40v3 was well shy of the top of the band.
On the spectrum analyzer, I noticed two other peaks about 18KHz
on each side. They seem to be a bit higher than I'd expect,
but I'm a relative newbie on what's allowable.
I have a snapshot of the spectrum at:
First, is there a problem with my board or is that within limits?
I remember when I was setting up an SDR other signals were down by
47 or 48 dBm.
Second, does this mean I should adjust the trimmer to move the max
operating frequency to 7.3 MHz minus about 20 KHz?
I few minutes later I noticed that the other signals had pushed out about
6.5 KHz more:
The only change I've made to the RF side of things is replacing the resistors
to reduce drift.
- John
W1JDS
