> Ok, now I hook the spectrum analyzer up to the receiver port,
> and I see
> about -55dBm. 50 watts = +47dBm, minus the 100dB notch =
> -53dBm that is pretty close to what I'm seeing at the rx antenna port.
>
> Question is: Should this good enough for a low band micor receiver?
>
> Thanks,
>
> Tim W5FN
Yes, should be good enough for even 500 kHz split. However, at close tx-rx
offsets, transmitter noise is often more of an issue than carrier
supression, so test your duplexer "backwards" to make sure you have the same
isolation in the other direction.
And don't forget the noise foor on 6m is usually pretty high, so even if you
have a trace of desense on the bench using a dummy load and lossy tee, you
may not even notice it in the field.
--- Jeff WN3A
