22 Nov
2008
22 Nov
'08
10:14 p.m.
You should also see a difference in received signal strength too.
Swing your VFO either side of the frequency, listen, you will hear a difference, and watch your S meter.
Even without a mast head pre-amp you will see and hear a difference.
An indicator on a suitable TNC would be the receive DCD LED.
73, Dave.