Topband: One Way Propagation.

[Richard (Rick) Karlquist]

On 1/16/2021 3:20 PM, Roger Kennedy wrote:
> 
> If you have an efficient transmitting antenna, and an accurately calibrated
> S Meter, I have found over the decades that most signal reports are pretty
> Reciprocal.
> 

> 73 Roger G3YRO
> 

Even if:

1.  Propagation were always reciprocal.

and

2.  Everyone had a calibrated S meter

and

3.  Everyone used a single antenna for RX
and TX

and

4.  Everyone had the same noise level in their
environment.

There would still be no guarantee that equal S meter
readings would correspond to equal S/N ratios.
For example, you transmit and receive on a dipole, which is
generally better on RX.  If the station at the
other end is (like me) transmitting and receiving
on a vertical, that will make me seem to be an
alligator.

Of course, conditions 1 through 4 are by no means
assured in the first place.

YMMV.

73
Rick N6RK