Topband: Moon and the Ionosphere : YO3FFF

[Tom Rauch]

> As I described in a previous e-mail, one can use a known 
> signal generator trough a coupler mixing it with the 
> beacon's signal from the antenna. Together with a 1Hz 
> filter for each carrier one can have a good approximation 
> of the measured signal (of the beacon). The signal coming 
> from the demodulator will be measured with a voltmeter or 
> by PC's soundblaster. All stages should work linearly 
> without any compression.


Actually I'm looking for the specific tool, not so much a 
general idea.

I would like to know because I have been thinking a long 
time about comparing the signal level on three antennas, 
dipole at 300ft, a dipole at 130 feet, and a vertical.

I thought about an attended high power beacon on 1999kHz 
with Internet reporting system, but perhaps it would work to 
use a receiver and record the signal levels from distant 
transmitters.

73 Tom