Topband: Moon and the Ionosphere : YO3FFF

[cris blak]

Hello Tom,

Tom Rauch <w8ji at contesting.com> wrote: How could we record the signal level, anyone know

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.


For the "noise theory", please refer to my previous e-mail.

73 de YO3FFF
Cristi

 
---------------------------------
 Get your own web address.
 Have a HUGE year through Yahoo! Small Business.