[Drake] R-7 mixer test

[N8KDV]

At 11:42 PM 4/29/05 +0200, you wrote:
>On 04/29/2005 11:21 PM, Bob Camp wrote:
>> When you tune the radio to zero frequency the local oscillator comes 
>> right through the mixer and into the first IF. The mixer isolation is 
>> roughly 30 db and the LO is around +7 dbm or so. This gives you 
>> something in the -20 dbm range as a "test" signal. As I recall it 
>> pretty much pegs the S meter.
>
>The R7 S-meter goes to S9+80 dB so it will not peg it. Just tested mine,
>and it came quite close to S9+50 dB, which I think is quite right (if
>you do the math you get +7 -30 - -73 (S9-signal) = 50 dB over S9.)
>
>Also tested my TR7 and with that I got S9+30 dB. Think I have to check
>the S-meter...
>
>73 de Lars, sm6rpz

Just tested my R7 and I get about S9 +35 dB

Steve
Holland, MI
USA