[BC] Achieving good S/N

[Dave.Hultsman@mxbackup01.virtbiz.com]

In a message dated 12/24/05 11:50:04 P.M. Central Standard Time, 
shnewman at alaweb.com writes:
Wow, now that I dig deep into my memory banks
it's amazing we had 70db s/n on KSFR in 1962!

Steve

*********************

Steve:

Was this figure with stereo  or mono?  I know about your passive 
console. Studio at transmitter or on phone lines?


I built and installed lots of FM Stereo in the early '60's  and I 
found the two hardest specifications to make were signal to noise 
specs from the microphone input channel, separation on early stereo 
generators (tube type) and crosstalk mainly due to telephone 
lines.   I remember making the left channel at  63 dB down and the 
right channel at 60.5 and I had to select 5879's to make that.

Most of my stuff was tube type.   Later new Modulation monitors, 
solid state consoles and especially the newer second generation solid 
state stereo generators and exciters made most of the stereo 
specifications easier to achieve.

Dave Hultsman