[BC] processing way back when= GE PEAK LIMITERS

DHultsman5@aol.com DHultsman5
Wed Dec 20 06:13:42 CST 2006


 
In a message dated 12/20/2006 12:32:04 AM Central Standard Time,  
peterh5322 at rattlebrain.com writes:

>  IIRC, the audio was modulated as RF to permit gain control in
> the RF  domain without thumps.

GE's limiter worked this way.

Audio  modulated an RF carrier, limiting in the RF, RF demodulated back to 
audio,  which was then sent to the Tx.

Not very  successful.




****************************************
 
Peter:
 
I beg to differ with your statement.  I worked at a station that had  the 
earlier GE- BA5  and the later BA-6 Peak limiter.
 
The unit had a vewry fast attack time and could run about with some regular  
limiting for compression.  We used the BA-6 at two stations I worked  with.
 
As far as competetive loudness it was the best of the tube type peak  
limiters  (Gates SA-39, RCA BA-6,  WE- 1126) until the solid  state CBS Volumax 400 
came into existance.  Just my opinion.
 
Replacing the tubes and working on one was a "B..ch".  I worked  on both of 
the ones I used and found a GE service guy in Dallas, named Dick  Tulius and he 
was the best at tuning them up.
 
Anyone else have experience with the GE  BA-6's  with the RF  delay line?????
 
One of the anomolies was the RF generator, when out of wack,  would  place 
the station at two places on the dial with the old Western Electric  
transmitter.  I know this couldn't happen and there had to be soemthing  wrong with the 
transmitter  but the spur was in the audio output. I  traced it to the limiter 
and it went away after repairs.
 
Dave 


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