[BC] Power Side

Barry Mishkind barry at oldradio.com
Wed Feb 25 01:57:57 CST 2009


>From: jmjpcc at bellsouth.net
>... a station becomes more "listenable" with Power-Side in the 
>chain.  I believe it is that with symmetrical sidebands there can be 
>sideband cancellation as a result of scatter and re-radiation. 
>Because Power-Side produces asymmetrical sidebands, there cannot be 
>as much cancellation.  I was involved with the installation of 
>Power-Side at four stations, and saw the same results each time. One 
>DA-2 station with had a very deep nighttime null (.15 mV/m at a 
>point three miles from the 50KW transmitter).  Driving to the point, 
>I could always tell the point was "in" by the fact that the station 
>became unintelligible on the car radio.  After the installation of 
>Power-Side, approaching the point made the radio a little more 
>noisy, but fully listenable, and the point was still .15 mV/m.

         This is a very interesting point!

         I hadn't thought of that aspect. (Of course,
         having the experience you have had that
         many others have not gives you a better
         vantage point.)

         I would imagine that the station got a couple of
         further miles out of the null that was previously
         useless.

          




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