[BC] The K- Word ( Power - Side )

[Alan Alsobrook]

Barry Mishkind wrote:
>         Aren't there two reasons for power-side?
>         1. To "move" a station slightly up/down the dial.
>                 this is less useful on digital receivers.
>         2. To better match the sidebands into a DA.
>                 this may still be useful in some cases.

There is also supposed to be a another reason, that is to cut down power 
line interference. What I have been told is that by unbalancing the 
sidebands it causes a cancellation of power line noise in the receiver. 
I don't know why exactly that is nor can I explain it.
I was called in to assist Lenard with a Power Side installation last 
year. He explained quite a bit about how it works and why it works, 
unfortunately my grasp of what he was saying wasn't keeping up with him.

I'm not either pro or con on PowerSide, but listening to some stations 
that have it, doing A-B tests it does make a positive difference. The 
question is is the difference enough to warrant the investment?

It was also interesting to note that with some new AM TX designs coming 
out that the same effect as PowerSide could be now done simply by 
software. Of course that opens a whole new can of worms.

-- 
Alan Alsobrook CSRE AMD CBNT
St. Augustine Fl. 32086 904-829-8885
aalso at Bellsouth.net