[BC] Frequency Measuring

[DHultsman5@aol.com]

In a message dated 3/20/2007 2:46:01 PM Central Daylight Time, 
tonne at comcast.net writes:


> When the station went off the air at 
> midnight he would call and we would put the transmitter back 
> on with the one thousand watt nondirectional signal with a 
> one thousand cycle tone and he'd give the frequency measurement.
> 
> How in the world did he do this?

By measuring the sidebands.  They are completely in the clear with
no competition at all.

- JimT

**********************************************
 
I used to have a couple of Local stations that had their frequencies measured 
on the first Sunday Morning of the month at like 12:05 to 12:10 AM at which 
time you would switch to 1 kW and put a telephone dial tone on at 100% 
modulation.    The old gentleman had several stations that he measured that way I 
would tune around on sunday night and hear them.  My question would how would he 
know that he was actually measuring that station if he could also hear the 
heterodynes and programming from other stations?
 
Oh well as long as we got the card and calibrated the monitor once over 30 
days.
 
Dave



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