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R. Fry / Carrier Current

B

billding

Few people mention what used to be known as the "carrier current" method when trying to get a "legally unlicensed" signal out. Is there a reason for this? I set up temporary event parking stations several times a year on AM and have great success doing so. The usable signal can only be heard within a small distance from the phone pole/ electrical wires, but can carry for more than a mile down the line. Did the rules change? If so, what are the new rules regarding "carrier current" transmission?
 
The signal strength allowed for "carrier current" is so low that in most cases it can't even be measured with a standard field intensity meter.

The rule is in Section 15.221. Go to www.fcc.gov , click on "Transition" at the upper right of the home page, and then click on "Rules and Regulations" along the left margin, which leads you to the Government Printing Office website. Find Part 15, and then Section 15.221.
 
The question was addressed to him because he is the one who knows. What I wonder is why he hasn't responded, complete with NEC analysis. It's time to check the hospitals at Quincy.
 
What I wonder is why he hasn't responded,

By the time I noticed this thread, the answer already had been posted.
 
AC line filtering in the newest AC operated radios is so poor that it would be unlikley for anyone other than
drivers to hear a carrier current AM without major hum issues.
 
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