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Question about FM power output.

 
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Last Post by Anonymous 19 years ago
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 freestyle899
(@freestyle899)
Posts: 3
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O.k. relatively new to part 15 microbroadcasting. I purchased a unikit FM stereo transmitter. It's advertised output is rated at 25mw. What percentage or fraction of 1 full watt is this? In my uneducated mind, I want to think it's 1/4 of one watt. But, it's not that simple obviously. Or, is it? But, something tells me that would be too much power for part 15 broadcasting.

Mike


 
Posted : 21/04/2007 6:30 am
 Anonymous
(@Anonymous)
Posts: 0
 

Am I correct in assuming 25 millionths of one watt?


 
Posted : 21/04/2007 6:41 am
 Anonymous
(@Anonymous)
Posts: 0
 

A power of 25 milliwatts is 25/1,000ths of a watt.

It takes thousands of times LESS power than that to generate a compliant Part 15 FM field (250 microvolts/meter measured 3 meters from the transmit antenna), so you'll have to keep that in mind.
//


 
Posted : 21/04/2007 6:47 am
 Anonymous
(@Anonymous)
Posts: 0
 

Thanks for the quick response and patience for my lack of knowledge!
Mike


 
Posted : 21/04/2007 7:09 am
 Anonymous
(@Anonymous)
Posts: 0
 

check this post http://part15.us/node/1331
A lot of good info for the FM side of things.

Regards,Lee
http://www.freewebs.com/wilcomlabs/index.htm


 
Posted : 21/04/2007 8:40 pm
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