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Confirmed busted with ONE WATT

> Actually, one watt is above the legal limit for Part 15,
> which is a maximum of 50 milliwatts on FM.
__________

Part 15 doesn't state a maximum power for FM. It only states that the field strength 3 meters away from a Part 15 FM transmit antenna cannot exceed 250 uV/m in any direction.

The technical reality is that 50 milliwatts of FM power radiated by even a very short 'whip' type radiator produces a field strength far, far above the Part 15 limit. Even 50 microwatts is still too much.

This recent post on the Board gives more information:

http://www.radio-info.com/mods/board?Post=562369&Board=community
 
> I ain't Keith, but I am a engineer-type who's installed one
> of his units.
>
> The FCC doesn't like obvious attempts to turn a long ground
> wire into a radiator. You get 3m for the antenna and ground
> wire COMBINED. It's legal and good engineering practice to
> mount the transmitter/antenna as high as possible, and to
> ground the unit to the support structure using a short
> jumper.
_________

The original post was about a Part 15 FM operation, which has no restrictions on the length of the antenna or "ground wire," or the power of the tx -- only on the allowable field strength (250 uV/m max measured 3 meters from the transmit antenna).

It seems that this thread got de-railed into comments based on the Rules for Part 15 AM.
 
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