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Author Topic: Signal Strength/Distance Question for Part 15 AM  (Read 1567 times)
Timewarp
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« Reply #30 on: September 08, 2008, 03:20:28 PM »

Wouldn't it be a shame or a big laugh to see one busted as the most podunk pirate in radio history!!!!!!!!!

FCC agent "Hey!  You've got 2/100ths of a watt ERP.  That's double the part 15 limit.  What's a
grown man with your experience doing this for anyway."
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Neil E.
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Part 15 AM since 1959, Ham Radio


« Reply #31 on: September 08, 2008, 03:43:32 PM »

Wouldn't it be a shame or a big laugh to see one busted as the most podunk pirate in radio history!!!!!!!!!

FCC agent "Hey!  You've got 2/100ths of a watt ERP.  That's double the part 15 limit.  What's a
grown man with your experience doing this for anyway."

Yep.  That's the situation as I see it regarding credentials as a valid excuse to bend rules.  It's called hubris.

Neil
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R. Fry
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RF Systems Engineer (retired)


« Reply #32 on: September 08, 2008, 06:01:36 PM »

FCC agent "Hey!  You've got 2/100ths of a watt ERP.  That's double the part 15 limit.

Details at first may not be important to some, but ignoring or misunderstanding them still may result in FCC action.

Note that a Part 15 AM transmitter / antenna system that is compliant under either 15.209 or 15.219 in the upper part of the AM broadcast band can produce an ERP not greater than ~50 nanowatts (0.000 000 050 watts).

The "2/100ths of a watt ERP" stated in the quote above is ~400,000 times greater than the maximum legal ERP to meet 15.209 or 15.219, which is far from "double" that ERP value.

Even 1/1000 of a watt of ERP is still excessive for legal Part 15 AM ( ~20,000 times greater ERP than complies with the realities of 15.209 / 15.219).

 //
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Neil E.
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Part 15 AM since 1959, Ham Radio


« Reply #33 on: September 08, 2008, 06:05:45 PM »


The "2/100ths of a watt ERP" stated in the quote above is ~400,000 times greater than the maximum legal ERP to meet 15.209 or 15.219, which is far from "double" that ERP value.

Even 1/1000 of a watt of ERP is still excessive for legal Part 15 AM ( ~20,000 times greater ERP than complies with the realities of 15.209 / 15.219).

 //

Once again Mr. Fry is correct.  He He Heeeee.

Neil
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Timewarp
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« Reply #34 on: September 09, 2008, 09:18:58 AM »

Yes!!!!!!!  But the joke is not on me because the FCC licensed transmitters that I am babysitting
right now put out thousands of watts.  Mr Fry's expertise in this matter only made my point even
more clear.

Have fun with your toys big boys! 
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Neil E.
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Part 15 AM since 1959, Ham Radio


« Reply #35 on: September 09, 2008, 02:30:41 PM »

Timewarp,

I certainly was not trying to make anyone the butt of a joke.  As I try to understand your last post I must ask what happens if your babysitting activities for the transmitters putting out thousands of watts allows them to exceed the authorized power or they have distorted patterns?

Could not the same happen to us using peanut whistles and toys?

Just asking, not joking.

Neil
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