Is WSRO-AM 650 Testing Its Modest Power Increase?
Mon Jun 16 07:36:16 EDT 2014
On Sun, 15 Jun 2014, Scott Fybush wrote:
> On 6/14/2014 4:05 PM, Paul B. Walker, Jr. wrote:
>> Part 15 is 100 MILLIWATTS.. 1/10th of 1 watt.
> This is a common misconception, and trotted out with certainty by lots of
> people who like to sound like they know what they're talking about.
> It's also wrong.
That depends on which frequency band we're discussing. From 160 to 190
KHz, for instance, one may use up to 1 watt and an antenna as long as 15
meters (CFR 15.217); and in the band 510 - 1705 KHz, which includes the AM
broadcast band, the limit is indeed 100 milliwatts (CFR 15.219), but the
combination of antenna, transmission line, and ground lead are limited to
Amateurs have tried CW in the 160 - 190 Khz band with some success, but I
suspect AM wouldn't do very well down there.
I wonder if anyone's tried Digital Radio Mondiale in that band. Designing
a short antenna with sufficient bandwidth would be a challenge, I suspect.
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