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Old June 29th 16, 05:19 PM posted to rec.radio.amateur.antenna
Jeff Liebermann[_2_] Jeff Liebermann[_2_] is offline
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Default Scope of the term "Amateur"

On Wed, 29 Jun 2016 11:29:12 -0400, rickman wrote:

Mostly yet.


That should be "yes". In a hurry today (like all other days).

However, some bands do not require a license and operate
under FCC Part 15:
http://www.lwca.org
https://en.wikipedia.org/wiki/LowFER
http://www.arrl.org/lf-low-frequency
https://hackaday.io/project/6882-lowfer-transmitter-for-your-arduino
etc...


Very interesting. I see a difference between the ARRL article and the
Hackaday page. ARRL says the power limit on the US 1750 meter "free
band" is 1 W into the "transmitter's final stage" while the Hackaday
page says the limit is 1 W into the "feedline" and antenna system.


This might help:
http://www.lwca.org/sitepage/part15/index-what.htm
http://lwca.org/library/reference/
Note that it's a bit out of date. Adjust the links for 2016.
You want part 15.217 (Operation in the band 160-190 kHz.)
http://www.ka7oei.com/ct_lowfer_archive.html

I see that kind of stuff quite a bit in the FCC rules-n-regs. They
sometimes fail to specify WHERE the transmit power is to be measured.
Is it at the input to the xmitter, output of the xmitter or at the end
of a lossy feed line. What does one do if the system is not 50 ohms?
I don't have an answer and since the FCC never will admit to making a
mistake, it's unlikely to be fixed. Should you ask for clarification,
you'll probably get an answer from the FCC which you don't want to
hear. Been there, many times. My best advice is do your best with
what you have, don't try to play FCC attorney, and muddle onward into
the unknown.

Gone...

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Jeff Liebermann
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