Actually, I thought the point that NQ4U was trying to make is that much of the
time when there's an issue with Winlink QRM in North America, it's likely
because an actual human simply clicked "connect", perhaps disregarding warnings
about the frequency being occupied, and without listening an appropriate length
of time to see if the frequency is in use.
This doesn't, of course, alleviate the need for effective
listen-before-transmit on the automated station's side...but it should
partially deflate the concerns about Winlink nodes connecting amongst
themselves in a fully automated manner, at least within areas under the FCC's
jurisdiction. This also doesn't alleviate the need for Airmail users to
exercise extra care, using their ears since Airmail lacks RMS Express' spectrum
display. And, this doesn't excuse the occasional Winlink sysop who sets up
their node either outside the automated subbands, or with more than 500Hz
badwidth configured.
--
Michael Adams | N1EN | mda@n1en.org
-----Original Message-----
N5UWY wrote:
On Tue, Apr 22, 2014 at 4:40 PM, <nq4u@mtars.org> wrote:
> One of the things that folks need to remember about using the WINLINK
> system in the U.S. is that an operator (the end user) must initiate
> the contact to the RMS. It is legal for operators in some other
> countries to use the automated forward system on Amateur frequencies
> but not in the U.S. The RMS that is either listening on a single
> frequency or scanning five frequencies DOES NOT initiate the contact at least
> in the U.S amateur bands.
Which rule do you claim these hosts meet?
Either mailhosts are an "automatically controlled digital station"
under 97.221, and hence are limited in bandwidth and by band plan, or they are
being remotely controlled by stations under 97.213's telecommand provisions, in
which case they can only be controlled by wireline or auxiliary station and the
stations remotely controlling the mailhosts never meet the definition of an
auxiliary station.
Which is it?
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