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From: Chuck Dietz
Sent: Thursday, November 30, 2017 12:09 PM
To: Mike Waters ; Tree
Cc: topband
Subject: Re: Topband: FT8 discussion
I know this has been “Discussed Out,” but I just want to ask why the window
is in the 1840 area instead of the 1990 area?
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Topband Reflector
With a 1 minute cycle, where only 46 seconds of it is payload, like in JT65
and JT9, a CW id is possible, and indeed available, to those that want to
activate it.
Not feasible with a 15 seconds cycle where 13 seconds is payload. If CW id
becomes mandatory, it may be the end of FT8, to the delight
I agree totally that a good place for an FT8 segment on Top Band would be up
around 1.990 Mhz . . .
However, many parts of the world (including a lot of Europe) aren't licensed
to use that part of the band !
(I suspect that's why 1.840 was chosen - sadly)
I also agree that anyone transmitting a
Actually the problem with the alleged QRM and FT8 is more about simply
identifying ham computerized modes of digital transmission and
reception and separating them out from the rest of the noise generated
by poorly filtered appliances, leaky cable TV, power line data
communications etc. I am evide
Ladies and Gentlemen,
Isn't it time to just stop the discussion??
73, George, K8GG
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Topband Reflector Archives - http://www.contesting.com/_topband
I know this has been “Discussed Out,” but I just want to ask why the window is
in the 1840 area instead of the 1990 area? They are asking for QRM at 1840. It
will be a losing battle during contests.
Just sayin’
Chuck W5PR
Sent from Mail for Windows 10
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Topband Reflector Arc
Well said. Just a few weeks ago, someone made the point that we should be
thankful that there is activity up there. The gist of it was that during
the year, much of the time the only activity on 160m is digital. "Use it or
lose it" was his point.
I do not wish to discuss this.
73, Mike
www.w0btu
All -
I think most of the issues around the FT8 spectrum use - and CW QRM have
been aired.
I think most of use have gotten used to seeing carriers on our spectrum
displays up around 1838-1840 - and generally that doesn't present a problem
for most other uses of the band.
A little understanding o
