Posted by
w5tvw on
Feb 04, 2012; 10:29pm
URL: http://elecraft.85.s1.nabble.com/Re-FCC-60m-Band-Change-Rules-Published-tp7254819p7254992.html
Joe,
Did you see this indicated anywhere in the information that was in the
Federal Register? I saw no indication that the PSK signal "MUST" be on some
specific location within a channel. I do remember some random discussion
about there being one user per channel at the same time, but this doesn't
make sense for the efficient use of PSK-31. Being able to multiplex several
QSO's at one time is a great advantage in a spectrum environment with little
space per channel! If you see ANY reference to this in the Federal Register
posting, let me know if I have overlooked it!
73,
Sandy W5TVW
-----Original Message-----
From: Joe Subich, W4TV
Sent: Saturday, February 04, 2012 2:45 PM
To:
[hidden email]
Subject: Re: [Elecraft] FCC 60m Band Change Rules Published
> I guess the only thing not specified is where the PSK-31 signal shows
> up above the carrier frequency. Don't most PSK-31 transmissions use
> something around 1000 Hz?
In the discussion part of the Report and Order, the Commission made it
clear that the PSK31 signal *must* be located on the channel center -
there were not to be multiple signals per channel creating a "mini
PSK31 band". To comply with the Commission's intent, PSK31 should
be operated with a 1500 Hz audio tone and the dial set 1.5 KHz below
the channel center. If, as in the case of the K3, the PSK generator
uses a subcarrier other than 1500 Hz, the dial frequency must be
offset as needed to place the resulting PSK31 signal in the center
of the assigned channel.
73,
... Joe, W4TV
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