[Elecraft] FCC 60m Band Change Rules Published

Sandy ebjr37 at charter.net
Sat Feb 4 17:29:53 EST 2012


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: elecraft at mailman.qth.net
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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