Re: FCC 60m Band Change Rules Published

Posted by Joe Subich, W4TV-4 on Feb 04, 2012; 8:45pm
URL: http://elecraft.85.s1.nabble.com/Re-FCC-60m-Band-Change-Rules-Published-tp7254819p7254840.html


> 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


On 2/4/2012 3:32 PM, Mike Morrow wrote:

> Sandy wrote:
>
>> I am planning on trying CW for the first time on 60 meters on the new
>> channel 3 on 5358.5.  Just hope the PACTOR stuff doesn't jump on that
>> channel and "claim" it.
>
> That channel will likely become the favorite 60 meter frequency for the
> several military and vintage commercial radio USB nets because the
> carrier frequency 5357 kHz can be precisely entered on units that can be
> set only in 1 kHz increments.  All other 60 meter USB channels require the
> ability to set the unit on 0.5 kHz increments.
>
>> It looks like there isn't ANY "normal" RTTY authorized, only PSK31.  It
>> would be hard to run "normal" RTTY with only a 60 Hz. bandwidth.
>
> The rules mention only 60H0J2B and the discussion explains why, due to the
> J2B designation, it is considered RTTY.  The 2K80J2D Data mode seems to
> refers to PACTOR-III.  But isn't PACTOR-III a commercial and proprietary
> protocol?  The FCC seems to include it for some future use with non-ham
> emergency networks.
>
> So, the authorized emissions seem pretty simple:
> 150HA1A  CW Morse telegraphy,
>           transmitter dial on the channel center frequency
> 2K80J3E  USB phone,
>           transmitter dial 1.5 kHz below the channel center frequency
> 60H0J2B  RTTY (PSK-31 sent on USB phone),
>           transmitter dial 1.5 kHz below the channel center frequency
> 2K80J2D  DATA (PACTOR-III sent on USB phone),
>           transmitter dial 1.5 kHz below the channel center frequency
>
> 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?
>
> I wish conventional 170 Hz FSK RTTY had been authorized.  I don't know
> why that would be worse than USB Phone or PACTOR-III.
>
> 73,
> Mike / KK5F
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