[RTTY] 18 Mhz Band

[Joe Subich, W4TV]

 > Not quite sure how close to 110 one can get, but probably less than
 > 109.5 is too close.

With a theoretical bandwidth of around 340 Hz for 170 Hz shift 45.45
baud FSK, one could get as close as 18,109.9 (MARK).  For USB dial
frequency (AFSK), one would want to stay below 18,110 - MARK - 85 Hz
which, for 2125/2295 tones (18,110 - 2.295 -.085) is about 18,107.6 KHz.

73,

    ... Joe, W4TV


On 4/8/2012 6:32 PM, Jay WS7I wrote:
> Seems from the many that are transmitting out of band today that most
> don't know where the edge might be.  18.110 is the edge.  At least two
> DX stations working above that and I am printing 10's if not 100's of
> signals.
>
> Not quite sure how close to 110 one can get, but probably less than
> 109.5 is too close.
>
> May the fcc not ring your phone.
>
>
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