[RTTY] uh, what about spectrum?

[Mike]

Hello Bill,

Thanks for pointing it out.  That's why I put it as a question.

At 12:00 AM 1/16/2006, Bill Turner wrote:
>ORIGINAL MESSAGE:
>
>At 08:10 PM 1/15/2006, Mike wrote:
>
>>Since I use 170 Hz shift (bandwidth) and the DX stations I have
>>contacted in and out of contests are also 170 Hz shift, the ARRL
>>proposal should not impacting my operation in the 3520 - 3525 KHz
>>area and below 7030 KHz and below 3580 KHz.  Am I not reading it
>>correct?  Is there another ARRL or FCC document/proposal I should be
>>looking at?
>
>
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
>Shift is not the same as bandwidth, as the mathematicians among us 
>will be quick to point out. RTTY is a form of FM, and FM produces 
>sidebands. The bandwidth is a function of both shift and baud rate.
>
>I'll leave it to the pros to calculate exactly, but somewhere 
>between 250 - 350 Hz is required for 170 Hz shift.
>
>Bill, W6WRT

         73,
         Mike, K4GMH