[CQ-Contest] IARU - Join Us

[Bill Turner]

ORIGINAL MESSAGE:

On Sun, 17 Jun 2007 22:05:16 -0500, Jim George <n3bb at mindspring.com>
wrote:

>Bill, I think that this is erroneous from a technical standpoint. RTTY 
>signals are wide, and can not be removed with a 400HZ or 250HZ filter. They 
>have inherent frequency shifting, unlike CW. 

------------ REPLY FOLLOWS ------------

With its 170 Hz shift, including sidebands, RTY occupies about 250-300
Hz of spectrum, depending on the sharpness of the keying waveform. CW,
depending on the speed and sharpness of the keying waveform, occupies
about 50-100Hz. CW is not a single frequency signal when the sidebands
generated by on-off keying are considered. Granted, RTTY is slightly
wider, but not much. Not nearly as much difference as CW/RTTY and SSB.
There is no reason to say they are incompatible other than operator
likes or dislikes.

Bill W6WRT