On Jan 6, 2009, at 11:47 AM, WS7I wrote:
All I can say about filters is that its nearly a requirement now for
250 Hz filters and even then its elbows to knees so to speak on 20
Meters. Hopefully when 10 returns at least it will spread out some.
__________
Why is the standard 170 Hz for RTTY? Didn't it use to be 850?
I've used a 30 Hz mark-space split with success. If you're software
based, the transition to a narrow standard would be easy.
I'm relatively new to RTTY and don't know the history. Anyone?
73 - Steve WB6RSE
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