[1000mp] 1000MP Filter recommendation request
Kok Chen
chen at mac.com
Thu Sep 30 20:52:06 EDT 2004
On Sep 30, 2004, at 3:21 PM, Joe Subich, K4IK wrote:
> You may not find the cascaded 250 Hz filters very usable
> for RTTY as their overall bandwidth approaches the minimum
> required bandwidth (about 220 Hz) for 45.45 baud/170 Hz shift.
The cascaded 250/250 INRADS are fine on my FT-1000MP. You just need to
tune carefully. I use it when S&P'ing in a crowded contest. If you
are CQ'ing, you would need a wider filter to print those who answer off
frequency.
Come to think of it, I don't have problems printing TNCs with 200 Hz
shifts (or the ops who have set their shift during a contest to 187 Hz
as a compromise between the RTTY standard and the 200 Hz shift guys).
73
Chen, W7AY
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