[CQ-Contest] Narrow CW filters and RTTY contesting

Robert Chudek - K0RC k0rc at citlink.net
Fri Sep 18 18:06:40 PDT 2009

Yes, a 300 Hz filter will work just fine on RTTY, especially during the 
crowded conditions during CQWW and ARRL Roundup contests. Theoretically you 
can narrow down to 265 Hz before you begin to degrade a standard 45.45 baud 
170 Hz RTTY signal.. There was a technical discussion on the RTTY reflector 
regarding this topic within the last couple of weeks.

73 de Bob - KØRC in MN

----- Original Message ----- 
From: "John Geiger" <aa5jg at yahoo.com>
To: <cq-contest at contesting.com>
Sent: Friday, September 18, 2009 9:45 AM
Subject: [CQ-Contest] Narrow CW filters and RTTY contesting

> Is the Yaesu/INRAD 300hz mechanical CW filter still wide enough to use 
> with RTTY operations and contesting, or would the 500hz filter work 
> better?
> 73s John AA5JG
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