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Re: [RTTY] 300hz or 500hz IF filter?

To: rtty@contesting.com
Subject: Re: [RTTY] 300hz or 500hz IF filter?
From: Jay WS7I <ws7ik7tj@gmail.com>
Reply-to: ws7ik7tj@gmail.com
Date: Thu, 22 Aug 2013 15:01:49 -0700
List-post: <rtty@contesting.com">mailto:rtty@contesting.com>
Nah,  If Chen chimes in it will be 2.8 Khz filter and "real" software!!!!



On 8/22/2013 2:56 PM, Peter Laws wrote:
On Thu, Aug 22, 2013 at 4:38 PM, David VE3VID <ve3vid@hotmail.com> wrote:
Hello everyoneI would like to outfit my FT-857D portable rig with an IF filter 
on its 455khz stage.  INRAD sells a suitable 500hz unit.  They also have a 
300hz unit.   I am leery about the 300hz filter being too narrow.
Any opinions?
Chen will chime in, I'm sure, and will have the most accurate answer,
but I think the "optimal" width for 45.45-baud 170-Hz shift RTTY is
350 Hz.




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