[RTTY] Re: [WriteLog] Measuring filter bandwidth

[Jerry Pixton]

All,

It works great!

Jerry and I spent Sunday (while the CW signals "invaded" the rtty bands) 
quantifying the various filters and their shapes available on his IC756 Pro 
and my IC756 Pro II. I now have the numbers to back up my subjective 
decision to start using the LSB-D filters for rtty, instead of the regular 
RTTY filters or the Twin Peak rtty filters.

Jerry, W6IHG




At 03:12 PM 2/23/2004 +0000, Jerry Flanders wrote:
>In the thread: Re: [WriteLog] AFSK on RTTY not LSB on 1000mp field,
>At 08:09 2/23/04, Jim Smith wrote:
>
>>.
>><snip>
>>Have you actually checked the bandwidth of the filter(s) selected by your 
>>Nar1 when in RTTY mode?  If you do get 500 or thereabouts for Nar1 and 
>>250 or so for your Nar2, the next thing is to figure out how you're doing 
>>it. <SNIP>
>>
>>73 de Jim Smith   VE7FO
>
>
>
>It is easy to check your passband performance (BW, slope, etc) if you have 
>a sound card connected to the radio's output, as most of us do.

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Dr. Jerry R. Pixton, PIXOS Designs LLC
http://www.pixos.com/designs/RadioTuner/
jpixton at shentel.net
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