Maybe I'm wrong, but can I assume that the narrower filters have a greater
minimum length? If so, my observations have a strange quirk. I don't
remember the exact numbers, but as I was reducing the bandwith from say,
1000 Hz, at 280 Hz, the filtering went wide open. However, when I continued
down to 270 Hz, the filtering was restored. Then at 200 no filtering, 190
filtering, etc.
----- Original Message -----
From: "Sinisa Hristov" <shristov@ptt.yu>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Friday, March 03, 2006 1:54 AM
Subject: Re: [TenTec] Orion 2.055 Observations
> Mark Erbaugh wrote:
>
>> If you set the number of taps for the DSP filters to 32 (minimum), the
>> filter doesn't track bandwidth changes very well. As you decrease the
>> bandwidth (in 10 Hz steps), you will find a step where there is
>> essentially no filtering (i.e. it opens wide). This is repeatable.
>
>
> This is normal.
> There is a theoretical minimum filter length for a given bandwidth.
>
>
> 73,
>
> Sinisa YT1NT, VE3EA
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>
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>
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