TenTec
[Top] [All Lists]

Re: [TenTec] DSP Filter BW (1.366 vs previous)

To: <tentec@contesting.com>
Subject: Re: [TenTec] DSP Filter BW (1.366 vs previous)
From: "Larry Rockfield" <w6ub@nxs.net>
Reply-to: tentec@contesting.com
Date: Fri, 14 Nov 2003 19:51:50 -0500
List-post: <mailto:tentec@contesting.com>
Yes, but 100 Hz DSP is much smoother and now pleasant to use with the tap at
150-160, especially if the 250 Hz roofing filter is engaged.

Larry W6UB

----- Original Message -----
From: "Bill Tippett" <btippett@alum.mit.edu>
To: <tentec@contesting.com>
Sent: Friday, November 14, 2003 6:13 PM
Subject: [TenTec] DSP Filter BW (1.366 vs previous)


> Hmmm...in trying this with the 100-110 Hz DSP
> filters, I noticed a rather drastic gain change (-18 dB) as I
> adjusted taps from max to min (199 to 32).  There is a very
> noticeable +6 dB jump from 104 to 99 and then back down
> from 99 to 94.  Tuning off-frequency, I believe I can tell the
> shape factor changes, but the gain change makes it difficult
> to tell what is really happening.  Think I'm going to stay with
> 199 for the time being.
>
> 73,  Bill  W4ZV
>
> _______________________________________________
> TenTec mailing list
> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>

_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec

<Prev in Thread] Current Thread [Next in Thread>