Flexers,
Has anyone done any actual measurements on filter bandwidth in PowerSDR - I've
been having an on-going discussion with a friend of mine on filter sharpness,
etc. - basically bragging about how tight the software filters are.
However, when I use a signal generator and measure the
-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
radio.biz] On Behalf Of Mark Amos
Sent: Wednesday, February 14, 2007 4:20 PM
To: FlexRadio@flex-radio.biz
Subject: [Flexradio] PowerSDR filter bandwidth
Flexers,
Has anyone done any actual measurements on filter bandwidth in PowerSDR -
I've
Mark,
I would assume that you also turned off your AGC. I am surprised at your
figures. From what I hear, I would expect the filters to be much sharper
than that.
--Larry W8ER
Mark Amos wrote:
Flexers,
Has anyone done any actual measurements on filter bandwidth in PowerSDR -
I've been
Mark,
I measured the bandwidth of the narrow filters previously using
Spectrogram, a DSP and display program, and a RF noise generator. As
Eric pointed out, the largest DSP filters give the narrowest filter
widths. Using the FireBox at 48Ks/s, the 25 Hz filter was on the
order of 6o Hz at
, Guy.
- Original Message -
From: Larry W8ER [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Cc: FlexRadio@flex-radio.biz
Sent: Wednesday, February 14, 2007 7:22 PM
Subject: Re: [Flexradio] PowerSDR filter bandwidth
Mark,
I would assume that you also turned off your AGC. I am surprised
, for those real eyelash of the bacteria
sitting on the gnat's eyelash kind of measurements.
73, Guy.
- Original Message -
From: Larry W8ER [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Cc: FlexRadio@flex-radio.biz
Sent: Wednesday, February 14, 2007 7:22 PM
Subject: Re: [Flexradio] PowerSDR filter
think it does that).
- Jeff, K6JCA
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Guy Olinger, K2AV
Sent: Wednesday, February 14, 2007 4:53 PM
To: Larry W8ER; [EMAIL PROTECTED]
Cc: FlexRadio@flex-radio.biz
Subject: Re: [Flexradio] PowerSDR filter bandwidth
7 matches
Mail list logo
