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Re: [linrad] Linrad
- Subject: Re: [linrad] Linrad
- From: "John Harrison, NI1B" <jmh6@xxxxxxxxxxxxxx
- Date: Sun, 27 Jun 1999 18:25:16 -0400 (EDT)
Bob, Leif was kind enough to add a "hard limiter" to linrad. This is an
old idea from an Collins radio of years ago. The control is on the FFT3
I use it all the time.
I makes listening to CW most pleasant.
I adjust the volume on the FFT3 window so the HF background noise is
just below clipping and I adjust the speaker volume control for a
When a signal appears it is clipped right away, keeping loud noises from
my ears :)) Also, if there is QRN it is clipped :)))
Also, I can tell how loud the signals are by how clipped they sound :))
(The lounder the higher harmonics are, the louder the incoming signal is.)
Also, the CW doesn't seem to echo around the room as much.
I have been working on a 'poor man's' 24 bit ADC. Someday I hope to see
my first one.
On Thu, 26 Jun 2003, Robert McGwier wrote:
> I am new to the list. I would like to hear
> experiences of people using the noise blanker
> in Linrad on HF. THis piece of Leif's work
> is the part that has piqued my interest the
> most. Before this, I had never considered
> doing noise pulse cancellation rather than
> noise blanking. I am very interested in
> extending this work using techniques known
> to me.
> Bob McGwier