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Date: Mon, 5 Jun 2000 10:12:09 -0700 (PDT)
From: "Clifford Buttschardt" <cbuttsch@slonet.org>
To: "Mike Dennison" <mike.dennison@rsgb.org.uk>
Cc: rsgb_lf_group@blacksheep.org
Subject: Re: LF: Copying CW
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There are chips called "bucket brigade" delay lines that will do this job
easily.  Radio Shack and Digi-Key here in the States would have them.  I'd
check MAPLEN (spelling could be wrong here!) using that terminology.
Cliff K7RR


On Mon, 5 Jun 2000, Mike Dennison wrote:

> I have been playing around with feeding differently derived audio into 
> the two halves of stereo headphones with some interesting results. 
> I will report in detail when the tests are complete. In short, it is 
> certainly possible to improve headphone reception, both in terms of 
> close-in selectivity and resistance to static.
> 
> One question. How do I make an electronic circuit to delay a 
> broadband audio signal by about one-thousandth of a second, 
> without resorting to DSP? Any genius out there with a simple 
> circuit? And yes I do know about the methods (that were originally 
> used for electric guitar echo) such as connecting the diaphragms of 
> a loudspeaker and a microphone by using a spring, and also the 
> tape recorder method.
> 
> 
> 
> Mike, G3XDV (IO91VT)
> http://www.dennison.demon.co.uk/activity.htm
> 
> 
>