From: Ed Tanton (firstname.lastname@example.org)
In a word Tim: no. It IS a thought: if you had "perfect pitch" AND a
receiver that was stable to several cycles short term-or rather for the
time necessary to compare enough crystals to find your matches... then
maybe. But I question whether a person can distinguish differences in the
tens of cycles (OK: Hertz.) Personally I don't think so. I THINK you would
want crystals as perfectly matched as possible... some of you crystal
filter gurus can answer that. But overall as to this idea as a method, I
don't think so. It NEVER hurts to ask Tim. How else are we going to learn.
At 01:58 PM 5/28/97 -0800, email@example.com wrote:
> Don't laugh out loud but:
> When hand picking crystals for a filter network, can you do it by ear?
> That is to say, can you plug them into an oscillator circuit and
> listen on a receiver for the ones closest in tone? Or are you looking
> for much more precision?
> How close should they be to each other? What can I expect?
> What if I just use four from the same batch? If they are off a little
> how much will it affect the final result?
> Tim, ka8ddz
Ed Tanton N4XY EMAIL: firstname.lastname@example.org
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