Dear Dr. Johnson and Mr. Ellington: Very many thanks for your comments!!- I
always wondered about that odd sound! If Mr. Ellington would furnish us with
his web site address, I will rebuild my sidetone oscillator to duplicate his.
Thank's again for both comments, I already feel much better. - Sherrill W.
K4OWN.
>>> "Steve Ellington N4LQ" <n4lq@iglou.com> 12/29 3:49 PM >>>
TenTec started out using what's called a "relaxation oscillator".
Hardly relaxing! Starting with the Delta 580 they switched to a
"bridged T" oscillator which produces a decent sine wave. On one of my
Omni C's I ripped out the relaxion osc and rebuit it as a T. It's
really a simple circuit and can be found by looking in any ARRL
Handbook or schematic of the 580, Paragon, Omni V etc. Most of the
parts can be reused from the old oscillator. I built mine "ugly" style
on top the original board.
The audio filter ideal works too but is a little more complex. If
there's enough need, I'll post the diagram for this osc on my web
page.
Steve N4LQ
----- Original Message -----
From: "Dr. Gerald N. Johnson, P.E." <geraldj@ames.net>
To: "Sherrill WATKINS" <SEWATKINS@dgs.state.va.us>
Cc: <JimN0OCT@aol.com>; <tentec@contesting.com>;
<csturner@falcon.csc.calpoly.edu>
Sent: Wednesday, December 29, 1999 3:29 PM
Subject: Re: [TenTec] Ten Tec, Warts and All. . .
>
> Sidetone in the Corsair IS a sawtooth. Keys nicely but sounds like a
> buzz saw hitting a knot. When it bothers me I go to an external DSP
> filter with about a 2KHz lowpass, then it sounds fine.
>
> 73, Jerry, K0CQ
>
> --
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>
>
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