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Date: Mon, 06 Aug 2001 10:46:54
To: rsgb_lf_group@blacksheep.org
From: "Rik Strobbe" <rik.strobbe@fys.kuleuven.ac.be>
Subject: Re: LF: SV: Re: SV: LF Receivers
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Hello Christer,

what about a ceramic resonator for 3.58MHz ? 
I used that for a stable 80m VXO some years ago (could pull it 80kHz !).
Stability is a bit less than a xtal, but still many times better than a
free running VFO.

73, Rik  ON7YD

At 10:59 1/08/01 +0300, you wrote:
>John,
>
>>3579.545 kHz color burst crystal
>
>You are right! Thanks for the tip.
>
>I don't know if it is "easily pullable" though... I remember trying a "32 pF
>parallel 3579 rock" in series resonant mode but I did not get lower than
>about 3579.3 kHz. The oscillator was a two transistor thing with the xtal
>connected between the emitters (xtal sees low Z = preserve the Q).
>
>Perhaps it will work with some additional inductance in series with the
>xtal but the Q will suffer I guess...
>
>Maybe a *very* low quality xtal will do the trick (lower equivalent L/C =
lower Q)?
>
>Do you have any circuit suggestion for a suitable "rock bender"?
>
>73
>Johan SM6LKM
>
>
>
>
>