[HBR] [Glowbugs] Quartz Crystal Oscillator

[Brian Carling]

In this lifetime? Well, there ARE a few around certainly some that are close
to your desired 1685 kHz anyway.

I have some 1700 kHz crystals available in fact. Any use to you?

Regards - Brian, AF4K


On Thu, Aug 4, 2011 at 5:34 PM, <n2ey at aol.com> wrote:

>
>
>
>
>  -----Original Message-----
> From: John Landrigan <jlandrigan at pol.net>
>
>
>
> The next grandiosity is to find a means to develop a 2nd oscillator that will
>
> mix so that an output will be made available to either an 85 KHz IF or 50 KHz
>
> IF. It seems like the finding of crystals specific for 1685 KHz and 1650 KHz is
>
> not going to happen in this lifetime.
>
>
> Maybe not - but there are other possibilities.
>
>
> You could use 842.5 kHz and 825 kHz xtals in a pentode oscillator (modified-Pierce, grid-plate) and double in the
>
> plate circuit. Or  561.667 kHz and 550kHz xtals and triple. There are probably FT-241s in those ranges.
>
>
> 73 de Jim, N2EY
>
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-- 
Regards - Bry, AF4K
"Stay thirsty, my friends!"