[600MRG] Crystals: Where can I get them?

[D.J.J. Ring, Jr.]

Are there any which generate 400 to 520 kHz range, or 1,640 kHz to 2080 kHz
for the divide by four circuits used by Mackay and  others?

73
DR

On Fri, Feb 26, 2021 at 9:11 PM Murray Greenman <denwood at orcon.net.nz>
wrote:

> Phil,
>
> The solutions offered so far will certainly be the simplest. By why not
> step forward a generation or two and use a synthesiser?
>
> You could build your own, but one of the simplest, designed specifically
> as a 'crystal replacement' is the Progrock, by QRP Labs:
>
>     https://www.qrp-labs.com/progrock.html
>
> It can be pre-programmed (without a computer) to provide three independent
> outputs between 3.5 kHz and 300 MHz.
>
> 73,
> Murray ZL1BPU
>
>
> On 27/02/2021 1:46 pm, k2pg at frontiernet.net wrote:
>
> I have been inactive for a while and was unpleasantly surprised to learn
> that International Crystal in Oklahoma City went out of business several
> years ago. I have a retired Scientific Radio transmitter that was retired
> from marine service on the 600 meter band. Several years ago, I purchased
> crystals from International for two frequencies above 500 kHz that were
> licensed to me under my experimental license. I need to get some crystals
> for the amateur 630 meter allocation. Where can I get these?
>
> Phil Galasso
> K2PG / WE2XTT
>
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