[time-nuts] Dual Mixer

[EWKehren at aol.com]

Thanks for the info. I can use 40 MHz since I divide it down to 5 and 10  
MHz after pulling it to get the proper offset. I prefer 80 because I have 
tests  with a 100 MHz Xtal with great results. Thanks again   Bert  Kehren
 
 
In a message dated 11/16/2009 10:43:05 A.M. Eastern Standard Time,  
alan.melia at btinternet.com writes:

Mmmm I  think you are comparing with cheapie "computer grade crystals". That
price  of $12 is pretty much in line with charges for "made to measure"
crystals  in the UK at £7 to £8 (GBP) each (3rd or 5th OT) some discount  
for
quantities over 10. These would be on spec and of commercial  quality,
suitable for instance for radio applications. Computer grade  cystals can be
ok for some applications but are generally of a much lower  standard of
quality. There is much lower demand for crystals since all  radio use
sythersisers now and a lot of companies have gone out of business  because 
to
total market is much smaller.

If cheapies will suit and  80MHz is not available you could always use 40MHz
which I think is in the  range and use a low noise doubler ??

Alan G3NYK



-----  Original Message -----
From: <EWKehren at aol.com>
To:  <time-nuts at febo.com>
Sent: Monday, November 16, 2009 3:08  PM
Subject: [time-nuts] Dual Mixer


> As part of the Dual  Mixer project I am looking for a source of reasonably
> priced 80 MHz  Xtal's in HC 49 holder. International Crystal wants $12 in
> fifty   Qty. In my opinion to high. Any help will be appreciated.   Thanks
Bert
> Kehren
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