[time-nuts] Are the days of buying a crystal numbered?

Bob Camp lists at cq.nu
Mon Feb 22 17:09:44 UTC 2010


Hi

The fixed frequency XO in the package will have a G sensitivity like any
other strip crystal oscillator. That could be as bad as 1x10-8/g. It could
be an order of magnitude better. It could also vary from unit to unit.

Bob

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Henry Hallam
Sent: Monday, February 22, 2010 11:33 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Are the days of buying a crystal numbered?

Anybody know what its performance is like under vibration?

Henry

On Mon, Feb 22, 2010 at 5:32 AM, Marco IK1ODO -2 <ik1odo at spin-it.com> wrote:
> There are several kits around using the Si570 serires of oscillators. I
> built the FA-SY and it's very nice:
>
> http://www.funkamateur.de/download-files/dl1fac_FA-SY-Umbau.pdf
>
> FA-SY includes a program to trum the frequency, and a simple oven to heat
> the oscillator. It stays in some parts in 10^9, and is spectrally very
> clean. I expected it to be much worse :-) - I may post some plots, if
anyone
> is interested.
>
> Then see http://www.mydarc.de/dg8saq/SI570/index.shtml and
> http://www.sdr-kits.net/USB/USB_Description.html
>
> 73 - Marco IK1ODO
>
>
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-- 
Henry Hallam

Sent from my Laptop

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