); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY I used to use the clipon posistors to stabilise my crystals (the Murata BM500N previously mentioned) but after seeing some results on what temperature they really stabilise at versus what they should stabilise at i moved on to the heater controller design by John Hazell at
http://www.microwaves.dsl.pipex.com/mk2/mk2.pdf note in recent iterations the crystal is embedded in the aluminium block After using the calibration technique he mentions to operate the crystal at the "knee" point oscillators have had adequate stability for 134GHz local oscillator usage Dave > Message: 1 > Date: Wed, 10 Oct 2007 10:14:28 -0700 (PDT) > From: Tom Clifton <[EMAIL PROTECTED]> > Subject: [time-nuts] Improving the stability of crystal oscillators > To: [email protected] > Message-ID: <[EMAIL PROTECTED]> > Content-Type: text/plain; charset=iso-8859-1 > > While the website is not explicitly about frequency > measurement, there is an interesting bit on improving > the stability of crystal oscillators with external > heater controllers. While it may not be suitable for > long term high stability control it might be suitable > for many other purposes. > > http://www.qrss.thersgb.net/Crystal-Ovens.html > > The main page is also a good read: > > http://www.qrss.thersgb.net/Receiving-QRSS.html#Introduction _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
