[GPS_Standard] Ovenaire OSC 49-61C

[Geoff Blake]

Hi Zac, List,

On Sat, 26 Jan 2008, Zack Widup wrote:

> I'm not familiar with the OSC 49-61C unit but if it is stable and can be
> tuned with a mechanical adjustment, you can build the GPS standard unit
> using an HP10811 and use it to calibrate the Ovenaire unit for shorter
> duration accuracy.

Well, I hope that it is stable, it was working OK and next week I
intend to put it up against the R & S XSRM at work, which tracks
MSF 60kHz. to better that 1 in 10^11.

> Use the stand-alone Ovenaire unit as a reference in the field and
> calibrate it against the HP/GPS unit every so often.

Yes, this is what I intend to do. Once I have worked out the power
consumption, which I believe to be ~4W when the oven has reached
operating temperature. The sad thing is that I need 24V of battery
rather than 12V after allowing for regulator voltage drop :-(

> I'm doing that with some Isotemp units I'm using as references for
> microwave LO's.

My use exactly. I figure that it will keep my transverters to
within a few 10's of Hz at worse.

73 Geoff
-- 
    Geoff Blake G8GNZ      located  near  Chelmsford,  Essex,  U.K.
    Please reply to:      geoff(at)palaemon(dot)demon(dot)co(dot)uk
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