[Lowfer] Icom R75 Frequency Jumps

[Warren K2ORS]

  > snip OXCO keeps the room warm with a few Watts of heat :-)

Laurence,

  I visited M.I.T. Draper Labs this week and saw that they had developed 
a chip scale atomic clock with very low power consumption. From a Google 
search I see that NIST also has developed a chip scale atomic clock and 
Symmetricon is offering one for sale.   I believe that prices are still 
very high but should drop dramatically if quantity production is achieved.

73 Warren





On 8/9/2013 1:58 PM, Howell, Laurence J wrote:
> Graham - I built the G3RUH GPSDO variant dead bug style and driving my QRPLabs Ultimate 2 transmitter kit/TS850/870 locks - works a treat and the
> I need to finish the tripler for the R75 which I know I started a couple of years back but the board is hidden under a pile of debris somewhere...but in all honesty the cal/stab is pretty good enough at LF without it here.
>
> First leaves are turning yellow
>
>
> Laurence KL 7 L  Wasilla Palmer Alaska
>
>
>
> -----Original Message-----
> From: lowfer-bounces at mailman.qth.net [mailto:lowfer-bounces at mailman.qth.net] On Behalf Of Graham
> Sent: Thursday, August 08, 2013 5:42 PM
> To: lowfer at mailman.qth.net
> Subject: [EXTERNAL]Re: [Lowfer] Icom R75 Frequency Jumps
>
> G3RUH's GPSDO uses the Jupiter's 10khz output to phase lock to a 10Mhz
> OCXO divided down to 10khz in order to discipline the oscillator.
>
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