[time-nuts] oscillators

Bob Camp lists at rtty.us
Thu Aug 30 22:16:46 EDT 2012


Hi

I think they would do better to just put in a connector to drive it with a TBolt….

Bob

On Aug 30, 2012, at 8:47 PM, Don Latham <djl at montana.com> wrote:

> Elecraft seems to be having some trouble with the KX3 stability for WSJT
> on 6m. They also have a temp sensor on the bard, apparently and are also
> trying this out. I don't know any more about it than that.
> Don
> 
> Jim Lux
>> On 8/30/12 9:33 AM, Bob Camp wrote:
>>> Hi
>>> 
>>> The fundamental / third approach is one of several possible ways to
>>> go. You
>>> can also run an SC on the B and C modes to get thermometer data. Early
>>> implementations used a pair of independent blanks, one cut to be a
>>> good
>>> thermometer. Some have even gone as far as to mount a thermistor on
>>> the
>>> crystal.
>>> 
>> 
>> I've used the "sensor on oscillator can" technique very recently on a
>> software defined radio.  Over the next year, I'll get some data on how
>> well it works in use.  The idea is to use a low power TCXO and a sensor,
>> rather than an OCXO, to meet a fairly tight frequency requirement (a few
>> hundred Hz out of 2 GHz)  The TCXO can get you do a few ppm or better.
>> The sensor should let me get about an order of magnitude better, and I
>> need to measure the temperature anyway, and it's easy to integrate with
>> the software waveform code.
>> 
>> 
>> 
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> 
> 
> -- 
> "Neither the voice of authority nor the weight of reason and argument
> are as significant as experiment, for thence comes quiet to the mind."
> De Erroribus Medicorum, R. Bacon, 13th century.
> "If you don't know what it is, don't poke it."
> Ghost in the Shell
> 
> 
> Dr. Don Latham AJ7LL
> Six Mile Systems LLP
> 17850 Six Mile Road
> POB 134
> Huson, MT, 59846
> VOX 406-626-4304
> www.lightningforensics.com
> www.sixmilesystems.com
> 
> 
> 
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