[time-nuts] oscillators

Don Latham djl at montana.com
Fri Aug 31 00:47:23 UTC 2012

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.

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

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