[time-nuts] Inside a CTS 1960017 OCXO

Bob Camp kb8tq at n1k.org
Tue Mar 1 18:13:32 EST 2016


Hi

The spectrum plots and scope plots do not look like a blocking oscillator. They look very much 
like an internal spur generated by something in the circuit taking off at low frequency. 

Bob


> On Mar 1, 2016, at 10:09 AM, Alex Pummer <alex at pcscons.com> wrote:
> 
> sometimes high frequency oscillators could get in certain mode of operation the "blocking oscillation" see here: https://en.wikipedia.org/wiki/Blocking_oscillator, also it could happen, that the high frequency oscillation does not stops entirely, just undergoes an amplitude fluctuation, that could cause side bands on both side of the carrier. Blocking oscillation could happen because of to strong positive feedback -- due to design error or component error. The dumping of that product on e-Bay also could be a sign of a to late recognized error
> 73
> KJ6UHN
> 
> On 2/29/2016 2:04 PM, Gregory Muir wrote:
>> Not sure if I am missing something here or not but an early mention was made regarding synching the test equipment used to the 60 Hz line to see if the purported 60 Hz anomaly is actually synchronous or asynchronous.  I haven't heard anything regarding this since then.
>> 
>> Greg
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