[time-nuts] EIP545A 18GHz counter query

Ed Palmer ed_palmer at sasktel.net
Tue Nov 27 20:45:27 UTC 2012


Hi Don,

Yes, I've heard of SRDs.  I think every Rb standard uses them.  I 
recently purchased a YIG Multiplier that includes an SRD followed by a 
YIG filter.  But, from my reading, there are some significant issues 
that you run into when driving an SRD.  I'm still playing with mine.

Ed

On 11/27/2012 2:15 PM, Don Latham wrote:
> snip
>> I'm in the same position as you regarding testing at high frequencies.
>> You might be able to get a signal at the second or third harmonic of
>> your generator by cranking the level to the maximum and then using the
>> counter's Band 3 frequency limits feature to only look at that
>> frequency.
> snip
> You can also get a step recovery diode and generate a bunch of harmonics...
> DonL
>





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