[time-nuts] EIP545A 18GHz counter query

Don Latham djl at montana.com
Tue Nov 27 22:03:39 UTC 2012


Hi Ed: I have one of these too; it takes in about 200 MHz, output
0.4-1.8 GHz. ten ohm coil, also a heater at 28 v. I also have a filter
that uses about the same voltage/current. I did find an LED/battery
charger module from China, pretty cheap, that purports to be pwm
adjustable; we'll see. I'll try driving it with an Arduino.
Don

Ed Palmer
> 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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-- 
"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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