[time-nuts] LORAN-C

[paul swed]

I have not been able to do anything work and a strong investment in time in
plumbing this week. Hey you have to fix'em occasionally.
Regards
Paul.

On Tue, May 1, 2012 at 3:16 PM, Stan, W1LE <stanw1le at verizon.net> wrote:

> Hello PHK,
>
> Thanks for the tips.  I have not done this yet, so I am creeping along.
> I also have a 33120A with the the option 001 for using an external
> reference.
> Sounds like the arbitrary signal capability is the way to go,
> If I can not find an appropriate 2100/2100F output.
>
> Thanks   Stan, W1LE     Cape Cod
>
>
>
> On 5/1/2012 12:02 PM, Poul-Henning Kamp wrote:
>
>> In message<4FA006E8.5040304@**verizon.net <4FA006E8.5040304 at verizon.net>>,
>> "Stan, W1LE" writes:
>>
>>  I will use a HP-3336C with the station 10 MHz (GPS/DO) reference.
>>>
>>> Typo:  trigger should really be 11.148272 Hz instead of KHz !
>>>
>> You need a really amazing stable and noise-free trigger to lock
>> onto a 5.5Hz (see below) sine at the required level of stability
>> (~2usec).
>>
>> I used my HP33120A once, but its square output is made with a
>> comparator on the sine wave, and has pretty bad jitter.
>> Switching to saw-tooth solved that, defining my own arbitrary
>> square-wave was even better, not sure why.
>>
>> You want 1/(2*.089700) = 5.574136 Hz, otherwise every other
>> loran-c pulse will cancel out due to the A/B coding polarity.
>>
>> If you don't have a counter-based signal generator, consider stealing
>> a GRI or FRI-rate signal from one of your loran-C receivers, I belive
>> the AUSTRON 2000/2100 offers it on a BNC at the backside.
>>
>>
>
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