[time-nuts] eLORAN 99600 monitoring at 100 KHz

[David G. McGaw]

I had to change from my "Marine Standard" 3 ft whip and preamp to a 
small loop antenna and high-gain preamp, but am getting the signal in a 
lot of noise and spherics in NH such that an Austron 2100F is locking.  
There is a big difference between 1MW from Nantucket and 75kW from New 
Jersey!

David N1HAC

On 8/14/20 5:52 PM, Dana Whitlow wrote:
> Thanks, Paul.
>
> Does this "standard marine preamp" have an integrated antenna of some kind?
> If not (or  you're not using it), can you tell me about the antenna you
> *are* using?
>
> I've not "heard" so much as a peep here in south central Texas, but have
> only
> looked in the daytime.  Is the station transmitting around the clock?
>
> I do suffer from an abysmally-high noise level here.  But I'm trying to get
> a
> handle on whether it's even worth my trying further.
>
> Dana
>
>
> On Fri, Aug 14, 2020 at 4:23 PM paul swed <paulswedb at gmail.com> wrote:
>
>> Dana that was 11:29 am when you emailed me. Looking at the 3586 its -49 db
>> now.
>> To your second question I can't really know that. Its a standard marine
>> preamp. Might guess 20-30 db. But its nothing special. Made by a company
>> STS. Classic FET, filter , 2 X transistor design. It would be a bit of a
>> math guess to use the 3586 reading and deduce the actual field strength.
>> Regards
>> Paul
>> WB8TSL
>>
>> On Fri, Aug 14, 2020 at 4:08 PM Dana Whitlow <k8yumdoober at gmail.com>
>> wrote:
>>
>>> Paul,
>>>
>>> What time of day did you measure that signal strength?
>>>
>>> And what are the characteristics of the "standard marine preamp"?
>>> Most importantly, what field strength corresponds to 1000 uV output from
>>> it?
>>>
>>> Thanks,
>>>
>>> Dana
>>>
>>>
>>> On Fri, Aug 14, 2020 at 12:17 PM paul swed <paulswedb at gmail.com> wrote:
>>>
>>>> Hello to the group.
>>>> The signal is on the air.
>>>> I have just discovered one of my favorite HP 3586 SLVM has an issue
>> with
>>>> sensitivity.
>>>> For reference in Boston on a second 3586 the level is -51db avg. or
>> 1000
>>> uv
>>>> using a standard marine preamp 6' off the ground. The signal should
>>> remain
>>>> on until the 20th.
>>>> I think this also points to the funny issue I was seeing yesterday with
>>>> intermittent signal levels. Darn one more project to the list.
>>>> Regards
>>>> Paul
>>>> WB8TSL
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