[time-nuts] Re: UTC Backbone in Europe

[W3AB]

Julie, David's daughter had the idea for the MB Aquarium. David and some of his engineers did G jobs for the aquarium's controls, which are impressive & still in operation.

David had the idea for MBARI, thinking it would be the research arm of the aquarium. However as they matured they realized that would not work though we, MBARI, collaborated with the aquarium on projects and sent live A/V via a full duplex m/wave link from the research vessel's ROVs to the aquarium via Mt Toro in Monterey. Visitors could watch the science in real time & ask the scientists questions.

We also built our own DGPS system since the CG's was unreliable in the bay. I also built a DGPS system on the APRS freq for hams, or anybody with a 2M RCVR, to use before WAAS became widely available.

As for the SA, I'm sure it has been long retired. We bought a lot of HP equipment.

I have a HP-200B I need to get rid of.

⁣___
Sent from my two-way wrist watch
73 de W3AB/George ​

On Nov 22, 2024, 10:31, at 10:31, Bill Katz <billk at bbjj.org> wrote:
>I used to work at HP in the spectrum analyzer division in Santa Rosa,
>and
>worked on the 8562 series of spectrum analyzers.  Soon after we
>released
>the 8562A, we were somewhat surprised to see an employee purchase
>request
>come through, from none other than David Packard!  Of course it is his
>daughters that created and run the Monterey bay Aquarium and research
>institute.  One of our engineers dug out an old HP model 200-B audio
>oscillator (HP's very first product), and recorded the spectrum on the
>8562
>and saved it before shipping it with a nice note.  I wonder if that is
>the
>8562 that is still being used by the Monterey Bay Research Institute?
>
>-Bill Katz
>
>On Fri, Nov 22, 2024 at 9:26 AM W3AB via time-nuts
><time-nuts at lists.febo.com>
>wrote:
>
>> I co-authored an article on finding a GPS jammer.
>> https://www.gpsworld.com/the-hunt-rfi/
>>
>> ⁣___
>> Sent from my two-way wrist watch
>> 73 de W3AB/George ​
>>
>> On Nov 21, 2024, 21:57, at 21:57, Hal Murray via time-nuts <
>> time-nuts at lists.febo.com> wrote:
>> >
>> >Poul-Henning Kamp said:
>> >> There's no escaping the wavelength:
>> >> Hiding a transmitting antenna for 100kHz is very, very hard.
>> >
>> >You can use the power lines.
>> >
>> >I remember a story from Dave Mills many years ago.  I tried to find
>it
>> >the
>> >other day, but no luck.
>> >
>> >His WWVB gear wasn't working -- fading out due to EMI.  He drove
>around
>> >
>> >and found a factory that was spewing lots of trash.  I think it was
>> >going
>> >out the power line.  The FCC wasn't interested.  Anybody else
>remember
>> >that story?
>> >
>> >
>> >A lot depends on how big an area you want to jam.  Cheap eBay GPS
>> >jammers
>> >were intended to cover the receiver on a truck but at least one
>managed
>> >to
>> >get an airport in New Jersey that was near a freeway.
>> >
>> >I wonder how big an area a similar size and power unit for 60 or 100
>> >kHz
>> >would take out with various non-monster antennas.
>> >
>> >--
>> >These are my opinions.  I hate spam.
>> >
>> >
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