[time-nuts] Re: UTC Backbone in Europe

[Bill Katz]

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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