Hi,
I just subscribed to this list but I have been interested in time
standards for some years and have been reading the archives. My specific
interest is in an accurate frequency standard for my home lab so that I
can do my own "calibrations" of the ovenized timebases used in
oscilloscopes, counters, synthesized generators and the like. I had
originally thought it would be really cool to own my own primary
standard and have been trolling eBay for some time looking for an HP
5061A, but I never really wanted to spend the big $$$$ or gamble on a
unit in unknown condition having a good tube so I sat on the idea for a
number of years. However, I have recently started working on a project
where I really need an accurate frequency reference and after
researching GPSDOs I decided that is the way I would go.
Last month I bought on eBay a used HP 58503a and matching antenna.
Unfortunatly, the system would not work (the HP wouldn't even finish
booting) and when I opened it up I found that the GPS board is
completely missing. After reading a bunch of back posts from this group,
it appears that what I need is a Motorola VP Oncore board and that other
versions (such as the UT+) will NOT work. Unfortunatly, I don't see any
VP Oncore boards for sale on eBay or elsewhere. This leads me to my
questions. First, am I correct that I can't use any Oncore version
except the VP in my 58503a and second, does anyone know of a source for
an Oncore VP?
Thanks in advance,
Matthew D'Asaro
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