Hi Mike:
The HP DC semiconductor equipment uses these. They put "guard" on the
interior shield where guard is driven with the same voltge that's on the
center conductor. That way there's no leakage current between the
center conductor and ground allowing very small currents to be measured.
Pomona has adapters from these to ordinary coax. There are two versions
one used 2 lugs (5298)and the other used 3 lugs (5299). See:
<http://www.pomonaelectronics.com/index.php?i=prodsub&parent=RFCONN&cat=TRIAXCONN&getDetails=0>
73,
Brooke Clarke, N6GCE
--
w/Java http://www.PRC68.com
w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml
http://www.precisionclock.com
Mike Feher wrote:
Dave -
Thanks for the informative URL. I have been working for the military one way
or another for almost 40 years and I still do not recall seeing any. Like I
always say "tuition never comes cheap regardless of how you pay for it". So,
even if this project does not ever progress to where I would like it, I will
have learned something, and for that it was worth it. Thanks - Mike
Mike B. Feher, N4FS
89 Arnold Blvd.
Howell, NJ, 07731
732-886-5960
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of David Forbes
Sent: Monday, June 20, 2005 1:15 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] FW: Plugs on the FE 70E
Mike Feher wrote:
Regardless, like I said, this looks like it is going to be a project of
changing out all of the connectors. Attached are a couple of quickly taken
photos, reduced in resolution for quick access. One shows part of the rear
of the distribution amp whit the female sockets and the other the male end
of a terminating connector that came with the set. Seems everything I get
on
ebay turns into a project. I have seen isolated BNCs before, like on
Tektronix scopes, but these are new to me. But who knows, if I look hard
enough in the basement I just may find a bunch of mating sockets. Thanks
Mike,
These triax connectors are made by Trompeter, which was revealed by a
bit of ebay searching. Here's the catalog:
http://www.trompeter.com/assets/product/PDF/T21-Military_Aero.pdf
They describe the history of the connectors in the PDF, if you're
interested. It has a lot to do with MIL 1553B stuff.
PS Pasternack has an amusing reputation around our telescopes - their
SMA adapters fall apart when looked at sideways, so we generally just
toss 'em when we run into them.
PPS Look at the Pasternack website with any browser but IE, and the
text in the menus doesn't render at all! It's impossible to navigate
their site with Netscape, Mozilla, Firefox, Safari, etc.
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