[time-nuts] VNA design

[paul swed]

Boy this is not time-nuts and I had been deleting the thread. No problem
with the thread. Just I have HP VNAs. Yes including what caught my eye the
8410 that Scott spoke of and its still operational. Heavy as heck like real
equipment should be.
I am curious I sort of thought the 8410 was pre micro processor and yet
some how the HP85 hooked up to it??

I have the 8757 also so. Great comment by Dave on the fact that someone
will give out some of the old options. Now I have to figure out what on
earth that might actually mean.
Regards
Paul
WB8TSL


On Tue, Jun 3, 2014 at 12:57 PM, Dr. David Kirkby <drkirkby at gmail.com>
wrote:

> On 3 June 2014 16:54, Scott McGrath <scmcgrath at gmail.com> wrote:
>
> > Where are the software options for the 8753 coming from.  Agilent will
> not even talk about a VNA that's older than the PNA series
>
> This has been discussed on the HP/Agilent mailing list. Basically a
> couple of people that work at Agilent, one of whom is
> "caesarv at email.com" (yes email, not gmail), will give out options for
> 8753 for non-commercial use. Just send him your S/N. I know he also
> did likewise for an older 8720 instrument (I think 8720C).
>
> Although he can, he will NOT do it for PNAs. That is one advantage of
> getting a used 8753/8720 over a used PNA!
>
> Agilent offered to repair my 8720D a couple of years ago, and managed
> to give me a quote via email as it was abundantly obvious what the
> problem was - a damaged thread on a test port connector. The only
> problem was they wanted to change the whole coupler, so it was going
> to cost the US equivalent of around $5000. A mate of mine sorted out
> the nick on the thread with a needle file!!!
>
> Dave
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