[time-nuts] Flood of low end priced VNAs on FleeBay

Robert Benward rbenward at verizon.net
Wed Jun 2 17:05:58 UTC 2010

I've "fix" a few pieces of HP equipment simply by re-seating all the PCBs. 
After all the years, sometimes not in the best humidity environment, those 
contacts can become intermittant.  Re-seating will "wipe" all the contact 
surfaces restoring continuity.


----- Original Message ----- 
From: "jimlux" <jimlux at earthlink.net>
To: "Discussion of precise time and frequency measurement" 
<time-nuts at febo.com>
Sent: Wednesday, June 02, 2010 9:12 AM
Subject: Re: [time-nuts] Flood of low end priced VNAs on FleeBay

> Steve Rooke wrote:
>> Just noticed there is a flood of lower end priced (<$5k & <<$5k) VNAs
>> on FleeBay just in case anyone is looking for one. No need to thank
>> me, just buy me one as well :)
>> Steve
> Interesting... be aware that a lot of those 8510s aren't the whole
> analyzer, just the display or RF section, without the source (sweeper).
> ANd not just any sweeper will do.. you need one that the 8510 can
> control over GPIB and that has the right sync in and out.
> A full 8510 has 3 or 4 boxes (depending on whether it has the
> s-parameter test set).  And, they're getting mighty long in tooth and
> tricky to fix.  I've got a cranky one at work that locks up
> occasionally, and we've been trying to figure out why.
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