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

J. Forster jfor at quik.com
Wed Jun 2 12:21:04 EDT 2010


VNAs are very expensive toys. I have an HP 8753 and was just outbid on a 6
GHz source assembly.  :((

Mine has a very complex multi-chip RF Hybrid that has a partial failure,
so it only goes to 3 GHz. That's a serious problem with modern high-end
microwave gear, if anything dies, you're prettry much screwed.

FWIW,

-John

==============


> We have a bunch of sweepers at work, and many of the them have
> died and can't be fixed.  The only way they can be repaired is
> to cannibalize one to fix another, assuming they don't have
> the same bad module.  We have given away an 8510 to a school
> and have others gathering dust.
>
> Rick
>
> jimlux wrote:
>> 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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