Products > Test Equipment

Used spectrum analyzer buyer's guide

<< < (7/13) > >>

cncjerry:
The display bezel started to turn yellow on my R3131A and I let it sit in hydrogen peroxide in the sun for a few hours and it cleared it all up.  Nice and white now.

That analyzer is really nice by the way.  It doesn't have the noise levels, SFDR, etc, etc, etc of my HP 8568 or 8566 but the integration with the TG really works well.  The other thing is the RBW I think only goes down to 300hz but again, works well within the specs.

The guy I bought mine from, really nice guy by the way, had two of them and wanted $2,500 each.  I kept bugging him over a year, we became email friends, and finally he parted with it for $750. I have to change my battery before it runs out and I lose my features including the TG but I can't get the damn thing apart.  I know it sounds silly, but there is something hung-up in it preventing the back cover from being removed.

Highly recommended for anything under 1k with the TG and under $750 without.  My 8568B though blows its doors off up to 1.8G but the 3131A goes to 3G with very predictable results.


By the way, we have needed this thread for a while.  I had also suggested some type of common plot output should be added for each to give people a view of what you get for the money.  Something simple like just the lowest RBW VBW of the calibrate signal at a common span for instance.

innkeeper:

--- Quote from: usagi on February 17, 2017, 02:56:18 am ---
--- Quote from: innkeeper on February 17, 2017, 02:51:40 am ---HP 8650A 50hz-2.9ghz can be had very often in the $400 dollar range without the tracking generator.

--- End quote ---

i dont see any ebay auctions for hp 8650a. can you find any? if any are sold anymore, it looks extremely rare.

--- End quote ---

OOPS! I meant hp 8560a

nctnico:

--- Quote from: cncjerry on February 18, 2017, 04:55:08 am ---The display bezel started to turn yellow on my R3131A and I let it sit in hydrogen peroxide in the sun for a few hours and it cleared it all up.  Nice and white now.
I have to change my battery before it runs out and I lose my features including the TG but I can't get the damn thing apart.  I know it sounds silly, but there is something hung-up in it preventing the back cover from being removed.

--- End quote ---
You have to remove the screws/bolts for the connectors as well.

usagi:

--- Quote from: mmagin on February 18, 2017, 03:32:14 am ---HP 8562A   
range 1 KHz - 22 GHz (plus reasonably easy to find 11971 external mixers)
span zero, 2.5 Khz to full (but broken into a low and high band at 2.75 GHz)
RBW 100 Hz to 1 MHz
$1-2k in good condition.

Resolution bandwidth doesn't go as low as the rackmount beasts of the era, but is portable (in a 1980s sense).

--- End quote ---

added. congratulations you now own stewardship of this entry.  8)

usagi:
GW Instek GSP-810 Product Page

Very cheap. Currently (Feb 19 2017) lots on ebay, apparently ITT bankruptcy surplus.

Navigation

[0] Message Index

[#] Next page

[*] Previous page

There was an error while thanking
Thanking...
Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod