Products > Test Equipment
Used spectrum analyzer buyer's guide
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DaJMasta:

--- Quote from: usagi on February 17, 2017, 08:51:18 pm ---looks like the S331D is an antenna analzyer only - only SWR, cable loss, TDR, etc. there is no spectrum analyzer feature in the documentation and there does not appear to be an SA option for the S331D.

--- End quote ---

Looks like you're right, my mistake.  That probably explains the price difference....
cncjerry:
I paid $750 fo my R3131a with TG.  Perfect condition.
Johncanfield:
I've been looking on eBay for a spectrum analyzer for several months,  finding one with a tracking generator for under $2,000 was almost impossible.  Finally I decided to buy a new Siglent,  I bought the tracking generator license and with the EEVblog discount I spent about $1500. Having said that, I love vintage equipment and have some HP and Agilent gear.

Thanks for a great topic and your research efforts.
usagi:
Advantest R3131a User's Manual

image courtesy of sglabs.it


TG is option 74.

Topic: Advantest R3131A Spectrum Analyzer 9KHz-3GHz

xdev: Advantest R3131 SA manuals and photos added
mmagin:
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). 
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