Comment by jlawrence6809
10 hours ago
I just had claude walk me through refurbishing a Rohde & Schwarz signal generator from the 90s. It feels pretty cool getting a multi thousand dollar piece of equipment for 60 bucks even if you have no idea what you'll use it for.
Was that by any chance the R&S AMIQ that I refurbished in an earlier blog post?
And yes, it's a lot of fun bringing these bargain bin pieces of kit back to life.
My model is an SMIQ03E actually! I've grown quite addicted to going to my local 2nd hand electronics store in recent months scrounging for anything with an rs232 port!
I looked for a SMIQ for quite a while to go along with the AMIQ, but eventually settled for the R&S SFQ TV test transmitter that you can see here: https://tomverbeure.github.io/2026/06/28/Rohde-Schwarz-AMIQ-....
It can be used a vector RF signal generator with I/Q inputs. The only limitation is the reduced input bandwidth.
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