Hello all,
I just purchased this 3440A RF multimeter complete with 2 sets of 50 ohm RF probes and two 100:1 50 ohm T adaptors.
After calibration from Ballantine back in September 1989 it has been in a box until last week when I pulled it out and plugged it in.
As far as I can tell it STILL WORKS and it looks brand new !
Doing a quick search for a user's manual yielded zip so hopefully someone out there might have one for this beauty ?