I have here the HP 8713C RF Network Analyzer, runs 300KHz - 3GHz and 50 Ohms.
I got this and the Keypad was worn out so I replaced it. Has been a very nice instrument and is very fast and easy to use.
I did use it mainly for radio work tuning resonant structures. The measurement can be viewed in dbm loss or VSWR which ever you prefer.
It is super useful for anyone doing repeater work and needing to align the cavities. Waveforms can be saved and overlaid like transmit and receive cavities and be able to see them as they are overlapped.
There is extensive wear on the cabinet and trim bit has no bearing on the performance of this work horse.
The pictures show Reflection and Transmission loss. zoom in for clarity.
I have discounted the price heavily based upon the cosmetic wear.
I have retired and down sizing, so got to find a new home.
Keywords: Test Set, Radio, Ham, Repeater, Analyzer, transmiter, receiver