Counters

HP 53181A Universal Frequency Counter, 1.5 GHzIn good condition, guarantee working.14 Day Right-to-Return, 60 Day Warranty.

Agilent 53131A Universal Frequency Counter, 10 digit/sec, Two 225 MHz input channels, w/ opt 124 (Add 12.4 GHz Channel 3 (N connector) to standard 225 MHz Channels 1 and 2)...

Agilent 5361B Pulse/CW Microwave Counter, 20GHz In good condition, pass self test, guarantee working. 14 Day Right-to-Return, 60 Day Warranty. 

Agilent 5351B Microwave Frequency Counter 26.5GHz Opt 006 In good condition, pass self test, guarantee working. 14 Day Right-to-Return, 60 Day Warranty. 

HP 53131A Universal Frequency Counter, 10 digit/sec, Two 225 MHz input channels, w/ opt 030 (Add 3.0 GHz Channel 3 to standard 225 MHz Channels 1 and 2) In good...