Optoelectronics Frequency Counter Model 7010A - 600 MHz - UNTESTED

DataScan MODEL C1400 10HZ-1..4GHZ FREQUENCY COUNTER * Untested

OPTOELECTRONICS OPTO-7000 FREQUENCY COUNTER - No Power cord

Optoelectronics Frequency Counter 3000A 10hz- 3ghz Dual Input Untested

Lodestar Frequency Counter (FC-5250C 10Hz~200MHz) **USED VINTAGE** Turns On

OptoElectronics Model: FC-50C Frequency Counter Used Working

BK B&K Precision Model 1823A 2.4GHz Universal Frequency Counter PARTS

DIY High Accuracy 1~500MHz Frequency Counter Tester LCD Measurement F/ Ham Radio