Restoring an HP 521A Frequency Counter: Part 3 – Victory!
Restoring an HP 521A Frequency Counter: Part 2
Restoring an HP 521A Frequency Counter: Part 1
HP 5245L Nixie Counter - Part 3: 500 MHz Plugin Repair (HP 5253A and HP 5253B)
HP Hewlett Packard 521A frequency counter from 1955
HP 5512-A Counter
#257 HP 5245M Frequency Counter from 1967 - Restore Teardown
HP 5245L Nixie Counter - Part 7: HP 5264 Preset, HP 5262 Time Interval, HP 5257 Transfer Oscillator
Tune up of a HP 5245L Frequency counter
HP 5245L Frequency Counter from the junk pile (nixie tubes), inspection and test
HP 5221B
Hewlett Packard Model 521AR Vintage Frequency Counter
Vintage HP 5245L Electronic Counter with 5253B Frequency Converter
HP 5342A Microwave Frequency Counter upgrade and we fire up the Cesium clock to calibrate it!
TGT - HP 5221A Frequency Counter
Restoring an HP 150A Oscilloscope (Part 2)
Vintage Hewlett Packard HP 523DR Vacuum Tube Electronic Counter.MOV
HP 522B counting
HP 3300A Vintage Function Generator Repair
Our bun Kono learning about stick size
