[Test-Equipment] Scala Oscilloscope Probes

[Dale H. Cook]

At 03:46 PM 5/12/2014, Ron wrote:

>The inner wire in most scope probes cables is usually much thinner than a human hair for extremely high surge impedance.

These are not modern probes like Tek, HP, Pomona or Mueller probes of recent decades (which I have owned for decades and use frequently). These are '50s probes intended for use with the 5-6 MHz bandwidth radio-TV service 'scopes of the period. Photos found online uniformly show 'scope cables that appear to be RG-58, and the dielectric and braid exposed at the spade-lug terminals look like RG-58. The fact that they were intended to connect to binding posts for the 'scope vertical input betrays their intended use in the radio-TV service trade. I don't plan to use them, they are just some of the vintage items in my collection of instrumentation and test equipment that I wish to restore.

Dale H. Cook, GR / HP Collector, Roanoke/Lynchburg, VA
http://plymouthcolony.net/starcity/radios/index.html