W1RS, yes I remember the slotted line from Lowry AFB PMEL school late '60s. The HP 715 klystron power supply, and modulator. the HP 430C power meter with bolometer mount, you had to bias it, make sure the bias was off, before you connected the mount (instant Fail). The HP vswr detector and the probe in the slotted line. Early measurements of measuring wavelength, plotting values on the smith chart to calculate impedance and vswr.. Oh, and don't forget to take off your wristwatch. (:-) or you Failed...
This is one of the best threads I've read on Groups.io. Thanks.
wb7ond
