Many transconductance testers have multiple switch decks to move each
element around. This represents a number of additional steps, over the
emission tester.

And, I often can get the radio back up and running in 20 minutes - and speed
is important since I do not charge for it.

Chuck no doubt is more thorough than I am - but I am only servicing an old
radio and not a 50 Mhz precision scope. Incidently, one of my close friends
designed many of the circuits in the 585, and single handedly designed the
519 and 130, and I have a row Tek scopes and other Tek equipment.

Colin K7FM