On Jul 10, 6:36 pm, "Dave Edwards" wrote:
The last of the tube TR4's had 1 khz readout.....and a WHOLE lot more
repeatable, and end to end accurate then the SB102!!

...Dave

Yes. Good point.

I don't own Drake except for a 2B/2BQ that's been in storage for 35
years. Don't know a lot about them, never operated a TR.

Overall though, the SB-102 package, as part of the Heath SB system
which includes several amps, scopes, etc., was the premier 1960s/1970s
set up. The weakness of the SB's was the mechanical build quality
and the mechanical alignment.

Drake PTO vs. Heath LMO is an interesting comparison. My SB-102 is
not seen bench time yet but I've had an SB-303 (same solid state LMO
albeit without the tubes nearby) on a frequency counter for a week.
The drift measured in the few tens of Hz! This was in an un-
airconditioned room.