[Milsurplus] Ray's mystery box

[Eric Jones]

de N4TGC Eric

Ray's mystery box does sound like an early v. of the ASB (Aircraft, Special,
Bombing) gear.  I have schematics for the ASB-5 and -7, which describe much like
his, except the front end is composed of three 446A 'lighthouse' tubes for RF
amp, 55mc converter, and HF osc., followed by a string of six 6AC7's, the third
of which is a second converter on 16mc (fed by a 6AC7 as 71mc osc); then a 6H6
detector, 6AC7 video amp., and 6AG7 video PA.  The unit was the receiver for a
~400mc radar ranging pair, of which the tx would be an APT-5 or such, using
3C22, more 6AC7's, 829B, 6AG7, and 6LG7 (huh?! - have to look that one up!)

The front might have a power jack in the lower right, tuning gearbox above that;
a couple of spring-loaded covers over other tuning adjustments; a quad of jacks
for sensitivity switch, video in, rcvr out, and rcvr input.  Can't really tell
the size from the illustration in Caringella and Clark's book.

Probably a pretty useless piece of 'looky-here', but probably rare, too!    e