[Milsurplus] Ray's mystery box

[J. Forster]

Could I convince you to scan or copy the documentatio you have on the ASB-5. It's
kinda scarce out here. Reasonable costs willingly paid. If you are willing, please
email me off-list.

Thanks,
-John

Eric Jones wrote:

> 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
>
> ______________________________________________________________
> Milsurplus mailing list
> Home: http://mailman.qth.net/mailman/listinfo/milsurplus
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Milsurplus at mailman.qth.net