[R-390] R-390A Cost Reduction and Improvements (was dead horse Hi)

[Robert M. Bratcher Jr.]

At 04:30 PM 6/11/2003 -0500, Cecil Acuff wrote:
>Adapting an R-390\URR IF deck to an R-390A\URR is not at all unrealistic.
>Seems I remember the Military had it done because of the phase shift
>problems the mechanical filters created in diversity operations.  There is a
>military designation for it...I just can't remember it at the moment.
>Someone on this list did the conversion just in the last few months....I
>remember the posts....
>
>Les Locklear...Chime in here anytime I know you have the info on it!
>
>Finding a source for R-390\URR IF decks is the biggest problem! (maybe
>that's what you meant by unrealistic)
>
>Cecil...

It's known as the R-275. I saw one at a hamfest 4 years ago in Irving TX. 
Should have bought it but I didn't think about it at the time...