[Johnson] interstage xfmr

[Edward Zeranski]

I've picked up some interstage transformers with the following markings:

TFRX01YY
Collins NO.
674063500
Freed NO. 25705
P.W.V. 268 V.
Max Alt. 50,000 FT.

The  inspection stamp is dated 8-66. These are small gray cylindrical 
units 7/8" X 1.5"  Does any one know of a source for the specs on these 
guys??

Thanks!

EdZ
San Diego