[ARC5] Correction: L-10 Antenna & Type 12

[David Stinson]

I got to my Type-12 docs.
The H-13 "Mash" helocopter did not use the Type-17.
It used a version of the Type 12 that included two
T-11 transmitters, an R-11 190-550 KC receiver and
an A-12 antenna.  No navigation capacity in the 
"by the book" installation.  This is in docs from 1950 to 1958.
So they were still using LF freq towers in Korea.

An interesting aside:  The 1950 Type-12 parts manual has
a diagram of a set that mixes Type-12 and AN/ARC-5
in one installation.  Pretty cool.

D.S.