I happened to obtain a copy of the Bell X-1A/B/D
Pilots handbook today. As photos I have seen of the X-1 show, it
was equipped with ARC-5 VHF equipment consisting of an R-28 receiver,
an T-23 transmitter, and an MD-7 modulator.
It was also equipped with an APN-60 radar
transponder operating in S-Band.
The X-1A was a development of the original X-1
that broke the sound barrier, with a stretched fuselage and with
a more conventional cockpit canopy.
Wayne
WB5WSV
