[MRCA] bc-1066b

[J. Forster]

> Ludwell Sibley wrote:
> >
> > It's a test set for ground checkout of airborne IFF (identi-
> > fication-friend-or-foe) systems, specifically the Philco-
> > made SCR-695.  Was part of a couple of maintenance
> > kits coded IE-46 and -56.  It's basically a superregenerative
> > receiver that "squegs" at a supersonic frequency and, despite
> > having no antenna, radiates enough signal through the wood
> > case to activate the IFF set on the flight line.  The IFF
> > responds with pulses which are picked up on the BC-1066
> > and run through a two-stage audio amp (the 1D8 tube) to
> > drive headphones.  Battery supply is 1.5 and 135 V.  Freq-
> > uency range is of the order of 157-187 MHz.
> >
> > Ludwell Sibley

The frequency range of the BC-1066-B is not listed in the manual for the IE-46
Test Set (It just refers to I and J Bands)  but it is used with the BC-906-D
Frequency Meter and the AN/APN-2 and AN/PPN-2 (Rebecca & Eureka respectively)
which operate at roughly 220 MHz,  The BC-906-D has a range of 150 to 225 MHz.

-John