Figure 1-8, Test Set, Transponder Set TS-1843/APX.
The TS1843/APX (fig. 18) is an in-flight
C operation to prepare coded signals, indicating
test set that is used to indicate either satisfac-
aircraft pressure altitude in hundreds of feet,
tory or unsatisfactory performance of the over-
all transponder system on a go, no-go basis.
e. Power Supply. A source of primary power
Refer to manual NAVWEPS 16-35TS1843-
capable of supplying 27.5 vdc at 2.5 amperes or
27.5 vdc at 2.5 amperes and 115 vac at 90 va,
400 ±10% cps is required to operate the power
g. Interconnecting Cables. Interconnecting
supply in the RT-859/APX72. The power is
cables with connectors to mate with the multi-
obtained from the aircraft or surface vessel
pin connector and the rf coaxial connector on
the RT-859/APX-72 are required. These cables
f. Test Set, Transponder Set TS-1843/APX.
are installed as part of the aircraft.
Section Ill. SYSTEM ANALYSIS
positive identification, position, altitude, and
emergency conditions (if they exist) of an air-
The RT-859/APX-72 is an integral part of
craft or surface vessel to an interrogating sta-
a transponder system which is used to present