AN/GRC-144(V)4 Waveguide Switch Status Indications

TM 11-5820-695-35

AN/GRC-144(V)4 Waveguide Switch Status Indications

waveguide switch terminal B to relay 1A15AlBK4 is

c. AN/GRC-144(V)4, K-Band Only (Optional

open circuit and relay K4 is not energized. In the

Configuration).

In this configuration, only one

antenna position, +28 Vdc is connected through the

waveguide switch is required; its positions are antenna

waveguide switch to 3A7J2-G and -R. The signal at

and dummy load. Figure 2-31 is a simplified schematic

3A7J2-G lights the K-band indicator (green) at STATUS

diagram of the connections. The waveguide switch is

PANEL 3A8. The signal at 3A7J2-R is applied to relay

shown in the dummy load position. In this position, +28

1A15A18K4 which is then energized. The chart above

Vdc is connected through the waveguide switch to

shows the STATUS PANEL indications and the

3A7J2-H to light the K-band (14.4 to 15.0) indicator

corresponding status-of relay 1A15A18K4 for both

(white) at STATUS PANEL 3A8. Connector 3A7J2-V

positions of the waveguide switch.

applies +28 Vdc constantly (not switched) to the C-band

(4.4 to 5.0) indicator (white) which is then always lighted

white in this configuration.

The connection from

Change 6 2-122