Figure 1-3. Cable Assembly Set, Electrical OA-2494/ARM-45.

TM 11-6625-409-12

AN/ARM-45(*) is furnished by an external 27.5-volt direct

power receptacle (not shown) i located on the rear of the

current (dc) source (para 1-15a).

remote control unit. The 614U-6 provides for the control.

and tuning o Transmitter 17L-7A and Receiver 51X-2B

when testing the AN/ARC-73 (para 2-9). Radio Set

1-11.

Description of Test Set Subassembly MX-

Control 614U-5 is used when testing the AN/ARC-73A.

3736/ ARM-45

Refer to TM 11-5821-217-12 for comparative

descriptions of the 614U-6 and 614U 5.

The MX-3736/ARM-45 contains the controls, jacks,

indicators, test cable receptacles, radio frequency (rf)

1-13. Description of Cable Assembly Set

dummy load, and cable assemblies required to perform

Electrical OA-2494/ ARM45

operational tests of the AN/ARC-73 or AN/ARC-73A.

The test cable receptacles (fig. 2-4) are located on a

The OA-2494/ARM-45 consists of eight cable., used for

shelf mounted inside the metal case. The receptacles

extending the electronic modules in Transmitter 17L-7A

are protected by hinged covers. The case of the MX-

and Receiver 51X-2B from their respective chassis when

3736/ARM-45 is equipped with carrying handles and a

troubleshooting the AN/ARC-73 and AN/ARC-73A. Five

removable hinged cover.

module extension cables are provided for use with the

17L-7A; three are provided for use with the 51X. 2B.

1-12. Description of Radio Set Controls 614U-6

and 614U-5

(fig. 2-3 and 2-5).

Radio Set Control 614U-6 (remote control unit) is located

on the front panel of the MX-3736/ARM-45 and is

secured by four mounting screws.

A control and

Figure 1-3. Cable Assembly Set, Electrical OA-2494/ARM-45.

22-conductor cable assembly that is used to connect the

1-14. Description of Test Cable Assemblies (fig. 1-

MX-3736/ARM-45 to either the 17L-7A or to the 17L-7A

1).

section in Dual Shockmount

a. Cable No. 1. Cable No. 1 is a 7-foot 6-inch,

1-4