Table 1-2. Components Included in Radio Receiving Set AN/ARN-123(V)(*)

TM 11-5826-258-24

Table 1-1. Tabulated DataContinued

Low sensitivity

Adjustable from 1000 to 3000 microvolt. Adjusted to 1500 microvolt.

Audio output power

Balanced output which provides 50 milliwatt-s into a 150-ohm external load

operating temperature

-46 C to +55 C.

Storage temperature

-54 C to +71 C.

Warmup time:

Standard temperature conditions

Less than 90 seconds.

Extreme temperature conditions

Less than 3 minutes.

Power input:

Performance

Meets specified performance when operated from a dc primary source with

characteristics and limits as defined in MIL-STD-704 based 6 October 1959,

Category B.

Meets transient conditions as specified in MIL-STD -704 dated 6 October 1959.

Power source transients

Lamp drive

Lamp drive capable of operating single marker beacon light system with total

lamp load range of from 40 to 200 milliamperes at 28 vdc.

Control:

Storage temperature

-54 C to +71 C.

Frequency selection

ARINC Mark 11 (2-out-of-5) per ARINC Characteristic 410.

Frequency range selection

108.00 through 117,95 MHz in 50 kHz steps.

Mechanically positions whole MHz wafer switches and units/tenths MHz fre-

Whole MHz control (left knob)

quency drums simultaneously.

Fractional MHz control (right knob)

Mechanically positions fractional MHz wafer switches and tenths/hundredths

drums simultaneously.

LOC/GS frequency pairing

In accordance with FAA Advisory Circular 170-12.

NAV-VOL-OFF control

Provides power on/off control for VOR/LOC/GS/MB receivers and VOR/LOC

audio output level control.

MB VOL-OFF

Provides an independent MB audio output level control. Provides on/off control

for optional switching of lamp common wire.

VOR/MB-TEST

Activates VOR and MB lamp self-test circuits, (Requires external signal),

MB SENS (HI/LO)

Provides means of controlling MB sensitivity (a ground is provided in HI switch

position).

DME channeling

Separate set of ARINC 2-out-of-5 wires ARINC Mark ii per ARINC Characteristic

410 to control 200 channel DME receiver.

Lighting:

Power requirements

27.5 vdc, 80 milliamperes.

Color

Red (or white, refer to paragraph 1 -8) in accordance with MIL-P- 7778.

GS/LOC energize function

Provides a ground to energize GS/LOC receiver on ILS frequencies

Mounting Base, Electrical Equipment MT-4834/ARN-123(V):

Weight

2.0 lb max.

Dimensions

See table 1-2.

Storage temperature

-54C to +71 C.

Mounting Base, Electrical Equipment MT-4980/ARN-123(V):

Weight

1.05 lb max.

Dimensions

See table 1-2.

-54 C to +71 C.

Storage Instructions

1-14. Items Comprising an Operable

AN/ARN-123(V)(*). Additional items required to com-

Equipment

plete the system are listed in paragraph 1-15.

The items in table 1-2 make up Radio Receiving Set

Table 1-2. Components Included in Radio Receiving Set AN/ARN-123(V)(*)

Change 1

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