Section II EQUIPMENT DESCRIPTION - TM-11-5820-670-300013

TM 11-5820-670-30

1-8. SAFETY, CARE, AND HANDLING.

Observe all warnings, cautions and notes in this manual. This equipment can be extremely dangerous

if these instructions are not followed. Ensure the following caution is observed as well.

CAUTION

Receiver-transmitter of radio set is compact and heavy. Use caution when handling it.

Serious damage could result if mishandled and dropped.

Section II EQUIPMENT DESCRIPTION

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Page

Subject

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Equipment Characteristics, Capabilities, and Features . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Differences Between Models/Silicon Versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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1-9. GENERAL.

This section contains overall information about the Radio Set AN/ARC-131. It includes references to

publications that provide detailed equipment description and data, and coverage of major differences

between radio sets. There is only one model of the radio set but functional modules in the receiver-

transmitter may contain either germanium or silicon semiconductors.

1-10. EQUIPMENT CHARACTERISTICS, CAPABILITIES, AND FEATURES.

Equipment characteristics, capabilities, and features of Radio Set AN/ARC-131 and its parts are

found in TM 11-5820-670-12.

1-11. DIFFERENCES BETWEEN MODELS/SILICON VERSIONS.

This paragraph contains information covering redesigned receiver-transmitter (rt) modules using

silicon semiconductors in lieu of germanium devices. Operation of the radio set is not affected by in-

terchange of modules in the receiver-transmitter.

MODULES CONTAINING SILICON SEMICONDUCTORS

Modules equipped with silicon semiconductors are identified by the suffix letter A. For example,

A8100A denotes a silicon version transmitter modulator. The A8100 is the germanium version of the

same module.

It is possible that radios in field might be equipped with a combination of germanium and silicon

modules in the receiver and transmitter sections, as listed below.

Mixer Assembly A1400A

CRS Hunt Discriminator A3600A

Local Oscillator A1500A

CRS Phase Discriminator A3700A

Tuner Power Supply A1600A

Master Oscillator A6300A

Buffer Amplifier A6400A

CRS Oscillators A2000A

Voltage Regulator A2100A

11.5 MHz Modulator A8100A

CRS Harmonic Generator A3100A

First and Second IF. Amps A8300A

Hunt Generator A8400A

CRS Balanced Mixer A3200A

CRS Second Mixer A3300A

CRS First and Second IF. Amps A3400A

CRS Limiter A3500A

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