DEPARTMENT OF THE ARMY TECHNICAL BULLETIN

DEPARTMENT OF THE ARMY TECHNICAL BULLETIN

CALIBRATION PROCEDURE

FOR

RADIO TEST SETS, (6625-00-892-5542)

AN/VRM-1 AND AN/VRM-1A

Headquarters, Department of the Army, Washington, D. C.

12 August 1975

Page

Paragraph

GENERAL

Purpose and scope

Reporting of publication improvements

Description

General instructions

Difference among models

CALIBRATION

Equipment and accessories required

Preliminary procedure

Power test

Voltage sensing circuit

Dc circuits

Audio circuits

RF circuits

Final procedure

Section I. GENERAL

1. Purpose and Scope.

a. This bulletin provides information for the pe-

riodic calibration of Radio Test Set AN/VRM-l,

AN/VRM-lA (fig. 1) and is used by calibration

personnel. Since maintenance calibration personnel

are trained and qualified in the usage of test and

measuring equipment, detailed instructions con-

cerning the operation and use of these equipments

are not contained in this bulletin.

b. Integrated within this bulletin are illustrations

delineating the location of all controls and com-

ponents utilized in this calibration procedure as well

as diagrams showing equipment setups. Equipment

ground connections are not necessarily shown in

the diagrams.

Figure 1. Radio Test Set AN/VRM-1 -- front panel view.

*This bulletin supersedes TB 11-6625-496-35/1, 15 May 1969