RADIO INTERFERENCE SUPPRESSION

TM 5-3610-254-14

4-12. MOVING TO NEW WORKSITE (cont)

d. Insert appropriate size wooden blocks between shelter skids and side of truck bed.

e. Insert wooden blocks between shelter skids and cab wall.

4-13. RADIO INTERFERENCE SUPPRESSION

DEFINITIONS

a. INTERFERENCE. The term "interference" as used herein applies to electrical disturbances in the radio frequency

range which are generated by the printing plant, special warfare, and which may interfere with the proper operation of

radio receivers or other electronic equipment, or may enable the enemy to locate the equipment.

b. INTERFERENCE SUPPRESSION. The term "interference suppression" as used herein applies to the methods used

to eliminate or effectively reduce radio interference generated by the printing plant.

GENERAL METHODS USED TO ATTAIN PROPER SUPPRESSION

a. Essentially, suppression is attained by providing a low resistance path to ground stray currents. Methods used include

shielding the ignition and high-frequency wires, grounding the frame with bonding straps, and using capacitors and

resistors.

b. The items of equipment which make up the printing plant shelters have been chosen to meet military requirements for

radio interference suppression. All electric motors are either of the brushless type or have built-in suppression features.

The van construction is such that radio interference from the fluorescent lighting or other equipment is greatly attenuated.

REPLACEMENT OF SUPPRESSION COMPONENTS

Refer to the applicable technical publication for removal and installation of suppression components used in the

phototypesetter, film dryer, PMT processor, camera, timer, and air conditioning system.

TESTING OF RADIO INTERFERENCE SUPPRESSION COMPONENTS

Test capacitors for leaks and shorts on a capacitor tester; replace defective capacitors. If test equipment is not available

and interference is indicated, isolate the cause of interference by the trial and error method of replacing each capacitor in

turn until the cause is located and eliminated.

4-12