FM 24-18: Radio Communication | T.REX ARMS Field Manual Vault

FM 24-18 Radio Communication

Older edition:

FM 24-18

Radio Communication

Army · FM · Jan 1944 · 62 pages

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(Cle GUPA IBIS 2 TRANSMISSION AND RECEPTION OF RADIO WAVES SECTION I FUNDAMENTALS OF RADIO WAVE PROPAGATION 3. ELEMENTS OF RADIO TRANSMISSION. A pebble dropped into a quiet pool of water will create an action similar to the action of radio waves. The energy of the pebble striking the water will be distributed to all parts of the pool by waves which emanate in circles from the spot where the pebble entered. Radio waves from a vertical antenna act in much the same manner. However, radio waves not only travel along the surface of the ground, but go skyward at an angle with the ground. Other types of antenna may send more of the energy in one direction than in another, but the action and performance of the radio waves will otherwise be the same. The characteristics of a radio wave are as follows: a.

DesignationFM 24-18

EditionJan 1944

StatusSuperseded

Pages62

FunctionComms Signal

CollectionHistoric

Public domain (U.S. Government work)

Editions 2

References 18

FM 24-10Not in the Vault
FM 24-9Not in the Vault
FM 11-5Not in the Vault
FM 24-13Not in the Vault
TM 11Not in the Vault