book?read? TM 11-310 Schematic Diagrams for Maintenance of Ground Radio Communication Sets 1943:

TM 11-310 Schematic Diagrams for Maintenance of Ground
Radio Communication Sets 1943: General Maintenance
Procedure Tabulation Of Common Radio Symbols Metric
Prefixe
Description :
SCHEMATIC DIAGRAMS FOR MAINTENANCE OF GROUND RADIO

COMMUNICATION SETS WAR DEPARTMENT &#8226OCTOBER 1943
Dissemination of restricted matter. The information contained in
restricted documents and the essential characteristics of restricted
material may be given to any person known to be in the service of
the United States and to persons of un- doubted loyalty and
discretion who are cooperating in Government work, but will not be
communicated to the public or to the press except by authorized
Military public relations agencies. (See also par. 18i, AR
380&#82125 28 Sep 1942.). TECHNICAL MANUAL SCHEMATIC
DIAGRAMS FOR MAINTENANCE OF GROUND RADIO
COMMUNICATION SETS TM 11-310, 25 October 1943, is changed as
follows: 1. The information contained in this change is an addition to
TM 11-310. 2. Insert these pages according to the following
instructions: a. Remove from TM 11-310, Issue No. 1, pages iii and
iv, and destroy. b. Insert Issue No. 2, pages II, III, IV, and-V of this
change, in TM 11-310. c. Insert maintenance sheets of this change
to agree with the order in Section II of Table of Contents, Issu^ No.
2, pages. M 11-310, 25 October 1943, is changed as follows: 1. The
information contained in this change is an addition to TM 11-310. 2.
Insert these pages according to the following instructions: a.
Remove from TM 11-310, Issue No. 2, pages III, IV, and V and
destroy. b. Insert Issue No. 3, pages III, IV, V, and VI of this
change, in TM 11-310. c. Insert maintenance sheets of this change
to agree with the order in Section II of Table of Contents, Issue No.
3, pages V. SCHEMATIC DIAGRAMS FOR MAINTENANCE OF GROUND
RADIO COMMUNICATION SETS This manual contains a condensation
of informa- tion for the maintenance of Signal Corps ground radio
communication sets. It is presented as a sup- plement to the
information given in various technical manuals of the TM 11- series
for particular sets. The manual is in loose-leaf form, so that
additional sheets or revisions of old sheets can be added. The
material is divided into two sections : Section I contains reference
data which should be of value to all maintenance personnel. The lists
of radio symbols and special abbreviations in this section are those
used in all diagrams in section II of the manual. Section II is made
up of maintenance sheets on particular units of radio equipment.
The sheets are arranged numerically by RC-, PE-, and SCR-, etc,
numbers. For example, Radio Set SCR-510-A consists of Radio
Transmitter and Receiver BC- 620-A and Plate Supply Unit PE-97-A.
Informa- tion on the complete radio set is found under SCR-510-(*).
(The symbol (*) is used to denote equipments which bear different
suffix letters, such as SCR-510-A, 510-B, etc., but which are so

similar that one set of maintenance sheets covers them. ) Changes,
which are issued at frequent, intervals, include additional listings.
Any necessary revi- sions of previously published sheets are
included in such changes. A new master table of contents Is issued
with each supplement to replace the old table. Modifications which
will prevent equipment from being readily converted hack to
standard character- istics will not be made without authority of the
Chief Signal Officer or the Commanding General of a theater of
operations. The time between requests for repair and com- pliance
or replacement of item, if necessary, should be minimised.