Shure 101C, 101E, 102C, 102E, 103 User Guide

222 HARTREY AVE • EVANSTON, ILL • CABLE SHUREMICRO

MICROPHONES AND ELECTRONIC COMPONENTS

EVANSTON PHONE DA-8-9000 • CHICAGO PHONE SH 3-1600

Models 101C; 101E; 102C; 102E; 103

General: Model "100" series Communications type

Microphones are pressure-actuated diaphragm type car­bon microphones designed especially for efficient repro­duction of speech.

The microphones fit naturally and comfortably in the
palm of the hand. They are light and compact, take
minimum space in portable equipment. The sturdy die
cast case has a durable baked enamel finish.

The Model "100" series microphones are equipped
with a heavy-duty, push-to-talk switch and are available
in a variety of switching circuits. (See Figure A). The

Models 101C, 102C and 103 are supplied with a stranded

copper conductor "Coiled-Cord" cable. The Models

101E and 102E are supplied with a tinsel conductor

"Coiled-Cord" cable.

DATA SHEET

MODEL 100 SERIES

CARBON MICROPHONES

Application:

especially designed for military, police, mobile equip­ment, and other uses where ruggedness and depend­ability are vital factors. The frequency response is
designed to produce clear, crisp, voice response.

Model "100" series microphones are

Installation: The microphones are provided with a

bracket for permanent placement in portable or mobile
equipment. The bracket has mounting holes with clear-

ance for No. 6 screws. (See Figure C).

Connection:

connections of Model "100" series microphones are
shown in Figure A. Models 101C, 101E and 103 have a
single pole normally open switch in the relay circuit.

Models 102C and l02E have a double pole normally
open switch to control both the cartridge circuit and the
relay circuit.

Internal switch connection and cable

Operation: A typical operating circuit is shown in

Figure D. Also shown in Figure D is a table of voltages

and corresponding resistances to limit the operating cur­rent through the carbon button to 50 milliamperes. The

resistance value shown in the table includes the D.C.

resistance of the transformer primary and other wiring

components. The microphone will operate satisfactorily

with currents up to 50 milliamperes. However, no dam-

age will result if currents rise to 100 milliamperes. The

resistance of the carbon button is 70 to 100 ohms with 50

milliamperes flowing through button.

The Model "100" series microphone will operate
satisfactorily in all ordinary conditions of temperature
and humidity.

Specification:

volt for 100 microbar signal at microphone grill. Voltage
measured across 100 ohm load.

MODELS 101C; 101E; 102C; 102E; 103

Dimensions..........................

Finish...............................

Net Weight . . . . . . . . . . . . . . . . . . . . . . . .

Shipping Weight . . . . . . . . . . . . . . . . . . . . .

Code Words . . . . . . . . . . . . . . . . . . . . . . . . . 102C — RUCEM

Voltage sensitivity 5 db. below I

See Fig. B.

Baked Enamel

1 lb.

1 lb. 6 oz.

101C — RUCEG
101E — RUCAD

102E — RUCAF
103 — RUCAM

Recommended Load Impedance:

50 to 100 ohms.

Guarantee: Each microphone is guaranteed to be

free from electrical and mechanical defects for a period
of one year from date of shipment from the factory, pro-

vided all instructions are complied with fully. In case of

damage, return the microphone to the factory for repairs.

Our guarantee is voided if the microphone case is

opened.

Copyright, 1953, Shure Brothers, Inc.

27-08 (5-57)

Printed in U.S.A.

FIG A. INTERNAL CONNECTIONS

FIG. A-1

FIG. A-4

Model 100 Series Carbon Communication Hand Microphones

MODEL No.

MODEL 101C:
MODEL 101E:
MODEL 102C:
MODEL 102E: (See Fig. A-3)
MODEL 103:

INTERNAL

CONNECTIONS

(See Fig. A-1) Stranded coil cord.
(See Fig. A-2)
(See Fig. A-3)

(See Fig. A-4) Stranded coil cord with Amphenol MC4M plug (in line keying).

FIG. A-2

FIG. A-5

FIG. A-6

TYPE OF CABLE

Tinsel coil cord with Amphenol MC4M plug (offset keying).
Stranded coil cord.
Tinsel coil cord with spade lugs.

FIG. A-3