Shure ALM User manual

MODEL NUMBER CONNECTOR

ALM CORD DATA SHEETS

ALM Cords
Shure ALM cords use a common connector and wiring configuration on the

microphone end, with varying connectors and wiring configurations on the radio
end. The most basic configuration is model ALM-1, which has no connector on
the radio end.

Some ALM cord models are made by taking an ALM-1 and adding a connector on
the radio end. Depending on the radio involved, the connector:

– may have been a commercially-available part
– may have been assembled by Shure from commercially-available

parts
– may have been a custom part obtained directly from the radio

manufacturer, or
– may have been custom-manufactured by Shure or a contracted

vendor according to the radio manufacturer’s specifications.

This means that replacement connectors may or may not be readily available, or
may not be available under a single part number.

In some cases, the radio-end connector is molded onto the cable. This is usually
done by sending ALM-1 cords to the connector vendor and having them assemble
and mold the connector. These connectors are generally not repairable or
replaceable without the necessary tooling and machinery. This has been noted on
the cord data sheet where applicable.

Instruction Tags
Some ALM cords are shipped with an instruction tag attached, which contains

information on required modifications to the microphone or radio that apply in
certain situations. Note that the same instruction tag often ships with more than
one ALM cord.

GENERAL

SPECIFCATIONS

FOR ALM CORDS

GENERAL SPECIFICATIONS:

1. DESCRIPTION

FIVE-CONDUCTOR, ONE CONDUCTOR SHIELDED, ONE DRAIN WIRE MICROPHONE CABLE

2. OUTER JACKET

BLACK NEOPRENE
OVERALL DIAMETER (INCHES) .195 +/- .010

3. CONDUCTORS

1. FOUR UNSHIELDED CONDUCTORS

1. COLOR CODE

YELLOW, BLUE, RED, AND BLACK

2. MATERIAL

STRANDED TINNED COPPER WIRE CINSISTING OF 7 STRANDS OF #34 AWG WIRE

3. INSULATION

POLYPROPYLENE TO A DIAMETER OF .035 NOMINAL

2. ONE SHIELDED CONDUCTOR

1. COLOR CODE

WHITE

2. MATERIAL

STRANDED TINNED COPPER WIRE CINSISTING OF 7 STRANDS OF #34 AWG WIRE

3. SHIELD

#38 AWG TINNED COPPER WIRE WOUND OVER WHITE CONDUCTOR ONLY

3. DRAIN WIRE

#22 AWG (26 STRANDS OF #36 AWG TINNED SOFT COPPER)

4. INNER CABLE COVERING

MYLAR SPIRAL WRAP

4. CONNECTOR (MICROPHONE END)

1. SIX-PIN MODULAR RJ-11 PLUG, WITH NEOPRENE FLEX RELIEF BOOT (Note: Data sheets for
many Shure Modulink communications microphones show an 8-pin connector in the microphone,
but only the middle 6 pins are used.)

2. WIRING SCHEME

PIN 1 = RED
PIN 2 = YELLOW
PIN 3 = BLUE
PIN 4 = BLACK
PIN 5 = WHITE
PIN 6 = DRAIN

(#26 TOTAL GAUGE)

(#26 TOTAL GAUGE)

MODEL NUMBER CONNECTOR

RADIO END:

BARE WIRES

ALM-1

~ 6 FEET EXTENDED

UNTERMINATED

MICROPHONE END:
6-PIN MODULAR RJ-11 PLUG
WITH NEOPRENE FLEX RELIEF

LENGTH:

STANDARD MICROPHONE-END CONNECTOR WIRING

AND WIRE FUNCTIONS FOR ALL MODULINK CABLES

(LOCKING TAB ON REVERSE SIDE)

RED AMPLIFIED AUDIO OUTPUT, AND

DC BIAS VOLTAGE INPUT

WHITE NON-AMPLIFIED AUDIO OUTPUT

YELLOW PTT SWITCH

BLACK PTT SWITCH GROUND

BLUE HANG-UP BUTTON

DRAIN GROUND

MODEL NUMBER CONNECTOR

ALM-2

CONNECTOR WIRING AT RADIO END

CONNECTOR TYPE: MOTOROLA RIGHT-ANGLE 5-PIN

MOLDED RECTANGULAR PLUG

NOTE: THIS CONNECTOR IS ASSEMBLED FROM
MOTOROLA COMPONENTS, AND THEN HAS A FLEX
RELIEF MOLDED OVER IT. CONNECTOR ASSEMBLY
REQUIRES SPECIAL EQUIPMENT.

CONNECTOR SHELL: MOTOROLA #14-84590B01
TERMINALS: MOTOROLA #09-84151B03

(5 req’d)

S-HOOK AND CLAMP: MOTOROLA #42A-893647

5-PIN MOLDED

RECTANGULAR

CONNECTOR WIRING DETAIL

STANDARD MICROPHONE-END CONNECTOR WIRING

AND WIRE FUNCTIONS FOR ALL MODULINK CABLES

INSTRUCTION TAG

IMPORTANT INFORMATION!

CABLE AND CONNECTOR ASSEMBLY FOR

MODEL 590T, 885TT, AND 890TT

MICROPHONES

When using with 885TT or 890TT microphones,
rewire radio for continuous microphone biasing.
Refer to radio manufacturer’s service manual for
additional information.

29A2127

RED AMPLIFIED AUDIO OUTPUT, AND

DC BIAS VOLTAGE INPUT

WHITE NON-AMPLIFIED AUDIO OUTPUT

YELLOW PTT SWITCH

BLACK PTT SWITCH GROUND

BLUE HANG-UP BUTTON

DRAIN GROUND

(LOCKING TAB ON REVERSE SIDE)

MODEL NUMBER CONNECTOR

ALM-3

CONNECTOR WIRING AT RADIO END

CONNECTOR TYPE: RJ-45 MODULAR 6-PIN

CONNECTOR PIN ASSIGNMENTS:

PIN 1 BLUE
PIN 2 NO CONNECTION (WHITE LEAD OCCUPYING

SLOT – NO CONTACT USED)
PIN 3 YELLOW
PIN 4 RED
PIN 5 BLACK
PIN 6 DRAIN

MODULAR 6-PIN

STANDARD MICROPHONE-END CONNECTOR WIRING

AND WIRE FUNCTIONS FOR ALL MODULINK CABLES

(LOCKING TAB ON REVERSE SIDE)

RED AMPLIFIED AUDIO OUTPUT, AND

DC BIAS VOLTAGE INPUT

WHITE NON-AMPLIFIED AUDIO OUTPUT

YELLOW PTT SWITCH

BLACK PTT SWITCH GROUND

BLUE HANG-UP BUTTON

DRAIN GROUND

MODEL NUMBER CONNECTOR

ALM-4

CONNECTOR WIRING AT RADIO END

CONNECTOR TYPE: 5-PIN ROUND PLUG

(SWITCHCRAFT PART SL-40-5M)

NOTE: COUPLING RING AND
INSULATOR (MANUFACTURED
BY SHURE) ALSO REQUIRED

CONNECTOR PIN ASSIGNMENTS:

PIN 1 BLACK
PIN 2 DRAIN
PIN 3 RED
PIN 4 YELLOW
PIN 5 NO CONNECTION

WHITE AND BLUE CONDUCTORS NOT USED

5-PIN ROUND PLUG

CONNECTOR

END VIEW

STANDARD MICROPHONE-END CONNECTOR WIRING

AND WIRE FUNCTIONS FOR ALL MODULINK CABLES

(LOCKING TAB ON REVERSE SIDE)

CONNECTOR SIDE VIEW

RED AMPLIFIED AUDIO OUTPUT, AND

DC BIAS VOLTAGE INPUT

WHITE NON-AMPLIFIED AUDIO OUTPUT

YELLOW PTT SWITCH

BLACK PTT SWITCH GROUND

BLUE HANG-UP BUTTON

DRAIN GROUND

MODEL NUMBER CONNECTOR

ALM-5

CONNECTOR WIRING AT RADIO END

CONNECTOR TYPE: 4-SOCKET ROUND PLUG (FUJI

SEIMITSU PART FM14-4P)

CONNECTOR PIN ASSIGNMENTS:

PIN 1 RED
PIN 2 BLACK & DRAIN
PIN 3 NO CONNECTION
PIN 4 YELLOW

WHITE AND BLUE CONDUCTORS NOT USED

4-PIN ROUND PLUG

STANDARD MICROPHONE-END CONNECTOR WIRING

AND WIRE FUNCTIONS FOR ALL MODULINK CABLES

(LOCKING TAB ON REVERSE SIDE)

INSTRUCTION TAG

IMPORTANT INFORMATION!

CABLE AND CONNECTOR ASSEMBLY FOR

MODEL 590T, 885TT, AND 890TT

MICROPHONES

Change 270 ohm bias resistor in radio to 1200
ohms. Refer to Midland Service Manual for part
location.

29B2127

RED AMPLIFIED AUDIO OUTPUT, AND

DC BIAS VOLTAGE INPUT

WHITE NON-AMPLIFIED AUDIO OUTPUT

YELLOW PTT SWITCH

BLACK PTT SWITCH GROUND

BLUE HANG-UP BUTTON

DRAIN GROUND

MODEL NUMBER CONNECTOR

ALM-6

CONNECTOR WIRING AT RADIO END

CONNECTOR TYPE: 5-PIN ROUND PLUG

(SWITCHCRAFT PART# 12CL5M)

CONNECTOR PIN ASSIGNMENTS:

PIN 1 RED
PIN 2 YELLOW
PIN 3 DRAIN & BLACK
PIN 4 BLUE
PIN 5 NO CONNECTION

WHITE CONDUCTOR NOT USED

5-PIN ROUND PLUG

STANDARD MICROPHONE-END CONNECTOR WIRING

AND WIRE FUNCTIONS FOR ALL MODULINK CABLES

(LOCKING TAB ON REVERSE SIDE)

INSTRUCTION TAG

29C2127

INCLUDED WITH CABLE

(could not be located)

RED AMPLIFIED AUDIO OUTPUT, AND

DC BIAS VOLTAGE INPUT

WHITE NON-AMPLIFIED AUDIO OUTPUT

YELLOW PTT SWITCH

BLACK PTT SWITCH GROUND

BLUE HANG-UP BUTTON

DRAIN GROUND

MODEL NUMBER CONNECTOR

ALM-8

CONNECTOR WIRING AT RADIO END

CONNECTOR TYPE: RJ-45 MODULAR 8-PIN

CONNECTOR PIN ASSIGNMENTS:

PIN 1 NO CONNECTION (WHITE LEAD OCCUPYING

SLOT; NO CONTACT USED)
PIN 2 DRAIN
PIN 3 RED
PIN 4 BLUE
PIN 5 YELLOW
PIN 6 NO CONNECTION (BLACK LEAD OCCUPYING

SLOT; NO CONTACT USED)
PIN 7 NO CONNECTION (NO CONTACT USED)
PIN 8 NO CONNECTION (NO CONTACT USED)

MODULAR 8-PIN

CONNECTOR WIRING DETAIL

(LOCKING TAB ON REVERSE SIDE)

STANDARD MICROPHONE-END CONNECTOR WIRING

AND WIRE FUNCTIONS FOR ALL MODULINK CABLES

RED AMPLIFIED AUDIO OUTPUT, AND

WHITE NON-AMPLIFIED AUDIO OUTPUT

YELLOW PTT SWITCH

BLACK PTT SWITCH GROUND

BLUE HANG-UP BUTTON

DRAIN GROUND

DC BIAS VOLTAGE INPUT

(LOCKING TAB ON REVERSE SIDE)

MODEL NUMBER CONNECTOR

ALM-10

CONNECTOR WIRING AT RADIO END

CONNECTOR TYPE: FLAT PC HEADER

8-PIN MOLEX #2139
(CONNECTOR HOUSING AND
PINS SOLD SEPERATELY)

CONNECTOR PIN ASSIGNMENTS:

PIN 1 BLACK
PIN 2 YELLOW
PIN 3 DRAIN & BLUE
PIN 4 RED
PIN 5 NO CONNECTION
PIN 6 NO CONNECTION
PIN 7 NO CONNECTION
PIN 8 NO CONNECTION

WHITE CONDUCTOR NOT USED

FLAT PC HEADER

CONNECTOR WIRING DETAIL

STANDARD MICROPHONE-END CONNECTOR WIRING

AND WIRE FUNCTIONS FOR ALL MODULINK CABLES

APPROXIMATE CABLE TERMINATION

RED AMPLIFIED AUDIO OUTPUT, AND

DC BIAS VOLTAGE INPUT

WHITE NON-AMPLIFIED AUDIO OUTPUT

YELLOW PTT SWITCH

BLACK PTT SWITCH GROUND

BLUE HANG-UP BUTTON

DRAIN GROUND

(LOCKING TAB ON REVERSE SIDE)

MODEL NUMBER CONNECTOR

ALM-11

CONNECTOR WIRING AT RADIO END

CONNECTOR TYPE: FLAT PC HEADER

8-PIN MOLEX #2139
(CONNECTOR HOUSING AND
PINS SOLD SEPERATELY)

CONNECTOR PIN ASSIGNMENTS:

PIN 1 NO CONNECTION
PIN 2 YELLOW
PIN 3 BLACK
PIN 4 RED
PIN 5 DRAIN & BLUE
PIN 6 NO CONNECTION
PIN 7 NO CONNECTION
PIN 8 NO CONNECTION

WHITE CONDUCTOR NOT USED

FLAT PC HEADER

CONNECTOR WIRING DETAIL

STANDARD MICROPHONE-END CONNECTOR WIRING

AND WIRE FUNCTIONS FOR ALL MODULINK CABLES

APPROXIMATE CABLE TERMINATION

RED AMPLIFIED AUDIO OUTPUT, AND

DC BIAS VOLTAGE INPUT

WHITE NON-AMPLIFIED AUDIO OUTPUT

YELLOW PTT SWITCH

BLACK PTT SWITCH GROUND

BLUE HANG-UP BUTTON

DRAIN GROUND

(LOCKING TAB ON REVERSE SIDE)

MODEL NUMBER CONNECTOR

ALM-12A

CONNECTOR WIRING AT RADIO END

CONNECTOR TYPE: 5-PIN ROUND PLUG

(SWITCHCRAFT PART# 12CL5M)

CONNECTOR PIN ASSIGNMENTS:

PIN 1 RED
PIN 2 DRAIN & BLACK
PIN 3 YELLOW
PIN 4 WHITE
PIN 5 BLUE

5-PIN ROUND PLUG

STANDARD MICROPHONE-END CONNECTOR WIRING

AND WIRE FUNCTIONS FOR ALL MODULINK CABLES

(LOCKING TAB ON REVERSE SIDE)

INSTRUCTION TAG

IMPORTANT INFORMATION!

CABLE AND CONNECTOR ASSEMBLY FOR

MODEL 590T, 885TT, AND 890TT

MICROPHONES

When using early production 885TT or 890TT
microphones, red jumper from D-E (W301) must be
removed. In later production units, the red jumper
D-E (W301) is moved to location F-G (W309), per
data sheet instructions. (No modification required
for Model 590T microphone.)

29F2127

RED AMPLIFIED AUDIO OUTPUT, AND

DC BIAS VOLTAGE INPUT

WHITE NON-AMPLIFIED AUDIO OUTPUT

YELLOW PTT SWITCH

BLACK PTT SWITCH GROUND

BLUE HANG-UP BUTTON

DRAIN GROUND

MODEL NUMBER CONNECTOR

ALM-16

CONNECTOR WIRING AT RADIO END

CONNECTOR TYPE: 5-PIN ROUND PLUG

(SWITCHCRAFT PART# 12CL5M)

CONNECTOR PIN ASSIGNMENTS:

PIN 1 WHITE
PIN 2 YELLOW
PIN 3 DRAIN & BLACK
PIN 4 BLUE
PIN 5 RED

5-PIN ROUND PLUG

INSTRUCTION TAG

IMPORTANT INFORMATION!

CABLE AND CONNECTOR ASSEMBLY FOR

MODEL 590T, 885TT, AND 890TT

When using early production 885TT or 890TT microphones,
red jumper from D-E (W301) must be removed. In later
production units, red jumper D-E (W301) is moved to
location F-G (W309), per data sheet instructions. (No
modification required for Model 590T microphone.)

Install option jumper in radio per E.F. Johnson service
manual to provide +13.8 VDC on pin 3.

29D2127

STANDARD MICROPHONE-END CONNECTOR WIRING

AND WIRE FUNCTIONS FOR ALL MODULINK CABLES

RED AMPLIFIED AUDIO OUTPUT, AND

DC BIAS VOLTAGE INPUT

WHITE NON-AMPLIFIED AUDIO OUTPUT

YELLOW PTT SWITCH

BLACK PTT SWITCH GROUND

BLUE HANG-UP BUTTON

DRAIN GROUND

MICROPHONES

(LOCKING TAB ON REVERSE SIDE)

MODEL NUMBER CONNECTOR

ALM-17

CONNECTOR WIRING AT RADIO END

CONNECTOR TYPE: 6-PIN SQUARE RIGHT-ANGLE

PLUG WITH THUMBSCREW
(MANUFACTURED BY SHURE;
NOT AVAILABLE AS A SINGLE
ASSEMBLY)

CONNECTOR PIN ASSIGNMENTS:

PIN 1 DRAIN
PIN 2 RED
PIN 3 YELLOW
PIN 4 NO CONNECTION
PIN 5 BLACK
PIN 6 NO CONNECTION

WHITE, BLUE, AND SHIELD

CONDUCTORS ARE NOT USED

6-PIN SQUARE

STANDARD MICROPHONE-END CONNECTOR WIRING

AND WIRE FUNCTIONS FOR ALL MODULINK CABLES

(LOCKING TAB ON REVERSE SIDE)

RED AMPLIFIED AUDIO OUTPUT, AND

DC BIAS VOLTAGE INPUT

WHITE NON-AMPLIFIED AUDIO OUTPUT

YELLOW PTT SWITCH

BLACK PTT SWITCH GROUND

BLUE HANG-UP BUTTON

DRAIN GROUND

MODEL NUMBER CONNECTOR

ALM-18

CONNECTOR WIRING AT RADIO END

CONNECTOR TYPE: RJ-45 MODULAR 8-PIN

CONNECTOR PIN ASSIGNMENTS:

PIN 1 NO CONNECTION (BLACK LEAD OCCUPYING

SLOT; NO CONTACT USED)
PIN 2 DRAIN
PIN 3 WHITE
PIN 4 BLUE
PIN 5 YELLOW
PIN 6 RED
PIN 7 NO CONNECTION
PIN 8 NO CONNECTION (NO CONTACT USED)

MODULAR 8-PIN

CONNECTOR WIRING DETAIL

(LOCKING TAB ON REVERSE SIDE)

INSTRUCTION TAG

IMPORTANT INFORMATION!

CABLE AND CONNECTOR ASSEMBLY FOR

MODEL 590T, 885TT, AND 890TT

When using early production 885TT or 890TT microphones,
red jumper from D-E (W301) must be removed. In later
production units, red jumper D-E (W301) is moved to
location F-G (W309), per data sheet instructions. (No
modification required for Model 590T microphone.)

Install option jumper in radio per E.F. Johnson service
manual to provide +13.8 VDC on pin 3.

29D2127

STANDARD MICROPHONE-END CONNECTOR WIRING

AND WIRE FUNCTIONS FOR ALL MODULINK CABLES

RED AMPLIFIED AUDIO OUTPUT, AND

DC BIAS VOLTAGE INPUT

WHITE NON-AMPLIFIED AUDIO OUTPUT

YELLOW PTT SWITCH

BLACK PTT SWITCH GROUND

BLUE HANG-UP BUTTON

DRAIN GROUND

MICROPHONES

(LOCKING TAB ON REVERSE SIDE)

MODEL NUMBER CONNECTOR

ALM-19

CONNECTOR WIRING AT RADIO END

CONNECTOR TYPE: RIGHT-ANGLE DB-9 PLUG

NOTE: THIS CONNECTOR IS
MOLDED ONTO THE CABLE BY
THE VENDOR, AND CANNOT BE
INSTALLED WITHOUT SPECIAL
EQUIPMENT

DB-9 PLUG

CONNECTOR PIN ASSIGNMENTS:

PIN 1 --­PIN 2 YELLOW
PIN 3 --­PIN 4 RED
PIN 5 --­PIN 6 BLUE
PIN 7 --­PIN 8 BLACK
PIN 9 DRAIN

WHITE CONDUCTOR NOT USED

STANDARD MICROPHONE-END CONNECTOR WIRING

AND WIRE FUNCTIONS FOR ALL MODULINK CABLES

(LOCKING TAB ON REVERSE SIDE)

RED AMPLIFIED AUDIO OUTPUT, AND

DC BIAS VOLTAGE INPUT

WHITE NON-AMPLIFIED AUDIO OUTPUT

YELLOW PTT SWITCH

BLACK PTT SWITCH GROUND

BLUE HANG-UP BUTTON

DRAIN GROUND

MODEL NUMBER CONNECTOR

ALM-20

CONNECTOR WIRING AT RADIO END

CONNECTOR TYPE: 4-PIN ROUND PLUG

CONNECTOR PIN ASSIGNMENTS:

PIN 1 RED
PIN 2 DRAIN
PIN 3 YELLOW
PIN 4 NO CONNECTION
SHELL/CLAMP BLACK

4-PIN ROUND

STANDARD MICROPHONE-END CONNECTOR WIRING

AND WIRE FUNCTIONS FOR ALL MODULINK CABLES

(LOCKING TAB ON REVERSE SIDE)

RED AMPLIFIED AUDIO OUTPUT, AND

DC BIAS VOLTAGE INPUT

WHITE NON-AMPLIFIED AUDIO OUTPUT

YELLOW PTT SWITCH

BLACK PTT SWITCH GROUND

BLUE HANG-UP BUTTON

DRAIN GROUND

MODEL NUMBER CONNECTOR

ALM-22

CONNECTOR WIRING AT RADIO END

CONNECTOR TYPE: 6-PIN RIGHT-ANGLE MOLDED PLUG

(MOTOROLA PART # 09-D80218J01)

NOTE: CONNECTOR IS MOLDED ONTO CABLE, AND
CANNOT BE INSTALLED WITHOUT SPECIAL EQUIPMENT

6-PIN MOLDED R.A.

STANDARD MICROPHONE-END CONNECTOR WIRING

AND WIRE FUNCTIONS FOR ALL MODULINK CABLES

(LOCKING TAB ON REVERSE SIDE)

RED AMPLIFIED AUDIO OUTPUT, AND

DC BIAS VOLTAGE INPUT

WHITE NON-AMPLIFIED AUDIO OUTPUT

YELLOW PTT SWITCH

BLACK PTT SWITCH GROUND

BLUE HANG-UP BUTTON

DRAIN GROUND