CHAPTER 14. MISCELLANEOUS EQUIPMENT

TM 11-5820-554-12

CHAPTER 14

MISCELLANEOUS EQUIPMENT

14-1. Microphone, Dynamic M-127/FRC-

93 (Collins MM-1)

The M-127/FRC-93 is a pressure-operated dynamic

microphone. It has a frequency response from 200 to

10,000 Hz. A dashboard bracket is supplied with the

microphone. When the microphone is removed from

the dashboard bracket, it is in position for instant

transmission. It has an output level of -48 db.

14-2. Microphone Headset (Collins MM- )

The Collins MM-2 is comprised of a high impedance

reluctance microphone and a single earphone which

can be used in either a fixed station installation or

with a mobile unit. It has a frequency response from

100 to 7,000 Hz and an output level of -50 db. It

weighs 3 1/2 ounces and is built to withstand the

Figure 14-2. Collins MM-2 microphone headset.

strenuous demands of daily mobile operation. The

microphone boom has a 360-degree adjustment,

14-3. Power Cable (Collins 440E-1)

making it possible to angle the mike to the best pickup

position. It is equipped with both mike and phone

The Collins 440E-1 is similar to the cable supplied

with the Collins 351D-2. This cable is used to

connect the Collins KWM-2/2A with the PP - 4765/

GRC-159(V) or the Collins MP-1, when the mobile

mount is not used.

14-4. Case, Electrical Equipment CY-

6197/ GRC-159 (Collins CC-2)

a. Description and Use. The CY - 6197/GRC-159 is

an especially built carrying case for the compo-

POWER CABLE XXX

( COLLINS MODEL 440E -I )

EL0D0047

Figure 14-3. Power cable Collins 440E-1.

Figure 14-1. Microphone, Dynamic M-127/FRC - 9

(Collins MM-1).

14-1