Nomencalture and Common Names

TM 11-5821-277-20

1-8. Nomencalture and Common Names

Audio input inpedance:

Microphone . . . . . . . . . . . . . . 100 ohms

ATCSS . . . . . . . . . . . . . . . . . . 100 ohms

0 dbm . . . .

. . . . . . . . . . . . . . . 500 ohms, center-tapped.

Audio input

. . . . . . . 0.25 volt, 1,000 Hz.

Microphone . . . . . . .

. . . . . . . . . 1.0 volt, 1,000 hZ.

ATCSS. . . . . . . . .

0 dbm

. . . . . . . . . . . . . . . . . . . 1 milliwatts, 1,000 Hz.

Sidetone output impedance . . . .

500 ohms nominal; accomo-

dates output loads from

200 ohms to infinity.

Sidetone output. . . .

. . . . . . . . . . 100 milliwatts into external

200- or 500-ohm resistive

1-9. Description of Equipment

load for 100-percent

modulation.

d. Control, Radio Set C-7197/ARC-134.

Power requirements. . . . .

Frequency rangge and

c h a n n e l spacing

Ambient temperature:

Continuous operation

(30 minutes, maxi-

mum).

Power removed

Humidity

Altitude

Vibration

1-4

Change 2