Technical Characteristics - TM-11-5821-277-200009

TM 11-5821-277-20

Sensitivity --------------A maximum signal of 8

1-6. Technical Characteristics

microvolts, modulated 30

a. Overall.

percent at 1,000 Hz is re-

quired to achieve 6-db

Power Input .----- ------ +27.5 volts dc, -20 to +10

signal plus noiseto-noise

percent, 11 amperes maxi-

ratio.

mum.

Selectivity:

Power comsumption:

15 kHz wide minimum at

Normal (using sup-

-- ------------- 2.0 amperes

6 db down; +31.5 kHz

plied 50-kHz filters,

Transmit

------------ 7.5 amperes, carrier only.

wide maximum at 60 db

FSN 5915-989-0898

10.5 amperes, carrier with

down.

and FSN 5915-731-

l00-percent modulation

8211, in positions

Frequency range ------116.000 through 149-975

FL106 and F1301)

MHz..

Sharp (using optional 6 kHz wide minimum at

Number Of channel ---680 channels, as supplied,

2.5-kHz filters Wilcox, 6 db down, 18 vdc wide

spaced 50-kHz apart for

maximum at 60 db down.

puts No. 44266-2

receive and transmit. Al-

and 98179-2, in posi-

ternate filters may be in-

tions FL106 and

stalled for 25-KHz chan-

FL301)

nel spacing, providing

All spurious reponses----- At least 60 db down.

1,360 channels.

Audio output impedance:

Channeling time -------Less than 4 seconds.

Receiver____________500 ohms nominal; accom-

Frequency selection---Two out of five (2 X 5) sys-

modates output loads from

tem.

200 ohms to infinity.

Environmental require-

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

ments:

Audio distortion ----------- Less than 7.5 percent at

Temperature :

normal rated output for

Continuous

signal modulated 30 per-

Operation --- --54C to +55C (-65F

cent at 1,000 Hz.

to +181 F).

Audio response ------------ Less than 6-db total varia-

Intermittent

tion from 300 to 3,750 Hz.

operation --- -54C to +71C (-65F

Agc ---------------------- Receiver output will not vary

to +160F).

more than 3 db over range

(30 minutes

of signal input levels from

maximum) .

5 to 100,000 microvolts,

Power

and not more tham 6 db

removed ---- -62C +71C (-79.6F

over range of signal input

to +160F).

levels from 6 to 500,000

Humidity -----95 to 100 percent at 50C

microvolts. Receiver will

(112F) for 48 hours with

not overload with 1-volt

moisture condenstation on

input signal.

equipment removed once

Squelch threshold ---------3 microvolts or less, inter-

each hour.

nally adjustable.

Altitude ------------ 45,000 feet maximum

Vibration:

RT-857/ARC-134

c. Receiver-Transmitter

Shockmounted ----0.30-inch constant excursion

(Transmit Function).

from 10 to 55 vibrations

Output impedance --------- 52 ohms, coaxial.

per second with maximum

acceleration of 5 g. Con-

Power output -------------- 25 watts minimum; 40

watts nominal

stant acceleration of 5 g

from 55 to 500 vibrations

Frequency stability -------- Better than 0.005 percent-

per second.

Type of emission ---------- Carrier plus modulation.

Rigid mount ---------- 0.020-inch constant excursion

Type of modulation -------- Amplitude, high level.

from 5 to 37 vibrations per

Modulation system ---------- Internal modulator capable

second with maximum acc-

of modulating transmitter

coloration of 8 g. Constant

100 per cent with a volt-

acceleration of 1.5 g from

age of 0.35 volt rms at

37to 500 vibrations per

1,000 Hz applied to 100

second.

ohm input circuit. Overall

--------- -------- 6 g operating; 15 g impact

distortion will not exceed

(10-millisecond duration).

10 percent at 100 percent

at 100-percent modulat.ion

b. Receiver-Transmitter RT-857/ARC-134 (Re-

at 1,000 Hz. Audio system

ceive Function) .

flat within 6 db from 300

to 3,000 Hz.

Input impedance ----- 52 ohms, coaxial.

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