Transmit path - TM-11-5820-695-350028

TM 11-5820-695-35

circuits is applied to the radio modulator circuits through

(1) Transmit path. The cable system

attenuator assembly 1A3, and af-rf amplifier 1A4. The

input signal consisting of pcm, orderwire, and direct

orderwire signal output (thru ow rec) from the cable-to-

current is applied to the FROM CABLE input of

radio circuits is applied through the radio patch panel to

Transmitter, Radio T-1054(P)/GRC-144(V). The three

orderwire assembly 1A13 where it is amplified and

signals are separated in the cable-to radio circuits of

distributed to attenuator assembly 1A3 (to radio ow),

digital data modem 1A12. The distorted pcm signal is

Handset H-156/U, the remote phone, and the

reshaped, retimed, and converted to a level compatible

loudspeaker.

The orderwire circuits operate on a

with the radio system. The orderwire signal is amplified.

partyline basis by interconnecting signals between the

The direct current portion of the signal is routed back

four sources (thru ow, Telephone Set TA-312/PT,

from the FROM CABLE input to the TO CABLE output

Handset H-156/U, and the radio equipment.

For

through the cable-to radio and radio-to-cable circuits of

example, a signal originating at Telephone Set TA-

digital data modem 1A12. The cable current from the

312/PT (remote voice send) is amplified and is

input cable is looped back to the output cable so that

distributed to Handset H-156/U, thru ow send, attenuator

power is provided to operate Restorer, Pulse Form TD-

assembly 1A3 (to radio), and to the speaker. The to

206 placed at 1 mile intervals in the synchronous cable

radio ow signal is applied to the radio modulator circuits

transmission path or to operate Restorer, Pulse Form

through attenuator assembly 1A3 and af-rf amplifier

TD-982/U placed at 1/2 mile intervals in the

1A4. The pcm and orderwire signals are combined at

asynchronous cable transmission path.

The

the output of af-rf amplifier 1A4

regenerated pcm output signal from the cable-to-radio

Change 6 2-2