Plessey PRC 320/1 - Page 93

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5.

CHECK

RT320/1

SUPPLY

AND

SELECT

FREQUENCY

Carry

out

operations

1

and

2

in

Fig.6

of

Part

1,

Chapter

Two.

If

RT220/1

supplied

from

PV1318

and

needle

below

second

mark

in

operation

1,

SUPPLY

VOLTS

too

low.

4.

TUNE

ANTENNA

TUNING

UNIT (АТУ)

Press

and

release.

Depress

and

release

pressel.

Amber

TUNING

lamp

lights.

Extinguished

when

green

READY

lamp

lights

to

indicate

completion

of

tuning.

Repeat

tune

sequence

only

when

switching

on,

when

different

frequency

selected

or

when

antenna

changed.

If

red

fault

lamp

lights,

fault

in

antenna

system

indicated.

Refer

to

Chapter

Three.

5.

SELECT

MODE

AND

ADJUST

VOLUME

Set

RT320/1

mode

switch

to

LSB,

USB

or

AM

for

Speech

and

CW

for

morse.

Adjust

GAIN

control

for

required

volume

of

received

signal.

6.

OPERATE

To

select

transmit,

depress

pressel,

when

green

ACTIVE

LAMP

will

light.

To

receive,

release

pressel

(ACTIVE

lamp

extinguished).

81

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