TM-9-2350-273-BD

M48/M60 SERIES TANK, COMBAT FULL-TRACKED 105-MM GUN

TECHNICAL MANUAL; OPERATORS, ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE; BATTLEFIELD DAMAGE ASSESSMENT AND REPAIR

TM-9-2350-273-BD - Page 193 of 288

TM 9-2350-273-BD

COMMUNICATIONS SYSTEM

Procedural Steps (Cont’d)

aa. Repeat steps (s) through (w) to preset frequencies on settings 2, 3, and 4.

NOTE

Only two frequencies can be preset on Band I and two more

can be preset on Band II.

Example:

If the PRESET

C

HANNEL

BAND SELECTOR (11) is set at Band I position

for preset #1 and #2, only Band II frequencies can be

selected for presets #3 and #4. Any combination of bands

and presets may be used.

ab. You are now ready to operate in the preset mode.

Any time you want to

select a preset frequency, simply turn the PRESET CHANNEL/CONTINUOUS TUNE

SELECTOR SWITCH (18) to the desired preset number.

ac. To

operate

in

the

CHANNEL/CONTINUOUS TUNE

labelled I and II.

“I” corresponds

frequencies.

continuous

tune

SELECTOR SWITCH

to Band I frequencies

mode,

turn

the

PRESET

(18) to the lower positions,

and “II” corresponds to Band H

ad. Turn the FREQUENCY TUNING KNOB (27) to the desired frequency.

ae. Load the antenna by accomplishing steps (w) thru (z).

CAUTION

Observe a 1:3 transmit to receive ratio e.g., 3 minutes

transmit to 9 minutes receive, to minimize the possibility of

overheating the power supply and power output tubes.

af. You are now ready to operate in the continuous tune mode. The tuning

controls are very sensitive; therefore, the continuous mode should not be selected if the

radio is to be moved or subjected to vibrations.

9.

Record the BDAR action taken.

When the mission is completed, as soon as

practicable, repair tank using standard maintenance procedures.

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