Terminal Learning Objective

At the end of this lesson you will:

ACTION: Identify the characteristics, operating procedures and functions of the TH-67 communications equipment and transponder.

CONDITION: In a classroom environment given information on the TH-67 communications equipment and transponder.

STANDARD: Answer questions pertaining to the characteristics, operating procedures and functions of the TH-67 communications equipment and transponder. Receive a “GO” by correctly answering the required number of questions on criterion referenced examination 011-0050.

A: Enabling Learning Objective

Action: Identify the operating procedures of the AA 95-732 audio select panel

Condition: Given information about the audio select panel

Standard: IAW the TH-67 operator’s supplement

Audio Select Panel

Audio Select Panel

UHFVHF

Audio Select Panel

B: Enabling Learning Objective

Action: Identify the proper functions of the KTR 909 UHF radio

Condition: Given information about the KTR 909 UHF radio

Standard: IAW the TH-67 operator’s supplement

UHF Radio

C H 0 13 7 4 . 3 0

M N

Characteristics

Two-way radioFrequency range--225.000 to 399.975 MhzProvides 3,500 channels

Guard receiver incorporatedfix-tuned to 243.0

Range--approximately 50 miles line of sight

C H 0 13 7 4 . 3 0

M N

ON / OFF / VOLUME / TEST

control knob

C H 0 13 7 4 . 3 0

M N• No warm up time

• Internal memory stores previously used frequency

• Automatic squelch

C H 0 13 7 4 . 3 0

M N

Channel Mode SelectSelect pre-set channels

C H 0 23 2 2 . 8 0

Up to 20 preset frequencies

(channels) may be selected

5C H 0 1

M N

316.1

ATIS

5C H 0 2

M N

288.2

GROUND

5C H 0 3

M N

248.5

TOWER

0C H 0 1

M N

Rotate inner frequency select

knob for increments of 25

KHz

Press Channel Mode Select Button

2374.3

Rotate outer frequency select

knob for increments of 1

MHz

5470136209

0C H 0 1

M N

374.3

Push and hold inner frequency select knob to

activate transmitter test tone.

Transmitter Test

0C H 0 3

M N

241.0Main Mode

Receive Mode Select Button

0C H 0 2

M N

248.2Main / guard Mode

Receive Mode Select Button

GD

0GD M N

243.0Guard Mode

Receive Mode Select Button

0GD M N

243.0Photocell

0C H 0 2

M N

248.2

Transmit Annunciator

GD

TX

C: Enabling Learning Objective

Action: Identify the proper functions of the KX-165 VHF radio

Condition: Given information about the KX-165 VHF radio

Standard: IAW the TH-67 operator’s supplement

VHF Radio

Characteristics

Two-way Nav/Comm radio

Comm frequency range--118.000 to 136.975 Mhz

Provides 760 channels

Guard frequency--121.500 Mhz

Range--approximately 50 miles line of sight

Nav radio-not used in primary

ON / OFF / VOLUME - control knob

• No warm up time

• Internal memory stores previously used frequencies

• Automatic squelch

1 2 1 . 9 0 1 3 5 . 2 0

Frequency Select Knob

Inner knob – 50 KHz pushed in

- 25 KHz pulled out

Outer knob – 1 MHz

1 2 1 . 9 0 1 3 5 . 2 0

Frequency Flip - Flop Button

1 2 1 . 9 0

1 3 5 . 2 0

Frequency Flip - Flop Button

1 2 1 . 9 0

1 3 5 . 2 0

T

Transmit Indicator

D: Enabling learning Objective

Action: Identify procedures for distributing communications inside and outside the TH-67

Condition: Given information about the TH-67 cyclic or foot-mounted microphone switch

Standard: IAW the TH-67 operator’s supplement

Turn on and tune to proper Frequency

C H 0 13 7 4 . 3 0

M N

Turn on and tune to proper Frequency

Set transmit select knob

E: Enabling Learning Objective

Action: Identify proper functions of theKT-76A transponder

Condition: Given information about the transponder

Standard: IAW the TH-67 operator’s supplement

Characteristics

Enables the aircraft to identify itself electronically

Works with primary RADAR and is classified as secondary RADAR

Two modes of Operation:

Mode A

Mode C

Window Control Knobs

Possibility of 4096 different code combinations

Mode A codes

VFR flight -- 1200

Hijack -- 7500

Lost communications -- 7600

Emergency -- 7700

Mode C

299

298

Operating procedures

Function Selector Knob

• Standby - 45 to 50 second warm up

No codes are transmitting

• On – (Mode A) • Altitude – 100ft increments from

-1000 to 35000 ft (MODE C)

• Test – Rotate and hold for reply light illumination

Reply light

Ident - briefly press to alter signal for approximately 25 seconds

Code windows

Communication Phraseology

SQUAWK – Activate specific modes/codes/functions on the helicopter transponder:– “SQUAWK one two zero zero”– “SQUAWK altitude”– “Stop SQUAWK”– “SQUAWK Standby”

TH-67 Radio Equipment, Communications

Procedures, and Radio Phraseology