Terminal Learning Objective At the end of this

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

UHF VHF Audio Select Panel

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

Characteristics Two-way radio Frequency range-225. 000 to 399. 975 Mhz Provides 3, 500 channels Guard receiver incorporated fix-tuned to 243. 0 Range--approximately 50 miles line of sight C H 0 1 MN 374. 30

C H 0 1 MN 374. 30 ON / OFF / VOLUME / TEST control knob

• No warm up time • Internal memory stores previously used frequency • Automatic squelch C H 0 1 MN 374. 30

Up to 20 preset frequencies (channels) may be selected CH 02 1 MN 32 72 4. 8 30 Channel Mode Select pre-set channels

ATIS C H 0 1 MN 3 1 6. 15

GROUND C H 0 2 MN 2 8 8. 25

TOWER C H 0 3 MN 2 4 8. 55

Rotate inner frequency select knob for increments of 25 KHz Rotate outer frequency select Press Channel knob for. Mode Select Button increments of 1 MHz C H 0 1 MN 2 36 1 3 9. 3 7 72 5 40 4 0

Transmitter Test Push and hold inner frequency select knob to activate transmitter test tone. C H 0 1 MN 3 7 4. 30

Receive Mode Select Button Main Mode C H 0 3 MN 2 4 1. 00

Receive Mode Select Button Main / guard Mode MN C H 0 2 GD 2 4 8. 20

Receive Mode Select Button Guard Mode MN GD 2 4 3. 00

Photocell MN GD 2 4 3. 00

Transmit Annunciator CH 02 2 4 8. 20 TX MN GD

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

Inner knob – 50 KHz pushed in - 25 KHz pulled out Outer knob – 1 MHz 121. 90 135. 20 Frequency Select Knob

121. 90 135. 20 Frequency Flip - Flop Button

135. 20 121. 90 Frequency Flip - Flop Button

135. 20 T 121. 90 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 1 MN 374. 30 Turn on and tune to proper Frequency

Set transmit select knob

E: Enabling Learning Objective Action: Identify proper functions of the KT-76 A 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

298 299

Operating procedures

Function Selector Knob • Altitude – 100 ft increments from Standby 45 to 50 second warm up • On – (Mode A) • Test – Rotate and hold for reply light illumination -1000 35000 ft transmitting (MODE C) Notocodes are

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” – “SQUAWK altitude” – “Stop SQUAWK” – “SQUAWK Standby”

BREAK TIME

TH-67 Radio Equipment, Communications Procedures, and Radio Phraseology