Operation of the ARK-9
Automatic Direction Finder (ADF)
(for the DCS/Belsimtek Simulation MI-8MTV-2 ) written by (C/299) Strut.

In this lesson you will be taught the basic operation of the ARK-9 Automatic Direction Finding (ADF) set that is used in the MI-8MTV-2 Helicopter.By understanding the use of ARK-9 ADF unit you will be able too:

- Fly to or from a radio station or NDB with visual display of the relative bearing.- Identify stations by monitoring the audio call signs.- Determine and continuously display the relative bearings to a radio beacon or broadcasting radio station.- use the knowledge to help you to perform non-precision instrument landing approaches or navigating to the inner and outer ILS marker beacons.At the completion of this lesson you will have attained the knowledge to operate the ARK-9 ADF unit so to enable you to confidently navigate the MI-8MTV-2 Helicopter in the area of operations. (Hopefully you will, some people are just plain retarded)

Characteristics

The ARK-9 automatic direction finding (ADF) radio set is designed to use non-directional radio beacons (NDB), broadcasting radio stations or compass locators for in-flight navigation.Frequency range of the set is 150 to 1300 kHz.

The relative bearing is displayed by needle No. 1 (narrow) on the UGR-4UK heading indicators on the pilot and copilot instrument panels.

The ADF set consists of a receiver unit, a power supply, a control panel, a remote tuner switching unit (DPV), and a loop antenna unit.

The ADF set is powered by 27 VDC from the battery bus through the COMPASS MW circuit breaker on the right circuit breaker panel. AC power is provided from the 115 VAC inverter bus through the ARK-9 fuse in the main fuse panel.

Range is dependant on NDB signal strength and atmospheric conditions.

Description

ARK -9 ADF Control Panel and Channel Selector Relevant Controls - situated on the overhead console of the Co-Pilot position.

COMP (Compass)Powers upand prepares the set foroperation in ADF mode.VolumeMode Selector.Freq Setting knobsfor main Freq setting.

Reserve Freq Setting.Set same as Main Freq.

ARK 9

Description- cont

SPU-7 ICS Control Box HSI ARK-9 Select /Arc UD Select. located on left dashboard Both pilots HSI gauge and needles activate

ARC-9 selected here

This is the HSI indicator needle the white pointy end indicates which direction to go to.HSI ARC-9 Select and ARC UD Select For HSI Needle to function set on MW

OPERATION

The following 4 steps will prepare the ARK-9 for use : 1. Set the rotary selector on the SPU-7 ICS control box to the ARK-9 position.

OPERATION

2. Set the selector knob for the UGR-4UK Channel Selector to the ADF-MW position for visual display of the bearing.

OPERATION

3. Set the MODE selector on the ADF control panel to the COMP(Compass) position. The control panel lighting should come on and noise should be heard in the headset.

OPERATION

4. Tune the ADF set, dial the desired frequency using the main and/or reserve frequency dials and set the CHANNEL selector to the desired channel. There are 3 adjustment dials each for the Main and Reserve Freq Indicators.

Conclusion

Its easy to set up and if your start up procedure is correct you will have no problems.

Practice the procedure and it will be easy to remember after a couple of run throughs.

END OF LESSON

Good luck From (C/229) Strut

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