Becker Rhotheta SAR DF 517 Manual Download Page 21 | Manualshive

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Setup

Setup

•

Center console

– FM/UHF switch to FM
– Comm seat 2/3 switch to 2 (so observer uses the

radio)

•

Becker

– in EMERGENCY mode, 121.5MHz.
– Use Becker page with full ring (not arc).

•

G1000

– Clear all user waypoints
– Use AUX audio to listen to Becker

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Summary of Contents for Rhotheta SAR DF 517

Page 1: ...Electronic Search Electronic Search with the Becker and G1000 with the Becker and G1000 ...

Page 2: ...Becker SAR DF 517 Becker SAR DF 517 System Components System Components Control Display Unit CDU Antenna Receiver Unit ARU Two Primary components ...

Page 3: ... 5 156 8 243 and 406 MHz frequencies The DF unit will display a bearing relative to the nose of the aircraft for signals received There are two sets of frequencies that may be selected These are Emergency Mode or Training Mode frequencies The Emergency Mode or Training Mode can only be selected at power up ...

Page 4: ...ith Mission Master it must be on for DF to operate On power up 1 verify Emergency or Training mode To change the setting turn the page dial 2 and select the appropriate mode 3 Note this option is only available for the first 10 seconds after power up ...

Page 5: ...Initial Setup Initial Setup The Page dial 2 is used to switch the DF 517 between the different pages By holding the Rep button and rotating the page dial 1 the brightness can be adjusted ...

Page 6: ...ed frequency to DF by using the bottom right rotary dial 1 to select the desired preprogrammed frequency Use the volume 2 rotary dial to set the volume level Once the desired frequency is selected use the SQL 3 dial to select the squelch level ...

Page 7: ...be heard by selecting the AUX monitor toggle on the audio panel DFing is done using Page 1 or Page 2 Page 1 displays a full circle with the signal and bearing in 360o this page is preferred Page 2 displays a 90o window with the relative bearing and signal ...

Page 8: ...ont cont 1 The signal and relative bearing 3 Signal Strength 4 Squelch level Tracking frequency 406 025 in Emergency mode Note that to DF a signal the squelch level must be below the maximum signal strength DF 517 Page 1 Display ...

Page 9: ...DF DF 517 517 DFing DFing cont cont 1 Signal level and relative bearing 2 Position error Tracking Freq 121 650 in Training Mode DF 517 Page 2 Display ...

Page 10: ...DF DF 517 frequencies 517 frequencies ...

Page 11: ... Page 6 enables you to adjust the training frequencies 1 Select rotary switch selecting the trainings frequency MHz kHz 2 rotary switch changing the frequency Confirm the changed value by pressing pushbutton STORE 3 STORE Pushbutton to confirm changed values ...

Page 12: ...he top panel light adjustment and setting the annunciator panel switch in the Night position Additional information on the Becker DF 517 can be found in the manual Link at http www becker avionics de 666571_C_Images ImgProduc tsUSA ProductsUSAPDF ACF564 pdf ...

Page 13: ...ODE Indication of the actual operation mode 4 ARU Version Software version and serial number of antenna receiver Unit 5 CDU Version Software version and serial number of control display Unit Power On and operation modes emergency or training ...

Page 14: ...OLUME 3 SQL Should be below the noise level 4 CLR For erasing the stored bearing value 5 STORE While bearing an AM signal a 3 kHz sound is superimposed to the audio signal for technical reasons 6 REPEAT Displays the last valid bearing value with the corresponding receive level ...

Page 15: ...result of the averaging procedure 3 Receive level Field strength 4 Squelch level Squelch level must be below the noise level Learn to recognize valid signals using the marbles 5 Offset Corrects for antenna alignment adjusted in the edit menu 6 Mounting TOP mounted or BOTTOM mounted antenna 7 LS Internal timer LS meaning last signal indicating the time since the last signal was received displayed i...

Page 16: ...y 50 sec Pulse length of 400ms The scanning mode is possible with frequencies 406 025MHz or 121 500 243 000MHz or the matching training frequencies The LS timer LS meaning last signal always displays the time since last COSPAS SARSAT signal was received in 406 025 MHz Frequency displayed in scanning mode ...

Page 17: ...Becker Antenna Becker Antenna Antenna mounted on bottom of aircraft Solid one piece unit This ELT does not use wing null method ...

Page 18: ...Mission Flow Mission Flow ...

Page 19: ...r waypoint on the G1000 at your current position Be able to set a user waypoint based on a lat long Know how to use OBS mode Understand that the Becker will give you a best guess direction even with NO signal Don t get fooled use the marbles Understand how to go split on comms ...

Page 20: ... Launch Prepare What is the terrain in the area of the merge What direction and altitude gives the best chance to pick up the signal Have a plan of attack Consider airspace terrain weather and other issues for safe flight ...

Page 21: ... console FM UHF switch to FM Comm seat 2 3 switch to 2 so observer uses the radio Becker in EMERGENCY mode 121 5MHz Use Becker page with full ring not arc G1000 Clear all user waypoints Use AUX audio to listen to Becker ...

Page 22: ...Think 8 500 or higher If the target may be in terrain go as high as you can legally go Set a waypoint M1 on the G1000 at the first merge As new merges are received add M2 etc Always listen to Com2 on 121 5 De squelch and set volume so hiss is audible The aircraft com radio is often more sensitive than the Becker ...

Page 23: ...level Ignore the direction info until the clear marbles are within about 30 degrees of solid marble Periodically check 243MHz If signal is detected on 243 you may get better direction information due to the shorter wavelength Beware that the signal may be carrier only No problem The Becker can t tell the difference ...

Page 24: ...Signal NOT Acquired Signal NOT Acquired If signal is not detected by the merge use OBS mode off the merge waypoint to fly 30 mile passes 15 miles from the merge across the merge at 45 degrees M1 Entry ...

Page 25: ...cquired When the signal is heard use wing shielding to determine direction until the signal strength is high enough for the Becker If signal is carrier only listen for the hiss to go away Once the Becker is locked in just follow it ...

Page 26: ...in keep 001 005 relative bearing and mark a waypoint on passing Repeat from various directions and mark position on each passing B C etc until confident in location If terrain allows getting lower as low as 1000 AGL will give you a better position If you are correct you should be able to circle the position and the Becker should show it continuously to the inside of the turn ...

Page 27: ...big trends You may see the signal strength rise and then drop off Keep going a while it may come back even stronger Initial direction indications can be way off because of terrain masking and reflections If you keep getting higher signal strength you will eventually get there ...

Page 28: ...QUESTIONS QUESTIONS ...

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