Walter Dittel FSG 70 Installation & Operation Manual Download Page 1

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FSG 70

VHF/AM COM

TRANSCEIVER

118.000 … 136.975 MHz

FSG 71M

VHF/AM COM

TRANSCEIVER

118.000 … 136.975 MHz

Installation & Operation

Manual

applies for FSG 70, article no. F10002

applies for FSG 71M, article no. F10003

Before installing and operating the radio,

read this manual thoroughly, please!

Please observe the Safety Information!

Keep for further use!

Document No.

027.HB.00E

Revision No.

(Reprint) 1

Date/Issue

July 1998

Avionics Division

Erpftinger Strasse 36

D-86899 Landsberg

Germany

Tel49 8191/3351-0

Fax +49 8191/3351-49

e-mail:

[email protected]

Internet:

http://www.dittel.com

Summary of Contents for FSG 70

Page 1: ...M article no F10003 Before installing and operating the radio read this manual thoroughly please Please observe the Safety Information Keep for further use Document No 027 HB 00E Revision No Reprint 1...

Page 2: ...ormation and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without prior written permission of the manufacturer Walter Dittel GmbH Luftfahrtgeraet...

Page 3: ...s 3 2 3 2 2 Audio Sidetone 3 2 3 3 Mechanical Installation 3 4 3 3 1 Installation of the Transceiver 3 4 3 3 2 Influence on Compass 3 4 3 3 3 Antenna Installation 3 7 3 4 On board Wiring 3 8 3 4 1 Gen...

Page 4: ...G 71M Hook up Diagram using wire harness F10029 1 2 Dynamic Microphones and INTERCOM 3 10 3 9 FSG 70 FSG 71M Hook up Diagram 1 2 Standard Carbon Microphone s and INTERCOM 3 11 3 10 Activating the AF E...

Page 5: ...g a transmitter Always switch OFF the radio first when installing the unit into vehicles aircraft or carrier cases or when removing from it Always switch OFF the radio first when starting an engine or...

Page 6: ...nger Failing to observe the note may cause death or heavy injuries CAUTION describes a special note for operation Failing to observe the note may cause damage of the transceiver and or stored data may...

Page 7: ...ating turbopropeller or turbojet engine aircraft as well as for helicopters with reciprocating or turbojet engines The equipment comply with applicable RTCA Performance Standards observe national regu...

Page 8: ...cw position By using the MHz kHz coaxial double knob on the front panel all 760 channels may be selected as usual b Storage mode The channel control knob is set to select the desired channel for any R...

Page 9: ...hort term 71 C Storage Temperature 55 C to 85 C Altitude capability 15 000m 50 000ft MSL Vibration stability 0 1 5 27Hz 1 5g 27 500Hz 1g up to 2000Hz Front panel dimensions 57 2mm corresponds to 2 cut...

Page 10: ...stored Channel spacing 25kHz Sensitivity 1 0 V for 6dB S N N 50 Ohms mod 1000Hz m 30 Bandwidth 8kHz at 6dB Selectivity 70dB at 25kHz 40dB at 17kHz Squelch Automatic defeatable threshold internally adj...

Page 11: ...d spurious radiation 2 10 7 Watt Harmonics and spurious in the range of 108 to 118 MHz 1015 to 1045 MHz 2 10 9 Watt 2 10 9 Watt Frequency response 6dB 350 to 2 500Hz Distortion factor m 85 10 Modulati...

Page 12: ...G 70 System 2 6 Accessories required but not supplied a VHF aviation communications antenna cable and BNC Plug b Headphone s approx 300 Ohms and or loudspeaker s 2 to 16 Ohms c Dynamic microphone s 20...

Page 13: ...no 118 136 975 28Vdc 027 131 Ceased Production FSG 70 no 118 135 975 14Vdc 027 132 Ceased Production FSG 70 no 118 135 975 28Vdc 028 121 Ceased Production FSG 70 no 118 157 975 14Vdc 028 122 Ceased Pr...

Page 14: ...FSG 70 FSG 71M OPERATION MANUAL Page 2 8 Reprint July 1998 W Dittel GmbH THIS PAGE INTENTIONALLY LEFT BLANK...

Page 15: ...975 MHz Receiver sensitivity should be equal the technical data on all channels check by sample test 3 Push left toggle switch upward SQ vary VHF generator output voltage and observe the squelch thre...

Page 16: ...no more increase of the amplitude on the CRT is visible control threshold Check both microphones they should have the same adjustment d Secure microphone gain potentiometer by any staking lacquer IMP...

Page 17: ...HP 331 A Audio Phone Audio Speaker Power Supply 13 8Vdc 2 5A VHF Signal Generator AF Millivolt Meter HP 331 A Dummy Load 50 8 Watt BNC Tee Dynamic Microphone s or Standard Carbon Microphone s UG 88C...

Page 18: ...anel select a location which is as far as possible from heat sources but which can be seen easily and reached by the pilot and co pilot Ensure that there is adequate space for installation of cables a...

Page 19: ...SG 70 FSG 71M OPERATION MANUAL Reprint July 1998 Page 3 5 W Dittel GmbH 63 61 191 237 33 4 5 58 47 0 2 47 0 2 All dimensions in Millimeter Weight 0 74 kg Fig 3 4 FSG 70 Dimensions Installation Drawing...

Page 20: ...SG 70 FSG 71M OPERATION MANUAL Page 3 6 Reprint July 1998 W Dittel GmbH 63 61 191 237 33 4 5 58 47 0 2 47 0 2 All Dimensions in Millimeter Weight 0 8 kg Fig 3 5 FSG 71 M Dimensions Installation Drawin...

Page 21: ...e fuselage such that it is well removed from any projections that may shield RX and TX such as propeller s landing gear or rudders The distance to other antennas e g COM NAV etc should be at least 1 5...

Page 22: ...sections should be kept Ground loops must be avoided The wires are soldered to the connector DA 15S Isolate the joints by shrinking sleeves or rubber tubes The transceivers are only protected against...

Page 23: ...with PTT Key Antenna Coax RG 58 C U COM Antenna 8 9 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Dyn Microphone Microphone GND Standard Microphone AF external Intercom RX Annunciator PTT Key Illumination 12 V...

Page 24: ...adset PTT Key as required Dyn Mike Phone as required Panel Light Switch AWG 18 20 0 6 0 75mm red AWG 18 20 0 6 0 75mm blue 1 5 5 4 3 2 1 Headset or Microphone with PTT Key Antenna Coax RG 58 C U 8 9 I...

Page 25: ...Plug PJ 055 P N E08941 Microphone Plug PJ 068 P N E08942 Copilot Headphone Audio OUT to Audio Panel as required 1 or 2 A C Speaker 4 to OFF ON 470 R 470 R AWG 20 AWG 20 DA 15S UG 88 U DA 15S Soldering...

Page 26: ...ening to received signals radio NAV etc Keying the PTT button causes normal TX operation without having to turn off the IC switch 3 4 4 Speaker Phone connection Up to two speakers 4 Ohms each can be c...

Page 27: ...em are equipped with an illumination of the frequency display The lamp voltage is supplied via the aircraft s dimmer or directly from the aircraft supply The lamp voltage is stamped on the type plate...

Page 28: ...tolerances permitted at 14 or 28 V as applicable this measurement is to be made with the engine operating at cruising RPM When carrying out a subsequent signal check the ground station must be at a d...

Page 29: ...e RX volume rotate the knob clockwise SQ Switch Toggle switch with two positions Lever down The squelch circuit is off Basic RX noise is audible Lever up SQ Common position the squelch circuit is acti...

Page 30: ...her band edge FSG 71M To select the desired operating frequency rotate the channel selector fully clockwise To tune the radio to a stored operating frequency rotate the channel selector switch to the...

Page 31: ...ost when the unit is switched OFF For safety reasons the memory battery should be changed every five to six years by authorized personnel recommended date of change see separate tag on unit 4 5 Batter...

Page 32: ...nger than the threshold approx 1 V enable the audio amplifier and are therefore reproduced in the headphones loudspeaker annoying VHF noise is thereby suppressed Also considerable power is saved If ho...

Page 33: ...FSG 70 FSG 71M OPERATION MANUAL Reprint July 1998 Page A 1 W Dittel GmbH Appendix A Certificate...

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