FSG 2T 5W VHF/AM Aviation Transceiver 118.000 … 136.975 MHz 25 kHz channel spacing ETSO: FAA: EASA.21O.1304 Rev.A TSO C37d / TSO C38d FCC ID: BVYFSG2T Installation & Operation applies for FSG 2T article no. F10350 Before installing and operating the transceiver, please read this manual thoroughly! Please observe the Safety Information! Keep for further use! Document name: Document no.: Revision: Date of Issue IM 035.00 FAV_D10048 3.00 June 2014 f.u.n.k.e. AVIONICS GmbH Heinz-Strachowitz-Str.
VHF/AM RADIO FSG 2T 760 Channel Aviation Transceiver Manual Revision History MANUAL REVISION IM 035.00 3.00 Retain this list in the front of the Installation & Operation Manual as a RECORD OF REVISIONS.
VHF/AM Radio FSG 2T 760 Channel Aviation Transceiver IMPORTANT NOTE! If installation into an aircraft is made by other than a certified avionics shop, you have to consult your responsible aircraft Avionics Airworthiness Inspector - before the installation – to get authorized certification of your completed installation. The conditions and tests required for ETSO and FAA-TSO approval of this article are minimum performance standards.
VHF/AM RADIO FSG 2T 760 Channel Aviation Transceiver Table of Contents Manual Revision History .................................................................................................... 2 Table of Contents ............................................................................................................... 4 List of Illustrations ............................................................................................................. 6 Abbreviations .................................
VHF/AM Radio FSG 2T 760 Channel Aviation Transceiver 4.2.4 Set-up using two amplified / Standard Carbon Microphones, separate on Mic 1 input, pin 1, and Mic 2 input, pin 3 ..................................................................................................... 44 4.2.5 Set-up using non-amplified microphone(s) on one input and amplified microphones on the other ....................................................................................................................................
VHF/AM RADIO FSG 2T 760 Channel Aviation Transceiver List of Illustrations Fig. 6 Page 3-1 Pre-Installation Test Set-up .......................................................................... 22 3-2 Deviation of a compass by an operating FSG 2T, depends on the distance between compass center and contour of transceiver .............. 23 3-3 FSG 2T, Dimensions, Installation Drawing .....................................................
VHF/AM Radio FSG 2T 760 Channel Aviation Transceiver Abbreviations A/C Aircraft mW Milliwatt A/N Article Number NM Nautical mile (1 NM = 1.
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VHF/AM RADIO FSG 2T 1 For Your Safety 1 For Your Safety Every radio, when transmitting, radiates energy into the atmosphere that may, under certain conditions, cause the generation of sparks. All users of our radios should be aware of the following warning: Do not operate this radio in an explosive atmosphere (petroleum fuels, solvents, dust, etc.)! During normal use, the radio will subject you to radio frequency energy substantially below the level where any kind of harm is reported.
VHF/AM RADIO FSG 2T 1 For Your Safety Sufficient speech volume is very important. While the lips are very close and facing the microphone, speak loud and clear. Proper speech level is indicated by the yellow flickering LED on the FSG 2T front panel. In aircraft / vehicles a suitable noise canceling microphone or headset shall be used. A backup microphone should always be carried during any flight.
VHF/AM RADIO FSG 2T 2 General Description 2 2.1 General Description About this document This installation and operation manual IM 035.00 refers to a FSG 2T, Article Number F10350, and contains instructions and descriptions for application, installation, presetting, operation and testing, as well as hook-up diagrams for the universal / multiuse FSG 2T VHF/AM Transceiver of f.u.n.k.e. AVIONICS GmbH, Avionics Division, 86807 Buchloe, Germany. Additionally, the following Maintenance Manual MRM 035.
VHF/AM RADIO FSG 2T 2 General Description FREQUENCY MODE: Active Frequency and actual onboard voltage are shown on the display. Turning / pushing the F/CH knob changes Frequency. CHANNEL MODE: Active Channel Number (1 … 20) and associated Frequency are shown on the display. Turning the F/CH knob changes preset Channel Number and associated Frequency. Reprogramming without restriction.
VHF/AM RADIO FSG 2T 2 General Description 2.3 Technical Description Both Transmitter and Receiver use the same digital frequency synthesizer and an accurate reference crystal. The transmit frequency is tuned simultaneously with the Receive frequency (Simplex operation). The single superhet Receiver offers high immunity against in-band and out-of-band RF interference, intermodulation and cross modulation, including ICAO Annex 10 FM immunity / intermodulation.
VHF/AM RADIO FSG 2T 2 General Description During Intercom, as long as a Receive signal exists, the Intercom audio level is reduced by 6 dB / half level, and the Receiver audio dominates therefore. The FSG 2T is equipped also with a transmit time-out timer. This avoids blocked channel after 2 minutes continuous TX (stuck button does not block a channel continuously) and is indicated by a continuously blinking display.
VHF/AM RADIO FSG 2T 2 General Description 2.5 Re-calibration Information IMPORTANT! For airborne applications, no frequency re-calibration is necessary, since applications in the 25 kHz channel spacing require a frequency accuracy tolerance of less than ± 20 ppm. For the first time after three years, FSG 2T equipment for ground applications requires checking and re-calibration of the high precision reference frequency (tolerance better than ±10 ppm).
VHF/AM RADIO FSG 2T 2 General Description 2.8 Optional Accessories Wide accessory scope allows FSG 2T installation and operation in aircraft, in ground systems; fixed, portable and mobile into vehicles. Description 16 A/N Connector kit, SUB-D 15-pin, incl. mounting hardware W00009 BNC antenna connector, solder type E08980 Cable Harness Set, 3.2 m / 10.5 ft, numbered and color-coded cables, polarized connectors, for use with Loudspeaker / Junction Box F10028 Intercom Cable Harness Set, 3.
VHF/AM RADIO FSG 2T 2 General Description 2.9 Equipment required, but not supplied a) VHF aircraft antenna with coax cable RG-58 C/U and BNC connector (male) b) Headphone (8 ... 600 Ohms, typical) and / or loudspeaker (4 ... 16 Ohms) c) Non-amplified dynamic microphone, (4 ...
VHF/AM RADIO FSG 2T 2 General Description 2.10 Some words about Microphones IMPORTANT a) Radio performance and system reliability significantly depend on quality acoustic accessories, and their proper audio leveling adjustments. Please avoid use of low quality / low performance accessories. b) After installation completion, optimized acoustics performance requires proper mike audio system selection and its appropriate level adjustment (non-amplified dynamic, or Standard Carbon Microphone(s) system).
VHF/AM RADIO FSG 2T 3 Installation 3 3.1 Installation General This section contains instructions and suggestions to be considered before installing the radio FSG 2T into an aircraft. Close adherence to these suggestions will assure more satisfactory performance from the equipment. Information in this section is intended for certified avionics shops only.
VHF/AM RADIO FSG 2T 3 Installation continuous Receiver acoustic noise without strange or rhythmic characteristic is audible. b) In Receive Mode, cw (clockwise) rotate / adjust the dot marking of the SQ knob on the dot marked on front panel. Verify, whether Receiver sensitivity on all channels complies with technical data (make sensitivity tests covering the whole frequency range). At almost full ccw and full cw position, the Squelch threshold shall be within approximately 0.
VHF/AM RADIO FSG 2T 3 Installation c) The correct microphone level setting is achieved when – slightly time delayed – the front signaling LED changes from RED to flickering YELLOW, while speaking in Transmit Mode loud, clear and close to the microphone transducer element. 5. Although due to the specific voice processor compression of modulation peaks, when tested with maximum sine wave modulation signal, a conventional testing of "standard modulation distortion measurements" is possible.
VHF/AM RADIO FSG 2T 3 Installation Transmitter Check Receiver Check Frequency Counter Distortion Analyzer Scope > 10 W Dummy load, or ROHDE & SCHWARZ RADIOCOMMUNICATION TESTER CMT/CMTA (see below!) if required VHF Wattmeter Modulation Analyzer VHF Signal Generator R&S, SMG UG-88C/U AF Millivolt Meter Audio Mic FSG 2T Antenna DB-15S Standard MIC IN Dynamic MIC IN Microphone Ground AF External IN Loudspeaker OUT Power Ground Headphone OUT Push-to Talk Switch IN RX Annunciat
VHF/AM RADIO FSG 2T 3 Installation 3.4 Mechanical Installation 3.4.1 Transceiver installation Any radio installation into an aircraft shall be coordinated with both the licensed Inspector who certifies the installation, and with the aircraft manufacturer's installation instructions. Certifying the aircraft installation may be subject to specific National Regulations.
VHF/AM RADIO FSG 2T 3 Installation BACK-PANEL MOUNTING 47mm 0.2 4.5mm 58mm 47mm 0.2 Cutout to be prepared or Standard 2¼" Instrument Hole Fig.
VHF/AM RADIO FSG 2T 3 Installation 3.4.3 Antenna installation Your radio FSG 2T is only as good as the antenna! For operation, a vertical polarized 50 Ohm broadband aircraft COM antenna is required. The antenna must be able to radiate RF energy evenly and omni-directional: First of all, look up the aircraft's manual for antenna installation instructions. The antenna installation location must be carefully planned. It would be the best to consult the Aircraft Certifying Inspector.
VHF/AM RADIO FSG 2T 3 Installation Ensure the BNC antenna plug is not shortened between inner and outer conductor (Ohmmeter). Resistance 0.0Ω indicates a short inside the antenna connector, while some 0.6 to 1Ω indicates the antenna cable resistance while an internally (static) protected antenna is used. A simple rod antenna is tested for low resistive contact between inner cable conductor and radiator, and outer conductor to counter weight.
VHF/AM RADIO FSG 2T 3 Installation 3.5 Airborne wiring Refer to Figures 3 - 4 to 3 - 8 of on-board wiring. 3.5.1 General recommendations Always ensure permanent good, stable electrical contacts, and efficient RF interference suppression of all electrical systems like generator / alternator, ignition, electronic variometer, anti-collision light, etc., especially consider vibration and corrosion effects. Consult the Aircraft Installation Licensing Inspector.
VHF/AM RADIO FSG 2T 3 Installation Pre-wired cable harness assemblies are color coded for simple plug-in installations when used with optional loudspeaker / junction boxes and dynamic microphones for all kind of aircraft. Electronic variometers seldom comply with airborne RF environmental type approval requirements. All of the known models at printing time of this manual have to our knowledge a (some even far) too high radiated RF interference emission.
VHF/AM RADIO FSG 2T 3 Installation Standard DB-15 male connector 9 15 8 COM Antenna Alternative stick mounted PTT Key(s) Antenna Coax RG-58 C/U 1 FSG 2T Loudspeaker/Junction Box A/N F10061 UG-88 C/U 9 8 COM Antenna grn Dynamic MIC IN Microphone GND Standard MIC IN AF External IN (Option) Intercom Control IN RX Annunciator OUT PTT Key IN (against GND) LED Backlight +12 Vdc IN Battery +11 … 16 Vdc Battery +11 … 16 Vdc Battery GND Battery GND +12 Vdc switched, OUT Headphone AF OUT Aircraft Speak
VHF/AM RADIO FSG 2T 3 Installation COM Antenna Antenna Coax RG-58 C/U FSG 2T Alternative stick mounted PTT Key/s Loudspeaker/ Junction box A/N F10061 9 UG-88 C/U 8 30W - 4Ω COM Antenna grn Dynamic MIC IN wht vio 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 MIC GND Standard MIC IN AF External IN (Optional) Intercom Control IN RX Annunciator OUT PTT Key IN (against GND) LED Backlight +12 Vdc IN Battery +11…16 Vdc Battery +11…16 Vdc Battery GND Battery GND +12 Vdc switched, OUT Headphone AF OUT Aircraft
VHF/AM RADIO FSG 2T 3 Installation COM Antenna Antenna Coax RG-58 C/U FSG 2T UG-88 C/U Stick mounted PTT Key/s COM Antenna Dynamic MIC IN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 MIC GND Dynamic MIC IN AF External IN (Optional) Intercom Control IN RX Annunciator OUT PTT Key IN (against GND) LED Backlight +12 Vdc IN Battery +11…16 Vdc Battery +11…16 Vdc Battery GND Battery GND +12 Vdc switched, OUT Headphone AF OUT Aircraft Speaker OUT Hardwired, nonamplified Dynamic Microphones e.g.
VHF/AM RADIO FSG 2T 3 Installation OPTION AF-External refer to § 3.5.5 COM Antenna Antenna Coax RG-58 C/U 470 R AF-External IN e.g.
VHF/AM RADIO FSG 2T 3 Installation OPTION AF-External refer to § 3.5.5 COM Antenna 470 R Antenna Coax RG-58 C/U AF-External IN e.g.
VHF/AM RADIO FSG 2T 3 Installation 3.5.2 Wiring the Microphone(s) IMPORTANT! Radio performance and system reliability significantly depend on quality acoustic accessories, and their proper audio leveling adjustments. After installation completion, optimized acoustics performance requires proper mike audio system selection and its appropriate initial level adjustment (non-amplified dynamic, or Standard carbon microphone(s) system).
VHF/AM RADIO FSG 2T 3 Installation 3.5.2.1 Microphone settings IMPORTANT! Both microphone inputs must either be terminated with appropriate microphone(s), or the not used MIC input must be set for Amplified Microphone (position V). To get easy access to the potentiometers and DIL Switches on the rear the radio should not be fixed in the instrument panel at that time! Loosen the upper cross-recessed screws of the rear panel and move up cover to get access to the potentiometers and DIL Switches.
VHF/AM RADIO FSG 2T 3 Installation 3.5.2.2 Dynamic Microphone(s) Due to the extremely wide mike input level adjustment range, it is mandatory to understand that correctly matched FSG 2T mike input sensitivity will be good ONCE FOREVER for this configuration. This guarantees a stable operation without audio feedback and maximum modulation at the best background noise attenuation.
VHF/AM RADIO FSG 2T 3 Installation 3.5.2.3 Standard Carbon, amplified Electret, amplified Dynamic Microphone(s) IMPORTANT! Panel jacks of PJ-068 type may only be used with amplified / carbon type microphones! Clean the PJ-068/PJ-55 connector system regularly and check contacts for sufficient spring-loaded force. This is especially mandatory under vibration operating conditions.
VHF/AM RADIO FSG 2T 3 Installation 3.5.3 Intercom (IC) INTERCOM is suitable for two seat aircraft with noisy cockpit. Intercom as well as radio operation should employ suitable aircraft headsets and must be matched properly to the transceiver (refer to § 4.2, Microphone Set-up). Hand-held microphones in combination with earphones can be used for Intercom as well, provided that the MIC audio output is not switched by the PTT function.
VHF/AM RADIO FSG 2T 3 Installation 3.5.5 OPTIONAL: AF External Operation 1µF VOL/SQ Potentiometer On the TX/RX module, the optional AF External Mode is enabled by making a solder bridge across two small solder pads, remove one resistor and change one capacitor.
VHF/AM RADIO FSG 2T 3 Installation 3.5.6 Backlighting IMPORTANT! Backlighting of the display and front panel is turned ON or OFF via a separate input, but can be controlled by the radio’s VOL switch, if desired (refer to Figure 3 - 8). In order to save current while supplied from a battery an external suitable illumination switch is suggested. The FSG 2T includes a LED backlight (night design). Pin 8 may be connected either directly to the 13.
VHF/AM RADIO FSG 2T 4 Recommended Set-up Sequence 4 Recommended Set-up Sequence IMPORTANT! To get easy access to the potentiometers and DIL Switches on the rear the radio should not be fixed in the instrument panel at that time! Loosen the upper cross-recessed screws of the rear panel and move up cover to get access to the potentiometers and DIL Switches. Make all settings in the usual environmental noise (e.g.
VHF/AM RADIO FSG 2T 4 Recommended Set-up Sequence 4.2 Microphone Set-up 4.2.1 Set-up using Loudspeaker / Junction Box and one (or two parallel, identical) non-amplified Dynamic Microphone(s) at Mic 1 Input, pin 1. Verify the settings of the DIL switches on the rear of the radio (DIL switch "Mic 1" set to D, DIL switch "Mic 2" to V, all others "OFF"). 1 2 3 4 5 6 Mic 1 Press the PTT key. The TX/RX LED should light steady RED. Speak loud, clear and close into one microphone.
VHF/AM RADIO FSG 2T 4 Recommended Set-up Sequence close into the corresponding microphone. Observe the TX/RX LED, it should flicker YELLOW. IF NOT, turn with a suitable screwdriver "Level Mic 2" potentiometer till the TX/RX LED flickers YELLOW while transmitting and speaking. When you stop talking the TX/RX LED should light steady RED! Release the PTT key, the TX/RX LED must turn to clear (no reception) or to GREEN (RX signal). 4.2.
VHF/AM RADIO FSG 2T 4 Recommended Set-up Sequence 4.2.4 Set-up using two amplified / Standard Carbon Microphones, separate on Mic 1 input, pin 1, and Mic 2 input, pin 3 This test must be performed with headphones to evaluate the quality of the MIC signals via Transmit Sidetone! Verify the settings of the DIL switches on the rear of the radio (DIL switch "Mic 1" set to V, DIL switch "Mic 2" to V, DIL switches 1 and 4 to "OFF", DIL switches 2 and 5 to "8mA").
VHF/AM RADIO FSG 2T 4 Recommended Set-up Sequence 4.2.5 Set-up using non-amplified microphone(s) on one input and amplified microphones on the other Verify the settings of the DIL switches on the rear of the radio according to your configuration. Set microphone level and microphone current separate for each input according to the individual procedures described above.
VHF/AM RADIO FSG 2T 4 Recommended Set-up Sequence 4.3 Adjusting the Headphone Volume and Transmitter Sidetone IMPORTANT! This setting determines the maximum headphone audio volume during Receive, Transmit (Sidetone), Intercom and AF External (if applicable)! Transmitter Sidetone is not adjustable by the VOL knob! Before adjusting the Transmitter Sidetone volume, the microphone sensitivity should be adjusted correctly (refer to § 4.2).
VHF/AM RADIO FSG 2T 4 Recommended Set-up Sequence 4.4 If applicable – check the Intercom Mode IMPORTANT! Before testing the Intercom Mode, the microphone sensitivity should be adjusted correctly (refer to § 4.2). Intercom is only possible when using headphones/headsets. The characteristic of the headphones should be identical. To check the Intercom Mode, switch ON the panel mounted Intercom switch. This activates the Intercom capability, while the A/C speaker is disabled.
VHF/AM RADIO FSG 2T 4 Recommended Set-up Sequence 4.5 Check the RX Loudspeaker / Headphone Volume IMPORTANT! When using two headsets the characteristics of both should be identical. On a busy channel listen to the radio traffic. Turn the VOL knob from fully counter-clockwise to fully clockwise position. The audio volume audible in the A/C loudspeaker and/or the headphone should increase accordingly. Set VOL knob to get a convenient audio level. This radio contains an audio-leveling circuit.
VHF/AM RADIO FSG 2T 4 Recommended Set-up Sequence 4.7 Testing on the Ground with engine Off Verification after installation completion. After installing the unit, check all aircraft control movements to be sure no electrical cable interfere with their operation. All aircraft and radio functions shall be tested after installation completion to identify, whether malfunctions caused by mechanical and / or electrical installation work occurs. Remove all foreign parts.
VHF/AM RADIO FSG 2T 4 Recommended Set-up Sequence 4.8 Ground checks with engine running (if applicable) Make sure that the aircraft's electrical DC system voltage on the FSG 2T input terminals is within the tolerances permitted for 14 Vdc systems (or 28 V with DC converter). Systems supplied only by a battery may operate from 9 to 16.1 Vdc. Such testing requires normal RPM rated at cruising speed.
VHF/AM RADIO FSG 2T 5 Functional Description 5 5.1 Functional Description Introduction This Section contains a functional description of each switch, push button, knob, indicator, display and connector located on the front or rear of the FSG 2T together with operating instructions. 5.
VHF/AM RADIO FSG 2T 5 Functional Description SQ (SQUELCH) Rotary control (outer ring) After turning ON the radio FSG 2T the automatic squelch is active depending on the SQ knob position. Standard Operating Mode: Set the SQ knob to the dot position, the Squelch (mute) threshold is approximately 1 µV. No Receiver noise should be audible during Standby. Only received signals above the SQ threshold are audible.
VHF/AM RADIO FSG 2T 5 Functional Description F/CH Knob Rotary control and push button = dual function Pressing the F/CH knob once while in the DIRECT TUNE MODE changes the access from kHz to MHz or vice versa from MHz to kHz. The active access to MHz or kHz is underscored by a cursor. While in the CHANNEL MODE pressing the F/CH knob is without function.
VHF/AM RADIO FSG 2T 5 Functional Description 5.3 Frequency Display, the 5-digit Liquid Crystal Display (LCD) can be back-lit. Frequency display complies with ICAO rules. a) Initial boot at Switch-ON / Power ON Displays all segments for 2 seconds Clear Display for 0.5 seconds Shows Firmware Version for 0.5 seconds Goes to last user setting b) DIRECT TUNE MODE, Normal Operation: Example: Display shows an active frequency of 129.350 MHz.
VHF/AM RADIO FSG 2T 5 Functional Description 5.4 Error Codes Display in all Modes High Voltage: Continuously slightly too high supply voltage changes value indication into ‘HI’ (above 16.1 Vdc / below 16.5 Vdc). Above approximately 16.5 Vdc, the radio automatically switches OFF itself, at no display indication. When supply is reduced to between 16 Vdc and 10.5 Vdc, the FSG 2T comes back into operation. Temperature Error: The whole LC display flashes.
VHF/AM RADIO FSG 2T 5 Functional Description 5.5 Connectors and controls on the rear side 50-Ω BNC jack, mating plug: BNC plug, UG-88 C/U Connects a suitable COM broad-band antenna with a frequency range of at least 118 - 137 MHz. Refer to § 3.4.3 for Antenna Installation. Standard DB-15 male connector with sliding lock retainer. Sliding Lock CLOSE OPEN Mating plug: 15-pole SUB-D, female, DB-15S, (A/N W00009: solder type, including back shell and mounting hardware). Refer to § 3.5 for airborne wiring.
VHF/AM RADIO FSG 2T 6 Operation 6 6.1 Operation Introduction This section contains basic operating procedures for the FSG 2T transceiver. This instruction is only applicable for a radio which is correctly installed and wired by a certified avionics shop or aircraft manufacturer checked together with the aircraft system, and optimized by the set-up procedure (refer to Section 4, Recommended Set-up Sequence).
VHF/AM RADIO FSG 2T 6 Operation The underscored kHz portion of the frequency indicates accessibility to kHz selection. Select the appropriate kHz portion by rotating the F/CH knob. A clockwise rotation will increment the previous frequency in 25 kHz steps (37, 40, 42 etc.) while a counter-clockwise rotation will decrement the previous frequency in 25 kHz steps (32, 30, 27 etc.) with rollover at each MHz and band edge (121.97 → 122.00 or 121.00 → 121.97).
VHF/AM RADIO FSG 2T 6 Operation 6.3 Receive (Listen) Operation After turning the radio ON the automatic squelch is either ON or OFF depending on SQ knob position. Squelch ON means that – without received signal – the receiver noise is blocked, the TX/RX LED is clear. When normal signals are received, the TX/RX LED turns to green; weak signals and interfering pulses are disabled. Set the RX volume of the aircraft loudspeaker or earphone to a comfortable level by rotating the VOL knob.
VHF/AM RADIO FSG 2T 6 Operation 6.4 Transmit (Talk) Operation IMPORTANT! Please keep radio discipline! Transmit only on a clear channel. Do not transmit on 121.50 as this is the international emergency frequency! Care for an all-round obstacle free antenna location; the called station should be within "line-of-sight" distance. Never place the radio such as the antenna gets very close to, or touching, exposed parts of the body, especially the face, shoulder or the eyes. 1.
VHF/AM RADIO FSG 2T 6 Operation 6.5 Memory Programming IMPORTANT! Memory programming is disabled at a supply voltage below 11 Vdc. When storing a frequency into a memory the "old" frequency will be overwritten without warning! Up to 20 non-volatile memories can be user-programmed. They are accessible after calling up the respective CHANNEL MODE. 6.5.1 Programming while in DIRECT TUNE MODE: Example: Turn the F/CH knob to change the underscored portion of the frequency to the desired frequency.
VHF/AM RADIO FSG 2T 6 Operation 6.5.2 Programming while in CHANNEL MODE: IMPORTANT! While in the CHANNEL MODE only pre-programmed Channel Numbers with its corresponding frequencies can be stored in other memory locations! Example: Turn the F/CH knob to change the underscored Channel Number to the desired Channel Number to be stored in another memory location. Press the STO button to initialize storing. Release the STO button. A flashing "CH" is shown.
VHF/AM RADIO FSG 2T 6 Operation 6.6 VOX Intercom IMPORTANT! When the Option AF EXTERNAL was activated by an approved Avionics workshop voice controlled Intercom is not possible! The built-in VOX voice controlled microphone threshold control will mute microphones during speech pauses. Intercom headset audio volume may be adjusted through installation and should also include, if applicable, the individual earphone volume adjustments on the headset phone capsule. 1. Switch ON Intercom.
VHF/AM RADIO FSG 2T 6 Operation 6.7 Intercom (Option AF EXTERNAL enabled) IMPORTANT! When the Option AF EXTERNAL is activated voice controlled Intercom is not possible! To achieve best cabin noise suppression, especially during speech pauses, optimized microphone sensitivity adjustment must be performed once during Installation Procedure.
VHF/AM RADIO FSG 2T 6 Operation 6.8 OPTION: AF External IMPORTANT! The Option AF EXTERNAL can easily be enabled! Refer to FSG 2T Service Manual, Circuit Diagram, page 10 - 28 and Location of Components, page 10 - 30, just make a solder bridge across W2001. Then mark the radio accordingly! Enabling AF EXTERNAL causes increased current consumption during Standby! In Standby, Receive and Intercom Mode, audio signals of additional units (other COM, VOR, Localizer, Marker, ADF, electric variometer, etc.
VHF/AM RADIO FSG 2T 6 Operation 6.11 Monitoring the aircraft onboard supply The transceiver FSG 2T includes a 3 digit display of the actual onboard supply voltage level. At dc levels below 11 V the voltage digit value starts automatically flashing for low supply warning! Radio supplied from a 13.75 Vdc / 7.2 Ah battery bus: The following operating times may be obtained depending on battery's capacity and transmitter duty cycle: Reference: Approximately +20°C / +68°F, battery 7.
VHF/AM RADIO FSG 2T 6 Operation 6.12 Operating times of FSG 2T supplied from a 12 V battery only The following duty cycle of Transmit (TX), Receive (RX) and Standby (STBY) results in available operating time (hours). Both the worst and the most favorable operation conditions are considered, e.g. maximum receiver volume combined with maximum speaker load. Higher current consumption will degrade the nominally available battery capability, as well as lower temperatures.
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VHF/AM RADIO FSG 2T Appendix A Appendix A, Technical Data FSG 2T A.1 General Type: FSG 2T, article-number F10350 Amplitude modulated (AM) VHF Avionics Transceiver Frequency range: 118.000 … 136.975 MHz Channels: 760 channels, 25 kHz spacing Frequency selection: VFO, digital Frequency display: 5 digit 7-segment LCD display (backlit) Frequency control: PLL frequency synthesizer, microprocessor controlled Memories 20, stored in a non-volatile EPROM A.
VHF/AM RADIO FSG 2T Appendix A A.4 Receiver Specification Receiver Type Single Superhet IF Frequency IF 21.4 MHz, high injection Sensitivity (m = 30% / 1,000 Hz) ≤ 1 µV (≤ -107 dBm / 50 Ω) for 6 dB S+N/N Selectivity (AGC method) ≤ ≥ ≥ Squelch Type, manual override Automatic (FM noise /Carrier override), adjustable on front panel AGC (m = 30% / 1 kHz) ≤ 6 dB, 1 µV (-107 dBm) to 1 V (+13 dBm / 50 Ω) 6 dB 60 dB 70 dB at ± at ± at ± 8 kHz 17 kHz 25 kHz AGC Delay (RX), m = 30%/1 kHz ≤ 0.
VHF/AM RADIO FSG 2T Appendix A A.5 Transmitter Specification TX RF Output Power (also during emergency operation) approximately 5 Watts / 50 Ω (carrier), 18 Watts PEP, at 9 Vdc … 16.1 Vdc, -0.5 dB ... + 1,5 dB TX Duty Cycle 1 : 4 (1 minute TX / 4 minutes RX) Frequency Tolerance ≤ 10 ppm (-20°C ... + 55°C / -4°F ... + 131°F) ≤ 5 ppm (0°C ... + 40°C / +32°F ... + 104°F) Modulation Amplitude modulation, AM (7K00A3EJN) Depth of Modulation 85% ± 2%, approx.
VHF/AM RADIO FSG 2T Appendix B Appendix B, Environmental Performance Classification Statement of the Level of Compliance with appropriate JAR TSO. EUROCAE ED-14D / RTCA DO-160D (29 July 1997), including Change 1 December 2000. ENVIRONMENTAL CONDITIONS AND TEST PROCEDURES FOR AIRBORNE EQUIPMENT PERFORMANCE STANDARD. NOTE: The following information provides examples only. It is not intended to be a comprehensive listing of all test conditions.
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VHF/AM RADIO FSG 2T Copyright - Service Information Copyright – Service Information Copyright 2014 f.u.n.k.e. AVIONICS GmbH All rights reserved. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without prior written permission of the manufacturer f.u.n.k.e. AVIONICS GmbH, 86807 Buchloe, Germany.
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