f.u.n.k.e. Avionics FSG 2T VHF/AM
Aviation Transceiver

General Description

The FSG 2T VHF/AM COM is a miniaturized, lightweight, panel mounted (also for helicopters no shockmounts are required), single block transceiver operating in the VHF/AM airband radio frequency range 118.000 MHz to 136.975 MHz, providing 760 channels with 25 kHz channel spacing, covering a standard communications distance of ca. 100 NM (nautical miles) at FL 70.

The transceiver fits into a standard 2¼″ / 58 mm diameter instrument hole and is fixed by four (4) screws M4. Installation depth behind the front panel including connectors and wiring is 240 mm. Connections on the rear panel to the electrical environment are achieved via a locked Standard DB–15 male connector using a wiring harness, and a BNC antenna connector. All operational control and display elements are located on the night–design front panel: Transmit / Receive Mode, modulation level or Intercom is indicated by a 3–color Status signaling LED on the front panel. The back–lit Liquid Crystal Display (LCD) shows the active frequency, onboard supply or memory channel number as well as ERROR codes (if applicable).

Features

• VHF/AM airband transceiver
• Powerful single block transceiver approved for airborne operation in fixed wing and helicopter aircraft
• 5 Watt RF output power
• Memory for 20 channels
• Integral controls enable steady performance characteristics
• Compatible with CLIMAX (multi–carrier) operation

Dittel FSG 2T

Application

The equipment is approved for airborne operation as COM 1, COM 2, COM 3 in Fixed Wing and Helicopter aircraft, and for ground use in any Portable, Fixed Based or Mobile operation. Ultra low power consumption in conjunction with extremely wide DC supply voltage range, small dimensions and wide scope of accessories allow universal airborne applications in any powered aircraft, motor glider and Ultralight, and in glider and balloon, for primary or (also battery supplied) backup operation. Universal use in ground vehicle, as well as for compact portable cases and for desk–top or rack mounted, local or remote controlled, fixed base primary, or (also battery supplied) backup operations, are further applications. Please always ensure suitable antenna solutions!

Operating Time with 12 V 7.2 Ah Battery

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. The following tables show significant time differences depending on current consumption during Receive, and at temperatures.

Maximum RX audio volume (Loudspeaker)

Max.
Current
Drain
.05A 1.35A .8A .05A 1.35A .8A .05A 1.35A .8A .05A
Lead 12V 7.2Ah STBY,
w/out RX
5%
TX
5%
RX
90%
STBY
10%
TX
20%
RX
70%
STBY
20%
TX
40%
RX
40%
STBY
Temp –20°C/–4°F 76 hrs 25 hrs 11 hrs 6 hrs
Temp +20°C/+68°F 131 hrs 44 hrs 20 hrs 10.5 hrs
Temp +50°C/+122°F 139 hrs 46 hrs 21 hrs 11 hrs

Microphone Compatibility

On the rear panel a 15–pin SUB–D connector for the aircraft wiring is located. It contains two independent microphone inputs which can be set individually by (covered) DIL switches suitable either for:
•Dynamic non–amplified microphones,
•Amplified Dynamic / Electret / Standard Carbon Microphones, with or without DC supply, or
•One input for a Dynamic non–amplified microphone and the other input for an Amplified Dynamic / Electret / Standard Carbon Microphone.

Equipment Required but not Supplied

• VHF aircraft antenna with coax cable RG–58 C/U and BNC connector (male)
• Headphone (8… 600 Ohms, typical) and / or loudspeaker (4… 16 Ohms)
• Non–amplified dynamic microphone, (4… 600 Ohm), and/or amplified / Electret / Standard carbon microphone, with or without PTT key (separate MIC inputs amplified / non–amplified, sensitivity adjustable)
• Alternatively to b) and c) headsets with similar specifications
• Battery power supply unit 12 Vdc, minimum 7.2 Ah, for aircraft without electrical system
• Push–to–talk key, e.g. stick mounted (if microphone without PTT key is used)
• Pre–wired cable harness F10028 or F10029 (Intercom)
• 15 pole SUB–D connector type DB–15 S and cover, if no pre–wired cable harness is used.

About f.u.n.k.e. AVIONICS

f.u.n.k.e. AVIONICS was initially created in 2008 under the name Funkwerk Avionics as a company within the German Funkwerk–Group, being a result of a merger between the former Filser Electronic GmbH, Waal/Bavaria, and the aerospace business unit of Euro Telematik AG, Ulm. In 2012 Funkwerk Avionics was sold by Funkwerk, the majority of the shares was taken by a German industrial group, the current f.u.n.k.e. MITTELSTANDS GmbH. f.u.n.k.e. (fabrication, utilities, network, know–how, engineering) hereby reflects the industrial focus. As a consequence Funkwerk Avionics changed the name into f.u.n.k.e. AVIONICS at the end of 2013. Being part of an industrial group of small and medium sized enterprises, f.u.n.k.e. AVIONICS today operates two business lines, avionics products as well as avionics projects.

Technical Data

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
Weight & Dimensions
Exposed dial face 57 mm / 2¼″ dia, fits into standard instrument hole
Overall dimensions W = 63 mm, H = 61 mm, L = 217.5 mm
W = 2.48″, H = 2.4″, L = 8.6″
Installation depth behind panel 240 mm / 9.5″ incl. 50 mm / 2″ for harness
Weight 600 grams / 1.32 lb.
without harness and mating plugs
f.u.n.k.e. FSG 2T
f.u.n.k.e. FSG 2T

Power Supply & Fuses

 
Power supply voltage Nominal 13.8 Vdc (normal 11.0…16.1 Vdc)
Emergency Operation 9 Vdc…11 Vdc (flashing display), no performance degradation
Automatic Turn–OFF At approx. 8.5…9 Vdc, comes back at approx. 10.5 Vdc
Current Consumption at:

Squelch ON, no AF volume
Receive, Intercom and / or AF
External, Headphone

Receive, max. volume,
Loudspeaker (30%…85% AM)

Transmit Mode (carrier /70% AM)

Backlighting
9 Vdc 11 Vdc 13.8 Vdc 16 Vdc
80 mA 65 mA 50 mA 40 mA
400 mA 330 mA 260 mA 210 mA
1400 mA 1150 mA 800 mA 600 mA
1.8 A 2.2 A 1.45 A 1.7 A 1.1 A 1.35 A 0.9 A 1.2 A
add 60 mA
DC supply voltage metering
status
≥ 12.7 Vdc Battery full ≥ 12.0 Vdc Battery ca. ½ capacity
Emergency operation > 11.0 Vdc Battery is nearly flat, display starts flashing
between 11 V and 9 Vdc supply
Internal Fuse, protects switched
Dc Output
315 mAmp, medium time lag, resettable fuse



f.u.n.k.e. AVIONICS
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