Technical data

VHF/AM RADIO FSG 2T
2 General Description
14 FAV_D10048 June 2014
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. Should such stuck button malfunction
continue, the FSG 2T is ready for another 2 minute transmission period when turning OFF
and ON the unit again (e.g. for emergency or blind transmission).
OPTION: The external AF input allows interconnection of 1 Volt / 600 Ω audio source(s)
especially in aircraft using other COM, VOR / LOC, DME, MKR and / or electric
variometers. This allows signal monitoring during Receive Mode by speaker, and / or
headphone in Intercom Mode. This option can only be enabled by an internal solder
bridge (performed by an approved Avionics Service Shop, marked on the information
label). This increases the Standby current consumption up to 200 mA. In addition the
VOX Intercom Function is then disabled.
External AF input, Receive and Intercom audio listening through headphone(s) is
simultaneously possible in Receive / Standby Mode.
2.4 System and Type Approval Information
The VHF/AM Airband Transceiver FSG 2T complies with ICAO 25 kHz channel spacing
and also meets applicable National and International Type Approval requirements, for
any airborne operation:
 JTSO Authorization LBA.O.10.911/103 ETSO (LBA Luftfahrt-Bundesamt), replaced
by ETSO Authorization EASA.21O.1304 RevA, is based on EUROCAE ED-23B
Airborne requirement (25 kHz ONLY CH spacing).
 FM Immunity requirements according to ICAO ANNEX 10 against FM Broadcast RF
Interference.
 Audio filtering required in areas with CLIMAX operation in 25 kHz channel spacing.
 Associated EUROCAE ED-14D / RTCA DO-160D Environmental requirements for
Fixed Wing and Helicopter aircraft.
 Associated EUROCAE ED-12B Software requirements based on ED-12B, Level C.
 CE Conformity Nr. 0682 requirements for ground operation, meeting ETSI EN 301
489-1 V1.9.2 and ETSI EN 301 489-22 V1.3.1.
 FCC Compliance with Part 15 (receiver) and Part 87 (transmitter),
FCC ID: BVYFSG2T.
 FAA / TSO Authorization.