Technical data

VHF/AM RADIO FSG 2T
6 Operation
66 FAV_D10048 June 2014
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
7.2 Ah, only radio is supplied.
Duty cycle:
10% Transmit, 20% Receive, 70% STBY
Flashing Dc value only in Transmit:
ca. 4 hrs left
Flashing Dc value also during Receive:
ca. 45 min. left.
Recommendation: Reduce utmost
transmitting!
Short-time flashing Dc value during
Standby (SQ ON, clear channel)
ca. 45 min. left in Standby.
Cease transmitting!
Continuous flashing Dc value during
Standby (SQ ON, clear channel)
Radio will soon switch OFF itself!
Recharge battery as soon as possible
(refer to § 6.13, Emergency Operation)
Remark: These transitions are fluent. Recovery effect after load reduction
may be possible. Low battery temperature reduces operation time.
Radio supplied from a 13.75 Vdc generator bus (aircraft or vehicle supply):
Flashing Dc value:
Urgently check aircraft's or vehicle's
electrical system (generator, battery,
regulator) and / or installation!
Radio supplied from a 28 / 14 V Regulator (28 Vdc aircraft or vehicle supply):
Flashing Dc value:
Urgently check 28 / 14 V Regulator,
aircraft's or vehicle's electrical system
(generator, battery, regulator, fuse) and
installation!