User Manual Part 1

FSG 90F System
2. General Description
November 2000 Page 9
W. Dittel GmbH
Section 2 General Description
2.1 Introduction
This installation and operating manual IM 034.00 contains instructions and descriptions
for application, installation, presetting operation and testing, as well as interconnecting
diagrams of the multi-use FSG 90F / FSG 90F-H1 VHF/AM Transceiver System of Walter
Dittel GmbH, Luftfahrtgeraetebau, D-86899 Landsberg, Germany.
The maintenance manual MRM 034.00 contains detailed circuit description, repair
instructions, alignment procedures, testing instructions, and an illustrated parts list.
2.2 Models of the FSG 90F System
This manual refers to 2 out of 8 models available up to now.
F10194, VHF/AM Dual Mode Airband Transceiver FSG 90F
Frequency range: 118.000 to 136.975 MHz, channel spacing 8.33 kHz/25 kHz, results in
2,278 channels, or 118.000 to 136.975 MHz, channel spacing 25 kHz, results in 760
channels. 99 channel memories for combined 8.33/25 kHz mode, additional 99 memory
channels for '25 kHz only' mode, 6 Watt RF output power, 10 - 16.5 Vdc supply. The
radio fits a standard ARINC NORM rectangular opening.
IDENT.: MODEL 90F-25/8.33 (ED-23B CLASS C / CLASS E RECEIVER, CLASS 4 / CLASS 6
TRANSMITTER).
F10306, VHF/AM Dual Mode Mode Airband Transceiver FSG 90F-H1
Frequency range: 118.000 to 136.975 MHz, channel spacing 8.33 kHz/25 kHz, results in
2,278 channels, or 118.000 to 136.975 MHz, channel spacing 25 kHz, results in 760
channels. 99 channel memories for combined 8.33/25 kHz mode, additional 99 memory
channels for '25 kHz only' mode, 10 Watt RF output power, 10 - 16.5 Vdc supply. The
radio fits a standard ARINC NORM rectangular opening.
IDENT.: MODEL 90F-H1-25/8.33 (ED-23B CLASS C / CLASS E RECEIVER, CLASS 4 / CLASS 6
TRANSMITTER).
2.3 Application
The equipment is well suited for operation in powered aircraft and helicopter with
reciprocating turboprop and turbojet engine.
Ultra low power consumption in conjunction with extremely wide DC supply voltage
range, small dimensions and wide scope of accessories allow universal FSG 90F(X)
airborne applications in any powered aircraft, motor glider and Ultralight, and in glider
and balloon, for primary or (also battery supplied) backup operation.