The Multimode

Digital Radio Equipment

GENERAL FEATURES
OTE D100 series is the unique digital radio equipment able to • VHF Data Link Mode 2 sub-networks: OTE D100 implements
implement all communication standards foreseen by ICAO an ARINC 750 - compliant with VDL2 protocol stack (like
Annex 10 for the VHF band. the airborne VDR);
• Integrated voice and data networks (VDL mode 3);
It can be easily configured for integration into the following • Navigation & Surveillance data networks: OTE D100 is a
communication systems: full VHF Data Link Mode 4 transponder, that handles ADS-
B data without the use of additional controllers.
• Voice networks with traditional analog AM-DSB modulation
with two different channels spacing (25kHz or 8.33 kHz);
• An Ethernet interface with embedded Voice Over IP (VoIP) OTE D100 equipment series is available in both VHF and UHF
capability is available for analog modes; band.
• Legacy ACARS Ground Stations;
 The OTE D100 radio equipment series is available in the following
configurations:

• OTE DTR100 integrated transmitter and receiver

• OTE DT100 transmitter
• OTE DR100 receiver
• OTE DRR100 double receiver

The OTE D100 series has been built to achieve high flexibility
and high performances for covering all types of air traffic control
applications and facilities, from ACC systems to single airport.

OTE D100 series

Digital Radiocommunication
Equipment

OTEDR100

Main features are:

• AM-DSB modulation for voice communication;
• AM - MSK modulation for ACARS;
OTEDRR100
• Digital D8PSK modulation for VDL mode 2, GBAS/LAAS
operation, VDL mode 3;
• GFSK@19.2 kbit/s for VDL mode 4;
• Extended frequency range capability for any analog or digital
link applications without HW replacement (108 MHz to 156
MHz);
• VHF or UHF frequency range to cover civil or military
applications;
• OTE D100 modular design keeps MTTR features at the
minimum for maximum availability and optimizes spare
OTEDT100
parts management;
• Excellent collocation performances;
• Permanent built-it test equipment;
• Automatic 1+1 embedded radio+lines redundancy system
(Embedded Changeover, patent pending);
• DSP-based Noise Blanker;
• Operation with Guard Receiver.
APPLICABLE STANDARDS
Depending on operating modes, the OTE D100 series is compliant with the following international reference standards:

ENVIRONMENT

ENVIRONMENT
ANALOG

ANALOG
ACARS

ACARS
GBAS

GBAS
VDL2

VDL3

VDL4

VDL2

VDL3

VDL4
ICAO Annex 10 EUROCAE ED 23B
ICAO VDL SARPs EUROCAE ED 92
ICAO VDL2 Tech.Man. FAA-E-2938 v.3.0.
ICAO VDL3 Tech.Man. RTCA DO-186A
ICAO VDL4 Tech.Man. RTCA DO-224A
ETSI EN 300 676 RTCA DO-246A
ETSI EN 301 841-1 ARINC 618-5
ETSI EN 301 842-1 ARINC 631-4
ETSI EN 301 842-2 ARINC 750-3
ETSI EN 301 842-3 IEC 664
ETSI EN 301 489-22 CEI EN 60950 (1997-10)
CEI EN 60215 (1997-10)

INTERFACE CAPABILITY

Analog Interfaces VHF UHF

• Standard ANSI 4WE&M audio port
• Double standard ANSI 4WE&M audio ports with embedded switchover
• In Band Tone for PTT and Squelch

Digital Interfaces
• On-board IEEE802.3 10 Base T, or 100 Base T (configurable) digital interfaces for analog
and any VDL mode
• On-board IEEE802.3 10 Base T, or RS422 HDLC (configurable) digital interfaces for any VDL
mode
• E1/T1 port for VDL3 (option)
• RS232 for UTC time for VDL4 STDMA frame synchronisation source (GNSS interface)

Monitoring & Control Interfaces

• RS232 port for local facilities
• RS485 port for monitoring and control (MIRM100)
• Embedded FSK modem on audio lines for monitoring and control
• O&M Data multiplexed with VDL or VoIP Data on digital interfaces (Ethernet and RS422)

Auxiliary Interfaces
• Tx/Rx balanced recorder output
• AGC Output
• PTT activation response output
• General alarm status output
• RX muting input
• External RF switch command
• Service voltage output for external devices
TECHNICAL SPECIFICATIONS

General VHF UHF

Frequency range: 108 to 156 MHz 225 to 400 MHz

Frequency stability: < 1 ppm / < 0.3 ppm (on demand) < 1 ppm
Operating temperature range: -20° to +55°C
Supply voltage: AC: 88 to 265 VAC 50/60 Hz (full range)
DC: 21.6 to 31.2 VDC (automatic changeover on AC source failure)

Channel spacing: 25 kHz / 8.33 kHz 25 kHz

Modulation types: AM (A3E) AM (A3E)
AM-MSK @ 2.4 kbit/s
D8PSK @ 31.5 kbit/s
GFSK @ 19.2 kbit/s
Offset operation: Up to 5 carriers (AM 25KHz) Up to 4 carriers
Up to 2 carriers (AM 8.33KHz)
Preset channel: Up to 100 Up to 100
Dimensions: 19" standard rack, 3 HU, 330mm depth 19" standard rack, 3 HU, 330mm depth
Weight: 13 kg maximum 15 kg maximum

Transmitter Features VHF UHF

RF output power: 5 to 50W 5 to 30W
Duty cycle: 100 %
Output impedence: 50 ohm
VSWR: > 2:1 at full power; no damage with open/short circuit
Emissions (active mode):
spurious: < -93 dBc < -90 dBc
harmonics: < -83 dBc < -80 dBc
Audio frequency: response: 350 to 2500 Hz (8.33kHz); 300 to 3400 Hz (25kHz) 300 to 3400 Hz
input: -30 to +10 dBm -30 to +10 dBm
distortion: < 5% @ 90% mod. depth < 5% @ 90% mod. depth
noise: > 45dB @ 80% mod. depth > 45dB @ 80% mod. depth

Receiver Features VHF UHF

Input impedance: 50 ohm

Squelch types: Carrier to Noise or RSSI based, carrier override feature selectable
Sensitivity: AM: < -107dBm @ 1kHz mod. and 10dB S/N < -101dBm @ 1kHz mod. and 10dB S/N weighted
weighted to ITU-T to ITU-T
D8PSK: < -102 dBm with uncoded BER=10-3
GFSK: < -100 dBm with uncoded BER=10-4
Blocking: -7dBm @ 500kHz freq. offset -7dBm @ 1% frequency offset
Audio frequency: response: 350 to 2500 Hz (8.33kHz); 300 to 3400 Hz (25kHz) 300 to 3400 Hz
output: -30 to +10 dBm -30 to +10 dBm
distortion: < 5% @ 90% mod. depth < 5% @ 90% mod. depth
noise: > 45dB @ 80% mod. depth > 45dB @ 80% mod. depth

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