SDR SRT-700

SRT-700 Family, V/UHF Airborne Transceivers

Airborne transceivers for Fixed-Wing aircraft, UAV and Helicopters. The Airborne V/UHF Radio Systems Family SRT-700 is the new family of advanced multiband, multi-mode transceivers covering the V/UHF 30MHz to 512MHz frequency band for fixed-wing and rotary-wing avionic platforms, dedicated to military and dual applications.

The SRT-700 is developed to provide aircraft with plain/secure voice/data communications facilities over an extended frequency range through external encryption unit.

Extended frequency band, 30MHz to 512MHz, in AM and FM
Compliant with ICAO annex 10 and ED23-B including FM immunity embedded
Several options for channel spacing and guard frequencies available
EPM capability by frequency hopping (Have Quick, SATURN, SINCGARS and EASY II)
Cockpit control via dedicated control panel or over the MIL-STD-1553B bus, ARINC 429 Bus or RS-485 Serial Line
Preset channels operation
Compatibility with crypto devices for operation in the base-band or diphase modes
Compatibility with Link 11 modem
Lightning indirect effect protection according to DO - 160 F level 2
Compact size and low weight
Low power consumption
Improved MTBF

Frequency Bands and Modulations

VHF VHF-FM 30 MHz to 88 MHz
VHF-AM 108 MHz to 116 MHz (Rx only)
VHF-AM 116 MHz to 156 MHz
UHF-FM 156 MHz to 174 MHz
UHF-FM/AM 225 MHz to 400 MHz
UHF-FM 400 MHz to 512 MHz

General

Preset Channels: 99
Channel Spacing: 25 kHz (15.5/8.33/5 kHz selectable)
Guard Channels: 40.5MHz; 121.5MHz; 156.8MHz and 243.0MHz automatically selected with the operating band
Emergency Frequency: 243.0MHz (military) and 121.5MHz (civil)
Frequency Stability: 1 part in 10-7
Channel Change Time: 1 ms
Power Supply Requirement +28 VDC (i.a.w. MIL-STD-704F)
Power Consumption: 120 W max (Tx) and 56 W (Rx)
Reliability: MTBF - 2500 hr AUF (40°C)

Dimensions and Weight

Dimensions (HxWxL): 126 mm x 126 mm x 245 mm
Weight Less Than: 4.5 kg

EPM Waveforms

HQ I&II: STANAG 4246
SATURN: STANAG 4372
SINCGARS: Mil-STD-188-241-1
EASY II: Proprietary algorithm

Environmental Conditions MIL-STD-810 F

Temperature: -40°C to +71°C (continuous) and -54°C to +95°C (storage)
Altitude: Up to 50,000 feet
Relative Humidity: Up to 95%

EMI Specification MIL-STD 461E

Lightning i.e. protection A2H2,2 i.a.w. DO-160F section 22

Main Receiver

Sensitivity (S+N)/N = 10dB: 0.6 μV (FM) and 1.5 μV (AM)
AM Modulation Index: 80% to 100%
Audio Output Distortion: 5%
Spurious Rejection: Better than 70 dB in NB mode for frequency differing 125 kHz
Squelch: Operating both on base band signal-to-noise ratio and RF carrier level; SNR thresholds adjustable

Guard Receiver

Sensitivity (S+N)/N = 10dB: 0.6 μV (FM) and 1.5 μV (AM)
Spurious Rejection: Better than 70 dB in NB mode for frequency differing 125 kHz
Squelch: Operating both on base band signal-to-noise ratio and RF carrier level; SNR thresholds adjustable

Transmitter

Output Power AM: 10 W
Output Power FM: 15 W
Spurious Emissions: Less than -80 dBc from 600 kHz
Distortion: 5% max
Signal/Noise Ratio: 45 dB min for m = 0.9 kHz in AM and 30 dB min at f = 6 kHz in FM