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.

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SRT-700
  • Key Features
  • Technical Specifications
  • 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

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