VHF uplink/UHF downlink Full Duplex Transceiver

Price on request

  • Full duplex communication
  • Data rate re-configurable in-flight
  • Frequency re-configuration in-flight
  • FM transponder mode available
  • Safety watchdog
  • Low power consumption
  • Single PCB radio
  • Single board Telemetry, Telecommand and Beacon capabilities

Option sheet

SKU: 100010 Category:
Flight Heritage since 2016


The VHF uplink/UHF downlink transceiver is a full-duplex communication system for CubeSat TT&C applications. The radio can operate in commercial and amateur bands of the VHF/UHF frequency spectrum. It is low power, low mass, and highly configurable, offering the flexibility of changing data rates and frequencies in flight. This radio is tailored for CubeSat missions and cross-compatible with other subsystems such as onboard computers and antenna systems. Flight proven since 2016.



Dimensions: 90 x 96 x 15 mm
Mass: 75g
Supply voltage range: 6.5 – 20 V DC
Power consumption: 0.48W (receiver only)
4 W (transmitter on)
Operating temperature: -20 to +60 deg C
RF interfaces:: MMCX (50 ohm)
Data interfaces: I2C



Frequency range: 435 – 438 MHz or 400.15 – 402 MHz. Other ranges available on request
Transmit power: 27 dBm
Modulation options: Binary Phase Shift Keying (BPSK) with G3RUH scrambling
Gaussian Minimum Shift Keying (GMSK) with G3RUH scrambling
Data rate selectable: 1200, 2400, 4800 and 9600 bps
Datalink layer protocol: AX.25 or HDLC


Frequency range: 145.8-146MHz and 148-150.05MHz
Modulation: Frequency Shift Keying (FSK) with G3RUH scrambling
Data rate: 9600 bps
Sensitivity: -104 dBm Sensitivity for BER 1E-5
Data link layer protocol: AX.25



  • Receiver/Transmitter operating frequency
  • Downlink data rate
  • Custom beacon message (AX.25)
  • CSKB connector type and location
  • RF connector position and orientation
  • I2C watchdog implementation


Qualification and Acceptance testing

Test QT AT
Mechanical Shock
Thermal Cycling
Thermal Vacuum

*QT is performed on the design/qualification model
*AT is performed on the unit to be shipped