# ISIS VHF/UHF Full Duplex Transceiver
*component . products*

The ISIS VHF/UHF full-duplex transceiver is a CubeSat TT&C communications subsystem offered in UHF-uplink/VHF-downlink and VHF-uplink/UHF-downlink variants.

## Specifications
- **manufacturer**: isispace
- **deployment context**: orbital
- **entity type**: component
- **last verified date**: 2026-05-28
- **verified by**: operator
- **claim status**: unclaimed
- **subtype**: comms-ttc
- **provider**: isispace
- **attributes**: {"kind":"component","product_status":null,"manufacturer":"isispace","description":"The ISIS VHF/UHF full-duplex transceiver is a CubeSat TT&C communications subsystem offered in UHF-uplink/VHF-downlink and VHF-uplink/UHF-downlink variants.","sensor":null,"bus":null,"ground_segment":null,"launcher":null,"analysis_service":null,"deployment_context":"orbital"}

## Editorial
The ISIS VHF/UHF Full Duplex Transceiver (TRXUV/TRXVU) is a CubeSat TT&C communications subsystem providing full-duplex telemetry, telecommand, and beacon operation on commercial and amateur VHF/UHF bands.[^vhf-uhf-transceiver-brochure] The product is available in UHF-uplink/VHF-downlink and VHF-uplink/UHF-downlink configurations, with in-flight reconfigurable data rates and frequencies, and an FM transponder mode.[^vhf-uhf-transceiver-brochure] Flight heritage dates from 2016 per the ISISPACE brochure.[^vhf-uhf-transceiver-brochure]

Representative frequency ranges from the 2021 ISISPACE products brochure show the transmitter operating at 435-438 MHz or 400.15-402 MHz and the receiver operating at 145.8-146 MHz and 148-150.05 MHz, with the specific frequency plan determined by the selected uplink/downlink and regulatory band configuration.[^isispace-products-brochure-2021]

The unit draws 0.48 W in receiver-only mode and 4 W with the transmitter active, operating from a 6.5-20 V DC supply.[^vhf-uhf-transceiver-brochure] Mass is 75 g and the board dimensions are 90 x 96 x 15 mm.[^vhf-uhf-transceiver-brochure] RF interfaces use MMCX connectors at 50 ohm, and the data interface is I2C.[^vhf-uhf-transceiver-brochure] Operating temperature range is -20 to +60 deg C.[^vhf-uhf-transceiver-brochure]

## Sources
- [vhf-uhf-transceiver-brochure] | ISIS VHF/UHF duplex transceiver brochure | https://www.isispace.nl/wp-content/uploads/2016/02/VHF-UHF-Full-Duplex-Transceiver-Brochure-web.pdf | tier=operator-datasheet | accessed=2026-05-28
- [isispace-products-brochure-2021] | ISISPACE Products brochure 2021 | https://www.isispace.nl/wp-content/uploads/2021/08/ISISPACE-Products-brochure-2021.pdf | tier=operator-datasheet | accessed=2026-05-28

---
Source: https://eo-atlas.org/products/component/isis-vhf-uhf-full-duplex-transceiver
Maintainer: SpectraWorks B.V. (CC-BY 4.0)