Learn about our work on the digital microwave broadband transponder for amateur radio.
All work is donated to the general public as open source.
This digital multiplexing transponder is a regenerative design, taking full advantage of a wide variety of cutting edge technology, intended for amateur radio use in space and terrestrial deployments.
This review focuses on decisions made for the prototype board set that implements the transmitter side of the payload.
Comment and critique welcome and encouraged.
Here is our grant proposal for Rent-a-GEO. The intended audience for this proposal is ARDC, ARRL, and FEMA.
This project provides a way for amateur radio operators to communicate through a geosynchronous satellite over the continental US, parts of Canada, and parts of Mexico.
There are two main purposes served by this communications project. First is enhanced emergency communications support from amateur radio. Second is research and development of open source hardware that implements advanced digital communications functions.
Functions include field-configurable polyphase filterbank channelizers, queueing and multiplexing functions, digital signal processing, open source implementations of current communications protocols, and geosynchronous satellite communications best practices.
Phase 4 Ground has had some good results with the RFNoC polyphase filterbank from Theseus Cores. Here’s our update on this week’s work!