Aphelion Relayshared ground-station passes

UHF and S-band ground-station time, billed by the pass. We point antennas so you don't have to ship hardware.

Wind-down notice (2026-Q1): Aphelion Relay is no longer accepting new operator accounts. Existing scheduled passes will be honored through the end of the current billing cycle. See the about page for details and contractual offboarding instructions.

What we do

You hand us a TLE and a target frequency. We hand you back a packet capture from the next visible pass over one of our ground sites in central Europe. Schedule via REST, pull captures via signed URL, repeat.

Coverage

Three primary sites: Cluj (RO), Brno (CZ), and a partner antenna in Tartu (EE). Backup VHF site in the Banat region for opportunistic captures.

Bands

Full-duplex UHF (435–438 MHz) and S-band downlink (2200–2290 MHz). No X-band; talk to us if you need it and we will refer you to a partner.

Endpoints (deprecated)

POST /api/v1/tle/push
POST /api/v1/passes/schedule
GET  /api/v1/passes/{id}
GET  /uploads/{year}/groundstation_logs/

As of 2026-Q1 these endpoints return 410 Gone. Operators with active credentials should migrate captures off our object storage before service termination.