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Ham Satellite news Telemetry

UMKA-1 SSTV over Stockholm 2025-08-30

The UMKA-1 satellite has turned on it’s SSTV transmission on 437.625 MHz FM Robot 36-mode. Strong downlink that should be possible to receive with a simple yagi without elevation.

Equipment used:

  • RX at 437.625 MHz FM
  • 2 x 13 el LFA X-Yagi (InnovAntenna) on at horizontal polarisation during this pass
  • AlfaSpid RAS az/el rotor
  • LNA Mini-70 from SHF Elektronik
  • LMR-400 coax
  • RTL-SDR v3
  • SDR-Console v3 with doppler correction of downlink and satellite tracking, rotor control
  • PstRotator for rotor control interface between SDR-Console and RAS controller
  • RX-SSTV v2.1.5
  • VB-Cable: virtual audio cable for piping audio from SDR Console to RX-SSTV. Set to 96 kHz and 16 bit.

Short video from the pass:

By SM0TGU

Webmaster and member of the AMSAT-SM steering group.

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