Calibration Schedule

Regular weekly calibration slots, published changes and the next reference transmission.

All calibration sessions use the published FMT test transmission format as a zero-offset reference signal for calibration. During the pulse and QST segments, the received frequency may differ slightly (see Rules).

FMT Test Transmission Format · FMT Reference Pulse Signal Specification

Next session 18 May 2026, 09:00 (UTC)

Weekly schedule

Baseline schedule by validity window.

Valid 1 Apr 2026 — 8 Jun 2026

  • AS / EU 20m

    Monday 09:00 UTC
    14068000 Hz SN0FMT 52.15 N, 21.05 E

  • NA / EU 20m

    Monday 15:00 UTC
    14068000 Hz SN0FMT 52.15 N, 21.05 E

  • AS / EU 40m

    Monday 19:00 UTC
    7038000 Hz SN0FMT 52.15 N, 21.05 E

  • EU 80m

    Monday 20:00 UTC
    3566000 Hz SN0FMT 52.15 N, 21.05 E

Published changes

Only exceptions, cancellations and one-off sessions are listed here.

No published changes or cancellations. Follow the recurring weekly schedule above.