M1RTB — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving M1RTB, decoded by SO8OO in southeastern Poland. 19 FT8 messages attributed to this token as transmitter, on 20m, across 1 UTC dates in the available aggregate history. Last observed 2026-08-30.
These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.
SO8OO decoded 19 FT8 messages attributed to M1RTB as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was +12 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 19 messages
- Active dates
- 1 UTC dates
- Estimated median S/N
- +12 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 19.
WSJT-X defines S/N reports against a 2,500 Hz reference noise bandwidth. The ranges above are SO8OO receiver-side display categories, not official WSJT-X classes, transmitter-power measurements or estimates of how easy the station is to hear elsewhere. Statistics include only successful decodes on SO8OO's monitored FT8 channels; transmissions that were not decoded are absent. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with M1RTB in decoded directed-looking exchanges:
Most frequent locator attributed to M1RTB
The map compares the centres and boundaries of the locator field attributed to this token by decoded message structure, 2° × 1° as a Maidenhead square, and SO8OO's six-character receiver square. The separation is not an exact antenna-to-antenna distance or a radio-path length.
- Attributed locator
- IO83 · 8 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,744 km (approx.)
- Last such locator decoded
- 2026-08-30 12:36 UTC
A decoded locator can describe portable, remote or special-event operation and is not proof of a permanent station address or transmitter identity.
Observed FT8 exchanges
S/N cells show: decoded at SO8OO / report transmitted by the counterpart. An observed exchange is not a QSL or an official logbook confirmation.
| Time UTC | Band | M1RTB S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-31 18:07 | 40m | - / - | F5PBG | +2 / - | 4 | Partial capture |
| 08-31 18:06 | 40m | - / -15 | G8KHF | 0 / - | 2 | ✓ Closing fragment |
| 08-30 12:36 | 20m | +9 / - | DB1EF | - / -3 | 2 | ✓ Closing fragment |
| 08-30 12:36 | 20m | +10 / - | R4CCE | +4 / +6 | 4 | Partial capture |
| 08-30 12:33 | 20m | - / - | OE9GWV | -6 / - | 4 | Partial capture |
| 08-30 12:33 | 20m | +12 / - | SG3A | +2 / +4 | 6 | ✓ Full exchange observed |
| 08-30 12:30 | 20m | +11 / -4 | TA2CD | -7 / +2 | 9 | ✓ Full exchange observed |
| 08-20 19:48 | 20m | - / -10 | DK7ZT | -7 / - | 3 | ✓ Closing fragment |
| 08-20 19:46 | 20m | - / -10 | DK4RH | -8 / - | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 200200 -11 776 M1RTB M6WRB -05 180630 +0 649 M1RTB G8KHF -15 (x2) 180730 +1 2843 M1RTB F5PBG IN78 (x4)
UTC dB Audio Message 123400 -12 2683 M1RTB OE9GWV JN47 123415 +13 321 SG3A M1RTB RR73 123430 -3 583 M1RTB SG3A 73 123430 -3 2683 M1RTB OE9GWV JN47 123445 +15 321 CQ M1RTB IO83 a1 (x3) 123600 +5 321 M1RTB R4CCE LO21 123600 -3 2216 M1RTB IQ4JO JN63 123615 +18 321 CQ M1RTB IO83 123630 +3 321 M1RTB R4CCE LO21 123645 +12 321 DB1EF M1RTB -03 (x2) 123745 +8 321 R4CCE M1RTB +06 (x2)
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