DO1TSA — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving DO1TSA, decoded by SO8OO in southeastern Poland. 7 FT8 messages attributed to this token as transmitter, on 20m, across 1 UTC dates in the available aggregate history. Last observed 2026-08-29.
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 7 FT8 messages attributed to DO1TSA 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 -11 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 7 messages
- Active dates
- 1 UTC dates
- Estimated median S/N
- -11 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 4, strong (≥ -8 dB) 2.
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 DO1TSA in decoded directed-looking exchanges:
Most frequent locator attributed to DO1TSA
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
- JO31 · 3 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,054 km (approx.)
- Last such locator decoded
- 2026-08-29 10:08 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 | DO1TSA S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-30 10:26 | 10m | - / -19 | DN9SHA | -4 / - | 2 | ✓ Closing fragment |
| 08-29 09:55 | 20m | - / - | OE8PIT | -4 / - | 2 | Partial capture |
| 08-29 09:54 | 20m | - / - | DF3IS | +4 / - | 2 | Partial capture |
| 08-29 09:48 | 20m | - / -14 | IU5HIU | -9 / - | 3 | Partial capture |
| 08-29 09:48 | 20m | -9 / +2 | RN6MA | 0 / - | 3 | ✓ Closing observed |
| 08-29 09:40 | 20m | - / -11 | RK4FF | -5 / - | 2 | ✓ Closing fragment |
| 08-29 07:50 | 20m | - / -14 | UA6YW | -5 / - | 6 | ✓ Closing fragment |
| 08-29 07:04 | 20m | - / -21 | RU3QR | -12 / - | 3 | Partial capture |
| 08-29 07:00 | 20m | - / -21 | RU3QR | -9 / - | 3 | Partial capture |
| 08-29 05:17 | 20m | - / - | UA3GX | -12 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 102615 -6 1030 DO1TSA DN9SHA -19 (x2)
UTC dB Audio Message 094115 -5 2184 DO1TSA RK4FF RR73 094815 -1 2331 DO1TSA RN6MA +02 (x2) 094845 -8 1727 DO1TSA IU5HIU JN53 094900 -9 2331 RN6MA DO1TSA 73 094915 -7 1727 DO1TSA IU5HIU JN53 (x2) 095445 +4 2332 DO1TSA DF3IS JN49 095500 -5 2329 DO1TSA OE8PIT JN66 095515 +3 2331 DO1TSA DF3IS JN49 095530 -3 2329 DO1TSA OE8PIT JN66 095730 -12 2331 US1MM DO1TSA -25 100830 -5 2330 EI5JTB DO1TSA JO31 065515 +2 2497 DO1TSA UA3GX KO92 065515 +5 2415 DO1TSA R4IK RR73
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