SH5JRM — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving SH5JRM, decoded by SO8OO in southeastern Poland. 6 FT8 messages attributed to this token as transmitter, on 40m, across 1 UTC dates in the available aggregate history. Last observed 2026-09-20.
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 6 FT8 messages attributed to SH5JRM as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was -9 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 6 messages
- Active dates
- 1 UTC dates
- Estimated median S/N
- -9 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) 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 SH5JRM in decoded directed-looking exchanges:
Most frequent locator attributed to SH5JRM
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
- JO78 · 2 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,048 km (approx.)
- Last such locator decoded
- 2026-09-20 18:08 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 | SH5JRM S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-20 18:26 | 40m | - / -13 | OZ9FF | 0 / - | 2 | ✓ Closing fragment |
| 09-20 18:14 | 40m | -10 / +9 | HB9ELE | +11 / -9 | 4 | ✓ Full exchange observed |
| 09-20 18:12 | 40m | - / -15 | UT7NI | +8 / - | 2 | ✓ Closing fragment |
| 09-20 18:07 | 40m | -9 / -7 | DL9KM | -2 / - | 6 | ✓ Closing observed |
| 09-20 18:06 | 40m | -10 / - | M7EJN | - / -9 | 2 | Partial capture |
| 09-20 17:58 | 40m | - / - | F6FHZ | -12 / - | 2 | Partial capture |
| 07-19 11:26 | 20m | - / +6 | UT7UJ | +2 / - | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 180745 +3 1708 SH5JRM DL9KM JN68 (x2) 180830 -8 2315 OZ9FF SH5JRM JO78 180845 -4 1708 SH5JRM DL9KM JN68 (x2) 180930 -9 2316 DL9KM SH5JRM RR73 180945 -4 1709 SH5JRM DL9KM 73 181200 +9 937 SH5JRM UT7NI -15 (x2) 181415 +11 695 SH5JRM HB9ELE +09 181430 -9 694 HB9ELE SH5JRM R-09 181445 +11 695 SH5JRM HB9ELE RR73 181500 -10 694 HB9ELE SH5JRM 73 182645 +1 2316 SH5JRM OZ9FF -13 (x2)
UTC dB Audio Message 112600 +3 2091 SH5JRM UT7UJ +06 (x3) 113645 -13 1187 SH5JRM M7JVT -09 152130 -14 565 SH5JRM M3WHB -18 154715 -20 1213 SH5JRM 3A2MW -12
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