SM4UEF — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving SM4UEF, decoded by SO8OO in southeastern Poland. 346 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 30 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-10-18.
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 346 FT8 messages attributed to SM4UEF as the transmitting token by decoded message structure across 30 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (59%), followed by 80 m (21%) and 20 m (18%). The busiest six-hour window was 16:00-22:00 UTC, containing 47% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (68%); the estimated median was -4.7 dB.
Overview
Bands
Last attributed message: 2026-10-18 09:05 UTC
Observed FT8 message patterns
- Attributed sample
- 346 messages
- Active dates
- 30 UTC dates
- Estimated median S/N
- -4.7 dB
- Estimated 10th-90th percentile
- -13 to +11 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 24, moderate (-15 to -9 dB) 87, strong (≥ -8 dB) 235.
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.
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with SM4UEF in decoded directed-looking exchanges:
Attributed messages by UTC hour
Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.
Most frequent locator attributed to SM4UEF
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
- JP70 · 180 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,249 km (approx.)
- Last such locator decoded
- 2026-10-18 09:03 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 | SM4UEF S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-18 09:02 | 40m | -8 / - | YJ8RN | - / - | 4 | ✓ Closing fragment |
| 10-18 07:32 | 40m | -12 / - | J88IH | - / -18 | 2 | ✓ Closing fragment |
| 10-18 07:28 | 40m | -11 / - | <...> | - / -8 | 2 | Partial capture |
| 10-18 04:27 | 80m | +9 / - | KY4WI | - / - | 4 | Partial capture |
| 10-18 04:22 | 80m | 0 / - | R2AL | +6 / -1 | 5 | ✓ Full exchange observed |
| 10-18 04:21 | 80m | -1 / +5 | IZ8XXE | +3 / -1 | 5 | ✓ Full exchange observed |
| 10-18 04:20 | 80m | -4 / - | KE2FP | - / - | 3 | Partial capture |
| 10-18 04:11 | 80m | +6 / - | DK8HC | - / -5 | 2 | ✓ Closing fragment |
| 10-18 04:09 | 80m | -8 / +5 | GU4WRP | 0 / +4 | 5 | ✓ Full exchange observed |
| 10-18 03:47 | 40m | -11 / +4 | R2EA/P | -12 / -9 | 3 | Partial capture |
| 10-18 03:45 | 40m | -9 / - | EB3JT | -5 / -4 | 3 | ✓ Closing observed |
| 10-18 03:44 | 40m | -9 / +2 | EA6LU | -4 / 0 | 5 | ✓ Full exchange observed |
| 10-18 03:32 | 40m | - / - | UT2AU | +2 / - | 2 | Partial capture |
| 10-18 03:29 | 40m | -6 / 0 | F6FHZ | -12 / - | 3 | ✓ Closing observed |
| 10-18 03:26 | 40m | -10 / - | XE1PM | - / -19 | 2 | Partial capture |
| 10-18 03:25 | 40m | - / - | F6FHZ | -9 / - | 2 | Partial capture |
| 10-17 19:57 | 40m | +18 / - | S79VU | - / -6 | 4 | ✓ Closing fragment |
| 10-16 16:25 | 40m | +8 / - | R2EA/P | - / -5 | 2 | ✓ Closing fragment |
| 10-16 16:24 | 40m | +9 / -1 | OD5ZF | -4 / -5 | 5 | ✓ Full exchange observed |
| 10-10 13:45 | 40m | -2 / - | HS7WMU | - / - | 2 | Partial capture |
| 10-10 13:43 | 40m | -9 / - | R2AL | -8 / +1 | 4 | Partial capture |
| 10-10 13:41 | 40m | - / +8 | HB9DKG | -8 / - | 6 | ✓ Closing fragment |
| 10-10 13:39 | 40m | -8 / - | UN7LEW | - / -2 | 4 | ✓ Closing fragment |
| 10-10 04:50 | 80m | +8 / - | KY2J | - / - | 2 | Partial capture |
| 10-10 04:47 | 40m | +5 / - | TI5GAX | - / - | 2 | Partial capture |
| 10-10 04:43 | 40m | - / -1 | IK4JPP | -8 / - | 2 | ✓ Closing fragment |
| 10-10 04:35 | 40m | - / -7 | IK4JPP | -9 / - | 2 | Partial capture |
| 10-10 03:49 | 80m | +4 / - | HK3G | - / - | 2 | Partial capture |
| 10-09 22:23 | 40m | -10 / - | F4LSG | -13 / -10 | 2 | Partial capture |
| 10-09 22:22 | 40m | -4 / - | A71AH | - / -11 | 2 | ✓ Closing fragment |
| 10-09 22:11 | 40m | -12 / - | EY7BM | - / - | 2 | Partial capture |
| 10-09 22:05 | 40m | -6 / - | EA3HMM | -4 / -12 | 4 | Partial capture |
| 10-09 22:05 | 40m | -9 / +1 | DG6VC | -11 / - | 5 | ✓ Closing observed |
| 10-09 22:04 | 40m | -8 / - | IK4TVP | -18 / +1 | 3 | ✓ Closing observed |
| 10-09 22:02 | 40m | -4 / - | JY5IB | - / -5 | 3 | ✓ Closing fragment |
| 10-09 22:00 | 40m | -8 / - | EB3WH | -1 / +2 | 2 | ✓ Closing observed |
| 10-09 21:57 | 40m | -9 / -8 | UR9QQ | +2 / - | 4 | ✓ Closing observed |
| 10-09 21:54 | 40m | -9 / - | F4GIH | - / -19 | 3 | ✓ Closing fragment |
| 10-09 21:53 | 40m | -10 / - | LU2DGZ | - / -11 | 2 | ✓ Closing fragment |
| 10-09 21:52 | 40m | - / - | UR9QQ | -6 / - | 2 | Partial capture |
| 10-09 21:51 | 40m | -12 / +1 | ON1BH | -15 / -1 | 3 | ✓ Full exchange observed |
| 10-09 21:48 | 40m | -6 / - | CX6TU | - / - | 4 | ✓ Closing fragment |
| 10-06 05:25 | 80m | +4 / - | KP2B | - / - | 3 | Partial capture |
| 10-06 05:19 | 40m | +10 / - | PY2DPM | - / -10 | 2 | ✓ Closing fragment |
| 10-06 05:19 | 40m | +8 / - | IK6DLK | -5 / -6 | 7 | ✓ Full exchange observed |
| 10-06 05:19 | 40m | +12 / -2 | YO6LM | -2 / - | 2 | ✓ Closing observed |
| 10-06 05:18 | 40m | - / - | IZ4JMA | -10 / - | 2 | Partial capture |
| 10-06 05:15 | 40m | +14 / +10 | EA5FD | -14 / +1 | 4 | ✓ Full exchange observed |
| 10-06 05:15 | 40m | +8 / - | F6FDY | -8 / +2 | 8 | ✓ Closing observed |
| 10-06 05:15 | 40m | - / - | IK6DLK | -1 / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 034630 -7 284 EB3JT SM4UEF RR73 034730 -11 284 R2EA/P SM4UEF JP70 034745 -12 1100 SM4UEF R2EA/P +04 034800 -11 284 R2EA/P SM4UEF R-09 040315 -16 242 EL2BG SM4UEF R-15 072845 -11 264 <...> SM4UEF JP70 (x2) 073245 -13 264 J88IH SM4UEF R-18 (x2) 090245 -8 2645 YJ8RN SM4UEF JP70 (x4) 090500 +1 2650 SM4UEF UT2SQ KN29 090545 -10 2644 GJ0KYZ SM4UEF 73
UTC dB Audio Message 042130 -1 214 IZ8XXE SM4UEF JP70 042145 +2 2227 SM4UEF IZ8XXE +05 042200 -1 214 IZ8XXE SM4UEF R-01 042215 +4 2227 SM4UEF IZ8XXE RR73 042230 -1 214 IZ8XXE SM4UEF 73 042245 +6 669 SM4UEF R2AL KO85 042300 -1 214 R2AL SM4UEF -01 042315 +3 669 SM4UEF R2AL R+21 042330 +0 214 R2AL SM4UEF RR73 042345 +10 669 SM4UEF R2AL 73 042545 +12 2422 KS4YT SM4UEF JP70 042715 +11 2422 KY4WI SM4UEF JP70 (x4)
UTC dB Audio Message 185715 -2 501 5A1AL SM4UEF JP70 (x4) 120515 -2 2969 SM4UEF 9J2FI RR73
UTC dB Audio Message 204730 -9 379 JA3HDM SM4UEF R-06 (x2) 144445 -5 308 3B8HK SM4UEF JP70 (x3) 163115 -12 353 7Z1BQ SM4UEF JP70 (x2) 164945 +1 2920 SM4UEF DL1FOB JO63 (x6) 165845 -10 365 W8DOD SM4UEF JP70 170430 -6 324 WY0V SM4UEF JP70
Decoder S/N history by band
Count-weighted daily averages across messages attributed to this profiled token and successfully decoded at SO8OO, limited to the rolling 90-day UTC chart window.
CW
No CW receptions recorded for this callsign in the last 30 days.
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