SP6GCU — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving SP6GCU, decoded by SO8OO in southeastern Poland. 421 FT8 messages attributed to this token as transmitter, on 80m, 20m, across 60 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-19.
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 421 FT8 messages attributed to SP6GCU as the transmitting token by decoded message structure across 60 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (95%), followed by 20 m (5%). Most decodes (54%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (98%); the estimated median was +14.1 dB.
Overview
Bands
Last attributed message: 2026-09-19 02:12 UTC
Observed FT8 message patterns
- Attributed sample
- 421 messages
- Active dates
- 60 UTC dates
- Estimated median S/N
- +14.1 dB
- Estimated 10th-90th percentile
- +5 to +22 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 6, strong (≥ -8 dB) 414.
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 SP6GCU 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 SP6GCU
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
- JO90 · 30 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 208 km (approx.)
- Last such locator decoded
- 2026-09-18 17:24 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 | SP6GCU S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-19 02:10 | 80m | +5 / - | HI8R | - / -9 | 3 | ✓ Closing fragment |
| 09-19 02:06 | 80m | +7 / - | HI8R | - / -9 | 3 | Partial capture |
| 09-19 02:01 | 80m | +10 / - | HI8R | - / -20 | 2 | Partial capture |
| 09-18 17:23 | 80m | +15 / - | ZL2NU | - / - | 2 | Partial capture |
| 09-16 04:03 | 80m | +12 / - | W4WFC | - / -22 | 2 | Partial capture |
| 09-13 04:14 | 80m | +8 / -3 | OM6APJ | +20 / -1 | 5 | ✓ Full exchange observed |
| 09-13 04:14 | 80m | - / - | ON4MAP | -11 / - | 6 | Partial capture |
| 09-11 03:33 | 80m | +10 / - | HK3O | - / -15 | 4 | Partial capture |
| 09-11 03:16 | 80m | +6 / - | KZ7Y | - / -9 | 2 | Partial capture |
| 09-11 03:08 | 80m | +14 / - | KO3ZDE | - / -9 | 2 | Partial capture |
| 09-11 02:50 | 80m | +14 / - | W9HT | - / -9 | 2 | Partial capture |
| 09-11 02:00 | 80m | - / - | G3WGC | +9 / - | 8 | Partial capture |
| 09-11 01:59 | 80m | +14 / +1 | 9A3AUH | +8 / - | 4 | ✓ Closing observed |
| 09-11 01:58 | 80m | +10 / - | VE2WNF | - / -12 | 3 | ✓ Closing fragment |
| 09-11 01:55 | 80m | +16 / - | KY2J | - / -15 | 2 | Partial capture |
| 09-10 18:06 | 80m | +16 / - | R4HHN | -7 / -4 | 3 | ✓ Closing observed |
| 09-09 00:33 | 80m | +11 / - | W4IPC | - / -9 | 4 | Partial capture |
| 09-08 04:07 | 80m | +16 / - | N1WI | - / -13 | 2 | ✓ Closing fragment |
| 09-08 03:54 | 80m | +14 / - | J38DX | - / -19 | 2 | ✓ Closing fragment |
| 09-08 03:49 | 80m | +14 / - | J38DX | - / -19 | 4 | Partial capture |
| 09-06 20:29 | 80m | +10 / - | RN3YN | - / -9 | 2 | ✓ Closing fragment |
| 09-06 02:40 | 80m | +20 / - | RV3SBS/P | -6 / -2 | 3 | ✓ Closing observed |
| 09-06 02:30 | 80m | +18 / - | N7JB | - / -10 | 2 | Partial capture |
| 09-06 01:26 | 80m | +24 / - | N7GR | - / -5 | 2 | Partial capture |
| 09-04 18:34 | 80m | +8 / - | JI3VUB | - / -17 | 2 | Partial capture |
| 09-04 18:32 | 80m | +16 / - | RA9SOZ | -11 / -9 | 3 | ✓ Closing observed |
| 09-03 03:35 | 80m | +21 / - | W9HT | - / +1 | 3 | Partial capture |
| 09-03 03:23 | 80m | +16 / - | R9CS/P | - / -11 | 2 | ✓ Closing fragment |
| 09-02 19:17 | 80m | +11 / - | JA4TKY | - / -16 | 2 | Partial capture |
| 08-30 17:17 | 80m | +20 / - | V51RM | - / -11 | 2 | Partial capture |
| 08-30 17:16 | 80m | +10 / - | YE6YE | - / -17 | 2 | Partial capture |
| 08-30 17:10 | 20m | - / - | PE9JAN | +1 / - | 3 | Partial capture |
| 08-30 08:56 | 20m | -7 / - | TA2NJH | - / -16 | 4 | ✓ Closing fragment |
| 08-30 08:06 | 20m | - / - | RZ4FWA | -12 / - | 3 | Partial capture |
| 08-30 04:31 | 20m | - / -13 | R2SBI | -16 / - | 2 | ✓ Closing fragment |
| 08-30 03:49 | 80m | +12 / - | PY4QQ | - / -13 | 2 | ✓ Closing fragment |
| 08-30 03:49 | 80m | - / - | G8OO | -3 / - | 9 | Partial capture |
| 08-30 03:47 | 80m | +12 / - | W4KFC | - / -13 | 3 | ✓ Closing fragment |
| 08-30 03:46 | 80m | +12 / -11 | AA3B | -10 / -7 | 4 | ✓ Full exchange observed |
| 08-29 22:46 | 80m | +10 / - | YB5QZ | - / -17 | 2 | Partial capture |
| 08-29 21:51 | 80m | - / - | SP6FME | +12 / - | 3 | Partial capture |
| 08-29 21:51 | 80m | +17 / +4 | SP6LUV | +14 / 0 | 4 | ✓ Full exchange observed |
| 08-29 21:48 | 80m | +15 / +3 | RD2T | -20 / -19 | 2 | Partial capture |
| 08-29 03:44 | 80m | +19 / - | WB7PHM | - / -11 | 5 | Partial capture |
| 08-29 03:41 | 80m | +21 / -13 | KQ4W | -9 / -9 | 5 | ✓ Full exchange observed |
| 08-29 03:36 | 80m | +23 / -8 | KF4JHG | -16 / -10 | 7 | ✓ Full exchange observed |
| 08-29 03:25 | 80m | +18 / - | HC1BG | - / -14 | 2 | Partial capture |
| 08-29 02:53 | 80m | +19 / - | N8NN | - / -16 | 2 | ✓ Closing fragment |
| 08-29 02:47 | 80m | +18 / -24 | WA4BRX | -15 / -13 | 3 | ✓ Full exchange observed |
| 08-29 02:43 | 80m | +22 / - | RA3VMK/P | - / -7 | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 041615 -8 1343 SP6GCU ON4MAP JO20 (x2) 035100 +8 2254 N0YO SP6GCU -14 040315 +15 2104 W4WFC SP6GCU -22 (x2) 172330 +20 553 ZL2NU SP6GCU JO90 (x2) 020130 +11 2155 HI8R SP6GCU -20 (x8)
UTC dB Audio Message 182130 -6 2394 SP6GCU TA2ED RR73 182230 -9 2395 SP6GCU F5PBG IN78 043145 -16 1079 SP6GCU R2SBI R-13 (x2) 080630 -12 2068 SP6GCU RZ4FWA LO23 (x3) 085615 -2 2780 TA2NJH SP6GCU -16 (x4) 090100 -9 2778 OY1HJ SP6GCU -11 171030 +3 1697 SP6GCU PE9JAN JO22 (x3)
UTC dB Audio Message 182015 -15 775 SP6GCU IZ4JMA JN54 194530 -9 719 SP6GCU HB0/OI5AY R+07 054100 -10 1242 SP6GCU EX7CQ RR73 170545 -11 923 SP6GCU A41ZZ -12 073815 -4 2954 SP6GCU DO1FDK JO41 (x2) 194600 -8 2542 SP6GCU DN9AD JO52 193715 -17 1812 SP6GCU ON1BH +01 065930 -20 2044 SP6GCU PD1ADA R-06 203330 -18 1145 SP6GCU PY9AA RR73 151215 -11 713 SP6GCU F4GUK R+17 181800 -16 1530 SP6GCU RK6OQ R+03 (x2) 133115 -10 728 SP6GCU LZ3CB KN32 (x2)
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.
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