SV3CEZ — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving SV3CEZ, decoded by SO8OO in southeastern Poland. 1,529 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 49 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-07.
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 1,529 FT8 messages attributed to SV3CEZ as the transmitting token by decoded message structure across 49 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (88%), followed by 40 m (7%) and 20 m (4%). Most decodes (74%) fell within the six-hour window 22:00-04:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.
Overview
Bands
Last attributed message: 2026-10-07 02:26 UTC
Observed FT8 message patterns
- Attributed sample
- 1,529 messages
- Active dates
- 49 UTC dates
- Estimated median S/N
- -10 dB
- Estimated 10th-90th percentile
- -18 to -3.6 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 278, moderate (-15 to -9 dB) 668, strong (≥ -8 dB) 583.
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 SV3CEZ 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 SV3CEZ
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
- KM07 · 1,083 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,384 km (approx.)
- Last such locator decoded
- 2026-10-07 02:26 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 | SV3CEZ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-07 02:25 | 80m | -13 / -11 | R3UG | -4 / - | 3 | ✓ Closing observed |
| 10-07 02:20 | 80m | -16 / -17 | LB1UK | -20 / -17 | 9 | ✓ Full exchange observed |
| 10-07 02:06 | 80m | - / -17 | ES2DR | +4 / - | 2 | ✓ Closing fragment |
| 10-07 01:59 | 80m | - / -16 | SM2ODB | -6 / - | 3 | ✓ Closing fragment |
| 10-07 01:55 | 80m | -17 / -12 | DL9ATW | +15 / -8 | 4 | ✓ Full exchange observed |
| 10-07 01:53 | 80m | -16 / - | SV8TOZ | -6 / - | 3 | ✓ Closing observed |
| 10-07 01:50 | 80m | -14 / -13 | R4HHN | -7 / -5 | 4 | ✓ Full exchange observed |
| 10-07 01:45 | 80m | - / -12 | PA5MB | -8 / - | 3 | ✓ Closing fragment |
| 10-07 01:41 | 80m | - / -12 | DO1LKG | -7 / - | 3 | ✓ Closing fragment |
| 10-07 01:39 | 80m | -12 / -7 | SP1EUS | +6 / -10 | 3 | ✓ Full exchange observed |
| 10-07 01:37 | 80m | - / -2 | F5RAV | -1 / - | 3 | ✓ Closing fragment |
| 10-07 01:35 | 80m | -13 / -11 | RW9MZ | -15 / -10 | 5 | ✓ Full exchange observed |
| 10-07 01:34 | 80m | -17 / -7 | HF1Z | +7 / +1 | 5 | ✓ Full exchange observed |
| 10-06 04:20 | 80m | - / - | ON7HM | -12 / - | 2 | Partial capture |
| 10-06 04:08 | 80m | - / -9 | YO4GOU | -11 / - | 3 | ✓ Closing fragment |
| 10-06 04:01 | 80m | - / -13 | YO5OAI | +6 / - | 2 | ✓ Closing fragment |
| 10-04 03:56 | 80m | - / -16 | DO2NTC | -10 / - | 5 | Partial capture |
| 10-04 03:43 | 80m | - / -13 | ON4MAP | -9 / - | 5 | ✓ Closing fragment |
| 10-04 03:31 | 80m | - / -19 | DO9ST | +2 / - | 2 | ✓ Closing fragment |
| 10-04 03:22 | 80m | - / - | DO2ZZ | -4 / - | 2 | ✓ Closing fragment |
| 10-04 02:51 | 40m | - / -22 | UG4P | -14 / - | 2 | ✓ Closing fragment |
| 10-03 03:55 | 40m | - / -19 | F4NJZ | -11 / - | 3 | ✓ Closing fragment |
| 10-03 03:43 | 40m | - / - | F3CJ | -13 / - | 4 | Partial capture |
| 10-03 03:40 | 80m | - / -10 | DO5AX | -14 / - | 2 | Partial capture |
| 10-03 03:34 | 80m | -12 / - | DO5AX | -8 / -18 | 6 | Partial capture |
| 10-03 03:26 | 80m | - / - | ON4MAP | -9 / - | 2 | Partial capture |
| 10-03 03:25 | 80m | -13 / -19 | ON1JP | -12 / -14 | 12 | ✓ Full exchange observed |
| 10-03 03:20 | 80m | -13 / -10 | DL6RS | +3 / -9 | 6 | ✓ Full exchange observed |
| 10-03 03:20 | 80m | -12 / - | HA8LD | -15 / -9 | 3 | ✓ Closing observed |
| 10-03 03:18 | 80m | -12 / - | SV2BWY | 0 / - | 2 | ✓ Closing observed |
| 10-03 03:16 | 80m | - / -8 | LZ2ZG | -1 / - | 3 | ✓ Closing fragment |
| 10-02 04:15 | 40m | - / -20 | EA2EWL | -16 / - | 6 | Partial capture |
| 10-02 04:09 | 40m | - / - | SV3AUW | -4 / - | 2 | Partial capture |
| 10-02 04:05 | 40m | - / - | G4KRF | -15 / - | 2 | Partial capture |
| 10-01 21:29 | 80m | -12 / -6 | EB5GIE | -8 / +1 | 3 | ✓ Full exchange observed |
| 10-01 21:26 | 80m | -13 / - | PA4MRS | - / -1 | 2 | ✓ Closing fragment |
| 10-01 21:23 | 80m | -16 / -13 | SP4JSR | +9 / -8 | 5 | ✓ Full exchange observed |
| 10-01 21:21 | 80m | -11 / -6 | EW8DU | -3 / -10 | 3 | ✓ Full exchange observed |
| 10-01 21:15 | 80m | -20 / - | YO8BBU | -6 / -10 | 3 | Partial capture |
| 10-01 21:04 | 40m | - / -5 | DK9CK | -1 / - | 3 | ✓ Closing fragment |
| 10-01 20:32 | 40m | - / -8 | HB9HGH | 0 / - | 2 | Partial capture |
| 10-01 20:30 | 40m | -19 / - | F4MXE | - / -6 | 3 | Partial capture |
| 10-01 20:04 | 40m | - / - | DL6RS | +14 / - | 2 | Partial capture |
| 10-01 19:56 | 40m | - / - | DL6RS | +16 / - | 4 | Partial capture |
| 10-01 19:53 | 40m | - / - | PA2IPA | -14 / - | 4 | ✓ Closing fragment |
| 10-01 19:51 | 40m | -15 / -10 | DH7OL | +6 / +2 | 3 | Partial capture |
| 10-01 19:38 | 40m | - / -25 | M0WOO | -14 / - | 4 | ✓ Closing fragment |
| 09-29 04:10 | 160m | - / -15 | IW5ABF | -6 / - | 4 | ✓ Closing fragment |
| 09-29 03:55 | 40m | -22 / - | G6WCX | -11 / -17 | 4 | Partial capture |
| 09-29 03:43 | 40m | -15 / - | RN3YN | - / -17 | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 022045 -18 1707 LB1UK SV3CEZ -17 (x4) 022230 -22 2059 SV3CEZ LB1UK R-17 022245 -12 1707 LB1UK SV3CEZ -17 (x2) 022330 -20 2059 SV3CEZ LB1UK R-17 (x2) 022415 -16 1708 CQ SV3CEZ KM07 (x2) 022500 -4 1707 SV3CEZ R3UG KO98 (x2) 022545 -13 1708 R3UG SV3CEZ RR73 022615 -16 1707 CQ SV3CEZ KM07
UTC dB Audio Message 034430 -15 2102 SV3CEZ F3CJ JO10 034715 -22 2124 CQ SV3CEZ KM07 (x2) 034900 -19 2123 SV3CEZ F/ON4YI/P -14 034915 -23 2124 CQ SV3CEZ KM07 (x3) 035500 -13 2476 SV3CEZ F4NJZ JN25 (x3) 025130 -15 1828 SV3CEZ UG4P -22 (x2) 030215 -21 1557 SP5DUJ SV3CEZ RR73 030245 -20 1557 CQ SV3CEZ KM07 (x2)
UTC dB Audio Message 041030 -5 1340 SV3CEZ IW5ABF JN53 (x4)
UTC dB Audio Message 161700 -10 2821 SV3CEZ JI3CEY PM74 (x6) 162200 +5 1584 SV3CEZ DL2GKW JN47 162430 -7 478 SV3CEZ HB9IUI JN36 165300 -23 1976 SV3CEZ DL6RS JN48 165500 -4 1511 SV3CEZ EA7HTE IM66 (x4) 165715 -24 1311 CQ SV3CEZ KM07 (x2)
UTC dB Audio Message 024100 -15 1208 SV3CEZ 4Z4DX KM72
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.
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee