SP4TKA — 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 SP4TKA, decoded by SO8OO in southeastern Poland. 1,319 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 61 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-08-28.
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 1,319 FT8 messages attributed to SP4TKA as the transmitting token by decoded message structure across 61 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (91%), followed by 20 m (9%). Most decodes (58%) 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 (74%); the estimated median was -4.9 dB.
Overview
Bands
Last attributed message: 2026-08-28 04:54 UTC
Observed FT8 message patterns
- Attributed sample
- 1,319 messages
- Active dates
- 61 UTC dates
- Estimated median S/N
- -4.9 dB
- Estimated 10th-90th percentile
- -12 to +5 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 47, moderate (-15 to -9 dB) 301, strong (≥ -8 dB) 971.
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 SP4TKA 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 SP4TKA
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
- KO14 · 886 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 514 km (approx.)
- Last such locator decoded
- 2026-08-28 04:54 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 | SP4TKA S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-22 19:15 | 40m | - / -13 | M1DBW | -3 / - | 3 | ✓ Closing fragment |
| 10-17 11:24 | 10m | - / -5 | CR7BUW | -9 / - | 2 | ✓ Closing fragment |
| 10-17 11:18 | 10m | - / -12 | CR7BUJ | -12 / - | 2 | ✓ Closing fragment |
| 10-13 15:06 | 10m | - / -8 | EA5GVJ | -8 / - | 2 | ✓ Closing fragment |
| 08-31 17:11 | 20m | - / +1 | GM0OPS | +5 / - | 2 | ✓ Closing fragment |
| 08-30 21:29 | 20m | - / -10 | AC1KZ | -13 / - | 2 | Partial capture |
| 08-30 21:18 | 20m | - / -14 | KP4AH | -8 / - | 2 | ✓ Closing fragment |
| 08-30 20:49 | 20m | - / -18 | KP4AA | -15 / - | 3 | ✓ Closing fragment |
| 08-30 20:14 | 20m | - / +3 | F4HDR | +10 / - | 2 | ✓ Closing fragment |
| 08-30 20:11 | 20m | - / -13 | RO7F | -1 / - | 2 | ✓ Closing fragment |
| 08-30 20:08 | 20m | - / -2 | M0PBG | +3 / - | 3 | ✓ Closing fragment |
| 08-30 20:04 | 20m | - / -13 | ON5AI | +7 / - | 2 | ✓ Closing fragment |
| 08-30 07:06 | 20m | - / -6 | YT7TZ | +18 / - | 2 | ✓ Closing fragment |
| 08-30 04:46 | 20m | - / -10 | RA9HBQ | -23 / - | 2 | ✓ Closing fragment |
| 08-30 04:43 | 20m | - / +2 | RL4R | +13 / - | 2 | ✓ Closing fragment |
| 08-29 17:11 | 20m | - / -1 | AO5FSB | +5 / - | 2 | ✓ Closing fragment |
| 08-29 16:46 | 20m | - / -13 | AA3B | -3 / - | 2 | ✓ Closing fragment |
| 08-29 15:55 | 20m | - / -7 | MD0CCE | -8 / - | 2 | ✓ Closing fragment |
| 08-29 02:52 | 20m | - / -12 | EA7DAP | +2 / - | 2 | ✓ Closing fragment |
| 08-28 20:56 | 20m | - / -24 | 9A3TGY | -2 / - | 2 | ✓ Closing fragment |
| 08-28 05:19 | 20m | - / -14 | R4HGP | -2 / - | 3 | Partial capture |
| 08-28 05:06 | 20m | - / -17 | UA6AOP | -11 / - | 3 | Partial capture |
| 08-28 05:06 | 20m | - / - | RC1TF | -8 / - | 2 | ✓ Closing fragment |
| 08-28 04:50 | 20m | -6 / - | K5MGY | - / - | 5 | Partial capture |
| 08-27 22:26 | 20m | - / -18 | KB3VNG | -2 / - | 2 | Partial capture |
| 08-27 19:42 | 20m | - / +6 | CT7AGM | 0 / - | 2 | ✓ Closing fragment |
| 08-27 17:30 | 20m | +6 / - | KC3JEQ | - / 0 | 3 | Partial capture |
| 08-27 05:22 | 20m | - / 0 | KJ4IHN | -2 / - | 2 | ✓ Closing fragment |
| 08-27 04:36 | 20m | - / - | SV2AOB | -12 / - | 2 | Partial capture |
| 08-27 03:37 | 20m | - / -22 | RA8AO | -11 / - | 2 | ✓ Closing fragment |
| 08-25 17:07 | 40m | -2 / - | R6SBN | - / - | 2 | Partial capture |
| 08-25 17:03 | 40m | +4 / - | SP9AU | +6 / -3 | 5 | ✓ Full exchange observed |
| 08-25 17:02 | 40m | +1 / -5 | R4LBD | -16 / -4 | 5 | ✓ Full exchange observed |
| 08-25 16:58 | 40m | +3 / - | DL1ARS/P | - / -16 | 5 | ✓ Closing fragment |
| 08-25 16:00 | 20m | - / -11 | M9KJY | +2 / - | 2 | ✓ Closing fragment |
| 08-25 06:43 | 20m | - / - | DL1R | -2 / - | 8 | Partial capture |
| 08-25 06:29 | 20m | - / -21 | OH9JP | -2 / - | 2 | ✓ Closing fragment |
| 08-25 06:26 | 20m | - / -24 | DL1UDO | -9 / - | 3 | Partial capture |
| 08-25 06:11 | 40m | +6 / - | N2QN | - / -16 | 3 | ✓ Closing fragment |
| 08-25 06:09 | 40m | +4 / +8 | IV3FSG | +7 / -1 | 5 | ✓ Full exchange observed |
| 08-25 05:15 | 40m | +2 / - | N0BUZ | - / - | 7 | Partial capture |
| 08-25 05:13 | 40m | -5 / - | 9A0HRS | - / +6 | 3 | ✓ Closing fragment |
| 08-24 19:37 | 20m | - / -8 | 7K1CPT | -6 / - | 2 | ✓ Closing fragment |
| 08-24 04:21 | 20m | - / -14 | R9FGF | -20 / - | 2 | ✓ Closing fragment |
| 08-24 03:52 | 20m | - / -13 | K7QA | +1 / - | 3 | Partial capture |
| 08-23 19:42 | 20m | - / -3 | ON5GQ | +1 / - | 2 | ✓ Closing fragment |
| 08-23 19:33 | 20m | -11 / - | BG2GWN | - / - | 2 | Partial capture |
| 08-22 04:50 | 20m | - / -3 | V31DL | -8 / - | 2 | ✓ Closing fragment |
| 08-22 04:19 | 20m | - / +2 | AA4SS | -13 / - | 2 | ✓ Closing fragment |
| 08-21 20:23 | 20m | - / -6 | W8VS | -14 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 170345 +6 2646 SP9AU SP4TKA -03 170400 +2 640 SP4TKA SP9AU R+12 170415 +1 2646 SP9AU SP4TKA RR73 170430 +8 640 SP4TKA SP9AU 73 170515 -1 2646 PE8HB SP4TKA KO14 170700 -3 239 R6SBN SP4TKA KO14 (x2) 185815 +2 525 ON8BZ SP4TKA KO14 185845 +2 534 CQ SP4TKA KO14 190045 +6 2728 EI9KF SP4TKA KO14 050945 -17 929 SP4TKA ON2VHF/P -08 191215 -15 1180 SP4TKA TA2VUZ -12 191545 -4 2781 SP4TKA M1DBW -13 (x3)
UTC dB Audio Message 150615 -9 1529 SP4TKA EA5GVJ -08 (x2) 111845 -14 1167 SP4TKA CR7BUJ -12 (x2) 112200 -12 2495 SP4TKA CR7BUW IM58 (x3) 114130 -19 2000 SP4TKA UB3ADO/P -06 114500 -17 1999 SP4TKA RR73; UT4VL <...> -06
UTC dB Audio Message 201130 -8 1873 SP4TKA RO7F -13 (x2) 201415 +10 2272 SP4TKA F4HDR +03 (x2) 204930 -13 1845 SP4TKA KP4AA -18 (x3) 211815 -8 1561 SP4TKA KP4AH -14 (x2) 212945 -13 1215 SP4TKA AC1KZ -10 (x2) 171130 +2 3004 SP4TKA GM0OPS +01 (x2) 175630 -9 393 SP4TKA VE1WT RR73 175800 -12 2175 SP4TKA DL3EBJ +10
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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