SP4GDW — 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 SP4GDW, decoded by SO8OO in southeastern Poland. 2,051 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 74 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-10-22.
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 2,051 FT8 messages attributed to SP4GDW as the transmitting token by decoded message structure across 74 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (95%), followed by 20 m (5%). Most decodes (79%) fell within the six-hour window 07:00-13:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -15 dB.
Overview
Bands
Last attributed message: 2026-10-22 09:42 UTC
Observed FT8 message patterns
- Attributed sample
- 2,051 messages
- Active dates
- 74 UTC dates
- Estimated median S/N
- -15 dB
- Estimated 10th-90th percentile
- -21 to -7 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 931, moderate (-15 to -9 dB) 801, strong (≥ -8 dB) 319.
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 SP4GDW 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 SP4GDW
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
- JO93 · 973 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 440 km (approx.)
- Last such locator decoded
- 2026-10-22 09:41 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 | SP4GDW S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-22 09:41 | 40m | -21 / - | F1LPT/P | - / - | 2 | Partial capture |
| 10-22 09:39 | 40m | -22 / - | SP9IML | -15 / - | 5 | ✓ Closing observed |
| 10-22 09:38 | 40m | -20 / - | SP2BT | - / -7 | 2 | ✓ Closing fragment |
| 10-20 17:13 | 40m | - / - | SQ5CZJ | -2 / - | 8 | Partial capture |
| 10-20 16:51 | 40m | - / -1 | DD3ZZ | 0 / - | 2 | Partial capture |
| 10-20 10:22 | 40m | -16 / - | G8XDD/P | - / -11 | 2 | ✓ Closing fragment |
| 10-20 10:20 | 40m | -16 / - | SP9CTW | -2 / - | 4 | ✓ Closing observed |
| 10-20 10:17 | 40m | -17 / - | G8XDD/P | - / - | 5 | ✓ Closing fragment |
| 10-20 10:12 | 40m | -20 / - | G8XDD/P | - / -26 | 4 | Partial capture |
| 10-20 10:08 | 40m | -18 / - | G8XDD/P | - / - | 5 | Partial capture |
| 10-20 10:04 | 40m | -14 / - | M9ORB | - / - | 4 | Partial capture |
| 10-20 09:59 | 40m | -20 / +8 | SP9IML | -19 / -9 | 4 | ✓ Full exchange observed |
| 10-20 09:33 | 40m | - / - | SP9IML | -13 / - | 5 | Partial capture |
| 10-20 09:29 | 40m | -20 / - | PA3GHJ | - / - | 3 | Partial capture |
| 10-20 09:24 | 40m | -19 / -14 | SQ2BXJ | -16 / -9 | 11 | ✓ Full exchange observed |
| 10-20 09:21 | 40m | -18 / - | SP1DMP | - / -8 | 3 | ✓ Closing fragment |
| 10-20 09:19 | 40m | -18 / -18 | LZ2INP | -3 / -8 | 5 | ✓ Full exchange observed |
| 10-20 09:15 | 40m | -17 / - | SQ2BXJ | - / - | 4 | Partial capture |
| 10-20 09:08 | 40m | -18 / - | F5JVT | -24 / - | 2 | ✓ Closing observed |
| 10-20 09:06 | 40m | -16 / - | SM5MEK | - / -9 | 2 | ✓ Closing fragment |
| 10-20 09:00 | 40m | -18 / -1 | SP5EAF | -7 / - | 6 | ✓ Closing observed |
| 10-20 08:57 | 40m | -18 / +10 | SP4VIT | -14 / -8 | 6 | ✓ Full exchange observed |
| 10-19 08:31 | 40m | -11 / -5 | EU1EU | -7 / -13 | 5 | ✓ Full exchange observed |
| 10-19 08:28 | 40m | -14 / - | SP1ZMO | - / - | 3 | Partial capture |
| 10-19 08:27 | 40m | -13 / - | SP1JW | - / - | 2 | Partial capture |
| 10-19 08:24 | 40m | -17 / - | SP6TSE | - / - | 3 | Partial capture |
| 10-19 08:17 | 40m | -17 / - | DM7XK | - / -15 | 8 | Partial capture |
| 10-19 08:16 | 40m | -15 / - | F5JVT | -20 / -13 | 4 | ✓ Closing observed |
| 10-19 08:15 | 40m | -15 / +1 | SQ9SZ | -4 / -8 | 4 | ✓ Full exchange observed |
| 10-19 08:11 | 40m | - / - | F5JVT | -22 / - | 2 | Partial capture |
| 10-19 08:09 | 40m | -20 / 0 | SP9IML | -15 / - | 7 | ✓ Closing observed |
| 10-19 08:09 | 40m | -20 / +5 | SP9XG | -6 / - | 4 | ✓ Closing observed |
| 10-19 08:07 | 40m | - / - | F5JVT | -24 / - | 2 | Partial capture |
| 10-19 08:07 | 40m | -20 / +8 | SP5MXZ | +8 / -1 | 4 | ✓ Full exchange observed |
| 10-19 08:04 | 40m | -18 / - | SP1ZMO | - / - | 4 | Partial capture |
| 10-19 08:02 | 40m | -17 / - | SP7OK | - / - | 3 | Partial capture |
| 10-19 08:00 | 40m | - / - | F5JVT | -18 / - | 4 | Partial capture |
| 10-19 08:00 | 40m | -12 / -21 | SP9AUV | -6 / -11 | 6 | ✓ Full exchange observed |
| 10-19 07:58 | 40m | -18 / +2 | SQ9GAI | 0 / - | 3 | ✓ Closing observed |
| 10-19 07:56 | 40m | -17 / - | SP4BP | -17 / -8 | 6 | ✓ Full exchange observed |
| 10-19 07:53 | 40m | -18 / - | SP2BT | - / -11 | 2 | ✓ Closing fragment |
| 10-19 07:52 | 40m | - / - | F5JVT | -16 / - | 10 | Partial capture |
| 10-19 07:52 | 40m | -14 / -24 | F1PBZ | -9 / -15 | 7 | ✓ Full exchange observed |
| 10-19 07:51 | 40m | -20 / -20 | YO8RCA | -16 / -13 | 4 | ✓ Full exchange observed |
| 10-19 07:47 | 40m | -20 / +7 | SP4VIT | -12 / - | 4 | ✓ Closing observed |
| 10-18 10:15 | 40m | -14 / - | DK1TBL | - / -15 | 6 | ✓ Closing fragment |
| 10-18 10:07 | 40m | -16 / -5 | SQ9MEZ | +4 / -5 | 19 | ✓ Full exchange observed |
| 10-18 10:03 | 40m | - / -6 | SP5SJL | -12 / - | 3 | ✓ Closing fragment |
| 10-18 09:58 | 40m | -16 / - | SP4CIW | - / - | 3 | Partial capture |
| 10-18 09:56 | 40m | -18 / - | SQ9MEZ | - / - | 11 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 093730 -18 1730 CQ SP4GDW JO93 093800 -20 1730 SP2BT SP4GDW -07 (x2) 093900 -22 1730 CQ SP4GDW JO93 (x2) 093945 -13 2143 SP4GDW SP9IML JN99 094000 -22 1730 CQ SP4GDW JO93 (x2) 094100 -23 1730 F1LPT/P SP4GDW JO93 094115 -16 2144 SP4GDW SP9IML JN99 094130 -19 1729 F1LPT/P SP4GDW JO93 094145 -14 2144 SP4GDW SP9IML JN99 094230 -22 1730 SP9IML SP4GDW RR73 094245 -18 2144 SP4GDW SP9IML 73 132515 -7 989 SP4GDW SP3VST JO82
UTC dB Audio Message 212515 -2 2668 SP4GDW OM1AGE JN88 (x5)
UTC dB Audio Message 155245 -11 1564 SP4GDW EA3CY 73 103545 +8 387 SP4GDW F4MRJ/P +00 (x2) 103815 +8 1198 SP4GDW R2BDR -08 (x2) 115615 -10 1366 SP4GDW DK1TBL R-16 (x5) 063745 +9 1216 SP4GDW R3PJ KO84 (x3) 131615 -7 1213 SP4GDW RA9CUU -11 (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.
CW
No CW receptions recorded for this callsign in the last 30 days.
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