SP1ZMO — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving SP1ZMO, decoded by SO8OO in southeastern Poland. 8,966 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, across 56 UTC dates in the available aggregate history. Observed between 2026-07-10 and 2026-09-21.
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 8,966 FT8 messages attributed to SP1ZMO as the transmitting token by decoded message structure across 56 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (42%), followed by 40 m (33%) and 20 m (17%). The busiest six-hour window was 01:00-07:00 UTC, containing 47% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (66%); the estimated median was -4 dB.
Overview
Bands
Last attributed message: 2026-09-21 07:07 UTC
Observed FT8 message patterns
- Attributed sample
- 8,966 messages
- Active dates
- 56 UTC dates
- Estimated median S/N
- -4 dB
- Estimated 10th-90th percentile
- -17 to +7.5 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1,243, moderate (-15 to -9 dB) 1,787, strong (≥ -8 dB) 5,936.
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 SP1ZMO 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 SP1ZMO
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
- JO73 · 7,007 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 613 km (approx.)
- Last such locator decoded
- 2026-09-21 07:07 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 | SP1ZMO S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-21 06:55 | 80m | -2 / - | DF9HT/P | - / -13 | 2 | Partial capture |
| 09-21 06:54 | 80m | +4 / -4 | DG3YEV | +11 / -11 | 4 | ✓ Full exchange observed |
| 09-21 06:50 | 80m | +2 / -9 | DO2KTE | -7 / -13 | 11 | ✓ Full exchange observed |
| 09-21 06:46 | 80m | +6 / - | DO8JB | - / - | 5 | Partial capture |
| 09-21 06:40 | 80m | -6 / -19 | DK4RH | -20 / -16 | 15 | ✓ Full exchange observed |
| 09-21 06:36 | 80m | +1 / - | G6PWS | - / - | 3 | Partial capture |
| 09-21 06:25 | 80m | -6 / -16 | ON1AJ | -18 / - | 8 | Partial capture |
| 09-21 06:22 | 80m | +1 / - | ON8DM | - / - | 5 | Partial capture |
| 09-21 06:18 | 80m | -2 / -15 | DH9DR | +2 / -10 | 8 | ✓ Full exchange observed |
| 09-21 06:18 | 80m | +5 / +2 | DK2MAX | -16 / -14 | 5 | ✓ Full exchange observed |
| 09-21 06:16 | 80m | +5 / - | DO5HCS | - / - | 4 | Partial capture |
| 09-21 06:13 | 80m | +8 / -11 | DL2PK | -7 / -14 | 9 | ✓ Full exchange observed |
| 09-21 06:11 | 80m | +6 / - | EI4KX | - / - | 5 | Partial capture |
| 09-21 06:07 | 80m | +5 / - | DO2KTE | - / - | 4 | Partial capture |
| 09-21 06:04 | 80m | +8 / - | DO8JB | - / - | 5 | Partial capture |
| 09-21 06:00 | 80m | - / - | SQ3KO | -8 / - | 4 | Partial capture |
| 09-21 06:00 | 80m | +2 / - | G6PWS | - / - | 5 | Partial capture |
| 09-21 05:57 | 80m | -3 / - | SP8JRG | - / - | 5 | Partial capture |
| 09-21 05:53 | 80m | +3 / - | DG0OBU | - / - | 5 | Partial capture |
| 09-21 05:50 | 80m | +2 / - | DB3OI | - / - | 5 | Partial capture |
| 09-21 05:47 | 80m | +5 / - | DK2MAX | - / - | 5 | Partial capture |
| 09-21 05:43 | 80m | -4 / +7 | DG1YHP | -10 / -11 | 12 | ✓ Full exchange observed |
| 09-21 05:41 | 80m | +4 / +6 | OZ1BLP | -12 / -5 | 5 | ✓ Full exchange observed |
| 09-21 05:39 | 80m | +6 / +8 | DK3WL | +6 / -8 | 7 | ✓ Full exchange observed |
| 09-21 05:36 | 80m | +2 / - | G6PWS | - / - | 4 | Partial capture |
| 09-21 05:35 | 80m | +7 / -13 | S57TW | +9 / -6 | 3 | ✓ Full exchange observed |
| 09-21 05:33 | 80m | +10 / - | DO8JB | - / - | 3 | Partial capture |
| 09-21 05:30 | 80m | +1 / -5 | DF0PDF | +19 / -5 | 3 | ✓ Full exchange observed |
| 09-21 05:30 | 80m | +9 / - | S57TW | - / - | 4 | Partial capture |
| 09-21 05:26 | 80m | -1 / -2 | SP3WVL | -16 / -13 | 8 | ✓ Full exchange observed |
| 09-21 05:23 | 80m | - / -6 | SQ7OBB | -5 / - | 3 | Partial capture |
| 09-21 05:16 | 80m | +4 / -5 | YO2CK | +14 / -13 | 15 | ✓ Full exchange observed |
| 09-21 05:15 | 80m | +9 / -18 | PA1AW | -18 / -9 | 4 | ✓ Full exchange observed |
| 09-21 05:13 | 80m | +17 / -1 | G0BLB | -5 / -6 | 5 | ✓ Full exchange observed |
| 09-21 05:03 | 80m | +14 / -1 | 9A2AJ | +7 / - | 5 | Partial capture |
| 09-21 04:59 | 80m | +6 / +6 | LY1G | +13 / -4 | 9 | ✓ Full exchange observed |
| 09-21 04:57 | 80m | +10 / - | IN3OWY | - / -14 | 4 | ✓ Closing fragment |
| 09-21 04:51 | 80m | +13 / - | MW7TTA | -14 / -2 | 9 | ✓ Closing observed |
| 09-21 04:50 | 80m | +14 / - | PC2J | - / -16 | 2 | ✓ Closing fragment |
| 09-21 04:49 | 80m | +16 / - | F4FSY | -10 / -14 | 2 | ✓ Closing observed |
| 09-20 16:02 | 60m | - / - | DL3FBI | -19 / - | 3 | Partial capture |
| 09-20 16:01 | 60m | - / - | DL4YDR | -15 / - | 2 | Partial capture |
| 09-20 04:08 | 60m | -20 / -2 | F5MYK | -5 / -14 | 4 | ✓ Full exchange observed |
| 09-20 04:06 | 60m | -24 / -15 | HB9CXZ | -3 / -8 | 3 | ✓ Full exchange observed |
| 09-20 04:01 | 60m | - / -16 | IU5SCG | +7 / - | 3 | ✓ Closing fragment |
| 09-20 03:25 | 60m | -12 / - | VE2CKW | - / - | 2 | Partial capture |
| 09-20 03:11 | 60m | - / - | US2YW | -18 / - | 2 | Partial capture |
| 09-20 02:49 | 60m | - / - | US2YW | -16 / - | 3 | Partial capture |
| 09-20 02:21 | 60m | -8 / - | VE2CKW | - / - | 4 | Partial capture |
| 09-20 02:19 | 60m | -2 / - | J48S | - / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 065445 +2 697 DG3YEV SP1ZMO R-11 065500 +13 697 SP1ZMO DG3YEV RR73 065515 -3 1503 CQ SP1ZMO JO73 065545 -1 2134 DF9HT/P SP1ZMO JO73 (x2) 065645 -7 1503 CQ SP1ZMO JO73 (x10)
UTC dB Audio Message 040245 +9 432 SP1ZMO IU5SCG RR73 (x2) 040645 -4 2001 SP1ZMO HB9CXZ -15 040700 -24 2001 HB9CXZ SP1ZMO R-08 040715 -2 2001 SP1ZMO HB9CXZ RR73 040730 -23 1535 CQ SP1ZMO JO73 040800 -21 2237 F5MYK SP1ZMO JO73 040945 -7 2236 SP1ZMO F5MYK -02 041000 -18 2237 F5MYK SP1ZMO R-14 041015 -3 2236 SP1ZMO F5MYK RR73 160100 -17 1262 SP1ZMO DL4YDR JO32 (x2) 160200 -18 1209 SP1ZMO DL3FBI JO40 (x3)
UTC dB Audio Message 034745 +12 1822 SP1ZMO OK1TP RR73 042315 -16 1496 CQ SP1ZMO JO73 042345 -17 1174 OK1AY SP1ZMO JO73 042400 -13 1172 SP1ZMO OK1AY +03 (x2) 042445 -18 1173 OK1AY SP1ZMO R-09 042500 -12 1172 SP1ZMO OK1AY RR73 (x2) 232600 -1 2754 SP1ZMO LX1JX -14 (x2) 232645 -14 2754 LX1JX SP1ZMO R-16 232700 +4 2754 SP1ZMO LX1JX RR73 (x4)
UTC dB Audio Message 070630 -12 1403 CQ SP1ZMO JO73 070645 -10 1403 SP1ZMO DL6REX JO40 070645 -1 611 SP1ZMO DL6EL JN57 070700 -11 1403 DL6EL SP1ZMO -20 070715 +3 611 SP1ZMO DL6EL R-06 070730 -9 1403 DL6EL SP1ZMO R-16 070745 +2 611 SP1ZMO DL6EL RR73 070800 -11 1403 DL6EL SP1ZMO R-16 070815 +4 611 SP1ZMO DL6EL RR73 070830 -13 1403 DL6EL SP1ZMO 73 070915 -10 1184 SN40KZE SP1ZMO JO73 070930 +5 1184 SP1ZMO SN40KZE +09 070945 -11 1184 SN40KZE SP1ZMO R-05 (x3)
UTC dB Audio Message 064145 -3 2066 SP1ZMO RZ4FWA LO23 064215 -3 668 SP1ZMO YO9FKI KN25 (x3) 064915 -7 1606 SP1ZMO R2AZQ -24 065615 +8 1579 SP1ZMO F4PCM JN23 (x2) 070315 +1 1289 SP1ZMO R2AL KO85 (x2) 070545 -5 2232 SP1ZMO IK4JPP 73 072315 +4 1783 SP1ZMO R2AL KO85 (x3) 072945 +5 1908 SP1ZMO IZ0RDM +13 (x2)
UTC dB Audio Message 120830 -13 1440 SP1ZMO F5ADE JN07 (x11) 122630 -6 2710 SP1ZMO LZ2FH KN23 124400 -20 1595 SP1ZMO F5SJC 73 125445 +4 664 SP1ZMO SV1CQN +04 152830 -18 1292 SP1ZMO IU6SPQ -15
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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