F4LSL — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving F4LSL, decoded by SO8OO in southeastern Poland. 299 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 7 UTC dates in the available aggregate history. Observed between 2026-08-24 and 2026-09-13.
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 299 FT8 messages attributed to F4LSL as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (82%), followed by 10 m (13%) and 40 m (5%). Most decodes (71%) fell within the six-hour window 05:00-11:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (77%); the estimated median was +2 dB.
Overview
Bands
Last attributed message: 2026-09-13 17:45 UTC
Observed FT8 message patterns
- Attributed sample
- 299 messages
- Active dates
- 7 UTC dates
- Estimated median S/N
- +2 dB
- Estimated 10th-90th percentile
- -15 to +14 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 29, moderate (-15 to -9 dB) 41, strong (≥ -8 dB) 229.
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 F4LSL 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 F4LSL
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
- JN36 · 232 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,158 km (approx.)
- Last such locator decoded
- 2026-09-13 17:45 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 | F4LSL S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-04 16:33 | 40m | - / - | PD0IFI | +4 / - | 2 | Partial capture |
| 09-04 16:27 | 40m | - / - | 9A4ZM | -6 / - | 2 | Partial capture |
| 09-04 16:25 | 40m | - / +3 | PD0MNO | -14 / - | 2 | ✓ Closing fragment |
| 08-31 18:02 | 40m | -2 / +4 | HB9CZF | +3 / - | 4 | Partial capture |
| 08-31 18:00 | 40m | 0 / - | OM1JM | - / - | 3 | Partial capture |
| 08-28 17:18 | 20m | +16 / - | LZ1ZF | - / 0 | 4 | ✓ Closing fragment |
| 08-28 17:16 | 20m | +18 / - | UD7G | - / - | 3 | Partial capture |
| 08-28 17:10 | 20m | +11 / - | 7Z1AV | - / +4 | 4 | ✓ Closing fragment |
| 08-28 16:59 | 20m | +8 / - | RN4AZ | - / - | 19 | Partial capture |
| 08-28 16:55 | 20m | +11 / - | 7Q5A | - / - | 7 | Partial capture |
| 08-28 09:06 | 20m | +2 / - | Z33B | - / - | 5 | Partial capture |
| 08-28 08:58 | 20m | +6 / -12 | JY5IB | -18 / -17 | 17 | ✓ Full exchange observed |
| 08-28 08:56 | 20m | +10 / - | Z33B | - / - | 2 | Partial capture |
| 08-28 08:55 | 20m | +11 / - | JY5IB | - / - | 2 | Partial capture |
| 08-28 08:53 | 20m | +10 / - | ON1JP | -9 / +2 | 4 | ✓ Full exchange observed |
| 08-28 08:53 | 20m | - / - | UA6AOP | -3 / - | 2 | Partial capture |
| 08-28 08:51 | 20m | +13 / - | OH/SM5MRW | - / - | 3 | Partial capture |
| 08-28 08:47 | 20m | +10 / - | DL1PR | - / - | 4 | Partial capture |
| 08-28 08:44 | 20m | -6 / +2 | ON8MA | +3 / -1 | 5 | ✓ Full exchange observed |
| 08-27 15:34 | 20m | - / -12 | OH3OJ | -12 / - | 2 | Partial capture |
| 08-27 10:47 | 10m | -5 / - | SP7EXY | - / - | 2 | Partial capture |
| 08-27 10:45 | 10m | -8 / - | E73KM | - / - | 4 | Partial capture |
| 08-27 10:41 | 10m | -20 / - | SM3LIV | - / - | 2 | ✓ Closing fragment |
| 08-27 10:37 | 10m | -9 / - | G0WRS | - / - | 3 | Partial capture |
| 08-27 10:35 | 10m | -14 / - | OK2CLW | - / - | 4 | ✓ Closing fragment |
| 08-27 10:29 | 10m | -17 / +9 | CU2AP | -17 / - | 11 | ✓ Full exchange observed |
| 08-27 10:27 | 10m | -14 / - | JH8NTR | - / -5 | 2 | ✓ Closing fragment |
| 08-27 10:26 | 10m | - / -11 | F4FSY | -11 / - | 2 | Partial capture |
| 08-27 10:19 | 10m | -18 / - | YO8SDM | - / - | 3 | Partial capture |
| 08-27 09:01 | 20m | +5 / - | XE1YD | - / - | 38 | Partial capture |
| 08-27 08:58 | 20m | - / - | EA1IOK | -5 / - | 4 | Partial capture |
| 08-27 07:26 | 20m | +10 / - | AH6WP | - / - | 21 | Partial capture |
| 08-27 07:24 | 20m | +10 / - | EA1IOK | - / +7 | 3 | Partial capture |
| 08-27 07:23 | 20m | +4 / - | R2EA/P | - / -5 | 2 | ✓ Closing fragment |
| 08-27 07:20 | 20m | +14 / - | W6ALF | - / -4 | 6 | ✓ Closing fragment |
| 08-26 05:56 | 20m | +1 / - | V31DL | - / - | 7 | Partial capture |
| 08-26 05:54 | 20m | -3 / - | ZL3DMH | - / -1 | 3 | Partial capture |
| 08-26 05:53 | 20m | +1 / - | SV9MBH | - / - | 2 | Partial capture |
| 08-25 20:45 | 20m | +9 / - | 9K2MP | - / - | 11 | Partial capture |
| 08-25 20:40 | 20m | +14 / - | TF1SH | - / -16 | 3 | Partial capture |
| 08-25 20:31 | 20m | +16 / -5 | UN0GY | -1 / - | 7 | Partial capture |
| 08-25 20:21 | 20m | +18 / - | BU2FW | - / -11 | 3 | ✓ Closing fragment |
| 08-25 20:17 | 20m | +14 / - | EX7DY | - / -6 | 2 | ✓ Closing fragment |
| 08-25 20:15 | 20m | +13 / - | 9K2MP | - / - | 2 | Partial capture |
| 08-25 20:11 | 20m | +6 / - | OE1AES | - / -13 | 2 | ✓ Closing fragment |
| 08-25 19:51 | 20m | -2 / - | EX7DY | - / - | 2 | Partial capture |
| 08-25 19:47 | 20m | 0 / -6 | CN8NS | -6 / - | 6 | ✓ Closing observed |
| 08-25 19:42 | 20m | +2 / - | OM8YZ | - / -5 | 3 | ✓ Closing fragment |
| 08-25 09:16 | 20m | -5 / - | R2EA/P | - / - | 6 | Partial capture |
| 08-25 07:46 | 20m | -8 / - | YU4NMT | - / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 170800 +4 2179 RN4AZ F4LSL JN36 (x3) 171030 +11 2178 7Z1AV F4LSL JN36 (x4) 171600 +18 2178 UD7G F4LSL JN36 (x3) 171800 +19 2178 LZ1ZF F4LSL JN36 (x4) 174545 -20 2042 <...> F4LSL JN36
UTC dB Audio Message 062600 -6 2352 F4LSL SP6AXW JO80 180030 -3 2139 OM1JM F4LSL JN36 (x2) 180200 -1 2139 HB9CZF F4LSL JN36 (x2) 180245 +3 1409 F4LSL HB9CZF +04 180300 -2 2139 OM1JM F4LSL JN36 180315 +3 1409 F4LSL HB9CZF +04 180530 -5 1859 F4HIK F4LSL R+04 162530 -14 1682 F4LSL PD0MNO +03 (x2) 162730 -7 1855 F4LSL 9A4ZM JN86 (x2) 163300 +4 637 F4LSL PD0IFI JO32 (x2)
UTC dB Audio Message 103500 -14 2194 OK2CLW F4LSL JN36 (x4) 103700 -12 2195 G0WRS F4LSL JN36 (x3) 104115 -18 2195 SM3LIV F4LSL JN36 (x2) 104515 -16 2195 E73KM F4LSL JN36 (x4) 104730 -5 2195 SP7EXY F4LSL JN36 (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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