YE4FNN — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving YE4FNN, decoded by SO8OO in southeastern Poland. 1,180 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 65 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-19.
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 1,180 FT8 messages attributed to YE4FNN as the transmitting token by decoded message structure across 65 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (44%), followed by 20 m (31%) and 80 m (21%). Most decodes (55%) fell within the six-hour window 13:00-19:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12.1 dB.
Overview
Bands
Last attributed message: 2026-09-19 23:27 UTC
Observed FT8 message patterns
- Attributed sample
- 1,180 messages
- Active dates
- 65 UTC dates
- Estimated median S/N
- -12.1 dB
- Estimated 10th-90th percentile
- -19.2 to -5 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 326, moderate (-15 to -9 dB) 596, strong (≥ -8 dB) 258.
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 YE4FNN 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 YE4FNN
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
- OI37 · 660 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 9,878 km (approx.)
- Last such locator decoded
- 2026-09-19 23:27 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 | YE4FNN S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-19 23:31 | 40m | - / -10 | IK0CHU | +4 / - | 3 | ✓ Closing fragment |
| 09-19 23:31 | 40m | - / - | M0IIO | -8 / - | 3 | Partial capture |
| 09-19 23:26 | 40m | -14 / - | FS4WBS | - / - | 2 | Partial capture |
| 09-19 16:35 | 80m | - / - | UA3ATQ | -24 / - | 2 | Partial capture |
| 09-19 16:34 | 80m | - / - | DL6ZXG | -12 / - | 2 | Partial capture |
| 09-19 16:34 | 80m | - / - | SQ9LOJ | +2 / - | 9 | Partial capture |
| 09-19 16:33 | 80m | -10 / - | RA1AOB | - / -9 | 2 | ✓ Closing fragment |
| 09-19 16:33 | 80m | - / -19 | SP3QDM | +17 / - | 7 | Partial capture |
| 09-19 16:32 | 80m | - / - | OM4AB | +4 / - | 7 | Partial capture |
| 09-19 16:31 | 80m | - / -16 | RD7LC | -6 / - | 7 | Partial capture |
| 09-19 16:31 | 80m | - / - | UR4LBG | -10 / - | 4 | Partial capture |
| 09-19 16:31 | 80m | -6 / - | UB9MEU | - / -16 | 3 | ✓ Closing fragment |
| 09-19 16:31 | 80m | - / - | EU7A | +4 / - | 6 | Partial capture |
| 09-19 16:31 | 80m | -5 / -6 | S54E | +2 / -19 | 5 | ✓ Full exchange observed |
| 09-19 16:30 | 80m | - / - | SP6TRX | +22 / - | 3 | Partial capture |
| 09-19 16:28 | 80m | -7 / -11 | HA3KZ | -1 / - | 4 | ✓ Closing observed |
| 09-19 16:28 | 80m | -6 / -19 | US0SY | +11 / - | 7 | ✓ Closing observed |
| 09-19 16:26 | 80m | - / - | RM5P | -6 / - | 4 | Partial capture |
| 09-19 16:25 | 80m | - / - | UA3IDQ | -9 / - | 14 | Partial capture |
| 09-19 16:25 | 80m | -7 / - | RA1AOB | - / - | 5 | Partial capture |
| 09-19 16:24 | 80m | -6 / - | RA0FF | - / - | 2 | Partial capture |
| 09-19 16:23 | 80m | - / - | EU7A | +1 / - | 5 | Partial capture |
| 09-19 16:23 | 80m | - / - | OH3NXW | +4 / - | 2 | Partial capture |
| 09-19 16:23 | 80m | - / - | R6ZEJ | +6 / - | 2 | Partial capture |
| 09-19 16:23 | 80m | -8 / - | RW9UR | - / -18 | 2 | Partial capture |
| 09-19 16:22 | 80m | - / - | OH4SS | -6 / - | 4 | Partial capture |
| 09-19 16:18 | 80m | - / - | UA3IDQ | -11 / - | 8 | Partial capture |
| 09-19 16:18 | 80m | -9 / -8 | RW3LL | +2 / -11 | 8 | ✓ Full exchange observed |
| 09-19 16:17 | 80m | - / - | OH4SS | -1 / - | 4 | Partial capture |
| 09-19 16:17 | 80m | -11 / - | RA0FF | - / - | 2 | Partial capture |
| 09-19 16:15 | 80m | -13 / - | RA1AOB | - / - | 3 | Partial capture |
| 09-19 15:55 | 80m | - / - | YO9IJP | +8 / - | 4 | Partial capture |
| 09-19 15:54 | 80m | - / -18 | R9WJ | -7 / - | 2 | ✓ Closing fragment |
| 09-19 15:46 | 80m | -14 / - | UB0SMX | - / -23 | 2 | Partial capture |
| 09-19 15:45 | 80m | - / - | OM8FR | +20 / - | 5 | Partial capture |
| 09-19 15:41 | 80m | - / - | OH4SS | +3 / - | 3 | Partial capture |
| 09-19 15:39 | 80m | -22 / -7 | EX7CQ | -22 / - | 5 | Partial capture |
| 09-19 15:37 | 80m | - / - | RA6BL | +4 / - | 2 | Partial capture |
| 09-19 15:36 | 80m | - / -9 | RC1TF | -4 / - | 4 | ✓ Closing fragment |
| 09-19 15:30 | 80m | - / -13 | UA1OIZ | -8 / - | 2 | ✓ Closing fragment |
| 09-19 15:29 | 80m | - / - | EU6MM | +5 / - | 7 | Partial capture |
| 09-19 15:29 | 80m | - / -11 | RD4WM | -19 / - | 6 | Partial capture |
| 09-19 15:27 | 80m | - / - | OH3NXW | +4 / - | 4 | Partial capture |
| 09-19 15:25 | 80m | - / -9 | UA3AKO | -8 / - | 2 | ✓ Closing fragment |
| 09-19 15:25 | 80m | - / - | RA3XEV | -14 / - | 2 | Partial capture |
| 09-19 15:23 | 80m | - / - | OH3NXW | +14 / - | 3 | Partial capture |
| 09-19 14:20 | 80m | - / -9 | RY3D | -6 / - | 5 | Partial capture |
| 09-19 14:13 | 80m | - / -11 | RY3D | -10 / - | 4 | Partial capture |
| 09-18 16:37 | 80m | - / - | SP6JZL | +16 / - | 4 | Partial capture |
| 09-18 16:32 | 80m | - / -13 | SP6JZL | +7 / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 222445 -1 1368 YE4FNN IK3ERN R-19 (x2) 222545 -11 539 YE4FNN R8CW -11 222630 -19 2462 R8CW YE4FNN 73 222730 -19 2462 RX9L YE4FNN OI37 222815 -16 1438 YE4FNN CT7AUT IM67 (x2) 232630 -11 2406 FS4WBS YE4FNN OI37 (x2) 233145 -6 3093 YE4FNN M0IIO IO91 233145 +5 1329 YE4FNN IK0CHU JN62 233215 -6 3093 YE4FNN M0IIO IO91 233215 +4 1329 YE4FNN IK0CHU R-10 233245 -11 3093 YE4FNN M0IIO IO91 233245 +3 1329 YE4FNN IK0CHU 73
UTC dB Audio Message 163545 +7 2292 YE4FNN UA3IDQ KO66 163545 +10 1897 YE4FNN SQ9LOJ JO90 163545 +15 868 YE4FNN SP3QDM -19 163545 +11 897 YE4FNN OM4AB JN98 163615 -5 2292 YE4FNN UA3IDQ KO66 163615 -2 1897 YE4FNN SQ9LOJ JO90 163615 +8 868 YE4FNN SP3QDM -19 163615 -7 2444 YE4FNN RD7LC -18 163645 -1 1897 YE4FNN SQ9LOJ JO90 163715 -24 2030 YE4FNN UA3ATQ KO85 163715 +1 1897 YE4FNN SQ9LOJ JO90 (x4) 164045 -8 719 YE4FNN UA3IDQ KO66
UTC dB Audio Message 173730 -2 1893 YE4FNN YO8AAZ KN36 (x4) 160045 -15 1950 CQ YE4FNN OI37 (x3) 160200 -3 2490 YE4FNN SV1ENM KM18 160215 -14 1950 CQ YE4FNN OI37 (x2) 215545 -16 2236 YE4FNN F5MYK IN97 155000 -14 2313 CQ YE4FNN OI37 (x4)
UTC dB Audio Message 215645 -5 963 YE4FNN LU8VLE -18 (x2) 224830 -15 2393 HI3CH YE4FNN OI37 150315 -21 2387 R6OAD YE4FNN OI37 (x3) 150645 -18 1884 BA4VDC YE4FNN OI37 150815 -16 1884 BH3IJF YE4FNN OI37 150845 -16 1884 WA2TMB YE4FNN -16 150915 -15 1884 RM6OS YE4FNN OI37 (x2) 151045 -13 1885 BH3IJF YE4FNN R-11 151145 -13 1885 UB8AHK YE4FNN OI37 151415 -13 1885 UT7AM YE4FNN -10 151830 -7 1885 R9FFZ YE4FNN OI37
UTC dB Audio Message 152915 -16 2259 RU1AB YE4FNN R-23 150545 -17 2238 <...> YE4FNN R-11 144830 -8 2542 YE4FNN SV4OZF -04 161630 -12 1274 YE4FNN R6DWD -17 (x2) 154730 -24 1767 YE4FNN ON5RZ JO21 110230 -22 1787 YE4FNN F5MXH JN07 (x2) 080545 -19 1940 YE4FNN ON4CET JO21 (x7)
UTC dB Audio Message 204630 +0 2595 YE4FNN PA3DUU JO21 (x12) 222715 -19 1311 YE4FNN YB5QZ -19 (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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