EI4JFB — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving EI4JFB, decoded by SO8OO in southeastern Poland. 2,137 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 23 UTC dates in the available aggregate history. Observed between 2026-06-27 and 2026-09-11.
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 2,137 FT8 messages attributed to EI4JFB as the transmitting token by decoded message structure across 23 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (44%), followed by 80 m (38%) and 20 m (18%). Most decodes (73%) fell within the six-hour window 19:00-01:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7 dB.
Overview
Bands
Last attributed message: 2026-09-11 22:29 UTC
Observed FT8 message patterns
- Attributed sample
- 2,137 messages
- Active dates
- 23 UTC dates
- Estimated median S/N
- -7 dB
- Estimated 10th-90th percentile
- -16 to 0 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 222, moderate (-15 to -9 dB) 697, strong (≥ -8 dB) 1,218.
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 EI4JFB 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 EI4JFB
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
- IO63 · 1,301 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 2,008 km (approx.)
- Last such locator decoded
- 2026-09-11 22:29 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 | EI4JFB S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-11 22:28 | 40m | -6 / - | N1EDF | - / - | 2 | Partial capture |
| 09-11 22:26 | 40m | -4 / - | EH3PDA | -10 / - | 3 | ✓ Closing observed |
| 09-11 22:25 | 40m | -5 / - | CT2HEX | - / -8 | 2 | ✓ Closing fragment |
| 09-11 22:24 | 40m | -4 / +4 | ON6DL | +14 / -3 | 5 | ✓ Full exchange observed |
| 09-11 22:22 | 40m | -7 / - | UB0SMX/P | - / -9 | 2 | Partial capture |
| 09-11 22:19 | 80m | - / - | DO1IJB | -9 / - | 8 | Partial capture |
| 09-11 22:15 | 80m | - / - | DL6UXL | -9 / - | 2 | Partial capture |
| 09-11 22:03 | 80m | -8 / -18 | RA3ZH | -8 / -13 | 5 | ✓ Full exchange observed |
| 09-11 21:59 | 80m | -12 / -15 | DG2EBG | -12 / -9 | 9 | ✓ Full exchange observed |
| 09-11 21:50 | 80m | -6 / - | EI5IMB | - / -16 | 3 | Partial capture |
| 09-11 21:45 | 80m | -18 / - | G0KAD | -23 / -16 | 5 | ✓ Closing observed |
| 09-11 21:44 | 80m | -12 / -8 | IV3JRY | +11 / -15 | 8 | ✓ Full exchange observed |
| 09-11 21:43 | 80m | -5 / - | DL4HTK | -3 / -11 | 2 | Partial capture |
| 09-11 21:43 | 80m | - / - | EA5OM | -18 / - | 2 | Partial capture |
| 09-11 21:35 | 80m | - / +1 | OH3GBW | +1 / - | 4 | ✓ Closing fragment |
| 09-11 21:35 | 80m | - / -16 | DO3LZ | -11 / - | 3 | ✓ Closing fragment |
| 09-11 21:28 | 80m | -2 / -6 | SP8DK | +23 / -10 | 4 | ✓ Full exchange observed |
| 09-11 21:26 | 80m | -7 / -12 | DG2EBG | -10 / -11 | 7 | ✓ Full exchange observed |
| 09-11 21:24 | 80m | -10 / - | GM5TGA | - / -14 | 2 | ✓ Closing fragment |
| 09-11 21:22 | 80m | - / - | RW1CW | 0 / - | 11 | Partial capture |
| 09-11 21:22 | 80m | -16 / - | GM4AUP | - / -8 | 2 | ✓ Closing fragment |
| 09-11 21:22 | 80m | - / -8 | DA6HF | -2 / - | 4 | Partial capture |
| 09-11 21:21 | 80m | - / - | SP3TD | -8 / - | 2 | Partial capture |
| 09-11 21:19 | 80m | - / - | IK6GTF | -5 / - | 3 | Partial capture |
| 09-11 21:19 | 80m | - / - | ON4MAP | -15 / - | 5 | Partial capture |
| 09-11 21:18 | 80m | - / - | IZ6BZQ | -3 / - | 3 | Partial capture |
| 09-11 21:16 | 80m | -13 / -10 | OK3FP | +8 / - | 4 | ✓ Closing observed |
| 09-11 21:14 | 80m | - / - | IK6GTF | -8 / - | 2 | Partial capture |
| 09-11 21:10 | 80m | - / - | IK6GTF | -7 / - | 2 | Partial capture |
| 09-11 21:07 | 80m | -11 / -6 | OE6HLF | -12 / +6 | 7 | ✓ Full exchange observed |
| 09-11 20:53 | 80m | -20 / 0 | DL2FM | -12 / -9 | 5 | ✓ Full exchange observed |
| 09-11 20:51 | 80m | -11 / -4 | OH2BVT | -5 / - | 3 | ✓ Closing observed |
| 09-11 20:48 | 80m | - / +3 | G3SZG | -17 / - | 8 | Partial capture |
| 09-11 20:47 | 80m | - / -13 | UT7IA | -2 / - | 2 | ✓ Closing fragment |
| 09-11 20:44 | 80m | -20 / - | G0WTZ | - / - | 2 | Partial capture |
| 09-11 20:42 | 80m | -19 / -24 | IQ0PG | -7 / -15 | 5 | Partial capture |
| 09-11 20:40 | 80m | -19 / - | EH4PDA | - / -14 | 3 | ✓ Closing fragment |
| 09-11 20:34 | 80m | -15 / -7 | SP9SIL | +7 / - | 5 | ✓ Closing observed |
| 09-11 20:26 | 80m | - / -15 | RA2FU | +1 / - | 4 | ✓ Closing fragment |
| 09-11 20:18 | 80m | -17 / -20 | RA1OD | -14 / - | 3 | ✓ Closing observed |
| 09-11 20:13 | 80m | - / -5 | RU4SO | -8 / - | 2 | Partial capture |
| 09-11 20:12 | 80m | -15 / - | M7WVX | - / -10 | 3 | ✓ Closing fragment |
| 09-11 20:06 | 80m | -20 / -14 | R3KLE | -2 / +2 | 4 | ✓ Full exchange observed |
| 09-11 20:00 | 80m | -14 / +1 | ON5MX | -7 / -12 | 3 | Partial capture |
| 09-11 19:58 | 80m | -14 / -2 | DM8BJF | +12 / -6 | 4 | ✓ Full exchange observed |
| 09-11 19:53 | 80m | -17 / - | SP7VCL | - / - | 3 | Partial capture |
| 09-11 19:52 | 80m | -17 / - | EA5KT | - / -14 | 2 | ✓ Closing fragment |
| 09-11 19:47 | 80m | -21 / -10 | SQ2JDM | +10 / - | 3 | ✓ Closing observed |
| 09-09 22:12 | 40m | -14 / - | WA2HMM | - / -18 | 3 | Partial capture |
| 09-09 22:07 | 40m | - / -20 | RC9WC | 0 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 222245 -8 294 UB0SMX/P EI4JFB IO63 (x2) 222400 +11 294 EI4JFB ON6DL JO11 222415 -4 294 ON6DL EI4JFB -03 222430 +12 294 EI4JFB ON6DL R+04 222445 -4 294 ON6DL EI4JFB RR73 222500 +18 294 EI4JFB ON6DL 73 222515 -3 294 CT2HEX EI4JFB -08 (x2) 222645 -6 436 EH3PDA EI4JFB IO63 222730 -10 1455 EI4JFB EH3PDA RR73 222745 -1 436 EH3PDA EI4JFB 73 222815 -5 436 N1EDF EI4JFB IO63 (x2) 222915 -11 437 YC2UKL EI4JFB IO63
UTC dB Audio Message 221815 -15 257 CQ EI4JFB IO63 (x3) 221930 -6 1920 EI4JFB DO1IJB JN48 221945 -18 258 CQ EI4JFB IO63 222000 -10 1920 EI4JFB DO1IJB JN48 222015 -17 258 CQ EI4JFB IO63 222030 +0 1920 EI4JFB DO1IJB JN48 222045 -24 258 CQ EI4JFB IO63 222100 -1 1920 EI4JFB DO1IJB JN48 222115 -14 258 CQ EI4JFB IO63 222130 -2 1920 EI4JFB DO1IJB JN48 (x4)
UTC dB Audio Message 150715 -7 1001 M7TUC EI4JFB R-20 150915 -6 1001 OK2MKJ EI4JFB 73 151045 -8 1001 YB0KEM EI4JFB IO63 (x2) 151245 -1 1001 UA4CKN EI4JFB IO63 151330 -6 656 EI4JFB UA4CKN RR73 151445 -3 1001 UA3ZMQ EI4JFB IO63 151645 -7 1001 LA5TTA EI4JFB R-13 151830 +3 610 EI4JFB F4NKF 73 152045 +3 1001 IK2VFR/P EI4JFB IO63 (x3) 152300 +0 1001 UX7QV EI4JFB IO63 (x3)
UTC dB Audio Message 150445 -11 782 EI4JFB IK2EBP JN45 112315 -1 1005 EI4JFB DN9SHA RR73 112415 -10 1060 EI4JFB M0BEW -19 (x2) 120415 -16 1283 EI4JFB DL2UR +01 (x2) 123245 -11 1187 EI4JFB DO5WG +00 (x2) 125915 -15 1053 EI4JFB PD1HTW +10 131315 -4 1235 EI4JFB PC9F -07 (x2) 125800 -17 859 EI4JFB DN9TL -14 (x2) 141645 -10 2101 EI4JFB F5ADE +00 (x2)
UTC dB Audio Message 235945 -5 1808 EI4JFB DK5WL JN39 (x3)
UTC dB Audio Message 214115 -22 1755 LA3VEA EI4JFB IO63 214130 -8 1754 EI4JFB LA3VEA +12 214145 -21 1754 LA3VEA EI4JFB R-02 214245 -8 527 OO0O EI4JFB IO63 214300 -3 527 EI4JFB OO0O -03 (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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