JA3FYC — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving JA3FYC, decoded by SO8OO in southeastern Poland. 460 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 46 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-02.
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 460 FT8 messages attributed to JA3FYC as the transmitting token by decoded message structure across 46 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (66%), followed by 80 m (14%) and 40 m (12%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.
Overview
Bands
Last attributed message: 2026-10-02 20:36 UTC
Observed FT8 message patterns
- Attributed sample
- 460 messages
- Active dates
- 46 UTC dates
- Estimated median S/N
- -10 dB
- Estimated 10th-90th percentile
- -20 to +1 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 110, moderate (-15 to -9 dB) 147, strong (≥ -8 dB) 203.
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 JA3FYC 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 JA3FYC
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
- PM85 · 50 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,586 km (approx.)
- Last such locator decoded
- 2026-09-30 20:20 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 | JA3FYC S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-05 18:09 | 40m | - / - | UW5ESX | -9 / - | 5 | Partial capture |
| 10-02 22:16 | 40m | - / - | EB3JT | -5 / - | 7 | Partial capture |
| 10-02 21:18 | 40m | - / -6 | 3Z4DX | -10 / - | 2 | ✓ Closing fragment |
| 10-02 21:13 | 40m | - / - | IW1FRD | +2 / - | 3 | Partial capture |
| 10-02 21:09 | 40m | - / - | F5PBG | -2 / - | 2 | Partial capture |
| 10-02 20:34 | 160m | -17 / - | RA1N | - / -17 | 2 | Partial capture |
| 10-02 20:23 | 160m | -7 / -23 | OM2WQ | -4 / -19 | 9 | ✓ Full exchange observed |
| 10-02 20:22 | 160m | - / - | DK8ZT | +2 / - | 2 | Partial capture |
| 10-02 20:20 | 160m | -8 / -22 | OK2BUZ | +19 / - | 6 | ✓ Closing observed |
| 10-02 20:20 | 160m | - / - | OZ6P | -20 / - | 3 | Partial capture |
| 10-02 20:19 | 160m | - / - | R7AW | -14 / - | 2 | Partial capture |
| 10-02 20:17 | 160m | -22 / -20 | DF2AJ | -16 / -21 | 5 | ✓ Full exchange observed |
| 10-02 20:06 | 160m | - / -13 | OM4AIM | +9 / - | 2 | ✓ Closing fragment |
| 10-02 19:34 | 160m | - / -23 | R9CS/P | +2 / - | 2 | Partial capture |
| 10-02 19:34 | 160m | -24 / - | LZ936BA | - / -18 | 2 | Partial capture |
| 10-02 19:30 | 160m | - / -14 | DO1BTW | +17 / - | 3 | ✓ Closing fragment |
| 10-02 19:20 | 160m | - / - | SP6LUV | +7 / - | 6 | Partial capture |
| 10-02 19:18 | 160m | - / -19 | LZ936BA | +10 / - | 2 | Partial capture |
| 10-02 18:09 | 40m | - / -19 | ON4AEO | 0 / - | 2 | ✓ Closing fragment |
| 10-02 18:03 | 40m | - / - | DF5AU | +6 / - | 2 | Partial capture |
| 10-02 18:00 | 40m | - / - | RL3T | -8 / - | 2 | Partial capture |
| 10-02 17:59 | 40m | - / - | OK2YB | +6 / - | 2 | Partial capture |
| 10-01 19:50 | 160m | - / -20 | IZ0COC | -6 / - | 3 | ✓ Closing fragment |
| 10-01 19:49 | 160m | - / - | SP3FHV | +4 / - | 4 | Partial capture |
| 10-01 19:36 | 80m | - / 0 | TF4M | -24 / - | 2 | ✓ Closing fragment |
| 09-30 20:42 | 160m | - / - | DL5EBS | -4 / - | 2 | Partial capture |
| 09-30 20:38 | 160m | - / -25 | OZ6P | -17 / - | 6 | Partial capture |
| 09-30 20:38 | 160m | - / +10 | DK2DB | -13 / - | 3 | ✓ Closing fragment |
| 09-30 20:19 | 160m | -18 / - | IS0BOZ | - / - | 2 | Partial capture |
| 09-30 20:15 | 160m | -10 / - | C37AC | - / - | 2 | Partial capture |
| 09-30 19:32 | 160m | - / - | RU3FM | -20 / - | 4 | Partial capture |
| 09-30 19:31 | 160m | - / -15 | R5BS | 0 / - | 2 | ✓ Closing fragment |
| 09-30 19:22 | 160m | - / -9 | OH0Z | -12 / - | 2 | ✓ Closing fragment |
| 09-30 19:19 | 160m | - / - | DF2GH | +12 / - | 2 | Partial capture |
| 09-30 19:16 | 160m | - / -18 | HA5AO | +18 / - | 2 | ✓ Closing fragment |
| 09-30 19:15 | 160m | - / -14 | ON8DM | +3 / - | 7 | ✓ Closing fragment |
| 09-29 20:47 | 80m | - / - | SP5ILO | +3 / - | 2 | Partial capture |
| 09-29 20:46 | 80m | -16 / -4 | UN0GY | -15 / - | 3 | ✓ Closing observed |
| 09-29 20:15 | 160m | - / -16 | OK2BPU | +6 / - | 2 | ✓ Closing fragment |
| 09-29 20:01 | 160m | - / - | DL2AMM | -14 / - | 3 | Partial capture |
| 09-29 19:47 | 160m | - / -8 | SM5A | +3 / - | 2 | ✓ Closing fragment |
| 09-29 19:42 | 160m | - / -3 | DJ7M | +15 / - | 3 | ✓ Closing fragment |
| 09-29 18:10 | 40m | -14 / -12 | DH3RD | +4 / - | 3 | ✓ Closing observed |
| 09-29 18:10 | 40m | - / - | IU3VSZ | +2 / - | 2 | Partial capture |
| 09-29 18:00 | 40m | - / - | EA2AA | -2 / - | 2 | ✓ Closing fragment |
| 09-28 21:05 | 80m | - / -14 | ER4KAA | -4 / - | 2 | ✓ Closing fragment |
| 09-28 19:56 | 80m | - / -14 | RU3KA | +4 / - | 3 | ✓ Closing fragment |
| 09-28 19:53 | 80m | - / -22 | LY1DY | +8 / - | 4 | Partial capture |
| 09-28 18:27 | 80m | - / -16 | F5UKW | +10 / - | 2 | ✓ Closing fragment |
| 09-28 18:24 | 80m | - / - | IC8BNR | -2 / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 211430 +4 1443 JA3FYC IW1FRD JN35 211800 -11 634 JA3FYC 3Z4DX R-06 (x2) 221630 -4 2392 JA3FYC EB3JT JN01 (x7) 180945 -9 2710 JA3FYC UW5ESX KN67 (x5)
UTC dB Audio Message 202230 +18 2799 JA3FYC OK2BUZ 73 202230 +2 2888 JA3FYC DK8ZT JO40 202300 -11 1391 JA3FYC OM2WQ JN88 202300 +2 2888 JA3FYC DK8ZT JO40 202315 -16 1385 OM2WQ JA3FYC -19 202330 -3 1391 JA3FYC OM2WQ JN88 202345 -5 2926 OM2WQ JA3FYC -19 202400 +4 1391 JA3FYC OM2WQ R-23 202400 -13 1140 JA3FYC DF2AJ -20 202415 -2 2941 OM2WQ JA3FYC RR73 202430 -8 1391 JA3FYC OM2WQ R-23 202445 -5 2941 OM2WQ JA3FYC RR73 202500 -2 1391 JA3FYC OM2WQ 73 203415 -24 1090 RA1N JA3FYC -17 (x2)
UTC dB Audio Message 195615 +4 567 JA3FYC RU3KA -14 (x3) 195845 -4 954 JA3FYC UA4FET LO13 210515 +0 1541 JA3FYC ER4KAA R-14 (x2) 204600 -16 2600 UN0GY JA3FYC PM85 204615 -14 2599 JA3FYC UN0GY -04 (x2) 204715 +3 1250 JA3FYC SP5ILO KO02 (x2) 193630 -24 1062 JA3FYC TF4M R+00 (x2) 203730 +4 1272 JA3FYC 5B4AMM -11 203800 +5 1272 JA3FYC RR73; JH0RXF <...> -12
UTC dB Audio Message 095600 -21 2131 JA3FYC F6CEE IN94 (x3) 083545 +9 2435 JA3FYC HB9TOC R-25 (x2) 102830 -24 1769 JA3FYC EY8BL R-02
UTC dB Audio Message 191145 -9 2830 JA3FYC PD1PET R-04 (x2) 191215 -14 1308 JA3FYC ON4CJU R-04 191245 -6 2831 JA3FYC PD1PET R-04 191245 -15 1308 JA3FYC ON4CJU 73 191315 -12 2830 JA3FYC PD1PET 73 194030 -12 1105 DJ2MS JA3FYC -16 (x2) 194515 -12 2112 JA3FYC IU5VMV JN53 (x4) 175800 -8 2666 JA3FYC ZS6HON R-20 (x3)
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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