JA5AQC — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving JA5AQC, decoded by SO8OO in southeastern Poland. 288 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 42 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-10-01.
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 288 FT8 messages attributed to JA5AQC as the transmitting token by decoded message structure across 42 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (43%), followed by 40 m (35%) and 20 m (22%). 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 -16 dB.
Overview
Bands
Last attributed message: 2026-10-01 20:10 UTC
Observed FT8 message patterns
- Attributed sample
- 288 messages
- Active dates
- 42 UTC dates
- Estimated median S/N
- -16 dB
- Estimated 10th-90th percentile
- -22 to -10 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 146, moderate (-15 to -9 dB) 121, strong (≥ -8 dB) 21.
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 JA5AQC 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 JA5AQC
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
- PM63 · 171 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,540 km (approx.)
- Last such locator decoded
- 2026-10-01 20:10 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 | JA5AQC S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-04 20:30 | 80m | - / - | RT6Z | -4 / - | 2 | Partial capture |
| 10-04 20:19 | 80m | - / - | OE6BME | +5 / - | 4 | Partial capture |
| 10-04 20:16 | 80m | - / - | RT6Z | -1 / - | 2 | Partial capture |
| 10-04 20:16 | 80m | - / -15 | SP5LST | +9 / - | 3 | Partial capture |
| 10-04 20:11 | 80m | - / -10 | OT7K | +13 / - | 2 | ✓ Closing fragment |
| 10-02 21:26 | 40m | - / - | CT1FIU | -16 / - | 2 | Partial capture |
| 10-02 21:19 | 40m | - / - | EA1AIQ | -4 / - | 3 | Partial capture |
| 10-02 20:57 | 40m | - / -17 | EA1FAW | -20 / - | 2 | Partial capture |
| 10-02 20:39 | 40m | - / -11 | PD0DEX | +1 / - | 2 | ✓ Closing fragment |
| 10-02 20:36 | 40m | - / - | IK1JUS | +5 / - | 3 | Partial capture |
| 10-02 20:36 | 40m | - / -13 | DL9AN | -10 / - | 2 | Partial capture |
| 10-02 20:35 | 40m | - / +2 | OT7K | +13 / - | 2 | ✓ Closing fragment |
| 10-01 20:11 | 80m | - / - | YL3KZ | +8 / - | 9 | Partial capture |
| 10-01 20:10 | 80m | -23 / -3 | TF4M | -4 / - | 4 | ✓ Closing observed |
| 09-30 22:08 | 40m | - / -16 | HB9EBM | +18 / - | 2 | ✓ Closing fragment |
| 09-30 20:17 | 80m | - / -15 | R6HV | +3 / - | 2 | ✓ Closing fragment |
| 09-30 20:05 | 80m | - / - | UA3IDQ | -9 / - | 3 | Partial capture |
| 09-30 20:04 | 80m | - / -9 | OH1NDA | 0 / - | 2 | ✓ Closing fragment |
| 09-28 20:55 | 80m | -11 / -12 | RT6C | +4 / - | 2 | ✓ Closing observed |
| 09-27 21:20 | 80m | - / - | IW3RUA | -1 / - | 6 | Partial capture |
| 09-27 21:18 | 80m | -17 / -16 | SP9TBT | +6 / -24 | 9 | ✓ Full exchange observed |
| 09-27 21:07 | 80m | - / - | DC6KW | -4 / - | 6 | Partial capture |
| 09-27 21:05 | 80m | -18 / -6 | LA8AV | +7 / -18 | 5 | ✓ Full exchange observed |
| 09-27 21:01 | 80m | -21 / -16 | DG5TF | +9 / -20 | 4 | ✓ Full exchange observed |
| 09-27 20:41 | 80m | - / - | DD3KF | +6 / - | 6 | Partial capture |
| 09-27 20:41 | 80m | - / - | DG5TF | +5 / - | 4 | Partial capture |
| 09-27 20:41 | 80m | - / -25 | LY1DY | +4 / - | 5 | ✓ Closing fragment |
| 09-27 20:40 | 80m | - / -15 | DK2CX | +7 / - | 3 | ✓ Closing fragment |
| 09-27 20:37 | 80m | -21 / -14 | LA3ZPA | +4 / -19 | 6 | ✓ Full exchange observed |
| 09-27 20:36 | 80m | -20 / -14 | SP9JZU | +10 / - | 4 | ✓ Closing observed |
| 09-27 20:23 | 80m | -18 / - | YL2AO | - / - | 2 | Partial capture |
| 09-26 21:21 | 40m | - / - | PA1VW | -6 / - | 2 | Partial capture |
| 09-26 21:21 | 40m | - / - | F1GUQ | -8 / - | 5 | Partial capture |
| 09-26 21:07 | 40m | -15 / -11 | TK4QP | -8 / -22 | 5 | ✓ Full exchange observed |
| 09-25 21:15 | 80m | - / -20 | RC4HAA | -2 / - | 2 | ✓ Closing fragment |
| 09-25 21:07 | 80m | - / - | GI7LOU | +1 / - | 5 | Partial capture |
| 09-24 21:54 | 40m | - / - | G0RVY | +2 / - | 2 | Partial capture |
| 09-23 20:29 | 80m | - / -14 | CN8WK | -4 / - | 2 | ✓ Closing fragment |
| 09-23 20:22 | 80m | - / -24 | DK9PH | +13 / - | 2 | ✓ Closing fragment |
| 09-22 21:06 | 40m | -18 / -4 | MI7XHT | -22 / - | 4 | ✓ Closing observed |
| 09-21 20:55 | 80m | - / -15 | DL7VEE | +14 / - | 2 | ✓ Closing fragment |
| 09-21 20:46 | 40m | - / - | F5MYK | -10 / - | 2 | Partial capture |
| 09-21 20:46 | 40m | - / - | UA3ZNQ | +2 / - | 2 | Partial capture |
| 09-21 20:44 | 40m | -16 / - | PA3EVY | - / -20 | 4 | ✓ Closing fragment |
| 09-21 20:43 | 40m | - / - | IU4PPL | -11 / - | 3 | Partial capture |
| 09-21 20:42 | 40m | - / - | CT2HEX | -14 / - | 3 | Partial capture |
| 09-21 20:42 | 40m | - / - | F5MYK | -12 / - | 2 | Partial capture |
| 09-21 20:42 | 40m | - / - | UA3ZNQ | 0 / - | 3 | Partial capture |
| 09-21 20:40 | 40m | -19 / - | HA5AIL | - / -15 | 7 | ✓ Closing fragment |
| 09-21 20:38 | 40m | - / -14 | EC3A | -11 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 201130 +16 1610 JA5AQC OT7K -10 (x2) 201300 -1 2290 JA5AQC RZ4AT LN28 201530 +7 2477 JA5AQC ON8DM JO10 201600 +15 2340 JA5AQC SP5LST -15 201600 -2 2932 JA5AQC RT6Z KN98 201630 +9 2340 JA5AQC SP5LST -15 201630 +0 2932 JA5AQC RT6Z KN98 201700 +4 2340 JA5AQC SP5LST -15 201900 +3 1233 JA5AQC OE6BME JN76 (x4) 203030 -7 2932 JA5AQC RT6Z KN98 (x2)
UTC dB Audio Message 203645 +8 1431 JA5AQC IK1JUS JN35 203645 -9 338 JA5AQC DL9AN -13 203715 +1 1431 JA5AQC IK1JUS JN35 (x2) 203800 -24 1632 JA5AQC EA8BIA RR73 203930 +2 1920 JA5AQC PD0DEX -11 (x2) 205730 -20 1472 JA5AQC EA1FAW -17 (x2) 211400 -13 1658 JA5AQC G0JJG JO02 211900 -4 2158 JA5AQC EA1AIQ IN52 (x3) 212600 -17 1507 JA5AQC CT1FIU IN50 (x2)
UTC dB Audio Message 214345 +8 2611 JA5AQC 9A4ZM JN86 (x2)
UTC dB Audio Message 222045 -11 2234 JA5AQC EI9IB -13 (x2) 222415 -8 2805 JA5AQC IW0RLC JN63 222530 -12 2435 JA5AQC 8Z1IT RR73 214230 -15 2131 CT2KCK JA5AQC PM63 (x2) 204045 +4 2136 JA5AQC ER3BN -10 (x2) 222300 -15 1330 ER1CW JA5AQC PM63 (x3) 222530 -13 1331 UX0CZ JA5AQC -11 222700 -14 1330 M0XUE JA5AQC PM63 (x3)
UTC dB Audio Message 222845 -21 1779 JA5AQC EA8UP -12 (x3) 085730 -19 2030 JA5AQC IW8PQ -08 (x3) 074500 -13 1252 JA5AQC II7MGXX -03 074530 -9 1251 JA5AQC RR73; YL2KF <...> +26 074930 +5 1252 JA5AQC II7MGXX -02 075000 -4 1252 JA5AQC RR73; DN9DGB <...> -10 085845 -19 1793 JA5AQC SV9MBL +11 (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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