JA0DAI — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving JA0DAI, decoded by SO8OO in southeastern Poland. 92 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 25 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-18.
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 92 FT8 messages attributed to JA0DAI as the transmitting token by decoded message structure across 25 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (45%), followed by 80 m (29%) and 160 m (23%). 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: 2026-10-18 20:12 UTC
Observed FT8 message patterns
- Attributed sample
- 92 messages
- Active dates
- 25 UTC dates
- Estimated median S/N
- -16 dB
- Estimated 10th-90th percentile
- -22 to -6 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 47, moderate (-15 to -9 dB) 32, strong (≥ -8 dB) 13.
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 JA0DAI 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 JA0DAI
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
- PM97 · 30 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,513 km (approx.)
- Last such locator decoded
- 2026-09-18 20:32 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 | JA0DAI S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-22 20:22 | 160m | - / +1 | 4J3DJ | +1 / - | 3 | ✓ Closing fragment |
| 10-22 20:14 | 160m | - / - | R6DSW | -8 / - | 2 | Partial capture |
| 10-19 20:36 | 160m | - / - | E73DPR | +12 / - | 2 | Partial capture |
| 10-19 20:36 | 160m | - / -20 | IZ6TSA | -4 / - | 2 | Partial capture |
| 10-18 21:11 | 80m | - / -18 | F6CTT | -3 / - | 2 | ✓ Closing fragment |
| 10-18 20:46 | 160m | - / - | YO2NAA | -4 / - | 2 | Partial capture |
| 10-18 20:19 | 160m | - / - | SP6ZC | 0 / - | 2 | Partial capture |
| 10-18 20:18 | 160m | - / - | SQ3RX | 0 / - | 7 | Partial capture |
| 10-18 20:12 | 80m | - / - | YL3KZ | +3 / - | 2 | Partial capture |
| 10-18 20:12 | 80m | -9 / -13 | OE3KJO | 0 / -22 | 4 | ✓ Full exchange observed |
| 10-18 20:09 | 80m | -10 / -8 | SP5GMM | -4 / -8 | 4 | ✓ Full exchange observed |
| 10-18 20:09 | 80m | - / -18 | OE5ABL | -6 / - | 4 | Partial capture |
| 10-18 20:07 | 80m | -16 / -14 | YU7BW | +20 / -6 | 5 | ✓ Full exchange observed |
| 10-17 20:53 | 160m | - / - | IZ7NLJ | -10 / - | 3 | Partial capture |
| 10-17 20:37 | 40m | - / -18 | RD7KW | -3 / - | 4 | ✓ Closing fragment |
| 10-16 20:16 | 80m | - / -12 | PI4DX | +11 / - | 3 | ✓ Closing fragment |
| 10-16 20:10 | 160m | - / -8 | 4J3DJ | -8 / - | 2 | ✓ Closing fragment |
| 10-16 05:51 | 10m | - / -10 | 4Z5NN | +2 / - | 2 | ✓ Closing fragment |
| 10-15 20:52 | 80m | -20 / -14 | ON4IQ | +10 / -15 | 5 | ✓ Full exchange observed |
| 10-15 20:46 | 80m | -19 / - | ZS2PS | - / -18 | 3 | ✓ Closing fragment |
| 10-14 20:45 | 80m | -17 / -9 | 9A2AJ | -1 / -15 | 3 | ✓ Full exchange observed |
| 10-14 20:36 | 160m | - / - | IK0PHY | -6 / - | 2 | Partial capture |
| 10-14 20:21 | 160m | - / -12 | E73DPR | +11 / - | 2 | ✓ Closing fragment |
| 10-14 20:11 | 160m | -17 / -18 | E73S | +14 / - | 4 | ✓ Closing observed |
| 10-14 20:10 | 160m | - / -13 | IZ6BRN | 0 / - | 6 | ✓ Closing fragment |
| 10-07 20:42 | 80m | - / -15 | HA1TNX | +14 / - | 2 | ✓ Closing fragment |
| 10-06 20:57 | 160m | - / -21 | UX5XK | +16 / - | 2 | Partial capture |
| 10-06 20:56 | 160m | - / -18 | OM3TWM | +8 / - | 4 | Partial capture |
| 10-06 20:41 | 160m | - / -19 | IZ0BYM | -5 / - | 2 | Partial capture |
| 10-06 20:39 | 160m | - / - | IK0PHY | -16 / - | 2 | Partial capture |
| 10-05 20:40 | 160m | - / -12 | LZ2IP | +15 / - | 3 | ✓ Closing fragment |
| 10-05 20:33 | 160m | - / -16 | RO7A | -11 / - | 4 | ✓ Closing fragment |
| 10-04 20:27 | 80m | - / -12 | DJ7M | +18 / - | 2 | ✓ Closing fragment |
| 10-04 20:25 | 80m | - / -10 | OT7K | +10 / - | 2 | ✓ Closing fragment |
| 10-02 20:48 | 160m | - / -21 | SP3FAR | +15 / - | 5 | ✓ Closing fragment |
| 10-02 20:44 | 160m | - / -24 | RL3F | -18 / - | 3 | Partial capture |
| 10-02 20:19 | 160m | - / - | SM5FUG | -8 / - | 2 | Partial capture |
| 10-02 20:18 | 160m | - / - | 9A2RD | -1 / - | 5 | Partial capture |
| 10-02 20:17 | 160m | - / -18 | OK2BUZ | +18 / - | 5 | ✓ Closing fragment |
| 10-02 20:14 | 160m | - / - | DK3UA | +5 / - | 5 | Partial capture |
| 10-02 20:14 | 160m | -18 / - | SP3BPU | +14 / - | 7 | ✓ Closing observed |
| 10-02 20:14 | 160m | - / -19 | DJ9HX | +2 / - | 2 | ✓ Closing fragment |
| 10-02 20:12 | 160m | - / -12 | OK2BPU | +6 / - | 2 | ✓ Closing fragment |
| 10-02 20:11 | 160m | - / - | DL1SVI | -11 / - | 2 | Partial capture |
| 10-02 20:09 | 160m | -10 / -7 | OM4AIM | +6 / -17 | 4 | ✓ Full exchange observed |
| 10-02 20:06 | 160m | -14 / -8 | OH2CLX | +8 / -11 | 3 | ✓ Full exchange observed |
| 10-01 20:42 | 80m | - / -21 | I0KMJ | +10 / - | 4 | ✓ Closing fragment |
| 10-01 20:15 | 160m | - / - | SP3BPU | +4 / - | 5 | Partial capture |
| 09-30 20:41 | 160m | - / -25 | OH1NDA | +3 / - | 2 | Partial capture |
| 09-30 20:33 | 160m | - / - | SV8JNR | -11 / - | 5 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 202145 -2 1760 JA0DAI SQ3RX JO81 204630 +0 2965 JA0DAI YO2NAA KN05 (x3) 203630 +0 1702 JA0DAI IZ6TSA R-20 203630 +14 2696 JA0DAI E73DPR JN92 203700 -7 1702 JA0DAI IZ6TSA R-20 203700 +9 2696 JA0DAI E73DPR JN92 201400 -10 2012 JA0DAI R6DSW KN85 (x2) 202230 -2 483 JA0DAI 4J3DJ R+01 (x3) 202915 -18 2013 JA0DAI R6DSW KN85 (x2)
UTC dB Audio Message 200945 -9 1689 SP5GMM JA0DAI -08 201000 -6 1689 JA0DAI OE5ABL -18 201030 -5 1830 JA0DAI SP5GMM R-08 201030 -2 1689 JA0DAI OE5ABL -18 201045 -12 1689 SP5GMM JA0DAI RR73 201100 -3 1830 JA0DAI SP5GMM 73 201215 -11 1608 OE3KJO JA0DAI -22 201230 +0 1762 JA0DAI OE3KJO R-13 201245 +7 1689 JA0DAI YL3KZ KO16 201245 -7 1608 OE3KJO JA0DAI RR73 201300 +1 1762 JA0DAI OE3KJO 73 201315 -1 1689 JA0DAI YL3KZ KO16 211130 -3 2091 JA0DAI F6CTT R-18 (x2) 211200 -2 2546 JA0DAI DL2MIJ JN58
UTC dB Audio Message 210630 +7 458 JA0DAI TA7ARH R-13 (x2) 204230 -5 1204 JA0DAI SN100PKP R-07 205145 -5 1801 JA0DAI SY1BKQ R-12 (x2) 205300 -3 902 JA0DAI II0IHMG -14 (x3) 211630 -10 1887 JA0DAI CN8NS R-16 (x3) 203700 -7 2756 JA0DAI RD7KW KN75 (x4)
UTC dB Audio Message 111415 +2 666 JA0DAI CR7BRV R-18 (x2) 073730 -23 1532 JA0DAI SV9CJO R-02 (x2) 074715 -17 2026 JA0DAI IT9IRV 73 075345 -19 1872 JA0DAI I0KMJ JN62 (x3) 075815 -4 1690 JA0DAI LZ2II R-04 (x4) 114430 -23 1455 JA0DAI IZ2ACM 73 055130 +3 489 JA0DAI 4Z5NN R-10 (x2)
UTC dB Audio Message 150430 -5 2333 JA0DAI S58WW JN76 202215 -1 2501 JA0DAI DL1DV R-15 (x2) 091930 -17 1804 JA0DAI RR73; UN9PQ <...> -24 135615 +5 689 JA0DAI <...> R-07 135645 +7 688 JA0DAI <EN35UKR> R-07 (x2) 214615 -4 643 JA0DAI ZA/IK3BNO R-15 214645 -16 2043 JA0DAI BG7BVI -10 211415 -3 1884 JA0DAI AO5FSB R-06 211445 -4 2641 JA0DAI SV5BYP KM46 211445 -5 1884 JA0DAI AO5FSB 73 211515 -17 2142 JA0DAI SV5BYP KM46 (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.
CW
CW history is temporarily unavailable.
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