JA3QOS — 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 JA3QOS, decoded by SO8OO in southeastern Poland. 7 FT8 messages attributed to this token as transmitter, on 20m, across 1 UTC dates in the available aggregate history. Last observed 2026-08-22.
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 7 FT8 messages attributed to JA3QOS as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was -15 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 7 messages
- Active dates
- 1 UTC dates
- Estimated median S/N
- -15 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 5, strong (≥ -8 dB) 0.
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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with JA3QOS in decoded directed-looking exchanges:
Most frequent locator attributed to JA3QOS
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
- PM74
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,565 km (approx.)
- Last such locator decoded
- 2026-08-22 16:19 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 | JA3QOS S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 11-04 12:03 | 40m | - / -20 | R2ZCA | -20 / - | 2 | ✓ Closing fragment |
| 08-22 16:33 | 20m | -13 / -12 | 7Z1BQ | -10 / -12 | 3 | Partial capture |
| 08-22 16:29 | 20m | - / -11 | ON4AZR | +1 / - | 4 | ✓ Closing fragment |
| 08-22 16:26 | 20m | - / -8 | OE6EGE | -2 / - | 5 | Partial capture |
| 08-22 16:11 | 20m | - / -4 | R7AZ | -2 / - | 2 | ✓ Closing fragment |
| 08-22 16:07 | 20m | - / -3 | ON4IQ | +14 / - | 5 | ✓ Closing fragment |
| 08-22 16:05 | 20m | -16 / -4 | 4L7T | -12 / -8 | 5 | ✓ Full exchange observed |
| 08-22 16:02 | 20m | - / -19 | F1THK | -1 / - | 5 | ✓ Closing fragment |
| 08-09 20:03 | 40m | - / -14 | DL5MKR | -11 / - | 3 | ✓ Closing fragment |
| 08-09 19:59 | 40m | - / - | ON7NQ | -4 / - | 15 | Partial capture |
| 08-09 19:54 | 40m | - / - | Z34K | -12 / - | 3 | Partial capture |
| 08-09 19:52 | 40m | - / -14 | DL5YT | -16 / - | 2 | ✓ Closing fragment |
| 08-09 19:50 | 40m | - / - | ON7NQ | -3 / - | 11 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 200345 -12 1589 JA3QOS DL5MKR JO60 200415 -6 1629 JA3QOS SP3HUU JO71 200415 -2 2823 JA3QOS ON7NQ JO21 200415 -9 1589 JA3QOS DL5MKR R-14 200445 -3 2823 JA3QOS ON7NQ JO21 200445 -11 1589 JA3QOS DL5MKR 73 200545 -7 2824 JA3QOS ON7NQ JO21 (x7) 120330 -19 1834 JA3QOS R2ZCA -20 (x2)
UTC dB Audio Message 161130 -1 1210 JA3QOS R7AZ 73 161515 -15 911 CR7BUJ JA3QOS R-19 161900 -12 788 UA2FFD JA3QOS PM74 162645 -6 2174 JA3QOS OE6EGE -08 (x5) 162915 +0 1334 JA3QOS ON4AZR JO21 (x4) 163300 -10 608 JA3QOS 7Z1BQ -12 163315 -13 788 7Z1BQ JA3QOS R-12 (x2)
CW
No CW receptions recorded for this callsign in the last 30 days.
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