ON7NDR — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving ON7NDR, decoded by SO8OO in southeastern Poland. 8 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-09-07 and 2026-09-09.
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 8 FT8 messages attributed to ON7NDR as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (75%), followed by 40 m (25%). In this small sample, the estimated median decoder S/N was -17 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-09-09 20:51 UTC
Observed FT8 message patterns
- Attributed sample
- 8 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -17 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 3, 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 ON7NDR in decoded directed-looking exchanges:
Most frequent locator attributed to ON7NDR
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
- JO11 · 3 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,331 km (approx.)
- Last such locator decoded
- 2026-09-09 20:51 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 | ON7NDR S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-16 20:10 | 40m | - / 0 | GJ0KYZ | -6 / - | 3 | ✓ Closing fragment |
| 09-16 15:10 | 40m | - / - | S51PV | -12 / - | 3 | Partial capture |
| 09-16 15:09 | 40m | - / +3 | DF2KD | -13 / - | 2 | Partial capture |
| 09-16 15:08 | 40m | - / - | HA7TM | +20 / - | 3 | Partial capture |
| 09-09 20:42 | 80m | - / -14 | YO9HP | -2 / - | 2 | ✓ Closing fragment |
| 09-09 20:41 | 80m | - / -17 | UA4FKT | +3 / - | 4 | ✓ Closing fragment |
| 09-09 20:39 | 80m | -17 / -19 | YO4NF | +6 / -2 | 4 | ✓ Full exchange observed |
| 09-09 20:21 | 80m | - / -8 | LB5WB | -14 / - | 3 | ✓ Closing fragment |
| 09-09 20:17 | 80m | -24 / -11 | IQ4JO | -10 / -12 | 3 | ✓ Full exchange observed |
| 09-09 19:43 | 80m | - / -10 | F5RRS | -4 / - | 4 | ✓ Closing fragment |
| 09-09 19:43 | 80m | - / - | SP5EXA | +22 / - | 5 | Partial capture |
| 09-09 19:41 | 80m | -14 / -16 | HA7TM | +14 / - | 3 | ✓ Closing observed |
| 09-08 18:17 | 80m | - / - | UA4FKT | -10 / - | 4 | Partial capture |
| 09-08 18:09 | 80m | - / -13 | DO9SAM | +4 / - | 3 | Partial capture |
| 09-08 18:04 | 80m | - / -23 | DK7ZT | +5 / - | 2 | ✓ Closing fragment |
| 09-08 18:04 | 80m | - / -1 | PA3GAE | -4 / - | 4 | ✓ Closing fragment |
| 09-07 20:39 | 40m | - / +8 | DK7ZT | -2 / - | 3 | Partial capture |
| 09-07 20:39 | 40m | - / -10 | PE1NPS | -1 / - | 5 | Partial capture |
| 09-07 20:39 | 40m | -14 / -14 | UR4QWW | -5 / -5 | 8 | ✓ Full exchange observed |
| 09-07 20:37 | 40m | - / -9 | F1IQH | -7 / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 150900 +17 672 ON7NDR HA7TM JN97 150900 -8 928 ON7NDR G0RVY JO01 150900 -13 1743 ON7NDR DF2KD JO30 150930 +22 672 ON7NDR HA7TM JN97 151000 -12 2370 ON7NDR S51PV JN76 151000 -13 1743 ON7NDR DF2KD R+03 151030 -10 2368 ON7NDR S51PV JN76 (x2) 201000 -9 341 ON7NDR OE8PIT JN66 201000 -6 2502 ON7NDR GJ0KYZ +00 (x2) 201030 -8 2462 ON7NDR DH0GBC +03 201100 -5 2502 ON7NDR GJ0KYZ RR73 201400 +0 2496 ON7NDR 9A4ZM JN86 201530 -18 1376 ON7NDR TF1FT HP94
UTC dB Audio Message 202100 -20 218 CQ ON7NDR JO11 202145 -20 198 ON7NDR LB5WB -08 (x3) 203945 +4 2059 ON7NDR YO4NF -19 (x2) 204030 -17 2059 YO4NF ON7NDR R-02 204045 +8 2059 ON7NDR YO4NF RR73 204115 +2 2059 ON7NDR UA4FKT LO23 (x3) 204245 -5 1130 ON7NDR YO9HP -14 204245 +2 2059 ON7NDR UA4FKT 73 204345 +1 1130 ON7NDR YO9HP RR73 205100 -17 2490 CQ ON7NDR JO11
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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