DO1CHR — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving DO1CHR, decoded by SO8OO in southeastern Poland. 106 FT8 messages attributed to this token as transmitter, on 10m, across 3 UTC dates in the available aggregate history. Observed between 2026-07-24 and 2026-08-18.
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 106 FT8 messages attributed to DO1CHR as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (100%). Most decodes (73%) fell within the six-hour window 11:00-17:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -16 dB.
Overview
Observed FT8 message patterns
- Attributed sample
- 106 messages
- Active dates
- 3 UTC dates
- Estimated median S/N
- -16 dB
- Estimated 10th-90th percentile
- -20 to -11 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 60, moderate (-15 to -9 dB) 45, strong (≥ -8 dB) 1.
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 DO1CHR 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 DO1CHR
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
- JO32 · 70 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,067 km (approx.)
- Last such locator decoded
- 2026-08-18 11:16 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 | DO1CHR S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-28 09:07 | 10m | - / - | IU4PPL | -2 / - | 2 | Partial capture |
| 08-18 11:16 | 10m | -20 / - | LY2BBF | - / -17 | 2 | Partial capture |
| 07-25 08:10 | 10m | -15 / - | MI7RDK | - / -5 | 3 | ✓ Closing fragment |
| 07-25 08:08 | 10m | -12 / - | ES0RY | - / +6 | 3 | ✓ Closing fragment |
| 07-25 08:01 | 10m | -14 / +6 | G4TTQ | -13 / - | 5 | ✓ Full exchange observed |
| 07-25 07:58 | 10m | -16 / - | OH6NIO | - / -11 | 4 | Partial capture |
| 07-25 07:57 | 10m | -18 / - | MW8KUZ | - / +8 | 2 | ✓ Closing fragment |
| 07-25 07:51 | 10m | -17 / - | CT2GQA | - / -15 | 4 | ✓ Closing fragment |
| 07-25 07:08 | 10m | -18 / - | HG8LXL | - / -10 | 2 | Partial capture |
| 07-25 07:06 | 10m | -18 / - | S59MA | - / - | 3 | ✓ Closing fragment |
| 07-24 16:33 | 10m | -16 / - | CN2DX | - / - | 4 | Partial capture |
| 07-24 16:24 | 10m | -14 / -13 | I8OHQ | -14 / 0 | 3 | ✓ Full exchange observed |
| 07-24 16:13 | 10m | -14 / - | 7Q5BM | - / - | 2 | Partial capture |
| 07-24 16:01 | 10m | -14 / - | YO7LMU | - / - | 2 | ✓ Closing fragment |
| 07-24 15:55 | 10m | -14 / - | 4X1ZQ | - / - | 3 | Partial capture |
| 07-24 15:53 | 10m | -14 / - | OM1AGE/P | - / - | 2 | Partial capture |
| 07-24 15:52 | 10m | -17 / - | HA7TM | - / - | 2 | Partial capture |
| 07-24 15:48 | 10m | -16 / - | E75W | - / -20 | 3 | ✓ Closing fragment |
| 07-24 15:43 | 10m | -16 / - | 7Q5BM | - / - | 8 | Partial capture |
| 07-24 15:37 | 10m | -11 / - | 7Q5BM | - / - | 3 | Partial capture |
| 07-24 15:31 | 10m | -13 / -7 | SV1CQN | -10 / -11 | 5 | ✓ Full exchange observed |
| 07-24 15:30 | 10m | -16 / - | HA8LKI | - / - | 2 | Partial capture |
| 07-24 15:23 | 10m | -13 / - | LY2BBF | - / +5 | 3 | ✓ Closing fragment |
| 07-24 15:21 | 10m | -15 / - | 3Z6AEF | - / +5 | 2 | Partial capture |
| 07-24 15:17 | 10m | -15 / - | SP7CWZ | - / +10 | 5 | Partial capture |
| 07-24 15:01 | 10m | -16 / - | OZ5VO | - / - | 2 | Partial capture |
| 07-24 12:58 | 10m | - / - | EB3JT | -20 / - | 4 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 080430 -15 1215 ES0RY DO1CHR JO32 (x4) 081045 -14 1215 MI7RDK DO1CHR JO32 (x3) 081645 -17 1215 SM0JHB DO1CHR JO32 080945 -21 2207 YT2DZB DO1CHR JO32 111115 -10 806 <...> DO1CHR R+05 111630 -19 1584 LY2BBF DO1CHR JO32 (x2) 124630 -14 1503 DO1CHR I1/IZ2MHO -15 090730 -2 492 DO1CHR IU4PPL JN54 (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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