9Z4CH — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving 9Z4CH, decoded by SO8OO in southeastern Poland. 3 FT8 messages attributed to this token as transmitter, on 20m, across 1 UTC dates in the available aggregate history. Last observed 2026-07-14.
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 3 FT8 messages attributed to 9Z4CH as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The available sample contains attributed decodes on 20 m (100%). The sample is too small to infer a recurring UTC-hour or received-S/N pattern.
Overview
Observed FT8 message patterns
- Attributed sample
- 3 messages
- Active dates
- 1 UTC dates
- S/N summary
- Too few decodes
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
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 9Z4CH in decoded directed-looking exchanges:
Most frequent locator attributed to 9Z4CH
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
- FK90 · 3 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,602 km (approx.)
- Last such locator decoded
- 2026-07-14 03:31 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 | 9Z4CH S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 07-14 05:26 | 40m | - / -15 | DK7ZT | -22 / - | 2 | Partial capture |
| 07-14 05:20 | 40m | - / -15 | DH1JG | -10 / - | 7 | Partial capture |
| 07-14 05:10 | 40m | - / -20 | DL8WEM | -3 / - | 3 | ✓ Closing fragment |
| 07-14 05:01 | 40m | - / - | DL2AXA | -16 / - | 5 | Partial capture |
| 07-14 04:47 | 40m | - / -14 | DK7ZT | -22 / - | 2 | Partial capture |
| 07-14 04:42 | 40m | - / - | I3LID | -11 / - | 5 | Partial capture |
| 07-14 04:30 | 40m | - / - | DH1BAS | -9 / - | 3 | Partial capture |
| 07-14 04:28 | 40m | - / -10 | F1MXE | -10 / - | 2 | Partial capture |
| 07-14 04:28 | 40m | - / - | SV1ENM | -7 / - | 3 | Partial capture |
| 07-14 04:25 | 40m | - / - | I3LID | -11 / - | 8 | Partial capture |
| 07-14 03:54 | 20m | - / - | RW3FY | -10 / - | 5 | Partial capture |
| 07-14 03:41 | 20m | - / - | R6AO | -19 / - | 5 | Partial capture |
| 07-14 03:35 | 20m | - / -4 | RN6MA | -11 / - | 3 | Partial capture |
| 07-14 03:35 | 20m | - / -9 | UA3QQ | -20 / - | 6 | Partial capture |
| 07-14 03:31 | 20m | - / - | RW3FY | -10 / - | 24 | Partial capture |
| 07-14 03:26 | 20m | - / - | RM8L | -19 / - | 5 | Partial capture |
| 07-14 03:24 | 20m | - / -8 | R6SJ | -9 / - | 7 | Partial capture |
| 07-14 03:23 | 20m | - / - | R6AO | -17 / - | 2 | Partial capture |
| 07-14 03:22 | 20m | - / +2 | RN6MA | -8 / - | 3 | Partial capture |
| 07-14 03:22 | 20m | - / - | RM8L | -17 / - | 3 | Partial capture |
| 07-14 03:21 | 20m | - / - | RY6O | -18 / - | 4 | Partial capture |
| 07-14 03:18 | 20m | - / - | RX3ASQ | -20 / - | 2 | Partial capture |
| 07-14 03:16 | 20m | - / -9 | R6SJ | -12 / - | 7 | Partial capture |
| 07-14 03:16 | 20m | - / - | RY6O | -24 / - | 2 | Partial capture |
| 07-14 03:12 | 20m | - / - | R6AO | -20 / - | 4 | Partial capture |
| 07-14 03:11 | 20m | - / - | RY6O | -23 / - | 2 | Partial capture |
| 07-14 03:11 | 20m | - / +2 | UA6FM | -12 / - | 3 | ✓ Closing fragment |
| 07-14 03:11 | 20m | - / - | RM8L | -18 / - | 4 | Partial capture |
| 07-14 03:07 | 20m | - / - | R6AO | -22 / - | 2 | Partial capture |
| 07-14 03:07 | 20m | - / -5 | RN6MA | -4 / - | 2 | Partial capture |
| 07-14 03:06 | 20m | - / - | RM8L | -18 / - | 2 | Partial capture |
| 07-14 03:01 | 20m | - / - | RM8L | -20 / - | 6 | Partial capture |
| 07-14 03:01 | 20m | - / +2 | RN6MA | -9 / - | 3 | Partial capture |
| 07-14 03:01 | 20m | - / - | UT2AU | -2 / - | 5 | Partial capture |
| 07-14 02:48 | 20m | - / - | RM8L | -15 / - | 6 | Partial capture |
| 07-14 02:47 | 20m | - / - | UT2AU | -10 / - | 2 | Partial capture |
| 07-14 02:42 | 20m | - / - | UT2AU | -6 / - | 3 | Partial capture |
| 07-14 02:38 | 20m | - / - | RM8L | -17 / - | 7 | Partial capture |
| 07-14 02:37 | 20m | - / - | UA6AFS | -14 / - | 3 | Partial capture |
| 07-14 02:37 | 20m | - / - | UT2AU | 0 / - | 2 | Partial capture |
| 07-14 02:32 | 20m | - / - | UA6AFS | -14 / - | 2 | Partial capture |
| 07-14 02:31 | 20m | - / - | RA0SCA | -11 / - | 6 | Partial capture |
| 07-14 02:31 | 20m | - / - | RM8L | -20 / - | 2 | Partial capture |
| 07-14 02:31 | 20m | - / -4 | RN6MA | -3 / - | 2 | Partial capture |
| 07-14 02:28 | 20m | - / - | UT5MD | -13 / - | 2 | Partial capture |
| 07-14 02:26 | 20m | - / - | UA6AFS | -14 / - | 4 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 050930 -14 1911 9Z4CH IW2DNI JN45 051030 -5 733 9Z4CH DL8WEM JN48 (x3) 051200 -15 1816 9Z4CH IW2DNI JN45 052030 -8 735 9Z4CH DH1JG JO31 (x7) 052600 -24 1906 9Z4CH DK7ZT -15 (x3)
UTC dB Audio Message 034430 -12 2610 9Z4CH RW3FY KO95 (x2) 034600 -18 1703 9Z4CH R3MW KO97 034630 -11 2611 9Z4CH RW3FY KO95 (x12)
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