HF1Z — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving HF1Z, decoded by SO8OO in southeastern Poland. 1,816 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, across 9 UTC dates in the available aggregate history. Observed between 2026-09-21 and 2026-10-07.
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 1,816 FT8 messages attributed to HF1Z as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (55%), followed by 60 m (31%) and 40 m (14%). The busiest six-hour window was 17:00-23:00 UTC, containing 43% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (84%); the estimated median was 0 dB.
Overview
Bands
Last attributed message: 2026-10-07 04:31 UTC
Observed FT8 message patterns
- Attributed sample
- 1,816 messages
- Active dates
- 9 UTC dates
- Estimated median S/N
- 0 dB
- Estimated 10th-90th percentile
- -12.4 to +9 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 116, moderate (-15 to -9 dB) 182, strong (≥ -8 dB) 1,518.
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 HF1Z 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 HF1Z
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
- JO73 · 935 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 613 km (approx.)
- Last such locator decoded
- 2026-10-07 04:30 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 | HF1Z S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-07 04:30 | 80m | +3 / -12 | DG8DBW | -12 / -20 | 5 | ✓ Full exchange observed |
| 10-07 04:29 | 80m | +1 / -5 | HA5CPN | -2 / -5 | 5 | ✓ Full exchange observed |
| 10-07 04:28 | 80m | - / -1 | TK1CX | -3 / - | 2 | Partial capture |
| 10-07 04:26 | 80m | +4 / 0 | IZ3EAX | +22 / +4 | 5 | ✓ Full exchange observed |
| 10-07 04:25 | 80m | +1 / -13 | UR5NQV | -2 / - | 2 | Partial capture |
| 10-07 04:24 | 80m | +7 / -14 | N0BUZ | -10 / - | 6 | Partial capture |
| 10-07 04:22 | 80m | +5 / -2 | SM5CBM | +6 / -5 | 5 | ✓ Full exchange observed |
| 10-07 04:20 | 80m | -2 / - | XE2X | - / -19 | 3 | ✓ Closing fragment |
| 10-07 04:19 | 80m | - / - | SV1ENG | -14 / - | 4 | Partial capture |
| 10-07 04:18 | 80m | -1 / - | UA3IDQ | - / -6 | 3 | ✓ Closing fragment |
| 10-07 04:16 | 80m | 0 / +1 | ES2AJ | +10 / - | 4 | ✓ Closing observed |
| 10-07 04:13 | 80m | +4 / -9 | F4LTX | +1 / - | 3 | Partial capture |
| 10-07 04:11 | 80m | +3 / - | GM7TUD | - / -20 | 4 | ✓ Closing fragment |
| 10-07 04:09 | 80m | - / - | F4LTX | -12 / - | 2 | Partial capture |
| 10-07 04:08 | 80m | +7 / - | PA3DUU | -1 / 0 | 4 | ✓ Closing observed |
| 10-07 04:07 | 80m | +2 / +9 | DO2ZZ | -1 / - | 5 | Partial capture |
| 10-07 04:06 | 80m | -2 / - | LY1DY | +1 / -7 | 3 | ✓ Closing observed |
| 10-07 04:03 | 80m | -1 / +7 | DF9JL | -9 / - | 3 | ✓ Closing observed |
| 10-07 04:01 | 80m | +5 / -8 | YO8RAW | +8 / -2 | 3 | ✓ Full exchange observed |
| 10-07 03:57 | 80m | - / -2 | SV1ENG | -7 / - | 2 | Partial capture |
| 10-07 03:55 | 80m | +6 / -12 | ES2AJ | +2 / - | 3 | Partial capture |
| 10-07 03:53 | 80m | +3 / -1 | SP7IIT | +4 / - | 3 | Partial capture |
| 10-07 03:51 | 80m | +5 / -12 | SV1QEZ | -10 / -5 | 5 | ✓ Full exchange observed |
| 10-07 03:49 | 80m | +2 / - | YO8XFU | - / -16 | 4 | ✓ Closing fragment |
| 10-07 03:48 | 80m | 0 / -9 | RX3MX | -6 / - | 2 | Partial capture |
| 10-07 03:46 | 80m | +1 / -11 | UR4LRG | +2 / -3 | 5 | ✓ Full exchange observed |
| 10-07 03:46 | 80m | +3 / -13 | KP2B | -20 / - | 3 | Partial capture |
| 10-07 03:45 | 80m | - / - | DL2GKW | -7 / - | 5 | Partial capture |
| 10-07 03:45 | 80m | - / - | LY1DY | -4 / - | 2 | Partial capture |
| 10-07 03:44 | 80m | -1 / -5 | DM5CF | +1 / -11 | 6 | ✓ Full exchange observed |
| 10-07 03:42 | 80m | +6 / - | RU4I | - / -17 | 3 | ✓ Closing fragment |
| 10-07 03:40 | 80m | +7 / - | DF6WE | -3 / -3 | 4 | ✓ Closing observed |
| 10-07 03:39 | 80m | - / -5 | YO8RAW | +13 / - | 2 | Partial capture |
| 10-07 03:38 | 80m | +5 / - | RD7X/QRP | - / -9 | 2 | Partial capture |
| 10-07 03:37 | 80m | - / - | LA4GHA | -2 / - | 2 | Partial capture |
| 10-07 03:36 | 80m | -1 / -5 | YO8RAW | +16 / - | 2 | Partial capture |
| 10-07 03:34 | 80m | -1 / -15 | R6SS | -6 / -8 | 5 | ✓ Full exchange observed |
| 10-07 03:31 | 80m | +5 / +4 | HA5UK | +13 / +3 | 5 | ✓ Full exchange observed |
| 10-07 03:29 | 80m | -5 / - | HB9EOT/P | - / -17 | 3 | Partial capture |
| 10-07 03:28 | 80m | -6 / -12 | IQ9SZ | -21 / -12 | 5 | ✓ Full exchange observed |
| 10-07 03:26 | 80m | 0 / -14 | RK3DSW | -18 / -16 | 4 | ✓ Full exchange observed |
| 10-07 03:24 | 80m | +6 / - | EA7KBX | - / -9 | 3 | ✓ Closing fragment |
| 10-07 03:24 | 80m | +7 / +2 | HA5UK | +8 / - | 2 | Partial capture |
| 10-07 03:20 | 80m | +2 / - | R6LE | -9 / -11 | 4 | ✓ Closing observed |
| 10-07 03:18 | 80m | +8 / -6 | M1WLK | -7 / -10 | 5 | ✓ Full exchange observed |
| 10-07 03:17 | 80m | +3 / -4 | IK8DUA | -6 / - | 3 | Partial capture |
| 10-07 03:15 | 80m | +7 / - | OK1CI | +16 / -14 | 4 | ✓ Closing observed |
| 10-07 03:14 | 80m | - / -3 | IZ2AMW | +21 / - | 8 | Partial capture |
| 10-07 03:09 | 80m | +4 / - | DM1MT | 0 / -7 | 3 | ✓ Closing observed |
| 10-07 03:07 | 80m | -2 / +7 | PA3EY | -13 / - | 4 | ✓ Closing observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 042730 -9 1703 HF1Z N0BUZ -14 042815 +5 1703 DO1ID HF1Z JO73 042830 -3 1002 HF1Z TK1CX -01 (x2) 042900 -24 1778 HF1Z SV1ENG KM18 042900 -4 1703 HA5CPN HF1Z JO73 042915 +3 1704 HF1Z HA5CPN -05 042930 +1 1703 HA5CPN HF1Z R-05 042945 -7 1704 HF1Z HA5CPN RR73 043000 +6 1703 HA5CPN HF1Z 73 043030 +5 1703 DG8DBW HF1Z JO73 043045 -11 2833 HF1Z DG8DBW -12 043100 +6 1703 DG8DBW HF1Z R-20 043115 -13 2833 HF1Z DG8DBW RR73 043130 -2 1703 DG8DBW HF1Z 73
UTC dB Audio Message 161730 -13 1624 HF1Z OE7OPJ +16 161745 -12 1831 OE7OPJ HF1Z R-04 161800 -3 1624 HF1Z OE7OPJ RR73 161815 -14 1831 OE7OPJ HF1Z 73 161845 -14 1831 DG3AWN HF1Z JO73 (x2) 161930 -14 1986 HF1Z DG3AWN +06 161945 -14 1831 DG3AWN HF1Z R+01 162000 -14 1986 HF1Z DG3AWN RR73 162015 -13 1831 DG3AWN HF1Z 73 162045 -8 1831 R3DQT HF1Z JO73 162100 +2 1428 HF1Z R3DQT -02 162115 -1 1831 R3DQT HF1Z R+01 162130 +2 1428 HF1Z R3DQT RR73 162145 -7 1831 R3DQT HF1Z 73
UTC dB Audio Message 182315 -8 1126 HF1Z EA5FDA -11 182345 -17 1536 HF1Z R1BDX KO59 182345 -3 1126 HF1Z EA5FDA -11 182430 -2 2222 HF1Z IZ4EFV -08 (x2) 182515 +1 1535 HF1Z ON4ASV -12 (x2) 182700 -18 1073 HF1Z SV2SKU R-08 182815 -12 1535 DM5CM HF1Z JO73 015945 -17 1901 HF1Z RA3M RR73 160445 -15 1835 HF1Z RA9MI -14 (x2) 160815 +1 2017 HF1Z DF3IS +02 (x2) 161230 +2 2485 HF1Z OI7AX +05
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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