HF9D — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving HF9D, decoded by SO8OO in southeastern Poland. 806 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, across 31 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-10-12.
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 806 FT8 messages attributed to HF9D as the transmitting token by decoded message structure across 31 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (79%), followed by 60 m (17%) and 40 m (3%). Most decodes (77%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (84%); the estimated median was +7.1 dB.
Overview
Bands
Last attributed message: 2026-10-12 05:56 UTC
Observed FT8 message patterns
- Attributed sample
- 806 messages
- Active dates
- 31 UTC dates
- Estimated median S/N
- +7.1 dB
- Estimated 10th-90th percentile
- -13 to +17 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 52, moderate (-15 to -9 dB) 73, strong (≥ -8 dB) 681.
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 HF9D 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 HF9D
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
- JO90 · 460 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 208 km (approx.)
- Last such locator decoded
- 2026-10-12 05:56 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 | HF9D S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-12 05:54 | 60m | -16 / - | M0DSK | - / - | 5 | Partial capture |
| 10-12 05:42 | 80m | +6 / - | OE6/HB9DGR | - / - | 4 | Partial capture |
| 10-12 05:35 | 80m | +14 / - | 9A5TW | - / - | 2 | Partial capture |
| 10-12 05:30 | 80m | +1 / - | F4NGK | - / - | 3 | Partial capture |
| 10-12 05:27 | 80m | -3 / -24 | EA4GOY | -4 / -13 | 9 | ✓ Full exchange observed |
| 10-12 05:25 | 80m | +7 / -3 | GW0KRL | -6 / -12 | 5 | ✓ Full exchange observed |
| 10-12 05:16 | 80m | 0 / -10 | DO1ID | +10 / +4 | 4 | ✓ Full exchange observed |
| 10-12 05:15 | 80m | +6 / -12 | GM6URC | -16 / -15 | 5 | ✓ Full exchange observed |
| 10-12 05:10 | 80m | +4 / -6 | F4ELU | -6 / -7 | 7 | ✓ Full exchange observed |
| 10-12 05:07 | 80m | +6 / -13 | HB9HRR | -13 / -18 | 6 | ✓ Full exchange observed |
| 10-12 05:05 | 80m | +6 / -10 | OZ6MM | -15 / -23 | 7 | ✓ Full exchange observed |
| 10-12 05:03 | 80m | +9 / +5 | T77RN | -11 / -10 | 6 | ✓ Full exchange observed |
| 10-12 05:00 | 80m | +1 / -5 | SQ9EJ | -2 / -12 | 5 | ✓ Full exchange observed |
| 10-12 04:59 | 80m | +2 / -3 | ON3ANY | +3 / +2 | 5 | ✓ Full exchange observed |
| 10-12 04:56 | 80m | - / - | IK8OAM | -12 / - | 2 | ✓ Closing fragment |
| 10-12 04:55 | 80m | -3 / -14 | PC1K | -16 / -20 | 4 | ✓ Full exchange observed |
| 10-11 18:38 | 80m | - / - | RA4Y | -6 / - | 4 | Partial capture |
| 10-11 05:55 | 80m | +9 / - | F4LRA | - / -12 | 5 | ✓ Closing fragment |
| 10-11 05:54 | 80m | +10 / -13 | PA5KK | -13 / -18 | 6 | ✓ Full exchange observed |
| 10-11 05:52 | 80m | +15 / - | ON4MDW | - / -8 | 4 | ✓ Closing fragment |
| 10-11 05:49 | 80m | +20 / - | ON1WFF | - / - | 4 | Partial capture |
| 10-11 05:48 | 80m | +23 / -14 | OZ1KZX | -11 / -13 | 5 | ✓ Full exchange observed |
| 10-11 05:46 | 80m | - / -11 | IQ9SZ/2 | -6 / - | 2 | Partial capture |
| 10-11 05:46 | 80m | +16 / - | <...> | - / -9 | 3 | Partial capture |
| 10-10 18:26 | 60m | - / -17 | DF3VG | -11 / - | 4 | ✓ Closing fragment |
| 10-10 18:23 | 60m | - / -11 | SP4HXV | -14 / - | 4 | ✓ Closing fragment |
| 10-10 18:23 | 60m | - / -9 | PE1MHY | -6 / - | 2 | ✓ Closing fragment |
| 10-10 18:21 | 60m | - / -19 | OK1BN | +4 / - | 3 | ✓ Closing fragment |
| 10-10 17:38 | 60m | -19 / -7 | 4O/DL1FDH | -3 / - | 2 | Partial capture |
| 10-10 17:36 | 60m | - / -17 | 9K2GR | -8 / - | 2 | ✓ Closing fragment |
| 10-09 14:32 | 10m | - / +10 | CT7AUT | -6 / - | 2 | ✓ Closing fragment |
| 10-09 14:24 | 10m | - / - | CS7BPG | -24 / - | 2 | ✓ Closing fragment |
| 10-09 14:23 | 10m | - / 0 | CR7BRV | +2 / - | 2 | ✓ Closing fragment |
| 10-08 17:44 | 80m | -2 / -4 | YO3AI | -6 / - | 5 | Partial capture |
| 10-08 17:33 | 80m | - / - | RX3DRC | -16 / - | 2 | Partial capture |
| 10-08 17:32 | 80m | +6 / +1 | DL6EL | 0 / - | 3 | ✓ Closing observed |
| 10-08 17:31 | 80m | +8 / - | ON8LX | - / -12 | 3 | ✓ Closing fragment |
| 10-08 17:27 | 80m | +2 / - | LB7NK | - / - | 5 | Partial capture |
| 10-08 16:37 | 80m | - / - | YO4BXX | +1 / - | 5 | Partial capture |
| 10-08 16:36 | 80m | - / - | RK6OQ | -2 / - | 2 | Partial capture |
| 10-08 16:34 | 80m | +13 / -15 | SM5KNV | +7 / -6 | 7 | ✓ Full exchange observed |
| 10-07 18:38 | 80m | +20 / - | SQ5ANT | +6 / +6 | 7 | ✓ Full exchange observed |
| 10-07 18:19 | 80m | +14 / - | HA5NX | -2 / +8 | 3 | ✓ Closing observed |
| 10-07 18:16 | 80m | +17 / -7 | M0MLS | -4 / -13 | 5 | ✓ Full exchange observed |
| 10-07 18:15 | 80m | - / -3 | UA3SCU | -6 / - | 2 | Partial capture |
| 10-07 18:14 | 80m | +12 / +1 | YT2ZE | -4 / -2 | 5 | ✓ Full exchange observed |
| 10-07 18:12 | 80m | +19 / - | SM4ONW | - / -7 | 3 | ✓ Closing fragment |
| 10-07 17:58 | 80m | +4 / -16 | OE5ABL | -9 / +3 | 4 | ✓ Full exchange observed |
| 10-07 17:55 | 80m | +7 / - | 9A7KWS | - / - | 3 | ✓ Closing fragment |
| 10-07 17:51 | 80m | +1 / -17 | HB3YPJ | -7 / -11 | 7 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 182315 -8 879 HF9D PE1MHY -09 182345 -13 1263 HF9D SP4HXV -11 182345 -5 879 HF9D PE1MHY RR73 182415 -13 1263 HF9D SP4HXV -25 (x3) 182645 -12 1785 HF9D DF3VG JN48 (x4) 055445 -18 882 M0DSK HF9D JO90 (x5)
UTC dB Audio Message 052845 -5 1155 EA4GOY HF9D R-13 052900 -3 1156 HF9D EA4GOY RR73 052915 -5 1155 EA4GOY HF9D R-13 052930 -4 1155 HF9D EA4GOY RR73 052945 -3 1155 EA4GOY HF9D 73 053045 -5 2107 F4NGK HF9D JO90 (x3) 053515 +14 927 9A5TW HF9D JO90 (x2) 053630 +10 928 F4NGK HF9D JO90 054230 +3 1292 OE6/HB9DGR HF9D JO90 (x4)
UTC dB Audio Message 182845 -13 1027 HF9D IS0BPX +01 (x2) 144315 -4 1253 HF9D G8OO JO02 (x3) 132330 -3 2809 HF9D <...> -05 143345 +3 950 HF9D SV7BAY +18 (x2) 142330 +2 782 HF9D CR7BRV +00 (x2) 142430 -24 1565 HF9D CS7BPG IN51 (x2) 143215 -5 1505 HF9D CT7AUT +10 (x2)
UTC dB Audio Message 065915 -10 2519 GB0SL HF9D R-17 (x2) 070100 -9 2519 ON4DN HF9D JO90 070115 -8 333 HF9D ON4DN -16 070130 -9 2519 ON4DN HF9D R-13 (x2) 071115 -14 2519 PD5URK HF9D JO90 (x2) 175330 -7 1224 <...> HF9D JO90 175445 +4 1606 HF9D OE/DG7CF -11 (x2) 175630 -7 2263 JG3LGD HF9D JO90 175700 -4 2263 JH1CTV HF9D JO90 082700 -20 2119 HF9D DL7PIA +08 083200 -3 888 HF9D IN3IBW RR73
UTC dB Audio Message 181145 -11 1112 CQ HF9D JO90 (x4)
UTC dB Audio Message 152630 +9 2665 HF9D 9A170NT +13 133430 -11 1646 HF9D DB1BAC/P +06 114230 -8 953 HF9D M9ORB 73 114615 -15 1078 HF9D M0PEI -03 (x2) 110300 -13 1085 HF9D M9LCB -01 (x2) 110400 -3 2321 HF9D F5MOO JN07 110430 -21 1818 HF9D R2WT +00 110430 -2 2321 HF9D F5MOO JN07 110900 +13 528 HF9D M9YLR RR73 111000 +6 2417 HF9D F5MOO JN07 (x3) 113600 -19 1544 HF9D G4YTW -14
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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