HF5A — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving HF5A, decoded by SO8OO in southeastern Poland. 5,478 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 93 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-08.
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 5,478 FT8 messages attributed to HF5A as the transmitting token by decoded message structure across 93 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (53%), followed by 40 m (17%) and 60 m (16%). Most decodes (70%) 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 (89%); the estimated median was +4.2 dB.
Overview
Bands
Last attributed message: 2026-09-08 20:38 UTC
Observed FT8 message patterns
- Attributed sample
- 5,478 messages
- Active dates
- 93 UTC dates
- Estimated median S/N
- +4.2 dB
- Estimated 10th-90th percentile
- -9 to +13.6 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 95, moderate (-15 to -9 dB) 487, strong (≥ -8 dB) 4,896.
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 HF5A 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 HF5A
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
- JO92 · 3,234 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 345 km (approx.)
- Last such locator decoded
- 2026-09-08 20:37 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 | HF5A S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-08 20:36 | 160m | - / -16 | R2EA | +2 / - | 2 | Partial capture |
| 09-08 20:35 | 160m | -13 / -22 | DK100LH | -10 / +2 | 3 | Partial capture |
| 09-08 20:34 | 160m | -12 / - | SN100PKP | - / -11 | 2 | Partial capture |
| 09-08 20:18 | 160m | -3 / -18 | EI9JF | -14 / -17 | 13 | Partial capture |
| 09-08 20:16 | 160m | +2 / -9 | SN100PKP | -10 / -8 | 3 | Partial capture |
| 09-08 20:08 | 160m | -6 / - | DJ3JD | - / -9 | 6 | Partial capture |
| 09-08 20:02 | 160m | - / - | DJ3JD | -14 / - | 2 | Partial capture |
| 09-08 19:59 | 160m | -5 / - | SN100PKP | - / -17 | 5 | Partial capture |
| 09-08 19:46 | 160m | 0 / -6 | OE3PBS | -20 / -12 | 4 | ✓ Full exchange observed |
| 09-08 19:41 | 160m | - / -18 | UD8S | -17 / - | 4 | Partial capture |
| 09-08 19:40 | 160m | -2 / -19 | SQ2HEB | -8 / 0 | 5 | ✓ Full exchange observed |
| 09-08 19:35 | 80m | +12 / -8 | DO8OS | -10 / -18 | 5 | Partial capture |
| 09-08 19:34 | 80m | +8 / - | DO1ZTR | - / - | 3 | Partial capture |
| 09-08 19:31 | 80m | +15 / - | SM3WFR | - / - | 3 | Partial capture |
| 09-08 19:26 | 60m | +9 / - | OE8DDX | - / - | 6 | Partial capture |
| 09-08 19:16 | 60m | +10 / - | ON4MDW | - / -10 | 3 | ✓ Closing fragment |
| 09-08 19:14 | 60m | +7 / +7 | OH3JF | +2 / 0 | 5 | ✓ Full exchange observed |
| 09-08 07:39 | 40m | - / +8 | PD1RGW | -12 / - | 2 | ✓ Closing fragment |
| 09-08 07:35 | 40m | - / - | YO2UKG | -2 / - | 2 | ✓ Closing fragment |
| 09-08 01:17 | 80m | +12 / - | KE4EB | - / - | 5 | Partial capture |
| 09-08 01:12 | 80m | +14 / - | UN7CL | - / -19 | 4 | ✓ Closing fragment |
| 09-08 00:52 | 80m | +10 / - | 5Z4VJ | - / -23 | 20 | Partial capture |
| 09-08 00:39 | 80m | +13 / -7 | 9A2TN | +10 / -13 | 5 | ✓ Full exchange observed |
| 09-08 00:36 | 80m | +19 / +1 | S56EPX | -2 / -10 | 5 | ✓ Full exchange observed |
| 09-08 00:35 | 80m | +21 / - | DL3RL | +12 / +3 | 5 | ✓ Full exchange observed |
| 09-08 00:32 | 80m | +16 / - | K1ZZ | - / - | 3 | Partial capture |
| 09-08 00:29 | 80m | +18 / -7 | GX4RAF/P | -13 / -20 | 4 | ✓ Full exchange observed |
| 09-08 00:25 | 80m | - / -4 | ON1JP | -10 / - | 2 | Partial capture |
| 09-08 00:24 | 80m | +8 / -9 | LZ7VV | +16 / - | 3 | ✓ Closing observed |
| 09-08 00:19 | 80m | -4 / - | LZ7VV | - / - | 2 | Partial capture |
| 09-08 00:14 | 80m | +4 / -5 | S57WO | -13 / -19 | 5 | ✓ Full exchange observed |
| 09-08 00:09 | 80m | +18 / -8 | DL3HN | -4 / -12 | 4 | ✓ Full exchange observed |
| 09-07 23:49 | 80m | +19 / - | DM3AWE | - / - | 2 | Partial capture |
| 09-07 23:48 | 80m | - / - | RC6OU | +8 / - | 2 | Partial capture |
| 09-07 23:45 | 80m | +9 / - | ON5WR | - / - | 4 | Partial capture |
| 09-07 21:56 | 160m | 0 / -5 | LA3DV | -10 / -10 | 5 | ✓ Full exchange observed |
| 09-07 21:52 | 160m | - / -11 | R2EA | +11 / - | 2 | Partial capture |
| 09-07 21:52 | 160m | - / - | UA4FKT | +12 / - | 3 | Partial capture |
| 09-07 21:50 | 160m | +8 / -18 | GI4DOH | -10 / -9 | 7 | ✓ Full exchange observed |
| 09-07 21:48 | 160m | +9 / - | Z31PM | - / - | 5 | Partial capture |
| 09-07 21:44 | 80m | +16 / -6 | M0KHR | -14 / -16 | 5 | ✓ Full exchange observed |
| 09-07 21:40 | 80m | +5 / -14 | HB3XGP | +2 / -4 | 5 | ✓ Full exchange observed |
| 09-07 21:37 | 80m | +6 / - | 5Z4VJ | - / - | 5 | Partial capture |
| 09-07 21:33 | 80m | +8 / -6 | YO3HUI | +12 / -16 | 8 | ✓ Full exchange observed |
| 09-07 21:16 | 80m | +4 / - | 5Z4VJ | - / - | 21 | Partial capture |
| 09-07 21:09 | 80m | -4 / -6 | DO3LZ | +2 / - | 4 | ✓ Closing observed |
| 09-07 21:05 | 80m | -5 / - | R1943OD | - / - | 3 | Partial capture |
| 09-07 21:01 | 80m | -1 / - | M7JTK | -11 / -26 | 6 | ✓ Closing observed |
| 09-07 20:58 | 80m | 0 / -10 | EG1PDA | -10 / -19 | 5 | ✓ Full exchange observed |
| 09-07 20:50 | 80m | -10 / -7 | LB5WB | +3 / -6 | 5 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 202315 -4 1195 EI9JF HF5A R-17 (x4) 202730 -24 1195 HF5A EI9JF RR73 203445 -13 2487 SN100PKP HF5A JO92 203500 -10 1142 HF5A DK100LH -22 203515 -12 2487 SN100PKP HF5A R-11 203600 +2 2358 HF5A R2EA -16 (x2) 203645 -13 2487 DK100LH HF5A JO92 203745 -11 2487 IZ7NLJ HF5A JO92 203800 +8 1358 HF5A HF100PKP +00 203815 -13 2487 DK100LH HF5A R+02 203900 +5 2358 HF5A R2EA -11
UTC dB Audio Message 011830 +12 2764 KE4EB HF5A JO92 (x3) 193145 +15 2649 SM3WFR HF5A JO92 (x3) 193330 +9 2664 DL2MED HF5A JO92 193400 +1 2318 DO1ZTR HF5A JO92 (x3) 193545 +14 2638 DO8OS HF5A JO92 (x3) 193700 -10 580 HF5A DO8OS -08 193715 +12 2638 DO8OS HF5A R-18
UTC dB Audio Message 233345 -15 997 HF5A K4KEW -09 191430 +5 2398 OH3JF HF5A JO92 191445 +0 2012 HF5A OH3JF +07 191500 +8 2398 OH3JF HF5A R+00 191515 +3 2012 HF5A OH3JF RR73 191530 +9 2398 OH3JF HF5A 73 191600 +7 2612 ON4MDW HF5A JO92 (x3) 192645 +8 2612 OE8DDX HF5A JO92 (x6)
UTC dB Audio Message 190045 +0 2675 OR1A HF5A R-19 (x2) 190400 -3 2675 IK0NGL HF5A JO92 (x3) 190630 -11 2642 DM7ZZ HF5A JO92 (x2) 232645 -13 1988 HF5A SV8SXD -02 073515 -4 864 HF5A YO2UKG +14 (x2) 073730 -12 1828 HF5A OZ/KD0NDU -05 073915 -11 483 HF5A PD1RGW +08 (x2) 191300 +6 2688 HF5A 9A170NT +08 191315 -17 277 OZ/HB9TYU HF5A R-08
UTC dB Audio Message 141345 -4 2740 HF5A LX1JX RR73 (x2) 145330 -4 521 HF5A R6DWD -08 (x3) 152400 -18 1854 HF5A DN9PMH +06 110615 -8 666 HF5A CR7BRV -16 (x2) 111415 -19 1595 HF5A CT7AXN -05 082800 -18 2260 HF5A VK6DW -05 (x2) 085745 -10 892 HF5A IT9IVN -21 (x4)
UTC dB Audio Message 163730 -7 304 HF5A PD0PEM -10 (x2) 041815 -3 1074 HF5A RK4H LO53 163130 -13 1738 HF5A M7CWF RR73 (x2) 163330 -5 2549 HF5A M9LCB +08 (x2) 163530 +13 2732 HF5A UA4FEN +14 163830 +6 558 HF5A F5SJC 73 163830 -4 2033 HF5A G3ZSU +13 (x2) 163930 +10 2732 HF5A UA4FEN +01 164415 +6 2867 HF5A DL2IAN +12 (x3)
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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