SM7HZK — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving SM7HZK, decoded by SO8OO in southeastern Poland. 1,855 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 72 UTC dates in the available aggregate history. Observed between 2026-06-14 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 1,855 FT8 messages attributed to SM7HZK as the transmitting token by decoded message structure across 72 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (57%), followed by 80 m (25%) and 20 m (17%). The busiest six-hour window was 03:00-09:00 UTC, containing 39% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7.1 dB.
Overview
Bands
Last attributed message: 2026-10-12 06:33 UTC
Observed FT8 message patterns
- Attributed sample
- 1,855 messages
- Active dates
- 72 UTC dates
- Estimated median S/N
- -7.1 dB
- Estimated 10th-90th percentile
- -15 to +3 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 165, moderate (-15 to -9 dB) 639, strong (≥ -8 dB) 1,051.
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 SM7HZK 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 SM7HZK
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
- JO76 · 1,394 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 858 km (approx.)
- Last such locator decoded
- 2026-10-12 06:31 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 | SM7HZK S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-12 06:30 | 40m | -6 / +4 | LY4AB | +3 / - | 6 | ✓ Closing observed |
| 10-12 05:53 | 40m | -6 / - | EI9KF | - / 0 | 2 | Partial capture |
| 10-11 22:46 | 80m | -1 / - | M9YDD | - / - | 12 | Partial capture |
| 10-11 22:44 | 80m | +3 / - | F4MWH | - / - | 3 | Partial capture |
| 10-11 22:38 | 80m | +1 / +5 | T77RN | -2 / -12 | 6 | ✓ Full exchange observed |
| 10-11 17:48 | 40m | +7 / +1 | HB9ELE | +11 / -1 | 6 | ✓ Full exchange observed |
| 10-11 17:44 | 40m | -2 / - | OH3SW | - / - | 5 | Partial capture |
| 10-11 17:38 | 40m | -2 / - | OH8KI | - / - | 7 | Partial capture |
| 10-11 17:36 | 40m | -9 / -9 | EU6UE | -14 / - | 3 | ✓ Closing observed |
| 10-11 17:36 | 40m | -4 / -2 | M7CWF | -14 / - | 2 | Partial capture |
| 10-11 17:24 | 40m | - / - | M0IEP | -13 / - | 5 | Partial capture |
| 10-11 17:19 | 40m | - / -16 | OZ9FF | -10 / - | 12 | Partial capture |
| 10-09 23:26 | 80m | +3 / -1 | G8OCV | +2 / +6 | 5 | ✓ Full exchange observed |
| 10-09 23:24 | 80m | 0 / - | SP7OK | - / - | 4 | Partial capture |
| 10-09 23:22 | 80m | -1 / -5 | DG7OBV | -8 / -6 | 5 | ✓ Full exchange observed |
| 10-09 23:20 | 80m | +1 / -19 | SM6ONT | -18 / -7 | 6 | ✓ Full exchange observed |
| 10-09 15:31 | 40m | -2 / - | M9YDD | - / - | 2 | Partial capture |
| 10-09 12:04 | 40m | -7 / - | PD4RJ | - / - | 5 | Partial capture |
| 10-09 11:59 | 40m | -4 / - | DL7DL | -6 / - | 3 | ✓ Closing observed |
| 10-09 11:58 | 40m | -5 / - | PA1HN | - / - | 8 | Partial capture |
| 10-09 11:56 | 40m | -6 / - | M7CYY | - / -15 | 3 | Partial capture |
| 10-09 11:51 | 40m | -6 / - | DB4VI | -21 / +7 | 3 | ✓ Closing observed |
| 10-09 07:22 | 40m | -7 / - | KZ7Y | - / - | 9 | Partial capture |
| 10-08 07:11 | 40m | -14 / 0 | IN3IBW | +5 / -1 | 2 | Partial capture |
| 10-08 07:09 | 40m | -14 / - | AM5CV | - / - | 2 | Partial capture |
| 10-08 06:59 | 40m | -10 / -10 | OE1TKS | +4 / - | 3 | ✓ Closing observed |
| 10-08 06:53 | 40m | -13 / - | F1DXP | 0 / -16 | 3 | ✓ Closing observed |
| 10-07 22:18 | 40m | - / -2 | EA8UP | -6 / - | 7 | Partial capture |
| 10-07 22:00 | 80m | -6 / - | ON4MAP | -10 / -7 | 6 | ✓ Closing observed |
| 10-07 21:59 | 80m | +1 / +7 | DO5UH/P | +9 / - | 5 | ✓ Closing observed |
| 10-07 21:54 | 80m | -2 / - | LB9ZG | - / -3 | 4 | ✓ Closing fragment |
| 10-07 21:51 | 80m | -4 / - | OR80AF | - / - | 2 | Partial capture |
| 10-07 21:50 | 80m | -1 / - | R1BLO/P | - / - | 4 | Partial capture |
| 10-07 21:47 | 80m | -5 / - | IQ8DO | - / - | 5 | Partial capture |
| 10-07 21:45 | 80m | -2 / - | DA6OOM | -10 / - | 4 | ✓ Closing observed |
| 10-07 21:42 | 80m | -4 / - | ON7PR | - / - | 3 | ✓ Closing fragment |
| 10-07 21:40 | 80m | -1 / - | SP4BB | - / - | 2 | Partial capture |
| 10-07 16:12 | 40m | -6 / - | A60WSW/5 | - / - | 4 | Partial capture |
| 10-07 16:10 | 40m | -8 / - | ON2VHF/P | - / - | 3 | Partial capture |
| 10-07 16:06 | 40m | -2 / -2 | DF0NN | -14 / -3 | 9 | ✓ Full exchange observed |
| 10-07 16:04 | 40m | -4 / - | UR3VBM | - / -15 | 5 | Partial capture |
| 10-07 15:57 | 40m | -8 / -8 | G6PWS | -9 / -12 | 4 | ✓ Full exchange observed |
| 10-07 15:05 | 40m | -12 / - | DA125RH | - / - | 10 | Partial capture |
| 10-07 15:02 | 40m | -12 / 0 | G0ORH | -7 / +5 | 6 | ✓ Full exchange observed |
| 10-07 14:59 | 40m | -10 / - | M9FUE | - / -2 | 4 | ✓ Closing fragment |
| 10-07 14:55 | 40m | -13 / - | OH2CGU/P | - / -4 | 2 | Partial capture |
| 10-07 14:53 | 40m | -11 / - | PA4AGO | -17 / -5 | 4 | ✓ Closing observed |
| 10-07 14:50 | 40m | -11 / 0 | M9DNC | -7 / -11 | 4 | ✓ Full exchange observed |
| 10-07 14:48 | 40m | -9 / - | YD4AWV | - / - | 4 | Partial capture |
| 10-07 14:44 | 40m | -6 / - | OH2CGU/P | - / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 174845 +12 796 SM7HZK HB9ELE JN47 174900 +9 2908 HB9ELE SM7HZK -01 174915 +11 796 SM7HZK HB9ELE R+01 174930 +5 2908 HB9ELE SM7HZK RR73 174945 +9 796 SM7HZK HB9ELE 73 223530 -2 1215 SM7HZK AO70URV -04 055315 -8 2885 EI9KF SM7HZK R+00 (x2) 063015 -3 2777 LY4AB SM7HZK JO76 (x3) 063130 +3 887 SM7HZK LY4AB +04 (x2) 063215 -8 2777 LY4AB SM7HZK 73 063345 -9 2777 GM0MST SM7HZK 73
UTC dB Audio Message 224430 +2 2620 F4MWH SM7HZK JO76 (x3) 224600 +3 2620 M9YDD SM7HZK JO76 (x12)
UTC dB Audio Message 083015 -11 2651 OM6AI SM7HZK JO76 083515 -9 2651 GW4ONI SM7HZK JO76 102230 +11 1099 SM7HZK OR5T -06 (x2) 222115 -10 2400 SM7HZK OK2CNI -04 (x2) 070915 -16 1978 SM7HZK EG1PPE RR73 160130 +1 2778 <...> SM7HZK JO76 (x4) 160345 -3 1689 SM7HZK <...> -09 160415 -1 1673 SM7HZK IT9SVJ JM68 (x3)
UTC dB Audio Message 100230 -7 2604 SM7HZK RY6O KN87 (x4) 145115 -19 2363 MW3FLI SM7HZK JO76 084430 -5 997 SM7HZK IK4IDF JN54 (x3) 085045 -9 961 SM7HZK F5ADE -02 (x2) 101445 -15 2365 <...> SM7HZK JO76 101915 +2 2733 SM7HZK F1PBZ -15 (x3) 101445 -8 499 SM7HZK SV9/PD9VOG -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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