SM7TZK — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving SM7TZK, decoded by SO8OO in southeastern Poland. 15,091 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 60 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-10-22.
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 15,091 FT8 messages attributed to SM7TZK as the transmitting token by decoded message structure across 60 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (86%), followed by 40 m (13%) and 20 m (1%). Most decodes (68%) fell within the six-hour window 22:00-04:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (86%); the estimated median was 0 dB.
Overview
Bands
Last attributed message: 2026-10-22 18:12 UTC
Observed FT8 message patterns
- Attributed sample
- 15,091 messages
- Active dates
- 60 UTC dates
- Estimated median S/N
- 0 dB
- Estimated 10th-90th percentile
- -10.4 to +8 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 551, moderate (-15 to -9 dB) 1,602, strong (≥ -8 dB) 12,938.
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 SM7TZK 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 SM7TZK
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
- JO75 · 11,677 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 769 km (approx.)
- Last such locator decoded
- 2026-10-22 18:12 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 | SM7TZK S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-22 18:10 | 80m | +2 / -14 | RW4HB | -18 / -20 | 3 | ✓ Full exchange observed |
| 10-22 03:59 | 80m | -2 / - | RX3MX | -6 / - | 2 | ✓ Closing observed |
| 10-22 02:28 | 80m | +8 / +4 | DL1MC | +18 / +4 | 6 | ✓ Full exchange observed |
| 10-22 02:26 | 80m | +12 / -9 | RU3KA | +3 / -14 | 4 | ✓ Full exchange observed |
| 10-22 02:23 | 80m | +6 / +5 | HA1TAB | +13 / -7 | 9 | ✓ Full exchange observed |
| 10-22 02:23 | 80m | +9 / +1 | OH5KNL | +22 / -6 | 6 | ✓ Full exchange observed |
| 10-22 02:20 | 80m | +10 / - | RA3TSK | 0 / -6 | 4 | Partial capture |
| 10-22 02:11 | 80m | +7 / - | RA6Z | -5 / -11 | 4 | ✓ Closing observed |
| 10-22 02:10 | 80m | - / - | DL2AMD | +7 / - | 2 | Partial capture |
| 10-22 02:02 | 80m | - / - | K2ZC | -13 / - | 2 | Partial capture |
| 10-22 01:52 | 80m | +5 / - | RZ9WA | - / -16 | 3 | ✓ Closing fragment |
| 10-22 01:43 | 80m | - / -15 | WF2A | 0 / - | 4 | Partial capture |
| 10-22 01:39 | 80m | +17 / -7 | RA4CCL | +7 / -6 | 6 | ✓ Full exchange observed |
| 10-22 01:28 | 60m | - / - | F1IQH | 0 / - | 3 | Partial capture |
| 10-22 01:16 | 80m | +16 / +1 | WF2A | +9 / -14 | 6 | ✓ Full exchange observed |
| 10-22 00:57 | 80m | +4 / +7 | UT0UO | +14 / - | 5 | ✓ Closing observed |
| 10-22 00:36 | 80m | +2 / - | DK5OPA | -7 / -6 | 10 | ✓ Full exchange observed |
| 10-21 23:28 | 80m | +4 / -12 | R2RCQ | -2 / -10 | 6 | ✓ Full exchange observed |
| 10-21 23:09 | 80m | +7 / +3 | EA2A | +6 / -2 | 6 | ✓ Full exchange observed |
| 10-21 23:05 | 80m | +9 / 0 | EA7L | -12 / -25 | 6 | ✓ Full exchange observed |
| 10-21 22:55 | 80m | +8 / -17 | KC1GN | -4 / -15 | 5 | ✓ Full exchange observed |
| 10-21 22:50 | 80m | +11 / +1 | M7BSI | -7 / -16 | 6 | ✓ Full exchange observed |
| 10-21 22:44 | 80m | -3 / -8 | EA2DYB | +2 / -7 | 4 | ✓ Full exchange observed |
| 10-21 22:41 | 80m | +2 / +9 | F4MZI | -10 / -12 | 2 | Partial capture |
| 10-21 22:11 | 80m | +3 / +3 | SP9HPI | +12 / +4 | 6 | ✓ Full exchange observed |
| 10-21 21:55 | 80m | +4 / -2 | TA1MB | -7 / -13 | 6 | ✓ Full exchange observed |
| 10-21 21:43 | 80m | +6 / - | F4NJU | -15 / -25 | 5 | ✓ Closing observed |
| 10-21 21:40 | 80m | +7 / -9 | DO9POL | -4 / -12 | 6 | ✓ Full exchange observed |
| 10-21 21:37 | 80m | +8 / -9 | SQ8NGO | -1 / - | 5 | ✓ Closing observed |
| 10-21 21:33 | 80m | +7 / -15 | IZ1AJJ | -1 / -14 | 7 | ✓ Full exchange observed |
| 10-21 21:33 | 80m | +7 / -1 | SQ9RIM | +14 / +1 | 8 | ✓ Full exchange observed |
| 10-21 21:31 | 80m | +4 / - | OK9DMR | - / -15 | 3 | Partial capture |
| 10-21 21:30 | 80m | - / - | S56ZIV | -5 / - | 3 | Partial capture |
| 10-21 21:29 | 80m | +2 / - | IZ1HJU | -15 / -20 | 4 | Partial capture |
| 10-21 21:23 | 80m | +4 / -12 | G4XWR | -19 / -16 | 3 | Partial capture |
| 10-21 21:08 | 80m | 0 / -5 | IZ5ILK | +1 / - | 4 | ✓ Closing observed |
| 10-21 21:05 | 80m | - / -9 | PH0DV | -19 / - | 4 | ✓ Closing fragment |
| 10-21 21:00 | 80m | -2 / - | OE1DGW | 0 / -7 | 4 | Partial capture |
| 10-21 20:58 | 80m | +13 / -10 | F1VEO | -7 / -10 | 6 | ✓ Full exchange observed |
| 10-21 20:45 | 80m | +6 / -12 | F5JAE | -12 / -19 | 4 | ✓ Full exchange observed |
| 10-21 20:43 | 80m | +9 / - | G8JYV | -8 / -18 | 2 | Partial capture |
| 10-21 20:31 | 80m | +2 / +2 | DL1DV | +9 / -4 | 6 | ✓ Full exchange observed |
| 10-21 20:28 | 80m | - / - | IU7VOL | +8 / - | 2 | Partial capture |
| 10-21 20:28 | 80m | +6 / - | PH7GD | - / -19 | 2 | ✓ Closing fragment |
| 10-21 20:23 | 80m | +12 / +9 | SP2HJN | +6 / 0 | 4 | ✓ Full exchange observed |
| 10-21 20:19 | 80m | +1 / -13 | HA7XL | +12 / 0 | 6 | ✓ Full exchange observed |
| 10-21 20:15 | 80m | -6 / +3 | ON4MAP | -4 / -12 | 6 | ✓ Full exchange observed |
| 10-21 20:08 | 80m | -4 / -5 | SP1BMK | -2 / -2 | 9 | ✓ Full exchange observed |
| 10-21 20:08 | 80m | -5 / - | DO3LMB | - / -13 | 3 | ✓ Closing fragment |
| 10-21 20:03 | 80m | +3 / -1 | UR5EDX | +11 / -1 | 8 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 023030 +3 1568 CQ SM7TZK JO75 (x2) 024900 -24 1974 RA3TSK SM7TZK RR73 035930 -2 1144 RX3MX SM7TZK RR73 035945 -6 1144 SM7TZK RX3MX 73 180730 +1 1506 CQ SM7TZK JO75 (x5) 181000 +2 697 RW4HB SM7TZK -20 181015 -18 698 SM7TZK RW4HB R-14 181030 +1 697 RW4HB SM7TZK RR73 181130 +6 697 CQ SM7TZK JO75 (x2)
UTC dB Audio Message 233245 -15 822 SM7TZK PA0LAN JO21 222215 -19 2080 SM7TZK EA3FN JN11 012815 -1 493 SM7TZK F1IQH JN27 (x3)
UTC dB Audio Message 234345 -9 1787 SM7TZK LA9JKA JP32 (x6) 001945 -20 1786 SM7TZK G4UJS -17 (x5) 024745 -14 1596 SM7TZK SP3HDU JO71 (x4)
UTC dB Audio Message 101945 -22 1595 SM7TZK CR7CDR IM58 102345 -16 1187 SM7TZK EA4EQ IN80 (x3) 103615 -13 1524 SM7TZK EA5IL IM99 (x3)
UTC dB Audio Message 030215 -9 659 SM7TZK A99AA R-14 (x3) 034645 -3 2904 SM7TZK 4X5CG KM71 (x3) 042100 -11 1900 SM7TZK UA3SAO -14 042100 -12 2184 SM7TZK RQ7R -17 (x2) 042900 +7 2271 SM7TZK RW3YS -04 (x2) 043545 -11 1593 SM7TZK IK0WCL RRR (x2) 043645 +1 2246 SM7TZK R3LCG -02 (x2)
UTC dB Audio Message 065245 -24 2470 SM7TZK EA3HRE 73 065345 +14 2470 SM7TZK F4PCM JN23 (x3) 065645 -17 1546 SM7TZK RC3DN R-04 (x2) 065915 -5 1541 SM7TZK UA3DCG KO95 070215 -4 1055 SM7TZK F1IQH JN27 (x4) 070515 -4 3037 SM7TZK IW5ALZ JN53 160300 -9 1367 CQ SM7TZK JO75 (x2) 160545 -11 2072 SM7TZK R8LCA MO27
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.
CW
No CW receptions recorded for this callsign in the last 30 days.
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