Z335MK — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving Z335MK, decoded by SO8OO in southeastern Poland. 923 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, across 15 UTC dates in the available aggregate history. Observed between 2026-09-01 and 2026-09-15.
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 923 FT8 messages attributed to Z335MK as the transmitting token by decoded message structure across 15 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (68%), followed by 40 m (31%) and 60 m (1%). Most decodes (87%) 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 (63%); the estimated median was -4.3 dB.
Overview
Bands
Last attributed message: 2026-09-15 20:50 UTC
Observed FT8 message patterns
- Attributed sample
- 923 messages
- Active dates
- 15 UTC dates
- Estimated median S/N
- -4.3 dB
- Estimated 10th-90th percentile
- -17.1 to +5 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 135, moderate (-15 to -9 dB) 205, strong (≥ -8 dB) 583.
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 Z335MK 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.
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 | Z335MK S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-15 20:49 | 80m | +5 / - | SV8/F6BLP | - / - | 2 | ✓ Closing fragment |
| 09-15 20:37 | 80m | -1 / - | SV8/F6BLP | +8 / - | 7 | ✓ Closing observed |
| 09-15 20:00 | 80m | -6 / - | EM90ZMV | +24 / - | 4 | ✓ Closing observed |
| 09-15 19:56 | 80m | - / - | UA9JTJ/9 | +4 / - | 2 | ✓ Closing fragment |
| 09-15 19:56 | 80m | +2 / - | EM90ZMV | - / - | 2 | ✓ Closing fragment |
| 09-15 19:30 | 80m | - / - | UF6V/UA5D | 0 / - | 2 | ✓ Closing fragment |
| 09-15 18:51 | 40m | -16 / - | WD0U/DU3 | - / - | 2 | ✓ Closing fragment |
| 09-15 06:30 | 40m | - / - | YU65AEC | -2 / - | 3 | ✓ Closing fragment |
| 09-15 05:26 | 40m | -14 / - | R1QF/P | - / - | 2 | ✓ Closing fragment |
| 09-15 04:17 | 40m | -12 / - | R1QF/P | - / - | 2 | ✓ Closing fragment |
| 09-15 04:07 | 40m | -10 / - | R1QF/P | -8 / - | 3 | ✓ Closing observed |
| 09-14 21:41 | 80m | +2 / - | II7IAME | +12 / - | 5 | ✓ Closing observed |
| 09-14 21:36 | 80m | -3 / - | EK/RX3DPK | - / - | 3 | ✓ Closing fragment |
| 09-14 21:31 | 80m | +3 / - | EK/RX3DPK | - / - | 3 | ✓ Closing fragment |
| 09-14 21:27 | 80m | +10 / - | EK/RX3DPK | -4 / - | 4 | ✓ Closing observed |
| 09-14 21:23 | 80m | - / - | EA4CFT | -8 / - | 2 | Partial capture |
| 09-14 21:20 | 80m | - / - | SM/DB9LG | +2 / - | 3 | Partial capture |
| 09-14 21:20 | 80m | +5 / - | SP100PKP | - / - | 4 | ✓ Closing fragment |
| 09-14 21:16 | 80m | +14 / - | SP100PKP | - / - | 2 | ✓ Closing fragment |
| 09-14 21:16 | 80m | +9 / - | II6IALU | -16 / - | 4 | ✓ Closing observed |
| 09-14 20:46 | 40m | - / - | SO100PKP | -16 / - | 2 | ✓ Closing fragment |
| 09-14 19:18 | 80m | +2 / - | SK150LM | -6 / - | 3 | ✓ Closing observed |
| 09-14 19:15 | 80m | -12 / - | SP1373AB | -2 / - | 2 | ✓ Closing observed |
| 09-14 19:14 | 80m | - / - | II8IHBC | -2 / - | 2 | ✓ Closing fragment |
| 09-14 19:00 | 80m | - / - | DL1BJL | -6 / - | 2 | Partial capture |
| 09-14 18:59 | 80m | -6 / - | SK150LM | +14 / - | 5 | ✓ Closing observed |
| 09-14 18:53 | 80m | +2 / - | SK150LM | - / - | 2 | ✓ Closing fragment |
| 09-14 18:48 | 80m | - / - | PA0LUX | -12 / - | 2 | Partial capture |
| 09-14 18:48 | 80m | 0 / - | SK150LM | +3 / - | 3 | ✓ Closing observed |
| 09-14 18:44 | 80m | +6 / - | UB0SMX/P | +3 / - | 2 | ✓ Closing observed |
| 09-14 18:40 | 80m | - / - | 9A5SPC | +1 / - | 2 | Partial capture |
| 09-14 18:40 | 80m | - / - | F4ANC | -16 / - | 2 | Partial capture |
| 09-14 18:40 | 80m | +6 / - | UB0SMX/P | - / - | 2 | ✓ Closing fragment |
| 09-14 18:27 | 80m | +6 / - | UB0SMX/P | - / - | 8 | ✓ Closing fragment |
| 09-14 18:21 | 80m | +9 / - | UB0SMX/P | +9 / - | 3 | ✓ Closing observed |
| 09-14 05:13 | 40m | - / - | 9A/DK9RC | +7 / - | 4 | Partial capture |
| 09-13 20:40 | 80m | +1 / - | SK150LM | - / - | 2 | ✓ Closing fragment |
| 09-13 20:32 | 80m | +4 / - | SN40KZE | -6 / - | 2 | ✓ Closing observed |
| 09-13 20:19 | 80m | -3 / - | SN40KZE | +11 / - | 3 | ✓ Closing observed |
| 09-13 19:58 | 80m | - / -11 | HA1DCQ | -2 / - | 2 | ✓ Closing fragment |
| 09-13 19:45 | 80m | +2 / - | SN40KZE | - / - | 3 | ✓ Closing fragment |
| 09-13 19:32 | 80m | +1 / - | SN40KZE | - / - | 2 | ✓ Closing fragment |
| 09-13 19:29 | 80m | -8 / - | SN40KZE | +4 / - | 2 | ✓ Closing observed |
| 09-13 19:12 | 80m | -6 / - | SN40KZE | +16 / - | 3 | ✓ Closing observed |
| 09-13 18:57 | 80m | +4 / - | DM0CRACY | - / - | 3 | ✓ Closing fragment |
| 09-13 18:42 | 80m | - / - | SV8/F2VX | -12 / - | 2 | Partial capture |
| 09-13 18:40 | 80m | +1 / - | DM0CRACY | +15 / - | 9 | ✓ Closing observed |
| 09-13 18:33 | 80m | - / - | OM3CUG | 0 / - | 2 | Partial capture |
| 09-13 18:33 | 80m | 0 / - | SN40KZE | - / - | 2 | ✓ Closing fragment |
| 09-13 18:29 | 80m | +5 / - | SN40KZE | +8 / - | 2 | ✓ Closing observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 204115 +0 431 SV8/F6BLP Z335MK RR73 204130 +7 431 Z335MK SV8/F6BLP 73 204145 -4 431 CQ Z335MK 204245 +1 431 SV8/F6BLP Z335MK RR73 (x2) 204345 +9 431 CQ Z335MK (x6) 204915 +7 430 SV8/F6BLP Z335MK RR73 204930 -9 2735 Z335MK SN100PKP 73 205015 +3 430 SV8/F6BLP Z335MK RR73 205030 +19 864 Z335MK SK150LM 73
UTC dB Audio Message 185930 -12 1252 CQ Z335MK (x2) 190600 -11 1252 WD0U/DU3 Z335MK RR73 192800 -24 1252 G4NKV/P Z335MK RR73 193115 +9 1253 Z335MK G4NKV/P 73 194015 -15 1103 Z335MK WB8YJF/NA67 73 194100 -23 1251 CQ Z335MK 194745 +1 1032 Z335MK TA2/TF1OL 73 195600 -20 1252 CQ Z335MK (x2) 200500 -22 1251 G4NKV/P Z335MK RR73 200845 -5 1251 Z335MK G4NKV/P 73 200915 -11 488 Z335MK WB8YJF/NA67 73 202315 +7 1677 Z335MK DK5AN/P 73 203515 -5 1251 Z335MK II4IANT 73
UTC dB Audio Message 185315 -11 2377 Z335MK DK2CC JO63 (x3) 185430 -9 1155 Z335MK SM7/DL5BTE 73 190000 -9 987 <Z335MK> OH6NEQ KP21 190000 -6 2349 Z335MK HP/WE9G 73 232200 -7 2287 Z335MK OE100OEVSV RR73 232245 -22 1432 TM60LOUV Z335MK (x6) 212730 -16 2022 Z335MK 9A60CBM 73 212930 -7 1733 Z335MK SM7/DL5BTE 73
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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