G4ZAM — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving G4ZAM, decoded by SO8OO in southeastern Poland. 794 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 94 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-11.
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 794 FT8 messages attributed to G4ZAM as the transmitting token by decoded message structure across 94 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (42%), followed by 80 m (32%) and 20 m (26%). The busiest six-hour window was 01:00-07:00 UTC, containing 48% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.
Overview
Bands
Last attributed message: 2026-10-11 19:57 UTC
Observed FT8 message patterns
- Attributed sample
- 794 messages
- Active dates
- 94 UTC dates
- Estimated median S/N
- -8 dB
- Estimated 10th-90th percentile
- -17.9 to +1 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 116, moderate (-15 to -9 dB) 238, strong (≥ -8 dB) 440.
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 G4ZAM 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 G4ZAM
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
- IO91 · 570 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,607 km (approx.)
- Last such locator decoded
- 2026-10-11 19:57 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 | G4ZAM S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-11 19:47 | 40m | -5 / - | EY7BM | - / - | 2 | Partial capture |
| 10-11 19:37 | 40m | -18 / - | 1F3SW | - / -8 | 2 | ✓ Closing fragment |
| 10-08 05:01 | 40m | -13 / - | WZ4K | - / -15 | 3 | Partial capture |
| 10-05 01:57 | 40m | -10 / - | 3B9FR | - / - | 2 | Partial capture |
| 10-04 20:10 | 80m | -2 / - | V51WH | - / - | 2 | Partial capture |
| 10-04 05:11 | 40m | -12 / - | WE9G | - / - | 2 | Partial capture |
| 10-03 04:14 | 160m | - / -24 | LA5USA | -10 / - | 2 | Partial capture |
| 10-03 03:41 | 40m | -6 / - | N2KJM | - / - | 2 | Partial capture |
| 10-02 21:22 | 40m | -14 / - | BG0FQU | - / - | 2 | Partial capture |
| 10-02 06:05 | 40m | -12 / - | KE5ETC | - / -13 | 2 | Partial capture |
| 10-02 05:56 | 40m | -18 / - | N7ENS | - / - | 2 | Partial capture |
| 10-02 05:43 | 80m | -17 / - | W0RLD | - / -14 | 2 | Partial capture |
| 10-01 03:19 | 80m | -9 / -2 | LY5A | +10 / -1 | 5 | ✓ Full exchange observed |
| 10-01 03:10 | 80m | -12 / - | KN4V | - / - | 2 | Partial capture |
| 10-01 03:04 | 80m | -15 / - | Z61DX | -2 / -9 | 4 | ✓ Closing observed |
| 09-29 18:45 | 80m | -9 / - | IQ9SZ | - / - | 2 | Partial capture |
| 09-29 02:20 | 40m | -5 / - | KJ5ORI | - / - | 2 | Partial capture |
| 09-29 02:09 | 40m | -6 / - | AC9XW | - / - | 2 | Partial capture |
| 09-28 23:43 | 40m | -12 / - | WY0V | - / - | 2 | Partial capture |
| 09-28 23:37 | 40m | -5 / - | WW5G | - / - | 6 | Partial capture |
| 09-28 23:36 | 40m | -4 / - | N9EIT | - / -7 | 2 | ✓ Closing fragment |
| 09-28 05:04 | 40m | -11 / - | K5WVF | - / - | 2 | Partial capture |
| 09-28 03:47 | 40m | -8 / - | AF4OD | - / -12 | 4 | ✓ Closing fragment |
| 09-27 20:52 | 40m | +3 / - | SM7OYP | - / -1 | 2 | ✓ Closing fragment |
| 09-27 20:50 | 40m | -10 / - | HB10GBT | - / -2 | 2 | Partial capture |
| 09-26 05:35 | 80m | -20 / - | K1QD | - / -12 | 2 | ✓ Closing fragment |
| 09-26 04:32 | 80m | -16 / - | KC9YTT | - / - | 2 | Partial capture |
| 09-26 04:23 | 80m | -14 / - | WE9G | - / - | 2 | ✓ Closing fragment |
| 09-25 04:45 | 80m | -10 / -8 | HK3TY | -14 / -21 | 6 | ✓ Full exchange observed |
| 09-23 06:14 | 40m | -10 / - | K6FA | - / -15 | 2 | Partial capture |
| 09-23 06:06 | 40m | -12 / - | KQ4VB | - / -17 | 2 | Partial capture |
| 09-23 06:00 | 40m | -13 / - | KB5YNF | - / -16 | 4 | ✓ Closing fragment |
| 09-23 04:44 | 80m | -16 / - | KY2J | - / -6 | 2 | ✓ Closing fragment |
| 09-21 23:10 | 80m | -9 / - | RI1FJZ | - / - | 6 | Partial capture |
| 09-21 22:02 | 40m | -9 / - | EP2AES | - / - | 3 | Partial capture |
| 09-20 22:01 | 40m | 0 / - | DS4HIW | - / - | 2 | Partial capture |
| 09-20 01:30 | 40m | -4 / - | W6M | - / - | 2 | Partial capture |
| 09-20 01:28 | 40m | 0 / - | WA6YOU | - / - | 2 | Partial capture |
| 09-20 01:25 | 40m | -4 / - | W6M | - / - | 2 | Partial capture |
| 09-20 01:24 | 40m | +1 / -4 | SM3JGG | +16 / -5 | 5 | ✓ Full exchange observed |
| 09-20 01:22 | 40m | 0 / - | W6G | - / - | 2 | Partial capture |
| 09-19 23:36 | 40m | -6 / - | KD3GC | - / -16 | 2 | ✓ Closing fragment |
| 09-19 23:33 | 40m | -16 / - | S79KW | - / - | 2 | Partial capture |
| 09-19 01:47 | 40m | -4 / - | EP2AES | - / - | 2 | Partial capture |
| 09-19 01:42 | 40m | -7 / - | EP2AES | - / - | 3 | Partial capture |
| 09-19 01:38 | 40m | -4 / - | YN8ZAC | - / - | 4 | Partial capture |
| 09-18 05:31 | 40m | -2 / - | W6G | - / - | 2 | Partial capture |
| 09-18 05:28 | 40m | -4 / - | KX8XX | - / -14 | 4 | Partial capture |
| 09-18 05:26 | 40m | -7 / - | KD9DIF | - / -14 | 3 | ✓ Closing fragment |
| 09-18 05:23 | 40m | -12 / - | N7QT | - / -16 | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 015745 -9 1783 3B9FR G4ZAM IO91 021545 -8 462 8P6ET G4ZAM IO91 045945 -19 2155 LU6WAV G4ZAM IO91 050115 -17 1332 WZ4K G4ZAM IO91 (x3) 050515 -7 1491 N5RN G4ZAM IO91 053715 -15 1624 C5R G4ZAM IO91 193730 -20 2146 1F3SW G4ZAM R-08 (x2) 194700 -6 1067 EY7BM G4ZAM IO91 (x2) 195130 -3 1942 D2ACE G4ZAM IO91 195630 -8 1066 EY7BM G4ZAM IO91 195730 -11 1942 D2ACE G4ZAM IO91
UTC dB Audio Message 030515 -2 852 G4ZAM Z61DX RR73 030530 -17 853 Z61DX G4ZAM 73 031045 -9 1862 KN4V G4ZAM IO91 (x2) 031945 -7 2385 LY5A G4ZAM IO91 032000 +7 2384 G4ZAM LY5A -02 032015 -10 2385 LY5A G4ZAM R-01 032030 +14 2384 G4ZAM LY5A RR73 032045 -10 2385 LY5A G4ZAM 73 032745 -11 2176 N0YO G4ZAM IO91 054345 -16 2244 W0RLD G4ZAM R-14 (x2) 201045 -4 2710 V51WH G4ZAM IO91 (x2) 223645 -11 1585 HF50HSP G4ZAM IO91
UTC dB Audio Message 222500 -10 1808 G4ZAM IU5TUD RR73 202800 -8 2297 G4ZAM SM5EPO -20 (x2) 202900 +9 786 G4ZAM DP6K JO50 (x3) 203730 +10 996 G4ZAM 9A2RD -20 (x2) 203930 +9 2077 G4ZAM <...> -17 214015 +0 1167 G4ZAM OZ1KZX -14 (x2) 214315 -18 2294 G4ZAM EA4HPY RR73 021245 -24 1569 LY3BRA G4ZAM IO91 041445 -6 972 G4ZAM LA5USA -24 (x2)
UTC dB Audio Message 100430 +2 2338 RL3K G4ZAM -05 100445 +6 913 G4ZAM RL3K R-15 100500 -5 912 RL3K G4ZAM RR73 100515 +5 912 G4ZAM RL3K 73 101015 -17 1918 GM4SJB G4ZAM IO91 (x2) 151515 +6 2407 BG2ATH G4ZAM IO91 (x2) 151700 +3 2103 EP2AES G4ZAM IO91 (x5) 062645 +0 1193 UN0NZZ G4ZAM IO91 (x2)
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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