G4ZFJ — 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 G4ZFJ, decoded by SO8OO in southeastern Poland. 6,329 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 115 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-23.
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 6,329 FT8 messages attributed to G4ZFJ as the transmitting token by decoded message structure across 115 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (67%), followed by 80 m (31%) and 40 m (1%). Most decodes (81%) 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 (94%); the estimated median was +1 dB.
Overview
Bands
Last attributed message: 2026-10-23 18:24 UTC
Observed FT8 message patterns
- Attributed sample
- 6,329 messages
- Active dates
- 115 UTC dates
- Estimated median S/N
- +1 dB
- Estimated 10th-90th percentile
- -6 to +8 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 45, moderate (-15 to -9 dB) 306, strong (≥ -8 dB) 5,978.
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 G4ZFJ 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 G4ZFJ
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
- JO01 · 3,678 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,469 km (approx.)
- Last such locator decoded
- 2026-10-22 22:09 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 | G4ZFJ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-23 18:23 | 60m | 0 / +8 | HG2DX | -14 / +10 | 4 | ✓ Full exchange observed |
| 10-22 22:09 | 60m | +15 / - | Z68QQ | +2 / -7 | 5 | ✓ Full exchange observed |
| 10-22 22:01 | 60m | +13 / - | EP2AES | - / - | 12 | Partial capture |
| 10-21 22:24 | 60m | +7 / -9 | UD6AWH | -12 / -6 | 10 | ✓ Full exchange observed |
| 10-21 21:41 | 60m | +10 / - | OK2MFD | - / +5 | 6 | ✓ Closing fragment |
| 10-21 21:39 | 60m | +14 / - | UR5EDX | - / - | 4 | Partial capture |
| 10-21 21:34 | 60m | +1 / - | UR5EDX | - / - | 3 | Partial capture |
| 10-21 21:29 | 60m | +9 / - | UR5EDX | - / - | 4 | Partial capture |
| 10-21 20:18 | 60m | 0 / - | Z30A | - / -8 | 21 | ✓ Closing fragment |
| 10-21 19:45 | 60m | 0 / - | EA6EJ | - / -16 | 4 | ✓ Closing fragment |
| 10-21 19:27 | 60m | +4 / - | Z30A | - / - | 4 | Partial capture |
| 10-21 19:23 | 60m | +3 / - | EU7DW | - / - | 3 | Partial capture |
| 10-21 19:15 | 60m | +3 / - | Z30A | - / - | 14 | Partial capture |
| 10-21 19:13 | 60m | -3 / - | EU7DW | - / - | 4 | Partial capture |
| 10-21 19:11 | 60m | +2 / - | OM2CW | -23 / +5 | 5 | ✓ Closing observed |
| 10-21 17:52 | 60m | +2 / -13 | R3BHK | -14 / -9 | 7 | ✓ Full exchange observed |
| 10-21 17:43 | 60m | +4 / - | SV4OZF | - / -6 | 4 | ✓ Closing fragment |
| 10-21 17:34 | 60m | 0 / +3 | DC2MA | -16 / -10 | 5 | ✓ Full exchange observed |
| 10-21 17:32 | 60m | -2 / -1 | DL4NFB | -9 / +5 | 4 | ✓ Full exchange observed |
| 10-21 17:30 | 60m | +1 / -15 | SP8V | -2 / -7 | 6 | ✓ Full exchange observed |
| 10-21 17:29 | 60m | 0 / +9 | OZ2CDJ | -10 / - | 3 | Partial capture |
| 10-21 17:25 | 60m | +4 / - | OH2DKQ | - / -2 | 3 | ✓ Closing fragment |
| 10-21 17:15 | 60m | +4 / +7 | E74MG | -8 / -6 | 5 | ✓ Full exchange observed |
| 10-21 17:05 | 60m | +4 / - | TA5DOB | - / - | 4 | Partial capture |
| 10-21 16:17 | 60m | -1 / +4 | LY6AK | -6 / -5 | 8 | ✓ Full exchange observed |
| 10-21 15:58 | 60m | -3 / -16 | EW6PG | +7 / -4 | 20 | Partial capture |
| 10-21 15:57 | 60m | 0 / - | EW6DO | - / - | 2 | Partial capture |
| 10-20 18:18 | 60m | +7 / -9 | SV1SUO | -2 / -1 | 7 | ✓ Full exchange observed |
| 10-20 18:13 | 60m | +2 / - | HB9CVT | -16 / -2 | 6 | ✓ Closing observed |
| 10-20 17:45 | 60m | +2 / - | 5P1OT | - / +1 | 5 | ✓ Closing fragment |
| 10-20 17:42 | 60m | +1 / - | EA4IPN | - / -2 | 3 | ✓ Closing fragment |
| 10-20 16:57 | 60m | +3 / - | F6BQX | -11 / +10 | 4 | ✓ Full exchange observed |
| 10-20 16:49 | 60m | +2 / - | DJ1NE | -8 / - | 6 | ✓ Full exchange observed |
| 10-20 16:48 | 60m | +2 / -9 | F2JD | -14 / +1 | 5 | ✓ Full exchange observed |
| 10-20 06:29 | 60m | +3 / - | EA7KS | - / -4 | 4 | ✓ Closing fragment |
| 10-20 06:22 | 60m | -1 / - | K0RC | - / -11 | 6 | ✓ Closing fragment |
| 10-20 06:20 | 60m | -2 / -4 | IZ8EYN | -16 / -12 | 3 | ✓ Full exchange observed |
| 10-20 06:16 | 60m | +2 / - | NP3MR | - / -12 | 7 | ✓ Closing fragment |
| 10-19 22:59 | 60m | +3 / -7 | 4Z1KN | -5 / -6 | 13 | ✓ Full exchange observed |
| 10-19 20:33 | 60m | -3 / +9 | I4JLF | -13 / -14 | 5 | ✓ Full exchange observed |
| 10-19 20:32 | 60m | -1 / - | SQ9GAI | - / -4 | 3 | ✓ Closing fragment |
| 10-19 19:41 | 60m | +2 / - | OE8PIT | -4 / -10 | 7 | ✓ Closing observed |
| 10-19 19:37 | 60m | 0 / - | IU4UFT | - / - | 3 | Partial capture |
| 10-19 18:23 | 60m | +1 / - | SP1IWC | -3 / - | 5 | ✓ Full exchange observed |
| 10-19 18:19 | 60m | +2 / +1 | HA3KZ | -12 / -12 | 6 | ✓ Full exchange observed |
| 10-19 18:17 | 60m | 0 / - | YL3NF | +4 / - | 6 | ✓ Full exchange observed |
| 10-19 18:02 | 60m | +4 / -12 | RZ4LC | +4 / -2 | 5 | ✓ Full exchange observed |
| 10-19 17:50 | 60m | -2 / - | OH7MFO | - / - | 4 | Partial capture |
| 10-19 17:44 | 60m | -2 / - | LA8HAA | - / -12 | 7 | ✓ Closing fragment |
| 10-19 17:29 | 60m | +6 / - | LB8TG | -16 / +9 | 10 | ✓ Closing observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 220415 +13 712 EP2AES G4ZFJ JO01 (x6) 220900 +14 587 Z68QQ G4ZFJ JO01 220915 +2 2576 G4ZFJ Z68QQ +16 220930 +16 587 Z68QQ G4ZFJ R-07 220945 +1 2576 G4ZFJ Z68QQ RR73 221000 +16 587 Z68QQ G4ZFJ 73 182315 -13 2178 G4ZFJ HG2DX +08 182330 +0 698 HG2DX G4ZFJ R+10 182345 -15 2178 G4ZFJ HG2DX RR73 182400 +0 699 HG2DX G4ZFJ 73
UTC dB Audio Message 221545 +5 2233 R6AR G4ZFJ JO01 221600 -1 1583 G4ZFJ R6AR +07 221615 +6 2233 R6AR G4ZFJ R-03 221630 -1 1583 G4ZFJ R6AR RR73 221645 +4 2233 R6AR G4ZFJ 73 231400 +9 859 RA7E G4ZFJ JO01 231415 -10 1592 G4ZFJ RA7E -07 231430 +8 859 RA7E G4ZFJ R-09 231445 -8 1592 G4ZFJ RA7E RR73 231500 +12 859 RA7E G4ZFJ 73 231530 +14 859 SX37VER G4ZFJ -07 231545 -14 1113 G4ZFJ DL/N0PNG R+17 (x4)
UTC dB Audio Message 065630 -2 429 RD3FY G4ZFJ 73 064700 -24 2315 KR4LQH G4ZFJ JO01 (x2) 064830 -6 440 AD9GE G4ZFJ JO01 (x5) 065300 -1 439 WP4TUN G4ZFJ JO01 (x7)
UTC dB Audio Message 195730 +4 941 G4ZFJ S57MPU JN76 (x6)
UTC dB Audio Message 191545 +10 2557 RI1FJL G4ZFJ JO01 (x11)
UTC dB Audio Message 073615 -11 2668 TK4BB G4ZFJ JO01 (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.
CW
No CW receptions recorded for this callsign in the last 30 days.
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