IZ5FSO — 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 IZ5FSO, decoded by SO8OO in southeastern Poland. 2,321 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 137 UTC dates in the available aggregate history. Observed between 2026-06-06 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 2,321 FT8 messages attributed to IZ5FSO as the transmitting token by decoded message structure across 137 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (51%), followed by 80 m (38%) and 20 m (11%). Several six-hour UTC windows tied for the largest share (75%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8.4 dB.
Overview
Bands
Last attributed message: 2026-10-22 16:13 UTC
Observed FT8 message patterns
- Attributed sample
- 2,321 messages
- Active dates
- 137 UTC dates
- Estimated median S/N
- -8.4 dB
- Estimated 10th-90th percentile
- -17 to 0 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 339, moderate (-15 to -9 dB) 819, strong (≥ -8 dB) 1,163.
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 IZ5FSO 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 IZ5FSO
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
- JN53 · 1,096 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,089 km (approx.)
- Last such locator decoded
- 2026-10-22 16:12 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 | IZ5FSO S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-22 16:12 | 40m | -2 / -1 | E77D | +4 / +5 | 5 | ✓ Full exchange observed |
| 10-22 16:04 | 40m | -9 / -17 | OE5KBO | -4 / - | 3 | ✓ Closing observed |
| 10-22 16:00 | 40m | - / -10 | ON3URT | -8 / - | 2 | ✓ Closing fragment |
| 10-22 15:58 | 40m | -11 / -7 | YO2UKG | 0 / - | 3 | ✓ Closing observed |
| 10-22 15:57 | 40m | -10 / +1 | S53AK | +2 / +2 | 3 | Partial capture |
| 10-22 13:03 | 40m | - / -7 | F4FHR | -10 / - | 2 | ✓ Closing fragment |
| 10-22 03:32 | 40m | - / -7 | CT7BRV | -8 / - | 2 | ✓ Closing fragment |
| 10-21 16:30 | 40m | - / -2 | E70SZ | -6 / - | 2 | ✓ Closing fragment |
| 10-21 16:26 | 40m | -8 / - | SQ9SET | - / -6 | 3 | Partial capture |
| 10-21 13:37 | 40m | - / +8 | OE8MDK | +8 / - | 10 | Partial capture |
| 10-21 13:33 | 40m | -17 / +2 | SQ100LKK | -7 / 0 | 4 | Partial capture |
| 10-21 13:32 | 40m | -12 / -2 | HA7TM | +12 / +8 | 4 | ✓ Full exchange observed |
| 10-21 13:30 | 40m | -14 / -16 | US5WFL | -1 / -5 | 5 | ✓ Full exchange observed |
| 10-21 12:58 | 40m | -12 / -19 | DK1HSI | -10 / - | 4 | ✓ Closing observed |
| 10-21 03:48 | 40m | - / - | RZ4FWA | -19 / - | 2 | Partial capture |
| 10-21 03:45 | 40m | -7 / - | LZ1DPP | - / -11 | 3 | ✓ Closing fragment |
| 10-21 03:41 | 80m | -4 / - | TA4SSK | - / - | 3 | Partial capture |
| 10-21 03:39 | 80m | -7 / -8 | DO1ID | +10 / -1 | 5 | ✓ Full exchange observed |
| 10-21 03:34 | 40m | -9 / -7 | 4X1UF | -18 / -7 | 4 | ✓ Full exchange observed |
| 10-21 03:30 | 40m | -4 / - | G8KHF | - / - | 2 | Partial capture |
| 10-21 03:27 | 80m | -4 / -15 | UR5SG | +18 / +2 | 5 | ✓ Full exchange observed |
| 10-20 16:37 | 40m | 0 / - | S53AK | - / +1 | 2 | Partial capture |
| 10-20 16:35 | 40m | -10 / - | SN5MV | - / - | 2 | ✓ Closing fragment |
| 10-20 16:34 | 40m | -7 / - | 2W0YOX | - / -9 | 2 | ✓ Closing fragment |
| 10-20 15:59 | 40m | -8 / -15 | G4YAN | -5 / -8 | 6 | ✓ Full exchange observed |
| 10-20 15:57 | 40m | -6 / - | RA4PIS | - / - | 2 | Partial capture |
| 10-20 15:55 | 40m | 0 / -13 | EX7CQ | 0 / -8 | 6 | ✓ Full exchange observed |
| 10-20 13:29 | 40m | -12 / - | F4CVA | - / - | 2 | Partial capture |
| 10-20 13:26 | 40m | -18 / - | G6PWS | -19 / -8 | 3 | ✓ Closing observed |
| 10-20 13:19 | 40m | -15 / -3 | IZ1CRA | -18 / +3 | 4 | ✓ Full exchange observed |
| 10-20 03:44 | 40m | -10 / - | RX3ASQ | - / - | 2 | Partial capture |
| 10-20 03:41 | 40m | -3 / - | LZ2II | - / -1 | 3 | ✓ Closing fragment |
| 10-20 03:40 | 40m | -4 / - | LA7DMA | - / -15 | 4 | ✓ Closing fragment |
| 10-20 03:37 | 40m | +2 / - | G8KHF | - / -17 | 3 | ✓ Closing fragment |
| 10-20 03:37 | 40m | -2 / - | SV1FJF | - / - | 3 | Partial capture |
| 10-19 03:44 | 40m | -7 / +2 | SV1ENG | -14 / - | 3 | ✓ Closing observed |
| 10-19 03:35 | 40m | -12 / - | TA5DOB | - / -10 | 4 | Partial capture |
| 10-19 03:34 | 40m | -8 / - | RX3ASQ | - / - | 2 | Partial capture |
| 10-19 03:34 | 40m | - / - | UA4FKT | -4 / - | 2 | Partial capture |
| 10-19 03:32 | 40m | 0 / +3 | LZ2IP | -5 / -1 | 5 | ✓ Full exchange observed |
| 10-19 03:31 | 40m | - / +6 | ON8WR | -3 / - | 2 | ✓ Closing fragment |
| 10-19 03:28 | 40m | +3 / - | G8KHF | -5 / -6 | 5 | ✓ Closing observed |
| 10-18 06:11 | 40m | -12 / -6 | LZ2TDF | -1 / - | 6 | ✓ Closing observed |
| 10-18 06:09 | 40m | -11 / - | DK6WS | - / - | 2 | ✓ Closing fragment |
| 10-18 06:07 | 40m | - / -16 | F4MOJ | -8 / - | 2 | ✓ Closing fragment |
| 10-18 06:05 | 40m | -8 / +5 | SV7BAY | -4 / -3 | 4 | ✓ Full exchange observed |
| 10-18 05:48 | 80m | -13 / -3 | F1PBZ | -7 / +8 | 6 | ✓ Full exchange observed |
| 10-18 05:44 | 80m | -9 / -1 | F8CFO | +2 / - | 3 | ✓ Closing observed |
| 10-18 05:42 | 80m | -10 / - | EA2EED | - / - | 2 | Partial capture |
| 10-18 05:40 | 80m | -17 / - | ON8WR | - / -4 | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 155915 -3 973 IZ5FSO YO2UKG RR73 155930 -11 972 YO2UKG IZ5FSO 73 160045 -8 606 IZ5FSO ON3URT -10 (x2) 160400 -5 638 IZ5FSO OE5KBO -17 (x2) 160445 -9 636 OE5KBO IZ5FSO 73 161115 -10 884 SP8WB IZ5FSO JN53 161215 -3 443 E77D IZ5FSO JN53 161230 +3 444 IZ5FSO E77D -01 161245 -2 443 E77D IZ5FSO R+05 161300 +4 444 IZ5FSO E77D RR73 161315 -1 443 E77D IZ5FSO 73 161330 -14 2266 IZ5FSO R2EN -19 162145 +2 1036 IZ5FSO DK2AM RR73
UTC dB Audio Message 032715 -4 796 UR5SG IZ5FSO JN53 032800 +19 796 IZ5FSO UR5SG -15 032800 -8 1764 IZ5FSO DL1BJL JO33 032815 -3 796 UR5SG IZ5FSO R+02 032830 +18 796 IZ5FSO UR5SG RR73 032845 -5 796 UR5SG IZ5FSO 73 032945 -10 1039 F4CTJ IZ5FSO JN53 033930 -8 237 DO1ID IZ5FSO JN53 033945 +12 238 IZ5FSO DO1ID -08 034000 -6 237 DO1ID IZ5FSO R-01 034015 +8 237 IZ5FSO DO1ID RR73 034030 -8 237 DO1ID IZ5FSO 73 034100 -5 912 TA4SSK IZ5FSO JN53 (x3)
UTC dB Audio Message 133030 +6 679 IZ5FSO PD0PMF -24 (x2) 133115 +3 678 PD0PMF IZ5FSO 73 055545 -15 1039 IZ5FSO OD5ZZ -07 055700 -8 1134 IZ5FSO SV8JVM -13 160515 -10 995 EA4IVO IZ5FSO JN53 (x2) 160745 -12 1274 PA2JH IZ5FSO JN53 162145 +8 905 IZ5FSO G3EFG +01 (x2) 142500 +3 951 IZ5FSO DL3EBJ -01 142515 -9 952 DL3EBJ IZ5FSO R-08 (x3) 142630 -1 951 IZ5FSO DL3EBJ RR73
UTC dB Audio Message 165100 -8 841 IZ5FSO DL2UW -11 (x12) 130530 -16 980 IZ5FSO ON1JP -21
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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