ON3FW — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Belgium Most frequent locator attributed to this token: JO20

Receiver-side FT8 activity involving ON3FW, decoded by SO8OO in southeastern Poland. 203 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 36 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-17.

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 203 FT8 messages attributed to ON3FW as the transmitting token by decoded message structure across 36 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (76%), followed by 10 m (20%) and 80 m (3%). Most decodes (56%) fell within the six-hour window 16:00-22:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

203
Messages attributed
36
UTC dates decoded
57
Active 15-min windows
-9 dB
Estimated median S/N

Bands

80m · 6 40m · 1 20m · 155 10m · 41
First attributed message: 2026-06-07
Last attributed message: 2026-09-17 18:36 UTC

Observed FT8 message patterns

Attributed sample
203 messages
Active dates
36 UTC dates
Estimated median S/N
-9 dB
Estimated 10th-90th percentile
-18 to +4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 44, moderate (-15 to -9 dB) 62, strong (≥ -8 dB) 97.

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 ON3FW 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 ON3FW

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
JO20 · 158 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,194 km (approx.)
Last such locator decoded
2026-09-17 18:36 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 UTCBandON3FW S/NCounterpartCounterpart S/NMsgsCapture
09-17 19:55 60m - / - 9A4ZM +6 / - 2 Partial capture
09-17 18:38 80m - / -7 OZ7CL -1 / - 7 ✓ Closing fragment
09-17 18:34 80m -10 / - OZ7CL - / - 2 Partial capture
09-17 18:12 40m - / -8 HA1BF +4 / - 2 ✓ Closing fragment
09-07 18:23 80m - / -6 DO2XB +3 / - 3 ✓ Closing fragment
09-07 18:21 80m - / -8 HA7TM +1 / - 3 ✓ Closing fragment
09-02 08:33 40m - / -8 DK5UR -10 / - 4 ✓ Closing fragment
08-31 17:34 20m +4 / - K2TQC - / - 5 Partial capture
08-30 19:25 40m - / +8 G8KHF -4 / - 4 Partial capture
08-27 07:56 20m +2 / - VK3JMA - / - 2 Partial capture
08-27 06:48 20m +7 / - VK3JMA - / - 8 Partial capture
08-26 18:48 20m -6 / - TF1A - / - 2 Partial capture
08-26 18:45 20m -2 / - HI8CQ - / - 5 Partial capture
08-26 08:08 20m +3 / - VK6BAD - / -19 5 Partial capture
08-26 08:02 20m +1 / - VK6BAD - / - 6 Partial capture
08-26 07:56 20m +5 / - VK3HA - / -13 6 ✓ Closing fragment
08-26 07:55 20m +4 / - KD4AP - / - 2 Partial capture
08-26 07:48 20m -2 / - NL8F - / - 4 Partial capture
08-26 07:45 20m -2 / - W6ALF - / - 2 Partial capture
08-26 07:43 20m -1 / -11 KB3Z -13 / -24 4 Partial capture
08-25 20:23 20m +2 / - EX7DY - / - 8 Partial capture
08-24 18:49 20m - / -8 OZ2SPACE -9 / - 2 Partial capture
08-24 18:43 20m +2 / - <...> - / - 11 Partial capture
08-23 20:09 20m -11 / - 2E0IJC - / - 3 Partial capture
08-21 21:22 20m -10 / - KC3WOX - / - 3 Partial capture
08-21 21:09 20m -9 / - KC3WOX - / - 3 Partial capture
08-21 21:07 20m -9 / - KP4QVQ - / - 2 Partial capture
08-21 19:15 20m -18 / - K2TQC - / - 2 Partial capture
08-16 20:31 10m -12 / -15 SN1B -14 / -10 6 Partial capture
08-16 16:48 20m - / -6 OH2ZZ -20 / - 2 ✓ Closing fragment
08-14 19:57 20m - / -6 M0LAD -8 / - 2 ✓ Closing fragment
08-14 19:57 20m - / -11 SE2P -9 / - 4 ✓ Closing fragment
08-14 17:16 20m - / -8 YO4LUP -13 / - 3 ✓ Closing fragment
08-12 21:03 20m -16 / - PT2ND - / -19 3 Partial capture
08-03 19:04 20m - / +2 Z62NS -1 / - 2 ✓ Closing fragment
07-31 20:52 20m -10 / - W4DXM - / - 4 Partial capture
07-29 20:59 20m - / -17 LU5EW -5 / - 2 ✓ Closing fragment
07-28 17:18 20m -13 / - SV1EAG -15 / - 2 ✓ Closing observed

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

60m 
UTC    dB Audio  Message
195500  +6  676  ON3FW 9A4ZM JN86 (x2)
80m 
UTC    dB Audio  Message
182130  +1 2139  ON3FW HA7TM -08 (x3)
182330  -1  750  ON3FW DO2XB JO71 (x3)
183445  -8 1055  OZ7CL ON3FW JO20 (x2)
183830  -4  334  ON3FW OZ7CL -07 (x7)
40m 
UTC    dB Audio  Message
192515  -6 1446  ON3FW G8KHF +08 (x4)
083345  -9  634  ON3FW DK5UR -08 (x4)
161245 -18 2335  ON3FW G4DBW +01
052830  +2 1199  ON3FW SN100PKP -03
113530  -2 2202  ON3FW SP100PKP -11
200945  -5  643  ON3FW HB9XBY RR73
212830 -21 2190  ON3FW K1SM -14
181200  +6 1221  ON3FW HA1BF -08 (x2)
20m 
UTC    dB Audio  Message
064930 +11  932  VK3JMA ON3FW JO20 (x7)
164715 -11  905  ON3FW G3EFG RRR
193200  -6 1505  ON3FW 3A2MW RR73
110215 -18 1434  ON3FW EC5M -10
173445  +0  931  K2TQC ON3FW JO20 (x5)
10m 
UTC    dB Audio  Message
191815 -12  944  CX3AS ON3FW JO20
175215 -15  945  LU8EX ON3FW R-13
203130 -14 1165  ON3FW SN1B -15
203145 -14  944  SN1B ON3FW R-10
203200 -16 1164  ON3FW SN1B -15 (x2)
203245  -9  944  SN1B ON3FW R-10
203300 -14 1164  ON3FW SN1B RRR
203545 -16  944  EW8DU ON3FW RR73
203645 -16  945  HG8LXL ON3FW +01

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.

Explore CW reception at SO8OO

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