ON3SWS — 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: JO21

Receiver-side FT8 activity involving ON3SWS, decoded by SO8OO in southeastern Poland. 14 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 7 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-10-20.

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 14 FT8 messages attributed to ON3SWS as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (71%), followed by 80 m (29%). In this small sample, the estimated median decoder S/N was -18 dB; no usual signal pattern is inferred.

Overview

14
Messages attributed
7
UTC dates decoded
9
Active 15-min windows
-18 dB
Estimated median S/N

Bands

80m · 4 40m · 10
First attributed message: 2026-06-08
Last attributed message: 2026-10-20 17:31 UTC

Observed FT8 message patterns

Attributed sample
14 messages
Active dates
7 UTC dates
Estimated median S/N
-18 dB
S/N percentile sample
Too small
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 10, moderate (-15 to -9 dB) 4, strong (≥ -8 dB) 0.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with ON3SWS 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 ON3SWS

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
JO21 · 5 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,192 km (approx.)
Last such locator decoded
2026-10-05 16:40 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 UTCBandON3SWS S/NCounterpartCounterpart S/NMsgsCapture
10-22 13:08 40m - / -9 M0OXO -16 / - 2 ✓ Closing fragment
10-22 12:58 40m - / - PE9JAN -13 / - 2 Partial capture
10-22 12:55 40m - / -14 DC1SN -8 / - 3 ✓ Closing fragment
10-20 17:35 40m - / -11 OH3OJ +4 / - 2 Partial capture
10-20 17:30 40m - / - SP2KW +2 / - 4 Partial capture
10-08 17:48 80m - / -4 ON8LX -12 / - 2 ✓ Closing fragment
10-05 16:41 40m - / -14 UA3DIB +1 / - 3 ✓ Closing fragment
10-05 16:40 40m -19 / -19 SM4ONW -2 / - 3 Partial capture
10-01 17:46 40m - / -5 G8KHF -11 / - 5 Partial capture
09-17 17:37 80m - / -7 ON7USB +8 / - 2 ✓ Closing fragment
09-14 17:38 40m - / -15 F6DKQ +1 / - 2 Partial capture
09-10 13:59 40m - / -19 IV3VFP -9 / - 3 Partial capture
09-08 18:59 80m - / -14 DK7UY +2 / - 2 Partial capture
09-04 18:47 80m - / -15 OK1UOZ +17 / - 2 ✓ Closing fragment
09-03 19:33 80m - / -5 PA3EVY 0 / - 2 ✓ Closing fragment
09-01 19:59 80m - / -14 F4BYA -4 / - 4 ✓ Closing fragment
08-31 20:04 80m - / -9 DD7EE +2 / - 3 ✓ Closing fragment
08-31 20:02 80m - / +6 5P1KZX -4 / - 4 ✓ Closing fragment
08-31 18:24 80m - / - DK7TX -11 / - 2 ✓ Closing fragment
08-31 18:24 80m - / - DL8TV +4 / - 3 Partial capture
08-31 18:13 40m - / -2 GB64MOD +3 / - 2 Partial capture
08-28 19:04 80m - / -2 DG6KL -8 / - 4 ✓ Closing fragment
08-26 17:52 40m - / -8 SN40KZE +2 / - 2 Partial capture
08-23 18:46 80m - / -2 DG4ST +2 / - 2 ✓ Closing fragment
08-23 18:44 80m - / -16 DO4TYW -10 / - 2 ✓ Closing fragment
08-23 18:40 40m - / -15 9A4ZM +10 / - 2 Partial capture
08-23 18:38 40m -14 / -12 G0VXE +3 / - 4 ✓ Full exchange observed
08-20 14:03 40m - / -8 DB3MAX -16 / - 2 ✓ Closing fragment
08-18 17:42 40m - / -6 PH3T -16 / - 2 ✓ Closing fragment
08-11 18:03 40m - / -11 EU4U -2 / - 2 ✓ Closing fragment
08-06 19:52 80m - / -21 DL5DSM +10 / - 2 ✓ Closing fragment
08-06 19:50 80m - / -21 SM6MUY +12 / - 2 ✓ Closing fragment
08-05 18:34 40m - / +2 HB9CXZ -3 / - 4 Partial capture
08-04 09:55 40m - / -9 OK1VM -1 / - 3 ✓ Closing fragment
07-30 19:26 80m - / -15 DL1IP -7 / - 3 ✓ Closing fragment
07-30 19:16 40m - / -19 SP7TF -13 / - 2 Partial capture
07-29 19:00 40m - / -9 PD3FJJ -15 / - 2 ✓ Closing fragment
07-28 14:36 40m - / -7 DM9YL -14 / - 2 ✓ Closing fragment
07-27 18:40 40m - / -2 DL9NO -8 / - 2 ✓ Closing fragment
07-27 18:38 40m - / -6 OK1FED -8 / - 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
193400  -2 2500  ON3SWS PA3EVY RR73
184500 -19 1932  ON3SWS PB0ACU -19
184700 +14 2652  ON3SWS OK1UOZ -15 (x2)
185615 -24 1496  ON3SWS HB9EKJ -15
185945  +1 2372  ON3SWS DK7UY JO44 (x2)
173745 +10 2648  ON3SWS ON7USB -07 (x2)
174100 -19 1760  ON3SWS PG7VG RR73
174830 -24 1641  HA8ZG ON3SWS JO21
174815 -14 1877  ON3SWS ON8LX -04 (x2)
174500  -7 2351  ON3SWS HB9CEV RR73
174900 -13 2003  ON3SWS F4GAJ RR73
40m 
UTC    dB Audio  Message
173030  +3 1579  ON3SWS SP2KW JO92 (x3)
173145 -21 1579  M9XPN ON3SWS +17
173500  -2  701  ON3SWS OH3OJ -11 (x2)
125530  -8 1621  ON3SWS DC1SN -14 (x3)
125800 -17 2065  ON3SWS PE9JAN JO22 (x2)
130845 -14 1772  ON3SWS M0OXO -09 (x2)
174015 -17 1581  ON3SWS SA6BZZ RR73
174045 -11 1583  ON3SWS GJ0KYZ +05
20m 
UTC    dB Audio  Message
174345 -17 1053  ON3SWS UA3VVA -12
134330  -8 2422  ON3SWS IU5HIU JN53
10m 
UTC    dB Audio  Message
173930  -3 1707  ON3SWS HA3GX JN96
132715 -21 1713  ON3SWS EG5MYC -06

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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