ON3RUM — 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: JO10

Receiver-side FT8 activity involving ON3RUM, decoded by SO8OO in southeastern Poland. 459 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 20 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-11-06.

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 459 FT8 messages attributed to ON3RUM as the transmitting token by decoded message structure across 20 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (78%), followed by 20 m (13%) and 80 m (9%). Most decodes (52%) fell within the six-hour window 18:00-00:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

459
Messages attributed
20
UTC dates decoded
63
Active 15-min windows
-8 dB
Estimated median S/N

Bands

80m · 42 40m · 357 20m · 60
First attributed message: 2026-06-06
Last attributed message: 2026-11-06 10:41 UTC

Observed FT8 message patterns

Attributed sample
459 messages
Active dates
20 UTC dates
Estimated median S/N
-8 dB
Estimated 10th-90th percentile
-17 to 0 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 88, moderate (-15 to -9 dB) 136, strong (≥ -8 dB) 235.

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 ON3RUM 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 ON3RUM

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
JO10 · 332 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,335 km (approx.)
Last such locator decoded
2026-11-06 10:40 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 UTCBandON3RUM S/NCounterpartCounterpart S/NMsgsCapture
11-06 10:40 40m -16 / - DL1SIS - / - 2 ✓ Closing fragment
11-06 10:25 40m -18 / +3 YL3CW +4 / -1 4 ✓ Full exchange observed
11-06 10:23 40m - / 0 DL8SEE -14 / - 2 ✓ Closing fragment
11-06 10:20 40m -18 / - M7FSE - / - 2 Partial capture
11-06 10:17 40m - / -7 OZ9FF -12 / - 2 ✓ Closing fragment
11-06 10:10 40m -17 / -6 OE6TNO -9 / - 7 ✓ Closing observed
11-06 10:07 40m -16 / - GM4ZTO - / - 4 Partial capture
11-06 09:47 40m -18 / +8 HB9ELE -3 / - 3 ✓ Closing observed
10-29 14:15 40m -10 / -7 IU1CYA +2 / - 4 ✓ Closing observed
10-29 14:11 40m -9 / - ON7AMI - / -8 6 ✓ Closing fragment
10-29 08:24 80m -16 / - ON4KEB -21 / -7 5 ✓ Closing observed
10-29 08:20 80m -18 / +6 ON3ANY -17 / +7 10 ✓ Full exchange observed
10-29 06:34 80m -15 / - ON3ANY - / - 7 Partial capture
10-28 08:11 40m -20 / -3 ON8LX -15 / - 4 ✓ Closing observed
10-27 07:33 40m -15 / - DA0M - / -12 2 ✓ Closing fragment
10-27 07:30 40m -15 / - ON3ANY -8 / - 4 ✓ Closing observed
10-23 08:47 40m -18 / +6 ON3ANY -12 / +3 13 Partial capture
10-23 08:46 40m -15 / - F6FHZ - / -11 2 ✓ Closing fragment
10-23 08:45 40m -14 / -7 OK2CNI +3 / -3 5 ✓ Full exchange observed
10-23 08:44 40m -18 / - GM5CAR - / -8 2 ✓ Closing fragment
10-23 08:40 40m -16 / - ON3ANY - / - 4 Partial capture
10-15 19:34 40m -4 / - DL/SP3OKU - / -6 2 Partial capture
10-15 19:32 40m - / -4 R3BBX/1 -6 / - 3 Partial capture
10-15 19:32 40m -3 / - VP9/K0PJH - / -6 2 Partial capture
10-15 19:28 40m -3 / -7 IK2ZJR +1 / - 5 ✓ Full exchange observed
10-15 19:25 40m -2 / - DL6NAC -3 / - 5 ✓ Full exchange observed
10-15 19:21 40m 0 / - OM3PR - / -13 4 ✓ Closing fragment
10-15 19:18 40m +3 / +2 IU4DTV -7 / +10 3 Partial capture
10-15 19:18 40m +2 / -2 IU8RFW -5 / 0 10 ✓ Full exchange observed
10-15 19:16 40m -8 / - M7GOA - / -19 2 Partial capture
10-15 19:15 40m -7 / - F4BYA +4 / -11 4 Partial capture
08-31 23:46 40m - / - W1JBD -11 / - 2 Partial capture
08-31 23:44 40m +1 / - WB2EQE - / +1 3 Partial capture
08-31 23:39 40m -4 / - RI1FJL - / - 12 Partial capture
08-31 23:29 40m +1 / - RI1FJL - / - 7 Partial capture
08-31 23:14 40m -1 / - RI1FJL - / - 18 Partial capture
08-31 23:04 40m -3 / - RI1FJL - / - 14 Partial capture
08-31 22:20 40m -2 / - RI1FJL - / - 17 Partial capture
08-31 21:59 40m -2 / - RI1FJL - / - 28 Partial capture
08-31 21:38 40m -6 / - RI1FJL - / - 20 Partial capture
08-31 21:23 40m -9 / - RI1FJL - / - 21 Partial capture
08-31 21:02 40m -9 / - RI1FJL - / -16 22 Partial capture
08-30 13:45 20m +14 / 0 RI1FJL -8 / 0 10 Partial capture
08-30 12:39 20m -2 / - <...> - / +5 2 Partial capture
08-30 12:36 20m -4 / - OH/SM5MRW - / +5 3 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
101815 -13 2317  ON3RUM OZ9FF RR73
101900 -18 2371  DL8SEE ON3RUM JO10
102000 -18 2371  M7FSE ON3RUM JO10 (x2)
102130 -18 2371  M7PHE ON3RUM JO10
102315 -14 1097  ON3RUM DL8SEE +00 (x2)
102430 -18 2371  PD1RGW ON3RUM JO10
102530 -20 2371  YL3CW ON3RUM JO10
102545  +5 2465  ON3RUM YL3CW +03
102600 -16 2372  YL3CW ON3RUM R-01
102615  +2 2465  ON3RUM YL3CW RR73
104045 -17 2370  DL1SIS ON3RUM JO10 (x2)
104200  -3  366  ON3RUM HA3HZ JN96
80m 
UTC    dB Audio  Message
082030 -15 2276  ON3ANY ON3RUM JO10 (x4)
082215 -15 1170  ON3RUM ON3ANY +06
082230 -16 1229  ON3ANY ON3RUM R+07
082245 -18 1170  ON3RUM ON3ANY RR73
082330 -16 1229  ON3ANY ON3RUM R+07
082345 -19 1170  ON3RUM ON3ANY RR73
082400 -17 1229  ON3ANY ON3RUM 73
082445 -21 1229  ON3RUM ON4KEB JO20 (x2)
082530 -17 1229  ON4KEB ON3RUM -07 (x2)
082615 -20 1229  ON3RUM ON4KEB 73
20m 
UTC    dB Audio  Message
123715  -4 2030  OH/SM5MRW ON3RUM JO10 (x2)
123915  -6 2167  <...> ON3RUM R+05 (x2)
134515 +12 2478  RI1FJL ON3RUM JO10 (x6)
134800  -9  480  ON3RUM RI1FJL +00
134815 +12 2445  RI1FJL ON3RUM R+00
134830  -8  480  ON3RUM RI1FJL +00
134845 +14 2445  RI1FJL ON3RUM R+00
141115  +0 1623  VU2KPH ON3RUM JO10

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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