ON3MCA — 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 ON3MCA, decoded by SO8OO in southeastern Poland. 82 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-09-13.

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 82 FT8 messages attributed to ON3MCA as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (95%), followed by 40 m (5%). Most decodes (77%) fell within the six-hour window 03:00-09:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -14 dB.

Overview

82
Messages attributed
8
UTC dates decoded
19
Active 15-min windows
-14 dB
Estimated median S/N

Bands

40m · 4 20m · 78
First attributed message: 2026-06-09
Last attributed message: 2026-09-13 05:23 UTC

Observed FT8 message patterns

Attributed sample
82 messages
Active dates
8 UTC dates
Estimated median S/N
-14 dB
Estimated 10th-90th percentile
-22 to 0 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 33, moderate (-15 to -9 dB) 25, strong (≥ -8 dB) 24.

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 ON3MCA 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 ON3MCA

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 · 37 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,335 km (approx.)
Last such locator decoded
2026-09-13 05:23 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 UTCBandON3MCA S/NCounterpartCounterpart S/NMsgsCapture
09-13 05:21 40m -4 / - IK4RVY - / - 3 Partial capture
08-30 07:02 20m -16 / - EA4HEW -10 / -18 3 ✓ Closing observed
08-30 06:58 20m -14 / -20 E70SZ -3 / -14 11 ✓ Full exchange observed
08-30 06:54 20m -14 / - UT7UJ - / -2 2 ✓ Closing fragment
08-30 06:53 20m -13 / - R1BED - / -9 2 ✓ Closing fragment
08-27 08:03 20m +2 / - CT7AUT - / -6 2 ✓ Closing fragment
08-27 06:49 20m -2 / - LZ7VV - / - 2 Partial capture
08-27 06:44 20m -3 / - EA4CUO - / -15 6 Partial capture
08-27 06:41 20m +1 / - 9A5E - / -16 2 ✓ Closing fragment
08-27 06:39 20m -10 / - SP6TGI - / - 2 Partial capture
08-25 06:17 20m -16 / -2 RN6MA +8 / - 3 ✓ Closing observed
08-24 13:07 20m - / -1 F5HNQ -3 / - 2 ✓ Closing fragment
08-23 15:52 20m -13 / - PD4RJ - / -1 3 ✓ Closing fragment
08-23 15:48 20m -17 / - UR5WCS - / -15 5 Partial capture
08-23 15:43 20m - / -19 RA9LL +16 / - 2 Partial capture
08-23 15:27 20m - / -3 SA3SHN -3 / - 3 ✓ Closing fragment
08-23 14:59 20m -18 / - <...> - / -21 3 Partial capture
08-23 08:54 20m -7 / - S55X - / - 2 Partial capture
08-23 08:47 20m -11 / -15 UA3VVA +9 / - 6 ✓ Closing observed
08-22 03:40 20m -24 / - EC3A - / -16 2 Partial capture
08-22 03:18 20m -18 / -12 KB2ELA -22 / -4 3 ✓ Full exchange observed
08-22 02:54 20m - / -9 YO4NF -8 / - 2 ✓ Closing fragment
08-22 02:53 20m - / -13 UN0GY -6 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
052130  -8 2541  IK4RVY ON3MCA JO10 (x3)
052330  -9 2541  W9US ON3MCA JO10
20m 
UTC    dB Audio  Message
065915  -6 1680  ON3MCA E70SZ R-20
065930 -18 1680  E70SZ ON3MCA RR73
065945  -2 1680  ON3MCA E70SZ R-20 (x2)
070030 -11 1680  CQ ON3MCA JO10
070045  -2 1680  ON3MCA E70SZ R-20
070100 -16 1680  CQ ON3MCA JO10
070115  -4 1680  ON3MCA E70SZ R-20 (x2)
070200 -21 1680  EA4HEW ON3MCA R-18
070215 -10 1681  ON3MCA EA4HEW RR73
070230 -12 1680  EA4HEW ON3MCA 73
070300 -10 1681  E70SZ ON3MCA RR73 (x2)
070730 -14 1681  HA0NDN ON3MCA 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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