ON4CFC — 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 ON4CFC, decoded by SO8OO in southeastern Poland. 1,258 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 41 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-28.

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 1,258 FT8 messages attributed to ON4CFC as the transmitting token by decoded message structure across 41 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (73%), followed by 80 m (17%) and 20 m (5%). The busiest six-hour window was 16:00-22:00 UTC, containing 45% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

1,258
Messages attributed
41
UTC dates decoded
152
Active 15-min windows
-8 dB
Estimated median S/N

Bands

80m · 208 60m · 40 40m · 924 20m · 64 10m · 22
First attributed message: 2026-06-06
Last attributed message: 2026-10-28 17:27 UTC

Observed FT8 message patterns

Attributed sample
1,258 messages
Active dates
41 UTC dates
Estimated median S/N
-8 dB
Estimated 10th-90th percentile
-17.3 to 0 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 193, moderate (-15 to -9 dB) 423, strong (≥ -8 dB) 642.

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 ON4CFC 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 ON4CFC

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 · 746 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,192 km (approx.)
Last such locator decoded
2026-10-28 17:27 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 UTCBandON4CFC S/NCounterpartCounterpart S/NMsgsCapture
10-28 17:26 40m +3 / - ON7CFX - / - 3 Partial capture
10-28 17:25 80m - / - ON7CL -18 / - 2 Partial capture
10-27 02:21 80m -10 / -13 EC3A -11 / +1 6 ✓ Full exchange observed
10-27 02:20 80m -14 / -12 ON4MAP -11 / -11 5 ✓ Full exchange observed
10-27 02:19 80m -18 / - VE2CKW - / - 2 Partial capture
10-26 21:02 60m -16 / - S52R - / - 2 Partial capture
10-26 20:59 60m -19 / - 4X5JK - / - 2 Partial capture
10-26 20:56 60m -22 / -18 IW9FRA -18 / -9 6 ✓ Full exchange observed
10-26 20:51 60m -17 / -13 9A7BB -19 / - 5 ✓ Closing observed
10-26 20:47 60m -16 / - OE6JCG - / -5 2 ✓ Closing fragment
10-26 20:42 60m -16 / - EA4D - / +3 2 ✓ Closing fragment
10-26 20:40 60m -14 / - HA7TM -18 / - 3 ✓ Closing observed
10-26 20:37 60m -19 / - EB3JT - / +9 2 ✓ Closing fragment
10-26 20:36 60m -19 / - OM8YZ - / -18 4 Partial capture
10-26 17:15 60m -8 / -11 DB3TF -6 / -18 6 ✓ Full exchange observed
10-26 17:14 60m -13 / -5 DL2VN -6 / - 3 ✓ Closing observed
10-26 17:08 60m -9 / -9 LX1DA +8 / - 5 ✓ Full exchange observed
10-26 17:07 60m -12 / - ON4MGV -16 / 0 2 ✓ Closing observed
10-26 17:04 60m - / -8 OE5DML -2 / - 3 ✓ Closing fragment
10-26 17:04 60m - / +4 SP2EWQ +8 / - 3 ✓ Closing fragment
10-26 17:03 60m - / -3 PA7F +1 / - 2 ✓ Closing fragment
10-26 17:01 60m - / -13 PE1NPS -6 / - 3 ✓ Closing fragment
10-26 15:42 60m - / +1 DL1LP -9 / - 2 Partial capture
10-26 15:25 60m - / -10 DD6ZV +7 / - 3 ✓ Closing fragment
10-26 15:12 40m - / -9 DL1PAB -12 / - 4 ✓ Closing fragment
10-26 15:08 40m -12 / -11 DM5CF -3 / -6 5 ✓ Full exchange observed
10-26 14:58 40m -11 / -10 IQ4JO -18 / -22 2 Partial capture
10-26 14:55 40m - / -2 DJ0WJ -2 / - 3 ✓ Closing fragment
10-26 14:46 40m - / -7 DJ8EW -6 / - 2 ✓ Closing fragment
10-26 14:44 40m - / -2 DF3JR -10 / - 2 ✓ Closing fragment
10-23 04:02 80m -6 / - DO1OAS -1 / -8 5 ✓ Closing observed
10-23 04:01 80m -2 / +1 DL5MRK -4 / -1 4 ✓ Full exchange observed
10-23 03:55 80m - / -3 HA5UK +12 / - 2 ✓ Closing fragment
10-23 03:52 80m -5 / -15 S50XX +8 / 0 4 ✓ Full exchange observed
10-22 22:02 80m -18 / - ON6WDL - / - 2 Partial capture
10-22 22:00 80m -8 / - ON1EHF - / -1 3 ✓ Closing fragment
10-22 21:54 80m -4 / -8 DO9SAM +6 / 0 4 ✓ Full exchange observed
10-22 21:52 80m -8 / -10 SM7HZK 0 / +1 5 ✓ Full exchange observed
10-22 21:47 80m -11 / - M9XPN - / -14 3 Partial capture
10-22 21:44 80m -13 / - SV9MBH - / -10 4 ✓ Closing fragment
10-22 21:40 80m -10 / -11 ON3VZ 0 / -12 5 ✓ Full exchange observed
10-22 21:39 80m -15 / -12 SP9HPI +6 / - 4 ✓ Closing observed
10-22 21:35 80m -10 / -20 OE3LQA +7 / +2 5 ✓ Full exchange observed
10-22 21:34 80m - / - ON3VZ -5 / - 2 Partial capture
10-22 21:30 80m -8 / -13 ON1BH +4 / -8 4 ✓ Full exchange observed
10-22 21:30 80m -12 / -18 E70SZ +12 / -3 5 ✓ Full exchange observed
10-22 21:23 80m -10 / -12 DG5PW -3 / -1 5 ✓ Full exchange observed
10-22 21:23 80m -8 / - HB3YBG +9 / +8 4 ✓ Closing observed
10-22 21:21 80m - / - ON3VZ -2 / - 3 Partial capture
10-22 21:21 80m - / -4 DF8RU +5 / - 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
150730 -11  630  DL6YEU ON4CFC -03
150830 -13  630  CQ ON4CFC JO21
150845  -3  515  ON4CFC DM5CF JO60
150900 -12  630  DM5CF ON4CFC -06
150915  +0  515  ON4CFC DM5CF R-11
150930 -11  631  DM5CF ON4CFC RR73
150945  -7  515  ON4CFC DM5CF 73
151245 -12  973  ON4CFC DL1PAB R-09 (x4)
151700 -15  630  CQ ON4CFC JO21
172600  +0  469  ON7CFX ON4CFC JO21 (x3)
80m 
UTC    dB Audio  Message
022200 -11 2155  CQ ON4CFC JO21
022215 -11 1912  ON4CFC EC3A -12
022230  -9 2155  EC3A ON4CFC R+01 (x2)
022315 -11 1911  ON4CFC EC3A RR73
022330  -9 2155  EC3A ON4CFC 73
022400 -19 2155  CQ ON4CFC JO21 (x6)
172415  -6  433  ON4CFC ON7CFX RR73
172545 -17 1478  ON4CFC ON7CL JO20 (x2)
60m 
UTC    dB Audio  Message
205115 -14 1629  9A7BB ON4CFC JO21 (x2)
205230 -16 2059  ON4CFC 9A7BB -13 (x2)
205315 -21 1629  9A7BB ON4CFC 73
205615 -22 1629  IW9FRA ON4CFC JO21
205630 -17 1020  ON4CFC IW9FRA -18
205645 -21 1630  IW9FRA ON4CFC R-09 (x2)
205800 -18 1019  ON4CFC IW9FRA RR73
205815 -23 1629  IW9FRA ON4CFC 73
205930 -18 1629  4X5JK ON4CFC JO21 (x2)
210230 -14 1629  S52R ON4CFC JO21 (x2)

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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