ON4CAS — 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 ON4CAS, decoded by SO8OO in southeastern Poland. 992 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 32 UTC dates in the available aggregate history. Observed between 2026-07-06 and 2026-11-04.

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 992 FT8 messages attributed to ON4CAS as the transmitting token by decoded message structure across 32 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (64%), followed by 40 m (34%) and 20 m (2%). Most decodes (82%) fell within the six-hour window 14:00-20:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.

Overview

992
Messages attributed
32
UTC dates decoded
133
Active 15-min windows
-12 dB
Estimated median S/N

Bands

80m · 637 40m · 333 20m · 22
First attributed message: 2026-07-06
Last attributed message: 2026-11-04 07:42 UTC

Observed FT8 message patterns

Attributed sample
992 messages
Active dates
32 UTC dates
Estimated median S/N
-12 dB
Estimated 10th-90th percentile
-19 to -4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 289, moderate (-15 to -9 dB) 421, strong (≥ -8 dB) 282.

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 ON4CAS 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 ON4CAS

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 · 687 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,192 km (approx.)
Last such locator decoded
2026-11-04 07:42 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 UTCBandON4CAS S/NCounterpartCounterpart S/NMsgsCapture
11-02 08:12 40m -19 / -1 OK5AG -9 / - 4 ✓ Closing observed
11-02 08:10 40m -17 / -8 OE3CJB -11 / - 4 ✓ Closing observed
11-02 08:09 40m - / +7 GJ0KYZ -11 / - 2 ✓ Closing fragment
10-30 08:02 40m -17 / - SP3BPC -4 / +3 3 ✓ Closing observed
10-30 07:52 40m -13 / +8 GJ0KYZ -6 / +7 6 ✓ Full exchange observed
10-29 08:20 40m - / -14 HG5OGI -7 / - 3 ✓ Closing fragment
10-29 08:15 40m - / -8 HA8LD +8 / - 4 ✓ Closing fragment
10-29 08:12 40m - / +5 DF0NN -18 / - 3 ✓ Closing fragment
10-29 08:10 40m - / - G4NAQ -15 / - 2 ✓ Closing fragment
10-29 08:04 40m -20 / -1 OE8PIT +15 / - 4 ✓ Closing observed
10-29 08:01 40m - / - RA6OY -7 / - 5 Partial capture
10-27 06:56 40m -22 / -7 OK2FKU +2 / - 6 ✓ Full exchange observed
10-26 07:56 40m - / - SQ8V -1 / - 2 Partial capture
10-23 07:40 40m - / -18 UR5TOC +1 / - 7 ✓ Closing fragment
10-22 07:29 40m -11 / - ON3MOH -12 / -12 2 ✓ Closing observed
10-18 08:51 40m - / -5 ON3MOH -19 / - 2 Partial capture
10-18 08:03 40m - / -11 PD7LB -17 / - 2 ✓ Closing fragment
10-18 07:57 40m - / -12 SP6PST 0 / - 2 Partial capture
10-18 07:28 40m - / -7 DG4FFF -5 / - 3 ✓ Closing fragment
10-18 07:16 40m - / -2 DG1ASD -5 / - 5 ✓ Closing fragment
10-18 07:12 40m - / - OK3MB -8 / - 2 ✓ Closing fragment
10-18 07:10 40m - / -11 SP6TT -14 / - 3 ✓ Closing fragment
10-18 07:08 40m - / +5 DH1OME -4 / - 3 ✓ Closing fragment
10-18 07:01 40m - / +5 GJ0KYZ -7 / - 2 ✓ Closing fragment
10-18 06:29 80m - / 0 DD8BA +1 / - 2 Partial capture
10-18 06:28 80m - / - F4GUK -3 / - 2 Partial capture
10-18 06:28 80m - / - 2E0FHM -13 / - 2 Partial capture
10-18 06:26 80m - / +9 GB5SJ -4 / - 2 Partial capture
10-18 06:25 80m - / -4 F1IQH -9 / - 2 ✓ Closing fragment
10-18 06:20 80m -10 / - G0WZM - / -5 2 Partial capture
10-16 06:57 40m -14 / - N2LEE - / -14 2 Partial capture
10-16 06:48 40m - / - R1BDX -5 / - 8 Partial capture
10-16 06:32 80m - / -2 F5LSU -6 / - 4 ✓ Closing fragment
10-16 06:23 80m - / -13 UF2F -2 / - 8 Partial capture
10-15 19:43 80m -15 / - DO2SGW - / -17 2 Partial capture
10-15 19:32 80m - / -18 DO9POL -10 / - 2 Partial capture
10-15 19:30 80m - / -5 DK9BM +4 / - 2 ✓ Closing fragment
10-15 19:25 80m - / - M7KEV -18 / - 5 Partial capture
10-15 19:19 80m -3 / -3 DM1SV -4 / - 5 ✓ Full exchange observed
10-15 19:19 80m - / - DB9LG 0 / - 8 Partial capture
10-15 19:18 80m - / - RX3ASQ -7 / - 2 Partial capture
10-15 19:17 80m - / - ON4MAP -13 / - 2 Partial capture
10-15 19:14 80m -7 / - MM0ULL - / +5 2 ✓ Closing fragment
10-15 19:13 80m - / - RX3ASQ -8 / - 4 Partial capture
10-15 19:04 80m - / - RX3ASQ -4 / - 4 Partial capture
10-15 19:00 80m - / - RX3ASQ -6 / - 2 Partial capture
10-15 18:58 80m - / - IK1AIL -9 / - 4 Partial capture
10-15 18:55 80m -15 / - M7FSE - / - 2 Partial capture
10-15 06:59 80m - / -8 DL1UDO -19 / - 2 ✓ Closing fragment
10-14 19:51 80m - / -20 R5AV +6 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
081100 -11 2391  ON4CAS OE3CJB R-08
081115 -17 2390  OE3CJB ON4CAS RR73
081130 -14 2391  ON4CAS OE3CJB 73
081200 -16 2333  ON4CAS OK5AG JN79 (x2)
081245 -19 2390  OK5AG ON4CAS RR73
081300  +3 2559  ON4CAS OK5AG 73
081445 -20 2391  CQ ON4CAS JO21                        a1 (x5)
082900 -19 1796  ON4CAS OP4F JO21
073130 -20 1059  ON4CAS M7MJW R-19
074245 -20 1058  CQ ON4CAS JO21                        a1
80m 
UTC    dB Audio  Message
062045 -10 2677  G0WZM ON4CAS JO21 (x2)
062215 -13 2676  CQ ON4CAS JO21                        a1 (x2)
062500  -9 2676  ON4CAS F1IQH R-04 (x2)
062600  -3 2675  ON4CAS GB5SJ IO81 (x2)
062745 -12 2676  CQ ON4CAS JO21
062800 -13 1055  ON4CAS 2E0FHM IO92
062830  -2  440  ON4CAS F4GUK JN18
062830 -13 1055  ON4CAS 2E0FHM IO92
062900  -4  440  ON4CAS F4GUK JN18
062930  -2 2757  ON4CAS DD8BA JO42 (x2)
20m 
UTC    dB Audio  Message
143030  -8 1706  CQ ON4CAS JO21
143045 -11 2040  ON4CAS RW4HBD LO53
143100  -9 1705  OH2GT ON4CAS -12 (x3)
143300  -8 1705  CQ ON4CAS JO21 (x6)
144045 -17 1268  <...> ON4CAS R+08 (x3)
144900 -24 1887  CQ ON4CAS JO21

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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