SM0CXS — 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: Sweden Most frequent locator attributed to this token: JO99

Receiver-side FT8 activity involving SM0CXS, decoded by SO8OO in southeastern Poland. 1,499 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, across 41 UTC dates in the available aggregate history. Observed between 2026-09-08 and 2026-11-05.

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 1,499 FT8 messages attributed to SM0CXS as the transmitting token by decoded message structure across 41 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (60%), followed by 80 m (24%) and 40 m (16%). Most decodes (80%) fell within the six-hour window 14:00-20:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (86%); the estimated median was -0.1 dB.

Overview

1,499
Messages attributed
41
UTC dates decoded
209
Active 15-min windows
-0.1 dB
Estimated median S/N

Bands

160m · 899 80m · 366 40m · 234
First attributed message: 2026-09-08
Last attributed message: 2026-11-05 18:05 UTC

Observed FT8 message patterns

Attributed sample
1,499 messages
Active dates
41 UTC dates
Estimated median S/N
-0.1 dB
Estimated 10th-90th percentile
-10.2 to +8.3 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 47, moderate (-15 to -9 dB) 166, strong (≥ -8 dB) 1,286.

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 SM0CXS 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 SM0CXS

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
JO99 · 724 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,078 km (approx.)
Last such locator decoded
2026-11-05 18:04 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 UTCBandSM0CXS S/NCounterpartCounterpart S/NMsgsCapture
11-05 18:04 160m +6 / -10 RK3IT -11 / -5 4 ✓ Full exchange observed
11-03 19:36 80m +7 / 0 R8XF/P -13 / -3 2 Partial capture
11-03 18:49 160m +6 / - RK3AW/P - / - 3 Partial capture
11-01 20:26 160m 0 / - JH4JNG - / -25 5 ✓ Closing fragment
11-01 20:25 160m +4 / - DO5PY -12 / -19 3 ✓ Closing observed
11-01 20:21 160m -2 / - JN4MIV - / -13 2 ✓ Closing fragment
11-01 20:20 160m -2 / - JA7JWF - / -12 2 ✓ Closing fragment
11-01 20:18 160m -5 / - JA0DAI - / -13 2 ✓ Closing fragment
11-01 20:17 160m +1 / - JH4JNG - / -20 3 Partial capture
11-01 20:15 160m 0 / - JA1QWT - / -21 4 Partial capture
11-01 20:14 160m -3 / - JA6LCJ - / -19 2 ✓ Closing fragment
11-01 20:12 160m +5 / - JA1QJI - / -21 3 ✓ Closing fragment
11-01 20:11 160m +6 / - JH4ADV - / -10 2 ✓ Closing fragment
11-01 20:10 160m -5 / - JA9PPC - / -19 3 ✓ Closing fragment
11-01 20:09 160m +1 / - JA9RRH - / -22 2 ✓ Closing fragment
11-01 20:08 160m - / - DK1MBY -14 / - 2 Partial capture
11-01 20:07 160m -5 / - JH4IFF - / -7 3 ✓ Closing fragment
11-01 20:06 160m -2 / - JI4WAO - / -10 2 ✓ Closing fragment
11-01 20:05 160m -5 / - VK6IR - / -11 3 ✓ Closing fragment
11-01 19:59 160m 0 / - EC4TR - / -14 2 ✓ Closing fragment
11-01 19:56 160m +3 / - CT1BWU - / -16 3 ✓ Closing fragment
11-01 19:55 160m 0 / - JR1AIB - / -25 2 ✓ Closing fragment
11-01 19:54 160m -8 / -6 R2AX -20 / -8 3 ✓ Full exchange observed
11-01 19:22 160m -7 / - UR4UT - / -11 5 ✓ Closing fragment
11-01 19:20 160m -4 / -16 OK5LR -4 / -15 5 ✓ Full exchange observed
11-01 19:16 160m +1 / - JE1CCD - / -18 3 Partial capture
11-01 19:15 160m +2 / - EC4TR - / -16 2 ✓ Closing fragment
11-01 19:14 160m +4 / - JE1BMJ - / -18 2 ✓ Closing fragment
11-01 19:11 160m +6 / - JI1LET - / -16 3 ✓ Closing fragment
11-01 19:10 160m +5 / - JA0MVW - / -19 2 ✓ Closing fragment
11-01 19:08 160m +8 / - VK6EI - / -15 4 ✓ Closing fragment
11-01 19:04 160m -2 / - JM1JZN - / - 2 Partial capture
10-31 14:33 40m +2 / - EY7BP - / - 4 Partial capture
10-31 14:30 40m +1 / - ON7AMI -13 / -8 6 ✓ Closing observed
10-31 14:29 40m +3 / - R3MBB - / -21 2 ✓ Closing fragment
10-31 14:28 40m 0 / - F3CJ - / -17 2 ✓ Closing fragment
10-31 14:27 40m +2 / +2 R5AV -6 / - 4 ✓ Full exchange observed
10-31 14:25 40m +4 / - 7K4AIS - / -17 2 ✓ Closing fragment
10-31 14:24 40m +2 / - RA0AEP - / -17 2 ✓ Closing fragment
10-31 14:23 40m 0 / - BH4FPS - / -21 2 ✓ Closing fragment
10-30 20:21 80m +5 / - YU65AEC - / -10 2 Partial capture
10-30 14:09 80m +3 / - SP9TBT/5 - / - 4 Partial capture
10-29 18:03 160m 0 / -2 RU3FM -8 / - 5 ✓ Full exchange observed
10-29 18:02 160m -3 / - UZ5CA - / -12 2 ✓ Closing fragment
10-29 18:01 160m -2 / - UA4QK - / -6 2 ✓ Closing fragment
10-29 15:08 160m -8 / - XX9TXN - / - 5 Partial capture
10-29 15:05 160m -8 / - RK0UN - / -11 5 ✓ Closing fragment
10-29 14:25 80m -10 / - JA1NGD - / -17 2 ✓ Closing fragment
10-29 14:24 80m -12 / - JA1DMX - / -11 2 ✓ Closing fragment
10-29 14:21 80m -20 / -19 IQ4JO -12 / -18 7 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

160m 
UTC    dB Audio  Message
202515  +2 2235  DO5PY SM0CXS -19 (x2)
202615  +1 2235  JH4JNG SM0CXS -25 (x5)
184915  +7 2299  RK3AW/P SM0CXS JO99 (x3)
185045 +11 2282  DK80NDS SM0CXS JO99
180445  +3 2078  RK3IT SM0CXS JO99
180500 -11 2533  SM0CXS RK3IT -10
180515  +8 2078  RK3IT SM0CXS R-05 (x2)
80m 
UTC    dB Audio  Message
142400 -11 2107  JA1DMX SM0CXS -11 (x2)
142500 -10 2107  JA1NGD SM0CXS -17 (x2)
140830  +1 1607  S5/M0MPM SM0CXS JO99
140900  +5 1534  SP9TBT/5 SM0CXS JO99 (x3)
141030  +5 2408  SP5DFK/QRP SM0CXS JO99
141100  +5 2375  SP9TBT/5 SM0CXS JO99
202145  +2 2434  YU65AEC SM0CXS JO99 (x2)
193615 -13 1608  SM0CXS R8XF/P +00
193630  +7 2141  R8XF/P SM0CXS R-03
193715  -2 1502  SM0CXS SP1EG JO73
40m 
UTC    dB Audio  Message
142815  +1 2448  F3CJ SM0CXS -17 (x2)
142900 -20 1504  SM0CXS DL1AWD JO51
142915  +4 2448  R3MBB SM0CXS -21 (x2)
143000 -14 2450  SM0CXS ON7AMI JO10 (x3)
143115  +3 2448  ON7AMI SM0CXS -08 (x2)
143200 -19 2450  SM0CXS ON7AMI 73
143330  +2 2448  EY7BP SM0CXS JO99 (x4)

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

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee