PY4LX — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Brazil Most frequent locator attributed to this token: GG78

Receiver-side FT8 activity involving PY4LX, decoded by SO8OO in southeastern Poland. 75 FT8 messages attributed to this token as transmitter, on 10m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-07-17.

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 75 FT8 messages attributed to PY4LX as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (100%). Most decodes (61%) 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

75
Messages attributed
6
UTC dates decoded
13
Active 15-min windows
-12 dB
Estimated median S/N

Bands

10m · 75
First attributed message: 2026-06-11
Last attributed message: 2026-07-17 14:38 UTC

Observed FT8 message patterns

Attributed sample
75 messages
Active dates
6 UTC dates
Estimated median S/N
-12 dB
Estimated 10th-90th percentile
-22 to 0 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 32, moderate (-15 to -9 dB) 7, strong (≥ -8 dB) 36.

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 PY4LX in decoded directed-looking exchanges:

Most frequent locator attributed to PY4LX

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
GG78 · 28 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
10,291 km (approx.)
Last such locator decoded
2026-07-17 14:38 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 UTCBandPY4LX S/NCounterpartCounterpart S/NMsgsCapture
08-23 02:04 40m - / -13 RA3TKS -4 / - 2 Partial capture
08-19 23:39 40m - / -16 MM0KQC -18 / - 2 ✓ Closing fragment
08-19 23:38 40m - / - IK4LZH +10 / - 3 Partial capture
08-16 23:14 40m - / - S56KO -24 / - 2 ✓ Closing fragment
08-11 23:21 40m - / -11 OK1XD -10 / - 4 ✓ Closing fragment
08-02 21:27 40m - / -16 UA3SNB -3 / - 2 ✓ Closing fragment
07-25 05:30 40m - / -13 DL3MIB -9 / - 3 ✓ Closing fragment
07-24 00:05 40m - / - EA3GQA -16 / - 9 Partial capture
07-22 01:22 40m - / -15 RA3TKS -14 / - 2 ✓ Closing fragment
07-21 23:51 40m - / -14 ON7NQ -2 / - 2 ✓ Closing fragment
07-21 21:26 40m - / -15 OZ5AGJ 0 / - 2 ✓ Closing fragment
07-20 01:01 40m - / -12 R8FB -13 / - 3 Partial capture
07-20 00:58 40m - / -25 TF3VS -18 / - 3 ✓ Closing fragment
07-20 00:48 40m - / -20 F5HNQ -11 / - 3 ✓ Closing fragment
07-20 00:03 40m - / - F4MTT -18 / - 2 Partial capture
07-19 22:38 40m - / - PA7D -16 / - 2 Partial capture
07-19 22:35 40m - / - OO0O -10 / - 7 Partial capture
07-19 22:34 40m - / - PA7D -17 / - 3 Partial capture
07-19 21:09 40m - / - HB9AKB -22 / - 3 Partial capture
07-17 22:25 40m - / -24 <...> -16 / - 3 Partial capture
07-17 21:34 40m - / -25 GM4CXM -8 / - 2 ✓ Closing fragment
07-17 14:49 10m - / -4 RA6BL -15 / - 2 Partial capture
07-15 21:59 40m - / - DL1IP -9 / - 3 ✓ Closing fragment
07-15 21:48 40m - / -15 PA1PXL -17 / - 2 ✓ Closing fragment
07-15 21:46 40m - / - DL3KVR -1 / - 3 Partial capture
07-15 21:10 40m - / -20 DF3IS -7 / - 4 ✓ Closing fragment
07-14 22:31 40m - / - IU1JFI -8 / - 8 Partial capture
07-14 22:23 40m - / - F1IQH -10 / - 2 Partial capture
07-06 23:03 40m - / - IV3KQE -13 / - 3 Partial capture
07-06 23:03 40m - / - UR4QWW -18 / - 3 Partial capture
07-06 22:52 40m - / -14 PC2J -16 / - 2 Partial capture
07-06 22:45 40m - / - PC2J -18 / - 2 Partial capture
07-06 22:09 40m - / -10 DL1RB -10 / - 8 ✓ Closing fragment
07-06 22:01 40m - / -22 ON4LUC -12 / - 3 ✓ Closing fragment
06-29 21:34 40m - / -24 G4DBW -16 / - 2 ✓ Closing fragment
06-29 19:38 10m -4 / - RT2F - / -13 3 Partial capture
06-26 21:45 40m - / -11 SP6JIU +10 / - 2 ✓ Closing fragment
06-25 21:40 40m - / -22 UA4FKT +9 / - 3 ✓ Closing fragment
06-25 21:02 40m - / - RO2T -4 / - 2 Partial capture
06-25 20:50 40m - / -16 OE3PBS -2 / - 2 ✓ Closing fragment
06-25 19:52 10m -5 / - R3VA - / -6 2 Partial capture
06-25 19:47 10m -10 / +10 HB0/OI5AY -15 / - 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
230400 -10 1539  PY4LX GB64MOD -09
232145 -12 1877  PY4LX OK1XD -11 (x4)
231415 -23 1723  PY4LX S56KO RRR (x2)
233845  +8  438  PY4LX IK4LZH JN54 (x2)
233945 -15 1780  PY4LX MM0KQC -16
233945 +14  438  PY4LX IK4LZH JN54
234015 -20 1781  PY4LX MM0KQC RR73
234415 -13 1611  PY4LX M6PVT JO02
020430  -5 2805  PY4LX RA3TKS -13 (x2)
10m 
UTC    dB Audio  Message
194645 -12 3041  <...> PY4LX GG78
194715 -10 3041  <HB0/OI5AY> PY4LX GG78
194730 -15  719  PY4LX HB0/OI5AY +10
195015  -5 3035  ER3CT PY4LX GG78
195215  -4 3033  R3VA PY4LX R-06 (x2)
193800  -3 3030  RT2F PY4LX GG78 (x3)
143830  -7 2883  PY7XC PY4LX GG78
144915 -15 1526  PY4LX RA6BL KN95 (x2)
190930  -9  767  PY4LX DO1FKM JN49
191230 -17 2003  PY4LX DK8EE JO41

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.

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