PA3GCU — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Netherlands Most frequent locator attributed to this token: JO11

Receiver-side FT8 activity involving PA3GCU, decoded by SO8OO in southeastern Poland. 88 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 14 UTC dates in the available aggregate history. Observed between 2026-07-14 and 2026-09-15.

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 88 FT8 messages attributed to PA3GCU as the transmitting token by decoded message structure across 14 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (44%), followed by 10 m (40%) and 40 m (16%). Most decodes (64%) fell within the six-hour window 04:00-10:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -17 dB.

Overview

88
Messages attributed
14
UTC dates decoded
27
Active 15-min windows
-17 dB
Estimated median S/N

Bands

40m · 14 20m · 39 10m · 35
First attributed message: 2026-07-14
Last attributed message: 2026-09-15 04:54 UTC

Observed FT8 message patterns

Attributed sample
88 messages
Active dates
14 UTC dates
Estimated median S/N
-17 dB
Estimated 10th-90th percentile
-23 to -8 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 52, moderate (-15 to -9 dB) 27, strong (≥ -8 dB) 9.

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 PA3GCU 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 PA3GCU

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
JO11 · 51 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,331 km (approx.)
Last such locator decoded
2026-09-15 04:47 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 UTCBandPA3GCU S/NCounterpartCounterpart S/NMsgsCapture
09-15 04:53 40m -9 / - WA4TED - / -23 4 Partial capture
08-27 06:23 40m -7 / - PV8AJ - / -13 3 ✓ Closing fragment
08-16 19:00 10m - / 0 IK4LZH -4 / - 3 ✓ Closing fragment
08-16 18:57 10m - / -6 SM4TIW -12 / - 2 ✓ Closing fragment
08-13 12:18 10m - / -19 ON1JP -22 / - 2 Partial capture
08-12 13:32 10m -19 / - SN9AF - / +9 4 ✓ Closing fragment
08-12 13:13 10m -18 / - ER3CT - / - 2 Partial capture
08-12 13:09 10m -20 / - EG5MYC - / -14 6 Partial capture
08-12 06:19 10m - / -13 RA6LDX -4 / - 2 ✓ Closing fragment
08-08 08:09 20m -14 / - VK6BAD - / - 2 Partial capture
08-08 08:02 20m -17 / - OK2CNI - / -4 3 ✓ Closing fragment
08-08 08:00 20m -14 / - CR7BRV -12 / -2 4 ✓ Closing observed
08-08 07:58 20m -5 / - EH1SGG - / - 3 Partial capture
08-01 10:50 20m -14 / - EI9KF - / -17 3 ✓ Closing fragment
07-25 06:01 20m -15 / - EA3GXK - / -25 3 Partial capture
07-23 06:32 20m -14 / - TI5RR - / -11 2 Partial capture
07-23 06:08 20m -20 / -11 RD3FY -2 / -9 3 ✓ Full exchange observed
07-23 06:06 20m - / +5 IK4TVP -16 / - 2 ✓ Closing fragment
07-23 05:57 20m - / -8 R5AV -8 / - 2 ✓ Closing fragment
07-14 15:41 20m - / -8 IU2LZV -19 / - 3 ✓ Closing fragment
07-14 15:41 20m -20 / - OE9GWV -5 / -6 5 ✓ Closing observed
07-04 05:31 20m - / -17 SV2HTW +5 / - 4 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
062130 -11 1237  <...> PA3GCU JO11
062315  -9 1237  PV8AJ PA3GCU JO11 (x3)
062815 -11 1237  5A1AL PA3GCU 73
044430 -12  888  CQ PA3GCU JO11 (x5)
045300 -11  888  WA4TED PA3GCU -23 (x4)
10m 
UTC    dB Audio  Message
121900 -20 1778  CQ PA3GCU JO11
121930 -22 1778  LY2EW PA3GCU -08
121945 -21 1777  PA3GCU ON1JP -19
062945 -24 1780  CQ PA3GCU JO11 (x4)
185745 -12  888  PA3GCU SM4TIW R-06 (x2)
190015  -5  488  PA3GCU IK4LZH JN54 (x3)
191245 -22 2029  PA3GCU M6GPH IO83
192700 -21 2027  CQ PA3GCU JO11 (x2)
20m 
UTC    dB Audio  Message
075845  -8  312  EH1SGG PA3GCU JO11 (x2)
080030 -11 1312  CQ PA3GCU JO11                        a1
080045 -12  729  PA3GCU CR7BRV IM58
080100 -14 1467  CQ PA3GCU JO11
080115 -12  729  PA3GCU CR7BRV IM58
080130 -12  312  PA3GCU EH1SGG -17
080130  -8 1468  CR7BRV PA3GCU -02 (x2)
080230 -20 1468  OK2CNI PA3GCU -04 (x3)
080930 -18 1468  VK6BAD PA3GCU JO11 (x2)
090600 -13 1446  YV5JLO PA3GCU JO11

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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