PA4DDW — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Netherlands Most frequent locator attributed to this token: JO33

Receiver-side FT8 activity involving PA4DDW, decoded by SO8OO in southeastern Poland. 29 FT8 messages attributed to this token as transmitter, on 20m, across 11 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-08-27.

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 29 FT8 messages attributed to PA4DDW as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Most decodes (72%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -16 dB.

Overview

29
Messages attributed
11
UTC dates decoded
16
Active 15-min windows
-16 dB
Estimated median S/N

Bands

20m · 29
First attributed message: 2026-06-11
Last attributed message: 2026-08-27 16:05 UTC

Observed FT8 message patterns

Attributed sample
29 messages
Active dates
11 UTC dates
Estimated median S/N
-16 dB
Estimated 10th-90th percentile
-23 to -9 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 15, moderate (-15 to -9 dB) 12, strong (≥ -8 dB) 2.

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 PA4DDW 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 PA4DDW

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
JO33 · 21 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,091 km (approx.)
Last such locator decoded
2026-08-27 16:05 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 UTCBandPA4DDW S/NCounterpartCounterpart S/NMsgsCapture
08-26 20:21 20m -6 / -23 IK4RVY 0 / -15 7 ✓ Full exchange observed
08-26 20:19 20m -11 / -9 F4LHZ/P -13 / - 2 Partial capture
08-26 20:16 20m -12 / - 9A3BMK/P - / - 2 Partial capture
08-26 20:07 20m -18 / - RI1FJL - / - 2 Partial capture
08-16 06:11 20m - / -17 E75C -16 / - 2 ✓ Closing fragment
08-11 18:06 20m - / -13 EA1FCS -12 / - 8 ✓ Closing fragment
08-07 19:57 20m - / -20 UN7PNF -17 / - 3 ✓ Closing fragment
08-01 19:59 20m -19 / - 3A2MW - / - 4 ✓ Closing fragment
07-18 06:09 20m -21 / - VE2OPR - / - 3 Partial capture
07-18 04:52 20m - / -6 SV5BYP -19 / - 2 Partial capture
07-16 20:19 20m -19 / -14 CR7BRV -6 / -9 3 Partial capture
07-16 19:55 20m - / -4 EA1FUB -15 / - 2 Partial capture
07-16 14:08 20m - / -8 F5HNQ -10 / - 2 Partial capture
07-15 19:01 20m - / -14 UN0GY -10 / - 2 ✓ Closing fragment
07-15 15:23 20m - / - M0SCK -12 / - 2 Partial capture
07-15 14:53 20m - / -16 RN6MA -16 / - 2 ✓ Closing fragment
07-03 08:46 20m - / - DL2FX -18 / - 2 Partial capture
07-03 06:14 20m - / -8 UR4QWW -11 / - 2 Partial capture
07-02 20:09 20m - / -20 9A6A -17 / - 4 ✓ Closing fragment
07-02 18:26 20m - / -15 CU6NS -16 / - 3 ✓ Closing fragment
07-02 12:37 20m - / -7 LZ1BT -15 / - 2 ✓ Closing fragment
06-27 19:22 20m - / -17 IR0RCAG -2 / - 2 Partial capture
06-25 17:36 20m - / -10 SP6FME +9 / - 3 ✓ Closing fragment
06-25 17:21 20m - / -24 OO0O -12 / - 4 Partial capture
06-25 17:16 20m - / -15 DK7ZT -20 / - 2 Partial capture
06-24 19:04 20m - / -12 F1PBZ -3 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
200715 -19 2282  RI1FJL PA4DDW JO33 (x2)
201600 -12 2282  9A3BMK/P PA4DDW JO33 (x2)
201900 -11 2282  F4LHZ/P PA4DDW JO33
202015 -13 2452  PA4DDW F4LHZ/P -09
202145  +2 1978  PA4DDW IK4RVY -23 (x5)
202500  -4 2282  IK4RVY PA4DDW R-15 (x2)
202630 -10 2282  CQ PA4DDW JO33
160515 -19 2281  F4LHZ/P PA4DDW JO33

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.

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