PD4FL — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving PD4FL, decoded by SO8OO in southeastern Poland. 2,222 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 63 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-08-31.

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 2,222 FT8 messages attributed to PD4FL as the transmitting token by decoded message structure across 63 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (93%), followed by 10 m (7%) and 40 m (0%). Most decodes (52%) fell within the six-hour window 08:00-14:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -16 dB.

Overview

2,222

Messages attributed

UTC dates decoded

446

Active 15-min windows

-16 dB

Estimated median S/N

Bands

40m · 5 20m · 2,058 10m · 159

First attributed message: 2026-06-07
Last attributed message: 2026-08-31 17:17 UTC

Observed FT8 message patterns

Attributed sample: 2,222 messages
Active dates: 63 UTC dates
Estimated median S/N: -16 dB
Estimated 10th-90th percentile: -23 to -5.1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1,200, moderate (-15 to -9 dB) 626, strong (≥ -8 dB) 396.

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 PD4FL in decoded directed-looking exchanges:

9A3MRN · Croatia ×2 3Z9W · Poland 9A3AUH · Croatia 9A7Y · Croatia EW3DY · Belarus F1MGE · France F4EDB · France F4FSY · France G1OZO · England HA9OA · Hungary HF7X · Poland IK2ZJP · Italy

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 PD4FL

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 · 1,787 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,091 km (approx.)
Last such locator decoded: 2026-08-31 17:17 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 UTC	Band	PD4FL S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-31 17:12	20m	+2 / -	SM3FYZ	- / -	2	✓ Closing fragment
08-31 16:43	20m	-10 / -	OH2DXB	- / -14	7	✓ Closing fragment
08-31 16:37	20m	-7 / -	II7MGBR	- / -3	3	Partial capture
08-31 16:36	20m	-12 / -	OK2MKJ	- / -	2	Partial capture
08-31 16:29	20m	-11 / -	UT0IN	- / -	4	Partial capture
08-31 16:27	20m	-8 / -12	R6FX	-3 / -7	5	✓ Full exchange observed
08-31 16:27	20m	- / -14	RX6DY	+11 / -	3	Partial capture
08-31 16:24	20m	-11 / -14	<...>	-1 / -	3	Partial capture
08-31 12:55	20m	-8 / -	9A5RIS	- / -	3	Partial capture
08-31 12:45	20m	-12 / -	SQ9ONX	- / -	2	Partial capture
08-31 12:41	20m	-13 / -	F4NPW	- / -	4	Partial capture
08-31 12:28	20m	-11 / -	SQ9ONX	- / -	7	Partial capture
08-31 11:34	20m	-6 / -	IW2HHL	- / -	7	Partial capture
08-31 10:42	20m	-4 / -	GM0UEJ	- / -	3	Partial capture
08-31 10:40	20m	+3 / +7	F6FBI	-3 / -8	5	✓ Full exchange observed
08-31 10:35	20m	-9 / -	EA1EU	- / -	2	Partial capture
08-30 14:17	20m	-4 / -	TC30AGU	- / -	3	Partial capture
08-30 13:14	20m	-6 / -	SA0GEM	- / -	3	Partial capture
08-30 13:09	20m	- / -2	RU4SS	+6 / -	3	✓ Closing fragment
08-30 12:35	20m	-10 / -	OH/SM5MRW	- / -	2	Partial capture
08-28 11:46	20m	-6 / -	OE9NET	- / -26	10	Partial capture
08-28 11:35	20m	- / -6	G1LQT	-6 / -	8	Partial capture
08-28 11:35	20m	-12 / -	EA2WX	- / -14	5	✓ Closing fragment
08-28 11:33	20m	-14 / -	HA7UL	- / -13	2	Partial capture
08-28 11:21	20m	-7 / -	EA7IX	- / -	4	Partial capture
08-28 11:09	20m	-11 / 0	SK2TT	-15 / -4	3	✓ Full exchange observed
08-28 08:59	20m	-16 / -15	AO5FSB	-15 / -	6	Partial capture
08-28 08:54	20m	-11 / -	IZ7WMM	- / -	7	Partial capture
08-27 21:55	20m	-12 / -	JH1BZJ	- / -	2	Partial capture
08-27 21:53	20m	-10 / -	KB1WSR	- / -	4	Partial capture
08-27 21:51	20m	-13 / -	N9UEL	- / -	3	Partial capture
08-27 21:44	20m	-17 / -	AF0E	- / -	5	Partial capture
08-27 21:40	20m	-11 / -	SP9DV	- / -4	3	✓ Closing fragment
08-27 21:34	20m	-9 / -	KB4OIF	- / -	4	Partial capture
08-27 21:31	20m	-7 / -	KE2CUR	- / -	3	Partial capture
08-27 21:27	20m	-8 / -	KF8CEQ	- / -	3	Partial capture
08-27 21:26	20m	-7 / -	AE4DW	- / -	3	Partial capture
08-27 21:23	20m	- / -6	W1AW/2	-14 / -	2	Partial capture
08-27 21:13	20m	-2 / -	JA1XGI	- / -	4	Partial capture
08-27 21:03	20m	+1 / -	<...>	- / -	7	Partial capture
08-27 20:54	20m	-4 / -	AE5MM	- / -	2	Partial capture
08-27 20:52	20m	-6 / -9	M7LYG	-1 / -7	5	✓ Full exchange observed
08-27 20:42	20m	-9 / -	WA1ZYX	- / -	5	Partial capture
08-27 20:41	20m	-6 / -19	4Z5MY	-8 / -	2	Partial capture
08-27 12:13	10m	-18 / -	SP8BJU	- / -14	2	Partial capture
08-27 12:09	10m	-18 / -	OK1ZJK	- / +1	2	Partial capture
08-27 12:01	10m	-16 / -	HB9DVO	- / -9	3	Partial capture
08-27 11:59	10m	-15 / -	9A170NT	- / -10	3	Partial capture
08-27 11:55	10m	-14 / -	OK1GSB	- / -16	4	✓ Closing fragment
08-27 11:53	10m	-12 / -	OM1AMT	- / -10	4	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
163845  -6  666  II7MGBR PD4FL R-03
164145  -6  833  SQ9BSA PD4FL 73
164315  -2 2630  OH2DXB PD4FL JO33 (x7)
165145  -8  877  LZ1VDK PD4FL R-17
165800 -13  947  IU7VOL PD4FL JO33
171215  +2 2880  SM3FYZ PD4FL JO33 (x2)
171715 -13 3004  GM0OPS PD4FL JO33
173245 -18 1093  PD4FL F6CAX -18

10m

UTC    dB Audio  Message
115500 -11 1218  OM1AMT PD4FL 73
115530 -14 1219  OK1GSB PD4FL JO33 (x4)
115900 -15 1218  9A170NT PD4FL JO33 (x3)
120130 -14 1218  HB9DVO PD4FL JO33 (x3)
120945 -18 1218  OK1ZJK PD4FL JO33 (x2)
121345 -17 1218  SP8BJU PD4FL JO33 (x2)

40m

UTC    dB Audio  Message
095330 -19 2330  PD4FL UT6HN KN69
173945 -22 1413  IW0FGX PD4FL 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.

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