PD0SBJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Netherlands Most frequent locator attributed to this token: JO31

Receiver-side FT8 activity involving PD0SBJ, decoded by SO8OO in southeastern Poland. 61 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-06 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 61 FT8 messages attributed to PD0SBJ as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (39%), followed by 40 m (31%) and 10 m (30%). Several six-hour UTC windows tied for the largest share (79%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-12 dB

Estimated median S/N

Bands

40m · 19 20m · 24 10m · 18

First attributed message: 2026-06-06
Last attributed message: 2026-08-31 15:09 UTC

Observed FT8 message patterns

Attributed sample: 61 messages
Active dates: 4 UTC dates
Estimated median S/N: -12 dB
Estimated 10th-90th percentile: -19 to -3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 21, moderate (-15 to -9 dB) 24, strong (≥ -8 dB) 16.

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 PD0SBJ in decoded directed-looking exchanges:

G8KHF · England LZ2RR · Bulgaria KF9UG · United States OH3DJP · Finland M0VTS · England OK1HEH · Czech Republic PD4RJ · Netherlands PG4T · Netherlands

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 PD0SBJ

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: JO31 · 26 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,054 km (approx.)
Last such locator decoded: 2026-08-31 15:09 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	PD0SBJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-31 15:08	20m	-17 / -	HA1BF	- / -	3	Partial capture
08-31 14:56	20m	0 / -	RI1FJL	- / -	2	Partial capture
08-31 14:51	20m	-3 / -	WA2ELL	- / -	4	Partial capture
08-31 14:49	20m	-10 / -	KF9UG	- / -7	3	✓ Closing fragment
08-31 14:40	20m	-4 / -	US2YW	- / -	2	Partial capture
08-31 14:39	20m	-6 / -	SV2HTW	- / -4	2	Partial capture
08-31 14:20	40m	-16 / 0	OK1HEH	-10 / -9	3	✓ Full exchange observed
08-31 14:18	40m	-5 / +10	PG4T	-10 / -	3	✓ Closing observed
08-31 14:05	40m	-13 / -	M0VTS	- / -10	2	✓ Closing fragment
08-31 13:59	40m	-14 / -	F6FHZ	- / -3	2	Partial capture
08-31 13:57	40m	-11 / -	PD4RJ	-21 / +2	4	✓ Closing observed
06-26 14:54	10m	-2 / -	EA1GTX	- / -9	2	Partial capture
06-26 14:50	10m	-12 / -	<...>	- / -3	2	Partial capture
06-26 14:28	10m	-12 / -7	G0VXM	-11 / +1	17	Partial capture
06-26 14:13	10m	-8 / -	G8KHF	- / -1	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
143930  -4  855  SV2HTW PD0SBJ R-04
144000  -3  855  US2YW PD0SBJ +16 (x2)
144930  -7  818  KF9UG PD0SBJ R-07 (x3)
145100  +0  670  WA2ELL PD0SBJ JO31 (x4)
145600  +2  488  RI1FJL PD0SBJ JO31 (x2)
150845 -22 1345  HA1BF PD0SBJ JO31 (x3)

40m

UTC    dB Audio  Message
135630 -10 1069  DF0NN PD0SBJ JO31
135730 -11 1343  PD4RJ PD0SBJ JO31 (x2)
135815 -21 1344  PD0SBJ PD4RJ RRR
135830 -13 1343  PD4RJ PD0SBJ 73
135930 -16 1343  F6FHZ PD0SBJ -03 (x2)
140545 -13 2257  M0VTS PD0SBJ R-10 (x2)
141815 -10  239  PD0SBJ PG4T +10 (x2)
141900  -5  239  PG4T PD0SBJ 73
142045  -9 1868  PD0SBJ OK1HEH +00
142100 -16 1867  OK1HEH PD0SBJ R-09
142115 -11 1868  PD0SBJ OK1HEH RR73

10m

UTC    dB Audio  Message
143200 -10 1085  G0VXM PD0SBJ R+10 (x2)
143345  -8 1085  PD0SBJ G0VXM -07 (x5)
144045 -10  364  IS0LJQ PD0SBJ JO31
144300 -11  664  SV2CLJ PD0SBJ JO31
145045 -13  838  <...> PD0SBJ JO31 (x2)
145245 -19 1880  EA5HND PD0SBJ JO31
145415  -1 2542  EA1GTX PD0SBJ JO31 (x2)
145800  -6 2465  PD0SBJ LZ2RR RR73

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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