SP3DUG — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JO72

Receiver-side FT8 activity involving SP3DUG, decoded by SO8OO in southeastern Poland. 188 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 10 UTC dates in the available aggregate history. Observed between 2026-06-23 and 2026-09-10.

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 188 FT8 messages attributed to SP3DUG as the transmitting token by decoded message structure across 10 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (56%), followed by 40 m (43%) and 20 m (1%). Several six-hour UTC windows tied for the largest share (81%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (99%); the estimated median was +6 dB.

Overview

188

Messages attributed

UTC dates decoded

Active 15-min windows

+6 dB

Estimated median S/N

Bands

80m · 106 40m · 81 20m · 1

First attributed message: 2026-06-23
Last attributed message: 2026-09-10 06:06 UTC

Observed FT8 message patterns

Attributed sample: 188 messages
Active dates: 10 UTC dates
Estimated median S/N: +6 dB
Estimated 10th-90th percentile: -3 to +14 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 2, strong (≥ -8 dB) 186.

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 SP3DUG in decoded directed-looking exchanges:

Z62NS · Republic of Kosovo 9A4ZM · Croatia 9V1DX · Singapore BG0FFH · China DJ0MAB · Fed. Rep. of Germany DK8HC · Fed. Rep. of Germany EA1IOK · Spain EB3JT · Spain HB0WR · Liechtenstein HB9XBY · Switzerland HZ1TT · Saudi Arabia JA4FDZ · Japan

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 SP3DUG

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: JO72 · 122 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 552 km (approx.)
Last such locator decoded: 2026-09-10 05:59 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	SP3DUG S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-10 06:10	40m	- / -17	HB9XBY	-4 / -	3	✓ Closing fragment
09-10 06:05	80m	0 / -9	IQ4JO	-8 / +3	5	✓ Full exchange observed
09-10 06:02	80m	+1 / -	GM6URC	- / -5	4	Partial capture
09-10 05:59	80m	+2 / -5	OE3FVU	-5 / +2	6	✓ Full exchange observed
09-10 05:55	80m	0 / -	ON1JP	- / -9	3	Partial capture
09-10 05:53	80m	+6 / 0	SP6FME	+12 / -	7	Partial capture
09-10 05:51	80m	+4 / 0	OZ/KD0NDU	-19 / +4	3	Partial capture
09-02 18:25	80m	+5 / -	RI1FJL	- / -17	9	Partial capture
09-02 18:19	80m	0 / -	RI1FJL	- / -	2	Partial capture
09-02 17:46	80m	+12 / -	RI1FJL	- / -17	32	Partial capture
09-01 18:27	80m	+8 / -	RI1FJL	- / -	2	Partial capture
08-31 20:35	80m	+1 / -	RI1FJL	- / -	2	Partial capture
08-31 20:27	80m	+8 / -	RI1FJL	- / -	3	Partial capture
08-31 20:21	80m	+6 / -	RI1FJL	- / -	7	Partial capture
08-30 17:34	20m	- / -19	EX7DY	-12 / -	2	Partial capture
08-30 17:32	20m	- / -10	3A2MW	-9 / -	2	Partial capture
08-30 07:16	40m	-2 / -	DJ0MAB	-14 / -10	6	✓ Full exchange observed
08-30 07:14	40m	-3 / -	ZA5G	- / -5	5	✓ Closing fragment
08-30 07:13	40m	-1 / -	HB0WR	- / 0	4	✓ Closing fragment
08-30 07:07	40m	+1 / -	OZ6NC	- / -3	3	✓ Closing fragment
08-30 07:04	80m	-1 / -5	DB1TH	-4 / 0	5	✓ Full exchange observed
07-28 20:22	40m	-6 / -	EA1IOK	- / -14	2	✓ Closing fragment
07-28 20:22	40m	-5 / -2	OE9GWV	-10 / +1	7	✓ Full exchange observed
07-28 20:21	40m	-8 / +2	9A4ZM	-13 / -	3	✓ Full exchange observed
07-28 20:18	40m	-6 / -	JA5MHD	- / -4	2	✓ Closing fragment
07-28 20:14	40m	+11 / -	4S7NAD	- / -	5	Partial capture
07-28 20:05	40m	+5 / -	HL4GAV	- / -	5	Partial capture
07-28 20:04	40m	+8 / -	VK6BAD	- / -	2	Partial capture
07-28 20:02	40m	+9 / +7	OS4K	-20 / -5	3	Partial capture
07-28 20:02	40m	+8 / -	EB3JT	- / +4	2	✓ Closing fragment
07-28 20:00	40m	+7 / -	ZL3TX	- / -22	3	✓ Closing fragment
07-28 19:53	40m	+2 / -	D2UY	- / -	4	Partial capture
06-25 20:18	80m	+11 / -11	BA5AN	-15 / -16	4	✓ Full exchange observed
06-24 19:51	80m	+17 / -	VK4DAD	- / -24	4	✓ Closing fragment
06-24 19:37	80m	+10 / -	A71UN	-16 / -18	18	✓ Closing observed
06-24 19:30	40m	+10 / -	JA4FDZ	- / -	4	✓ Closing fragment
06-24 19:28	40m	+13 / -	JR6UEE	- / -	3	Partial capture
06-24 19:26	40m	+5 / -	YO4LUP	-14 / 0	2	Partial capture
06-24 19:23	40m	+5 / -	9V1DX	- / -20	5	✓ Closing fragment
06-23 20:11	40m	+6 / -	9V1DX	- / -	7	Partial capture
06-23 20:01	40m	+6 / -	TN8GD	- / -	4	Partial capture
06-23 20:00	40m	+1 / -	BG0FFH	- / -19	3	✓ Closing fragment
06-23 19:58	40m	+6 / -	HZ1TT	- / -9	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
071515  -1 1984  HB0WR SP3DUG R+00 (x2)
071600 -19 1983  SP3DUG DJ0MAB JN49
071615  -4 2137  ZA5G SP3DUG JO72
071630 -16 1983  SP3DUG DJ0MAB JN49
071645  -3 2138  ZA5G SP3DUG JO72 (x3)
071815  -6 1982  DJ0MAB SP3DUG -10
071830 -10 1983  SP3DUG DJ0MAB R+11
071845  +1 1982  DJ0MAB SP3DUG RRR
071900 -11 1983  SP3DUG DJ0MAB 73
061000  -4  819  SP3DUG HB9XBY -17 (x3)

80m

UTC    dB Audio  Message
055930  +1 1620  OE3FVU SP3DUG JO72
055945  -6 1620  SP3DUG OE3FVU -05 (x2)
060030  +1 1619  OE3FVU SP3DUG R+02
060045  -5 1620  SP3DUG OE3FVU RR73
060100  +3 1619  OE3FVU SP3DUG 73
060200  +1 1780  GM6URC SP3DUG R-05 (x4)
060530  -7 1520  SP3DUG IQ4JO JN63
060545  +0 1520  IQ4JO SP3DUG +03
060600  -6 1520  SP3DUG IQ4JO R-09
060615  +0 1520  IQ4JO SP3DUG RRR
060630 -11 1520  SP3DUG IQ4JO 73

20m

UTC    dB Audio  Message
173400  +8 2213  BU2FW SP3DUG JO72
073430 -16  781  SP3DUG Z62NS RR73
173245  -9 1213  SP3DUG 3A2MW -10 (x2)
173400 -15 1215  SP3DUG EX7DY -19 (x2)

10m

UTC    dB Audio  Message
081300 -19 1339  SP3DUG S52D JN76

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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