SP6ZWD — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JN99

Receiver-side FT8 activity involving SP6ZWD, decoded by SO8OO in southeastern Poland. 468 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, across 31 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-06.

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 468 FT8 messages attributed to SP6ZWD as the transmitting token by decoded message structure across 31 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (57%), followed by 80 m (38%) and 60 m (3%). Most decodes (76%) fell within the six-hour window 14:00-20:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (66%); the estimated median was -3.8 dB.

Overview

468

Messages attributed

UTC dates decoded

114

Active 15-min windows

-3.8 dB

Estimated median S/N

Bands

160m · 8 80m · 178 60m · 15 40m · 267

First attributed message: 2026-06-07
Last attributed message: 2026-09-06 19:39 UTC

Observed FT8 message patterns

Attributed sample: 468 messages
Active dates: 31 UTC dates
Estimated median S/N: -3.8 dB
Estimated 10th-90th percentile: -18 to +9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 76, moderate (-15 to -9 dB) 83, strong (≥ -8 dB) 309.

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 SP6ZWD in decoded directed-looking exchanges:

SP8BJU · Poland ×17 SQ8V · Poland ×17 SP9CXN · Poland ×9 SQ7EQB · Poland ×6 SQ3WL · Poland ×5 SQ9AWN · Poland ×4 SP5ROM · Poland ×3 SQ9MEZ · Poland ×3 SQ5EKY · Poland ×3 DK7ZT · Fed. Rep. of Germany ×2 SP9DOU · Poland ×2 SQ5OMY · Poland ×2

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 SP6ZWD

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: JN99 · 189 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 206 km (approx.)
Last such locator decoded: 2026-09-06 19:37 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	SP6ZWD S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-06 19:39	60m	- / -	OE3OOG	-2 / -	2	Partial capture
09-06 19:38	60m	+5 / -1	9A4ZM	+2 / -	4	✓ Closing observed
09-06 19:36	60m	+4 / +4	SP8BJU	+5 / -1	6	✓ Full exchange observed
09-06 19:35	80m	- / -	9A4ZM	+2 / -	2	Partial capture
09-06 19:34	80m	-2 / -6	SN0LPU	+8 / -23	4	✓ Full exchange observed
09-06 19:30	60m	-1 / -	SP8BJU	- / -	3	Partial capture
09-06 17:44	80m	+10 / -6	SQ8V	+2 / -6	5	✓ Full exchange observed
09-06 06:14	40m	-3 / -5	SQ8V	-8 / -1	5	✓ Full exchange observed
09-06 05:54	80m	- / -	DO9BAU	+1 / -	11	Partial capture
09-06 05:52	80m	+12 / +2	SP8BJU	+10 / -13	6	✓ Full exchange observed
09-05 19:46	80m	+11 / -	SQ8V	+7 / -18	6	✓ Closing observed
09-05 19:17	80m	+14 / -9	SQ8V	+5 / -21	7	✓ Full exchange observed
09-05 18:43	60m	0 / -4	SP8BJU	+6 / +5	4	✓ Full exchange observed
09-05 07:16	40m	-1 / -1	SQ7EQB	-4 / -2	8	✓ Full exchange observed
09-05 07:11	40m	-4 / -2	SP8BJU	-12 / -2	4	✓ Full exchange observed
09-04 17:41	80m	+10 / -8	SP7CWZ	-8 / -16	6	✓ Full exchange observed
09-04 17:38	80m	+8 / +2	SQ8V	0 / -11	4	✓ Full exchange observed
09-04 08:23	40m	-15 / -	SQ8V	- / -6	3	✓ Closing fragment
09-03 18:42	80m	+2 / -9	SQ8V	-2 / -26	4	✓ Full exchange observed
09-03 18:23	80m	+7 / -9	SQ8V	0 / -	9	Partial capture
09-03 17:25	60m	-6 / -2	SP8BJU	-2 / -	3	✓ Closing observed
09-03 17:03	40m	-1 / -	SQ7EQB	- / -12	6	✓ Closing fragment
09-03 15:58	40m	-9 / -	SQ8V	- / -	2	Partial capture
09-03 08:47	40m	0 / -	ON1JP	- / -21	3	Partial capture
09-03 08:44	40m	-5 / -14	SP6FME	+7 / -3	5	✓ Full exchange observed
09-03 08:42	40m	-3 / +2	SP8BJU	-10 / -2	6	✓ Full exchange observed
09-02 17:29	80m	+7 / -12	SQ8V	+6 / -18	5	✓ Full exchange observed
09-02 17:24	80m	+2 / -3	SP8BJU	+22 / -17	4	✓ Full exchange observed
09-02 08:37	40m	- / -	UT4PA	0 / -	2	Partial capture
09-02 08:35	40m	-10 / -	SQ8V	0 / -1	5	✓ Full exchange observed
09-02 06:59	40m	-8 / -	SP8BJU	- / 0	3	✓ Closing fragment
09-01 19:19	80m	-11 / -	SN100PKP	- / -	5	Partial capture
09-01 19:17	80m	-2 / -	SO100PKP	- / -	3	Partial capture
09-01 19:10	80m	+1 / -	SQ5I	- / -	5	Partial capture
09-01 18:50	80m	-9 / -	SQ8V	+16 / -22	3	✓ Closing observed
09-01 18:39	40m	0 / 0	SN100PKP	+9 / -3	4	Partial capture
09-01 18:38	40m	-13 / -	ON1MA/P	- / -	2	Partial capture
09-01 18:10	80m	+4 / -	<...>	- / -9	2	Partial capture
09-01 17:37	80m	-2 / -3	SP8BJU	+14 / -3	9	✓ Full exchange observed
09-01 17:16	60m	-2 / +3	SP8BJU	+4 / +2	5	✓ Full exchange observed
09-01 17:08	40m	- / -	UA3POG	-12 / -	2	Partial capture
09-01 17:05	40m	-4 / -	<...>	- / -16	2	Partial capture
09-01 14:14	40m	-7 / -	SP9TEX	- / -8	6	✓ Closing fragment
09-01 14:10	40m	-10 / -13	OT4R	-20 / -12	6	✓ Full exchange observed
09-01 14:08	40m	0 / -	SQ8V	-8 / -9	4	✓ Closing observed
09-01 13:55	40m	-8 / -	IK0XBU/P	- / -4	2	Partial capture
09-01 13:36	40m	-12 / -6	SP5HZM	-12 / -23	4	✓ Full exchange observed
09-01 13:34	40m	-10 / -1	SQ100PKP	-14 / +1	3	Partial capture
09-01 13:32	40m	-12 / -3	SP8BJU	-14 / -3	6	✓ Full exchange observed
09-01 13:14	40m	-13 / +3	SP5EWX	0 / +3	6	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
193015  +0 1226  SP8BJU SP6ZWD JN99 (x5)
193715  +5 1226  SP6ZWD SP8BJU +04
193730  +5 1226  SP8BJU SP6ZWD R-01
193745  +5 1226  SP6ZWD SP8BJU RR73
193800  +5 1226  SP8BJU SP6ZWD 73
193815  +5 1222  SP6ZWD 9A4ZM JN86 (x2)
193900  +5 1226  9A4ZM SP6ZWD RR73
193915  -5 2309  SP6ZWD OE3OOG JN87
193915  +1 1222  SP6ZWD 9A4ZM 73
193945  +1 2309  SP6ZWD OE3OOG JN87

80m

UTC    dB Audio  Message
055800  +4 2502  SP6ZWD DO9BAU JO62 (x4)
174415 +11 2170  SQ8V SP6ZWD JN99
174430  -1  886  SP6ZWD SQ8V -06
174445  +6 2170  SQ8V SP6ZWD R-06
174500  +5  886  SP6ZWD SQ8V RR73
174515 +12 2170  SQ8V SP6ZWD 73
193430  -5 1194  SN0LPU SP6ZWD JN99
193445  +8  886  SP6ZWD SN0LPU -06
193500  +1 1194  SN0LPU SP6ZWD R-23 (x2)
193545  +4 1190  SP6ZWD 9A4ZM JN86 (x2)

40m

UTC    dB Audio  Message
071145  -8  722  SP8BJU SP6ZWD 73
071600  +3  415  SQ7EQB SP6ZWD JN99 (x4)
071915  -7  413  SP6ZWD SQ7EQB -01
071930  +3  414  SQ7EQB SP6ZWD R-02
071945  -2  414  SP6ZWD SQ7EQB RR73
072000  -2  415  SQ7EQB SP6ZWD 73
061400  -4 1010  SQ8V SP6ZWD JN99
061415  -9 1010  SP6ZWD SQ8V -05
061430  -1 1010  SQ8V SP6ZWD R-01
061445  -8 1010  SP6ZWD SQ8V RR73
061500  -4 1012  SQ8V SP6ZWD 73
061545  -1 1011  SP6ZWD SQ8ECJ KO00

160m

UTC    dB Audio  Message
201915  -6 1445  SQ8NGI SP6ZWD 73
202000  +9 1196  SP6ZWD SP5GW KO12
202015  -7 1445  SP5GW SP6ZWD -09
202030  +6 1196  SP6ZWD SP5GW R-05
202045  -7 1445  SP5GW SP6ZWD RR73 (x2)
202130  -2 2625  SP6ZWD HF5A JO92
202145  -6 1444  SP5GW SP6ZWD RR73
202200  +2 2625  SP6ZWD HF5A JO92 (x7)

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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