SP4AMW — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: KO03

Receiver-side FT8 activity involving SP4AMW, decoded by SO8OO in southeastern Poland. 98 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 12 UTC dates in the available aggregate history. Observed between 2026-07-03 and 2026-09-08.

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 98 FT8 messages attributed to SP4AMW as the transmitting token by decoded message structure across 12 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (44%), followed by 80 m (22%) and 40 m (21%). Most decodes (92%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (81%); the estimated median was -1 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-1 dB

Estimated median S/N

Bands

80m · 22 60m · 12 40m · 21 20m · 43

First attributed message: 2026-07-03
Last attributed message: 2026-09-08 19:11 UTC

Observed FT8 message patterns

Attributed sample: 98 messages
Active dates: 12 UTC dates
Estimated median S/N: -1 dB
Estimated 10th-90th percentile: -13 to +12 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 15, strong (≥ -8 dB) 79.

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 SP4AMW in decoded directed-looking exchanges:

C91RU · Mozambique ×2 DK7ZT · Fed. Rep. of Germany ×2 F4JRC · France ×2 HB9EFK · Switzerland ×2 CA6SNT · Chile RM3DA · European Russia OH5KNL · Finland SP2HMT · Poland SP9UPH · Poland 9A4ZM · Croatia CR2WWA · Azores DL1R · Fed. Rep. of Germany

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 SP4AMW

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: KO03 · 5 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 400 km (approx.)
Last such locator decoded: 2026-08-27 10:00 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	SP4AMW S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-08 19:10	40m	-2 / +2	HB9EFK	+8 / -12	4	✓ Full exchange observed
09-08 19:08	40m	-5 / -	EI8GS	+4 / -3	4	✓ Closing observed
09-08 19:05	60m	+14 / 0	HA7TM	+10 / +5	4	✓ Full exchange observed
09-08 19:03	60m	+6 / -1	EW2RA	-3 / +7	5	✓ Full exchange observed
09-08 18:29	60m	+16 / -	OZ5VO	- / -16	2	Partial capture
09-08 18:24	80m	-2 / -	RC0AT/P	- / -2	3	Partial capture
09-08 18:17	80m	-2 / -8	DK7ZT	+2 / -3	6	✓ Full exchange observed
09-08 18:16	80m	-1 / +6	9A5E	-3 / -	3	✓ Closing observed
09-08 18:11	160m	- / -	SP9UPH	0 / -	4	✓ Closing fragment
09-06 18:01	80m	+7 / -10	YO4NT	+2 / -5	4	✓ Full exchange observed
09-06 17:47	160m	- / -1	OH5KNL	-6 / -	2	✓ Closing fragment
09-01 17:40	40m	0 / -	PE1NPS	- / -15	2	✓ Closing fragment
09-01 17:39	40m	+1 / -14	F4JRC	+2 / -8	4	✓ Full exchange observed
09-01 17:35	40m	+1 / -	OZ9FF	- / -8	2	Partial capture
09-01 17:28	80m	- / -1	DO7RMA	+8 / -	2	✓ Closing fragment
08-22 20:49	60m	- / -	DK7ZT	-11 / -	2	Partial capture
08-22 20:48	60m	+13 / -	DL7GP	- / -5	2	✓ Closing fragment
08-22 20:45	60m	+14 / -6	DL5DQZ	+2 / -	3	✓ Closing observed
08-22 20:45	60m	+11 / -2	ON7GB	-5 / -	5	✓ Closing observed
08-20 18:45	20m	+8 / 0	OE9GWV	-15 / -10	4	✓ Full exchange observed
08-20 18:43	20m	-2 / -	UN0GY	- / -1	2	✓ Closing fragment
08-20 18:32	20m	- / -9	DK7ZT	-5 / -	2	Partial capture
08-20 18:32	20m	+3 / -	DL1R	+11 / -11	10	✓ Closing observed
07-24 18:33	20m	+7 / -	C91RU	- / -	3	✓ Closing fragment
07-24 18:26	20m	+10 / -	C91RU	- / -18	7	✓ Closing fragment
07-22 14:52	20m	- / -	M0WOO	-2 / -	5	Partial capture
07-20 21:20	20m	- / -2	F5RRS	+2 / -	7	✓ Closing fragment
07-20 21:01	40m	-19 / -	TJ1GD/P	- / -14	2	Partial capture
07-20 08:26	20m	+3 / -2	DL9KM	-9 / -9	7	✓ Full exchange observed
07-20 08:25	20m	+4 / -	YU7AS	- / -	4	✓ Closing fragment
07-18 21:11	20m	-1 / -	VE2OPR	- / -16	3	Partial capture
07-18 21:09	20m	+2 / -	JF7XKY	- / -7	2	✓ Closing fragment
07-18 20:55	20m	-4 / -5	TA1BX	-8 / -13	7	✓ Full exchange observed
07-18 20:51	20m	-11 / -	VU2FR	- / -10	3	✓ Closing fragment
07-17 20:57	20m	- / -17	9A4ZM	+11 / -	3	✓ Closing fragment
07-17 20:34	40m	-4 / -	GJ0KYZ	- / -3	2	✓ Closing fragment
07-17 20:33	40m	-12 / -	EA1IOK	- / -17	2	Partial capture
07-17 07:48	20m	- / -19	IK4TVP	-13 / -	4	Partial capture
07-17 07:47	20m	- / +5	IT9VCE	-6 / -	2	✓ Closing fragment
07-16 15:07	20m	- / -	R6DVV	-20 / -	2	Partial capture
07-13 22:33	40m	- / -3	9A4ZM	-17 / -	3	Partial capture
07-13 22:32	40m	- / -1	G0ANS	-11 / -	2	Partial capture
07-13 22:32	40m	- / -1	PD0LBY	-15 / -	3	✓ Closing fragment
07-13 22:18	80m	-8 / -	9A4ZM	+9 / -7	7	Partial capture
07-13 22:16	80m	-7 / -	UA4FKT	+7 / -7	5	✓ Closing observed
07-13 22:15	80m	-5 / -2	LB9ZG	0 / -11	4	✓ Full exchange observed
07-06 10:06	20m	- / -3	YO6LM	-8 / -	2	Partial capture
07-05 21:01	20m	- / -1	CR2WWA	-2 / -	2	✓ Closing fragment
07-05 20:44	20m	- / -5	YO4NF	-4 / -	2	Partial capture
07-05 20:42	20m	- / -	F5RRS	-5 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

10m

UTC    dB Audio  Message
083745 -24 1662  SP4AMW RM3DA 73
143515 -22 1341  SP4AMW CA6SNT 73

40m

UTC    dB Audio  Message
173600  +1 2841  OZ9FF SP4AMW -09
173915  +2 2841  F4JRC SP4AMW -08
173930  +4 2779  SP4AMW F4JRC R-14
173945  +0 2841  F4JRC SP4AMW RR73
174000  +0 2778  SP4AMW F4JRC 73
174015  -1 2841  PE1NPS SP4AMW -15 (x2)
190800  -1 2893  EI8GS SP4AMW -03 (x2)
191000  -4 2893  HB9EFK SP4AMW -12
191015 +10 2555  SP4AMW HB9EFK R+02
191030  -1 2893  HB9EFK SP4AMW RR73
191045  +7 2555  SP4AMW HB9EFK 73
191100  -6 2892  EI8GS SP4AMW RR73
191115  +4 2563  SP4AMW EI8GS 73

60m

UTC    dB Audio  Message
204900 -10 1901  SP4AMW DK7ZT +12 (x2)
095945 -18 2099  CQ SP4AMW KO03 (x2)
182900 +15 2901  OZ5VO SP4AMW -16 (x2)
190300  +2 2982  EW2RA SP4AMW +07
190315  -7 1629  SP4AMW EW2RA R-01 (x2)
190400 +11 2982  EW2RA SP4AMW RR73
190415  -4 1629  SP4AMW EW2RA 73
190530 +15 2982  HA7TM SP4AMW +05
190545  +7 2430  SP4AMW HA7TM R+00
190600 +12 2982  HA7TM SP4AMW RR73
190615 +12 2430  SP4AMW HA7TM 73

80m

UTC    dB Audio  Message
180200  +2 1843  SP4AMW YO4NT 73
180230  +4 2904  RA2FU SP4AMW -04
181645  -4 2134  SP4AMW 9A5E R+06
181700  -1 2871  9A5E SP4AMW RR73
181715  +0 1116  SP4AMW DK7ZT -08
181715  -2 2134  SP4AMW 9A5E 73
181745  +1 1116  SP4AMW DK7ZT -08 (x2)
181830  -3 2871  DK7ZT SP4AMW R-03
181845  +3 1115  SP4AMW DK7ZT RR73
181900  +0 2871  DK7ZT SP4AMW 73
181915  +9 2871  SP4AMW UA4FKT LO23
182445  -3 2871  RC0AT/P SP4AMW -02 (x3)

160m

UTC    dB Audio  Message
174700  -3 2387  SP4AMW OH5KNL R-01 (x2)
181100  +0 2318  SP4AMW SP9UPH JO90
181100  -3  845  SP4AMW SP2HMT 73
181130  +2 2318  SP4AMW SP9UPH JO90 (x3)

20m

UTC    dB Audio  Message
183315 +13 2657  SP4AMW DL1R JN58 (x2)
183345  -9 2771  SP4AMW DK7ZT -09
183500  +9 3001  DL1R SP4AMW -11 (x2)
183615 +20 2657  SP4AMW DL1R JN58
183730  +0 3001  DL1R SP4AMW -02 (x3)
184330  -8 3001  UN0GY SP4AMW -01 (x2)
184500  +2 3001  OE9GWV SP4AMW -10
184515 -10 1980  SP4AMW OE9GWV R+00
184530 +13 3001  OE9GWV SP4AMW RR73
184545 -20 1980  SP4AMW OE9GWV 73

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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