A41CK — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Oman Most frequent locator attributed to this token: LL93

Receiver-side FT8 activity involving A41CK, decoded by SO8OO in southeastern Poland. 28 FT8 messages attributed to this token as transmitter, on 80m, 20m, 10m, across 3 UTC dates in the available aggregate history. Observed between 2026-06-26 and 2026-09-30.

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 28 FT8 messages attributed to A41CK as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (61%), followed by 10 m (36%) and 80 m (4%). Most decodes (82%) fell within the six-hour window 12:00-18:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (64%); the estimated median was -6 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-6 dB

Estimated median S/N

Bands

80m · 1 20m · 17 10m · 10

First attributed message: 2026-06-26
Last attributed message: 2026-09-30 12:02 UTC

Observed FT8 message patterns

Attributed sample: 28 messages
Active dates: 3 UTC dates
Estimated median S/N: -6 dB
Estimated 10th-90th percentile: -15 to +1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 8, strong (≥ -8 dB) 18.

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 A41CK in decoded directed-looking exchanges:

EA7HCB · Spain OM7TJ · Slovak Republic OZ2AEM · Denmark US5AT · Ukraine M0LOH · England OZ7CL · Denmark R2BQM · European Russia RA6YDX · European Russia RC5F · European Russia RD3FY · European Russia RZ4FWA · European Russia F4EZJ · France

Most frequent locator attributed to A41CK

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: LL93 · 14 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 4,356 km (approx.)
Last such locator decoded: 2026-06-26 17:12 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	A41CK S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-30 12:01	10m	-10 / -	PR7EG	- / -16	3	Partial capture
09-30 12:00	10m	-14 / -	OM7TJ	- / -9	2	✓ Closing fragment
09-30 11:55	10m	-14 / -	EA8AR	- / -14	2	Partial capture
09-30 10:49	10m	- / -	EA7HCB	-17 / -	2	✓ Closing fragment
09-29 20:39	40m	- / -	IU2IKT	-1 / -	3	Partial capture
09-29 20:37	40m	- / -	SV1MOZ	-13 / -	3	Partial capture
09-29 20:37	40m	- / -	F5IXN	-12 / -	4	Partial capture
09-29 20:36	40m	- / -15	RA6YDX	-18 / -	2	✓ Closing fragment
09-29 20:33	40m	- / -12	OZ7CL	-8 / -	2	✓ Closing fragment
09-29 20:32	40m	- / -	DK6MR	-4 / -	2	Partial capture
09-29 20:31	40m	- / -	R7ZY	+1 / -	12	Partial capture
09-29 20:28	40m	- / -	GM5TGA	-19 / -	3	Partial capture
09-29 20:24	40m	- / -	R7ZY	-1 / -	5	Partial capture
09-29 20:22	40m	- / -13	RC5F	+3 / -	3	✓ Closing fragment
09-25 22:35	40m	- / -	PD4RJ	-6 / -	4	Partial capture
09-25 22:31	40m	- / 0	RZ4FWA	-11 / -	3	✓ Closing fragment
09-25 22:29	40m	- / -2	RD3FY	-15 / -	2	✓ Closing fragment
09-25 22:26	40m	- / -8	R2BQM	-10 / -	2	✓ Closing fragment
08-30 18:56	80m	- / -17	LA0FA	+8 / -	5	Partial capture
08-30 18:56	80m	- / -	M0RLC	+3 / -	7	Partial capture
08-30 18:56	80m	- / -13	RA4FHO	+8 / -	2	✓ Closing fragment
08-30 18:55	80m	- / -16	IS0IYV	-7 / -	5	✓ Closing fragment
08-30 18:55	80m	-23 / -	F4EZJ	+2 / -	3	✓ Closing observed
08-30 18:53	80m	- / -	SP3IOE	-2 / -	2	Partial capture
08-30 18:51	80m	- / -12	R6FFB	+5 / -	3	✓ Closing fragment
08-30 18:51	80m	- / -19	SP5CJY	+11 / -	6	✓ Closing fragment
08-30 18:49	80m	- / -	ON4ASG	-1 / -	2	Partial capture
08-30 18:47	80m	- / -20	UA4FKT	+1 / -	4	✓ Closing fragment
08-30 18:45	80m	- / -15	YO5PSE	-3 / -	3	✓ Closing fragment
08-30 18:44	80m	- / -	ON4ASG	0 / -	2	Partial capture
08-30 18:43	80m	- / -	SQ9OB	+17 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

10m

UTC    dB Audio  Message
104930 -16 1081  A41CK EA7HCB IM77 (x2)
114945 -16  916  US5AT A41CK RR73
115515 -14  916  OZ2AEM A41CK RR73
115545 -13  916  EA8AR A41CK -14 (x2)
120015 -15  917  OM7TJ A41CK -09 (x2)
120115  -8  917  PR7EG A41CK -16 (x3)
120245 -15  917  CT2IBL A41CK +06

40m

UTC    dB Audio  Message
203615  -1 2484  A41CK R7ZY KN98
203645 -16 1434  A41CK RA6YDX R-15
203645  -2 2484  A41CK R7ZY KN98
203715 -19 1434  A41CK RA6YDX 73
203715  +4 2484  A41CK R7ZY KN98
203715  -8  931  A41CK F5IXN JN23
203745 -11  894  A41CK SV1MOZ KM17
203745 -12  931  A41CK F5IXN JN23
203815 -15  895  A41CK SV1MOZ KM17
203815 -13  931  A41CK F5IXN JN23 (x2)
203915  +1  776  A41CK IU2IKT JN45
203945 -14  894  A41CK SV1MOZ KM17
203945  -2  776  A41CK IU2IKT JN45 (x2)

80m

UTC    dB Audio  Message
185645 +12 2948  A41CK RA4FHO RR73
185645  +2  688  A41CK M0RLC JO02
185645  -8 1339  A41CK IS0IYV JN40
185715  +1  687  A41CK M0RLC JO02
185715  +8 1788  A41CK LA0FA JO59
185715  -4 1872  A41CK IS0IYV JN40
185745  +3  687  A41CK M0RLC JO02
185745 +12 1788  A41CK LA0FA JO59
185745  -6 1872  A41CK IS0IYV R-16
185815  +6  687  A41CK M0RLC JO02
185815 +11 1789  A41CK LA0FA JO59
185815  -4 1872  A41CK IS0IYV 73
185845  +5  688  A41CK M0RLC JO02
185845  +7 1789  A41CK LA0FA R-17
185915  +7  688  A41CK M0RLC JO02

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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