S55A — 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: Slovenia Most frequent locator attributed to this token: JN65

Receiver-side FT8 activity involving S55A, decoded by SO8OO in southeastern Poland. 9,592 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 112 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-11-05.

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 9,592 FT8 messages attributed to S55A as the transmitting token by decoded message structure across 112 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (79%), followed by 20 m (13%) and 10 m (8%). Most decodes (53%) fell within the six-hour window 04:00-10:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

9,592

Messages attributed

112

UTC dates decoded

920

Active 15-min windows

-8 dB

Estimated median S/N

Bands

40m · 7,608 20m · 1,249 10m · 735

First attributed message: 2026-06-06
Last attributed message: 2026-11-05 07:04 UTC

Observed FT8 message patterns

Attributed sample: 9,592 messages
Active dates: 112 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -16 to +1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1,222, moderate (-15 to -9 dB) 3,164, strong (≥ -8 dB) 5,206.

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 S55A in decoded directed-looking exchanges:

GJ0KYZ · Jersey ×9 SP5DUJ · Poland ×6 R2SN · European Russia ×5 F3CJ · France ×4 PD2WL · Netherlands ×3 TA3NK · Asiatic Turkey ×3 N9CBW · United States ×3 RW1AI · European Russia ×2 F1PBZ · France ×2 LA1SNA · Norway ×2 ON1AJ · Belgium ×2 PD2RAL · Netherlands ×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 S55A

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: JN65 · 5,603 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 821 km (approx.)
Last such locator decoded: 2026-11-05 07:04 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	S55A S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-05 07:01	40m	-2 / -	J88IH	- / -	6	Partial capture
11-05 06:56	40m	-3 / -	R4HNX/P	- / -	6	Partial capture
11-05 06:53	40m	-9 / -	OK1STV	- / -	3	Partial capture
11-05 06:47	40m	-8 / -	G0LAT	- / -18	5	Partial capture
11-05 06:44	40m	-5 / -	R3DCA	- / -	2	Partial capture
11-05 06:40	40m	-4 / -	YL3ATJ	- / -15	2	✓ Closing fragment
11-05 06:38	40m	-1 / +4	DL1VVQ	-5 / -	3	✓ Closing observed
11-05 06:33	40m	+2 / -	DG9WH	- / -	3	Partial capture
11-05 06:32	40m	-1 / -	F4NGK	- / -14	2	✓ Closing fragment
11-05 06:31	40m	0 / -4	SP3DOF	-16 / -16	4	✓ Full exchange observed
11-05 06:29	40m	+2 / -	M0KDZ	- / -12	2	✓ Closing fragment
11-05 06:25	40m	+1 / -	EA2FGV	- / -16	4	Partial capture
11-05 06:22	40m	+3 / -	KG8FQ	- / -	3	Partial capture
11-05 06:20	40m	+1 / -	M0DSK	- / -19	4	✓ Closing fragment
11-05 06:19	40m	-4 / -	WB8YJF	- / -7	2	✓ Closing fragment
11-05 06:17	40m	0 / -	3A2LF	-12 / -	2	✓ Closing observed
11-05 06:13	40m	+4 / -	PA3FMK	- / -7	2	✓ Closing fragment
11-05 06:13	40m	+5 / -1	DG5PW	-4 / -7	6	✓ Full exchange observed
11-05 06:10	40m	+1 / -	R3DCA	- / -	3	Partial capture
11-05 06:07	40m	+1 / -	M0PFX	- / -17	2	✓ Closing fragment
11-05 06:06	40m	0 / -	N5RJR	- / -17	4	Partial capture
11-05 06:01	40m	-3 / -	WV2M	- / -11	6	✓ Closing fragment
11-05 06:00	40m	+2 / -	WB3FME	- / -15	2	✓ Closing fragment
11-05 05:58	40m	+4 / -	IK3GBG	- / -	2	Partial capture
11-05 05:56	40m	0 / -	EA2BUW	- / -	2	✓ Closing fragment
11-05 05:54	40m	-3 / -9	UR5TOC	0 / -10	5	✓ Full exchange observed
11-05 05:53	40m	0 / -	N9CBW	- / -11	2	✓ Closing fragment
11-05 05:51	40m	+1 / -	RA6FTH	- / -12	3	Partial capture
11-05 05:49	40m	+3 / -	N5RN	- / -	2	Partial capture
11-05 05:47	40m	+1 / -	W8TA	- / -23	3	Partial capture
11-05 05:46	40m	-2 / -	R6OBN	-14 / -13	3	✓ Closing observed
11-05 05:42	40m	+2 / -	N5RN	- / -	3	Partial capture
11-05 05:39	40m	+1 / -	S52UF	- / -	3	Partial capture
11-05 05:36	40m	-2 / -	KR4HRN	- / -11	5	✓ Closing fragment
11-05 05:34	40m	-5 / -13	RW6HP	-12 / -	5	✓ Closing observed
11-05 05:29	40m	- / -3	GJ0KYZ	-6 / -	2	✓ Closing fragment
11-03 05:13	40m	- / -11	R6ZAC	-11 / -	4	✓ Closing fragment
11-03 05:02	40m	- / -15	TC0TR	-21 / -	3	✓ Closing fragment
11-03 04:54	40m	- / -6	R2SN	+4 / -	2	✓ Closing fragment
10-30 07:16	40m	-6 / -	N3YT	- / -8	2	✓ Closing fragment
10-30 07:12	40m	-5 / -	SP3BPC	- / -	3	Partial capture
10-30 07:04	40m	-4 / -12	DF2JK	-11 / +1	6	✓ Full exchange observed
10-30 07:01	40m	-6 / -	UB6LUR	- / -	2	Partial capture
10-30 07:00	40m	-6 / -2	GJ0KYZ	-8 / -	3	✓ Closing observed
10-30 06:50	40m	-13 / 0	DK8ZZ	+10 / -3	3	✓ Full exchange observed
10-30 06:42	40m	-8 / -	LA4MHA	- / -10	2	✓ Closing fragment
10-30 06:33	40m	- / -	EA5ET	-14 / -	2	✓ Closing fragment
10-30 06:24	40m	-4 / -	KB3QPL	- / -23	3	✓ Closing fragment
10-29 22:08	40m	- / -8	CT1FNG	-14 / -	2	Partial capture
10-29 21:40	40m	- / -20	EA7J	-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
065445  -2  765  CQ S55A JN65 (x3)
065615  -1  765  R4HNX/P S55A JN65 (x6)
070145  -2  765  J88IH S55A JN65 (x6)

10m

UTC    dB Audio  Message
122715  -8 1167  S55A CR7BUJ 73
141700 -19 1840  S55A PT2ADM -13
083445  -8 1663  S55A CN8WK -15 (x3)
090800 -21 1410  S55A YB1UUN RR73
082700 -10  555  S55A R8DV RR73
082800  -4  812  S55A 4L1AX -14 (x2)
083200 -19 2181  S55A UN7IV -12
084700 -17 1394  S55A RA0AF RR73
073815 -16  957  S55A UA0SU -18
092445 -22 1670  S55A JY5IB -19
095815  -9 2481  S55A TA1MB KN41
085745  -5 2931  S55A UF8C RR73

20m

UTC    dB Audio  Message
051030 -22 1359  S55A RC8SAB -13
055530 -12 1252  S55A R3BIS -14 (x2)
060130 -20 2126  S55A VK7ZBX RR73
060230 -24 1528  S55A LB6CG -04
061730  +0  879  S55A LA6AFA JO59
061800 -21 1872  S55A RA4Y LO35
061800 -14  879  S55A LA6AFA R-02 (x2)
063200 -11 1873  S55A RA4Y LO35 (x4)
072430 -19 2180  S55A F8ARK IN94 (x2)

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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