SO1CJ — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving SO1CJ, decoded by SO8OO in southeastern Poland. 1,245 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, across 35 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-10-05.

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 1,245 FT8 messages attributed to SO1CJ as the transmitting token by decoded message structure across 35 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (51%), followed by 160 m (38%) and 40 m (8%). Most decodes (90%) fell within the six-hour window 18:00-00:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (88%); the estimated median was +7 dB.

Overview

1,245

Messages attributed

UTC dates decoded

135

Active 15-min windows

+7 dB

Estimated median S/N

Bands

160m · 467 80m · 634 60m · 39 40m · 105

First attributed message: 2026-06-09
Last attributed message: 2026-10-05 21:13 UTC

Observed FT8 message patterns

Attributed sample: 1,245 messages
Active dates: 35 UTC dates
Estimated median S/N: +7 dB
Estimated 10th-90th percentile: -9 to +19 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 36, moderate (-15 to -9 dB) 111, strong (≥ -8 dB) 1,098.

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 SO1CJ in decoded directed-looking exchanges:

DL9KM · Fed. Rep. of Germany ×2 LZ4VR · Bulgaria ×2 4X1UF · Israel ×2 9A4ZM · Croatia ×2 DK5WL · Fed. Rep. of Germany ×2 HA7XL · Hungary ×2 HB9EFK · Switzerland ×2 5B4AMM · Cyprus ×2 TN8GD · Republic of the Congo ×2 YO4NF · Romania ×2 YO6LM · Romania ×2 RL2F · Kaliningrad ×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 SO1CJ

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 · 751 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 206 km (approx.)
Last such locator decoded: 2026-10-05 21:12 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	SO1CJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-05 21:12	160m	+2 / -8	R80SAA	-6 / +2	4	✓ Full exchange observed
10-04 22:27	80m	+10 / -16	OZ1BGQ	+11 / -7	3	✓ Full exchange observed
10-04 22:26	80m	+14 / -3	EB1LA	-7 / -6	5	✓ Full exchange observed
10-04 22:24	80m	+15 / -1	OK1WCF	+15 / +6	5	✓ Full exchange observed
10-04 22:23	80m	+16 / +10	RN2F	+12 / +4	5	✓ Full exchange observed
10-04 22:21	80m	+11 / -	CX6VM	- / -	3	Partial capture
10-04 22:20	80m	+11 / 0	DO4DXA	+17 / +3	5	✓ Full exchange observed
10-04 22:19	80m	+8 / -	F5RAV	- / -14	2	✓ Closing fragment
10-04 22:12	80m	+16 / +7	WF2A	0 / -10	13	✓ Full exchange observed
10-04 22:10	160m	+13 / -4	LZ2IP	+20 / +5	5	✓ Full exchange observed
10-04 22:08	160m	+16 / -12	Z31PM	-17 / -8	7	✓ Full exchange observed
10-04 22:05	160m	+16 / 0	SN6P	+1 / -3	7	✓ Full exchange observed
10-04 22:05	160m	+17 / -15	DF2NV	-5 / -5	6	✓ Full exchange observed
10-04 22:04	160m	+18 / -9	DK5WL	-3 / -3	5	✓ Full exchange observed
10-04 21:59	160m	0 / -	IW9FRA	- / -	2	Partial capture
10-04 21:53	160m	+1 / -4	5P1KZX	+14 / -3	5	✓ Full exchange observed
10-04 21:52	160m	+2 / -	RA9YTI	- / -	2	Partial capture
10-04 21:50	160m	0 / -8	GI4SNA	+4 / -4	5	✓ Full exchange observed
10-02 21:16	160m	-13 / -	RA1N	- / -	3	Partial capture
10-01 18:27	80m	+6 / -	C31CT	- / -	11	Partial capture
10-01 18:26	80m	+6 / -	RW0CR	- / -	2	Partial capture
09-30 20:28	160m	+15 / -17	IS0BOZ	-13 / 0	9	Partial capture
09-30 20:22	160m	+12 / -19	C37AC	-11 / -12	11	Partial capture
09-24 19:53	160m	-3 / -	C37AC	- / -	14	Partial capture
09-24 19:49	160m	0 / -18	4X1UF	-12 / 0	8	✓ Full exchange observed
09-24 19:48	160m	+2 / -	C37AC	- / -	3	Partial capture
09-23 20:07	80m	+5 / -	CN8WK	- / -	2	Partial capture
09-23 19:48	80m	+8 / -	RI1FJZ	- / -	9	Partial capture
09-23 19:45	160m	-16 / -	RA3FD	- / -	2	Partial capture
09-23 19:41	160m	-17 / -	LA9JKA	- / -	2	Partial capture
09-23 19:37	160m	-6 / -	JF8QNF	- / -	3	✓ Closing fragment
09-22 20:10	160m	-12 / -	EI5GSB	- / -3	2	✓ Closing fragment
09-22 19:59	160m	+2 / -	JF8QNF	- / -	2	Partial capture
09-22 19:57	160m	-20 / -2	EW6CB	-16 / +5	4	✓ Full exchange observed
09-22 19:54	160m	-18 / -5	HA7XL	-4 / +3	6	✓ Full exchange observed
09-22 19:53	160m	-18 / -	DK6WS	- / -4	2	Partial capture
09-22 19:48	160m	+1 / -	EI9FVB	- / -	2	Partial capture
09-22 19:43	160m	-4 / -	SP9JZU	+1 / +5	5	✓ Full exchange observed
09-22 19:42	160m	-5 / -3	DD7EE	-3 / -8	4	✓ Full exchange observed
09-22 19:40	160m	-2 / -1	9A2AJ	+20 / +4	5	✓ Full exchange observed
09-22 19:38	160m	+4 / -10	E70SZ	+2 / -8	5	✓ Full exchange observed
09-22 19:34	160m	-3 / -	RW9QA	- / -	5	Partial capture
09-22 19:27	160m	+2 / +3	9A4ZM	+9 / -5	6	✓ Full exchange observed
09-22 19:26	160m	-7 / -	R2FCT	-4 / -	2	✓ Closing observed
09-22 19:20	160m	-6 / -	YT2ZE	- / -	2	Partial capture
09-22 19:18	160m	0 / -	SV9MBH	-14 / -13	4	✓ Closing observed
09-22 19:12	80m	+13 / -	JE2ERR	- / -	4	Partial capture
09-20 18:21	160m	-1 / -	SV4FFK	- / -	2	Partial capture
09-20 18:18	160m	+10 / -12	RK1N	-11 / 0	7	✓ Full exchange observed
09-20 18:16	160m	+4 / -	EW6BZ	+5 / -6	3	✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
220845 +17 2890  Z31PM SO1CJ JN99 (x2)
220930 -17 2379  SO1CJ Z31PM -12
220945 +16 2890  Z31PM SO1CJ R-08
221000 -17 2379  SO1CJ Z31PM RR73
221015 +17 2890  Z31PM SO1CJ 73
221045 +15 2890  LZ2IP SO1CJ JN99
221100 +20  850  SO1CJ LZ2IP -04
221115 +11 2890  LZ2IP SO1CJ R+05
221130 +20  850  SO1CJ LZ2IP RR73
221145 +12 2890  LZ2IP SO1CJ 73
211230  +5 1306  R80SAA SO1CJ JN99
211245  -4 1306  SO1CJ R80SAA -08
211300  -2 1306  R80SAA SO1CJ R+02
211315  -8 1306  SO1CJ R80SAA RR73

80m

UTC    dB Audio  Message
222430 +14 2737  RN2F SO1CJ 73
222445 +14 2738  SO1CJ OK1WCF JO80
222500 +13 2737  OK1WCF SO1CJ +06
222515 +17 2738  SO1CJ OK1WCF R-01
222530 +17 2737  OK1WCF SO1CJ RR73
222545 +15 2738  SO1CJ OK1WCF 73
222600 +16 2737  CQ SO1CJ JN99
222615  -4  534  SO1CJ EB1LA IN73
222630 +14 2737  EB1LA SO1CJ -06
222645  -7  534  SO1CJ EB1LA R-03
222700 +14 2737  EB1LA SO1CJ RR73
222715 -10  534  SO1CJ EB1LA 73
222730  +9 2737  OZ1BGQ SO1CJ -07
222745 +11  745  SO1CJ OZ1BGQ R-16
222800 +11 2737  OZ1BGQ SO1CJ RR73

40m

UTC    dB Audio  Message
183215 +11  643  SO1CJ EW4DX -13 (x3)
200745  +5 2994  SO1CJ G4CFS IO91 (x4)
200945  +3 2858  SO1CJ IZ0ZIP +02
200945  +6 2994  SO1CJ G4CFS 73
201015  +8 2858  SO1CJ IZ0ZIP RR73
201115 -17 1110  SO1CJ EA1Y -11 (x2)
201615  -6 1677  SO1CJ ON1DGN -02 (x2)
213400  +2 2629  SO1CJ CT7/YL2SW -14

20m

UTC    dB Audio  Message
064615  +7  865  SO1CJ CT3MD RR73
070400  -1 1253  SO1CJ YU7XL RR73 (x2)
061130 -12 3030  SO1CJ OA1F -19 (x2)
061230  +4  993  SO1CJ I1FLC -07
061230  +8 2878  SO1CJ F5PBG IN78
061300  +7  819  SO1CJ I1FLC RR73
061300 +16 2878  SO1CJ F5PBG IN78 (x3)
061715 -22 1149  SO1CJ ZL2BX RR73
061745  +8 2879  SO1CJ F5PBG IN78 (x3)

10m

UTC    dB Audio  Message
123930 -12 1504  SO1CJ I1/IZ2MHO -06
124215 -21 1975  SO1CJ DK8EE JO41
124415 -19 1475  SO1CJ PD4FL JO33 (x2)
085700 -19 2007  SO1CJ SV4DCQ -09 (x2)
085900  -7 2479  SO1CJ F4IIJ +01
101445 -15 2329  SO1CJ <...> +00 (x3)
074915 -15 1520  SO1CJ IU0VOG JN61 (x2)
075515  -6 1157  SO1CJ I4GAS R-02 (x2)
075615  +0 2614  SO1CJ IU8ADS JN70

60m

UTC    dB Audio  Message
194730 +10  830  EA9UV SO1CJ JN99
194745 -14  830  SO1CJ EA9UV -11
194800  +3  831  EA9UV SO1CJ R-08
194815 -16  830  SO1CJ EA9UV RR73
194830 +12  831  EA9UV SO1CJ 73
194930  +5 1181  F5RAV SO1CJ RR73
194945  -9 1181  SO1CJ F5RAV 73
195030  -1 1570  DM8ET SO1CJ R-15 (x2)
195215 +15  474  EB5RCA SO1CJ JN99 (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.

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