IU6SBJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Italy Most frequent locator attributed to this token: JN63

Receiver-side FT8 activity involving IU6SBJ, decoded by SO8OO in southeastern Poland. 148 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 27 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-05.

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 148 FT8 messages attributed to IU6SBJ as the transmitting token by decoded message structure across 27 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (79%), followed by 40 m (11%) and 60 m (5%). The busiest six-hour window was 17:00-23:00 UTC, containing 44% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.

Overview

148

Messages attributed

UTC dates decoded

Active 15-min windows

-12 dB

Estimated median S/N

Bands

80m · 2 60m · 8 40m · 17 20m · 117 10m · 4

First attributed message: 2026-06-08
Last attributed message: 2026-09-05 04:44 UTC

Observed FT8 message patterns

Attributed sample: 148 messages
Active dates: 27 UTC dates
Estimated median S/N: -12 dB
Estimated 10th-90th percentile: -21 to -4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 49, moderate (-15 to -9 dB) 59, strong (≥ -8 dB) 40.

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 IU6SBJ in decoded directed-looking exchanges:

TM2WWA · France ×3 F1PBZ · France ×2 LZ1BT · Bulgaria ×2 3Z6I · Poland F5MXH · France AG3Z · United States DJ0MAB · Fed. Rep. of Germany DL9MV · Fed. Rep. of Germany GB2WWA · England IQ2UL · Italy KB2ELA · United States TI5RR · Costa Rica

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 IU6SBJ

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: JN63 · 110 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 979 km (approx.)
Last such locator decoded: 2026-09-05 04:44 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	IU6SBJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-01 03:11	80m	- / -	F5RRS	+3 / -	4	Partial capture
08-27 01:42	80m	- / -	DL9ATW	-4 / -	2	Partial capture
08-22 05:17	20m	-16 / -	K7BWC	- / -	3	Partial capture
08-21 15:00	20m	-5 / -	<...>	- / -	7	Partial capture
08-21 05:29	20m	- / -15	KE4EB	+1 / -	3	Partial capture
08-21 05:25	20m	-5 / -	KE4EB	- / -	3	Partial capture
08-21 05:24	20m	-5 / -	K7NN	- / -	2	Partial capture
08-21 05:21	20m	-3 / -	KE4EB	- / -	4	Partial capture
08-21 05:20	20m	-4 / -	KB2ELA	-7 / -8	3	✓ Closing observed
08-20 17:44	20m	-3 / -	N2BJ	- / -	3	Partial capture
08-20 17:41	20m	-2 / 0	DJ0MAB	+5 / -	4	✓ Closing observed
08-20 15:21	20m	-16 / -	XU7O	- / -	3	Partial capture
08-12 20:17	20m	-8 / -	KC1TEM	- / -	3	Partial capture
08-12 20:11	20m	-14 / -	AG3Z	- / -	2	✓ Closing fragment
08-12 14:27	20m	-10 / -	K1SM	- / -	2	Partial capture
08-12 05:42	20m	-16 / -	KD4AP	- / -	4	Partial capture
08-10 05:04	20m	-16 / -	K0SSD	- / -	3	Partial capture
07-22 04:26	20m	-10 / -	KB4UF	- / -	2	Partial capture
07-17 14:17	20m	-13 / -	KF0YOB	- / -	5	Partial capture
07-17 04:41	20m	- / -24	TI5RR	-14 / -	2	✓ Closing fragment
07-16 04:22	20m	-17 / -	W1MLT	- / -	5	Partial capture
07-16 04:21	20m	-20 / -	K4AKA	- / -	2	Partial capture
07-03 16:42	20m	- / -	F1RCQ	-14 / -	4	Partial capture
07-03 16:41	20m	- / -	GB2WWA	+9 / -	2	✓ Closing fragment
07-02 08:37	20m	- / -	PE9JAN	-4 / -	4	Partial capture
07-02 08:36	20m	- / -9	TM2WWA	-16 / -	2	✓ Closing fragment
07-02 08:30	20m	- / -24	F5IXN	-17 / -	2	Partial capture
06-29 09:01	10m	-10 / -	3Z6I	- / -10	3	✓ Closing fragment
06-28 21:05	20m	-10 / -	YB8UF	- / -	2	Partial capture
06-28 20:34	80m	- / -13	IQ2DB	-4 / -	2	✓ Closing fragment
06-28 20:24	40m	- / -	LZ1ZF	-16 / -	2	Partial capture
06-24 19:31	10m	- / -4	F5MXH	-13 / -	2	✓ Closing fragment
06-24 19:16	20m	-12 / -2	LZ1BT	-12 / -12	13	✓ Full exchange observed
06-24 19:13	20m	-9 / -	F1PBZ	+2 / -18	2	✓ Closing observed
06-24 07:57	20m	- / -14	II0RTER	-17 / -	3	Partial capture
06-24 07:53	20m	-12 / -	DL9MV	-18 / -	3	✓ Closing observed
06-24 07:50	20m	-12 / -	IQ2UL	-6 / +1	2	✓ Closing observed
06-23 21:22	60m	-16 / -	<...>	- / -7	2	Partial capture
06-23 21:15	80m	-18 / -19	II9RICT	+3 / +7	2	Partial capture
06-23 21:07	60m	- / -12	ON7GB	0 / -	3	✓ Closing fragment
06-23 21:06	60m	-10 / -	IQ0FN	- / -10	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
205630  -7  540  IU6SBJ IR0RPER +05
205930 -21 1539  IU6SBJ IQ6PE -09
202400 -16 1687  IU6SBJ LZ1ZF KN22 (x2)
050530 -19 1223  IU6SBJ TM2WWA RR73
044445  -4 2833  WA2HIP IU6SBJ JN63

80m

UTC    dB Audio  Message
211545  +3  760  IU6SBJ II9RICT -19
211600 -18  759  II9RICT IU6SBJ R+07
212030  +4 1183  IU6SBJ <...> -10
214700 -24  842  IQ0OS IU6SBJ JN63
202830  -2  572  IU6SBJ IR0RPER -12
203430  -1 1302  IU6SBJ IQ2DB -13 (x2)
224700  -9  590  IU6SBJ II3WWA -08
014215  -7 2063  IU6SBJ DL9ATW JO61 (x2)
031115  -3 1900  IU6SBJ F5RRS JN36 (x4)

20m

UTC    dB Audio  Message
052645  -8 2410  KE4EB IU6SBJ JN63
052930  -1 1804  IU6SBJ KE4EB -15 (x3)
150000  -4 1089  <...> IU6SBJ JN63 (x7)
051530 -11 1708  W1MLT IU6SBJ JN63
051745 -16 1707  K7BWC IU6SBJ JN63 (x3)

10m

UTC    dB Audio  Message
193130 -12 1229  IU6SBJ F5MXH R-04 (x2)
171900  -1  597  IU6SBJ IR2RMAG -08
090145  -8 2493  3Z6I IU6SBJ JN63 (x3)
093045 +19 2809  IU6SBJ TM2WWA RR73
104315 -19 2267  DA0WWA IU6SBJ JN63

60m

UTC    dB Audio  Message
210645 -10  952  IQ0FN IU6SBJ R-10 (x2)
210730  -1 1190  IU6SBJ ON7GB JO21 (x3)
212245 -17 1621  <...> IU6SBJ JN63 (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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