SQ1JKB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JO73

Receiver-side FT8 activity involving SQ1JKB, decoded by SO8OO in southeastern Poland. 58 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 12 UTC dates in the available aggregate history. Observed between 2026-06-13 and 2026-08-23.

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 58 FT8 messages attributed to SQ1JKB as the transmitting token by decoded message structure across 12 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (62%), followed by 20 m (38%). Most decodes (62%) fell within the six-hour window 11:00-17:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-12 dB

Estimated median S/N

Bands

40m · 36 20m · 22

First attributed message: 2026-06-13
Last attributed message: 2026-08-23 15:05 UTC

Observed FT8 message patterns

Attributed sample: 58 messages
Active dates: 12 UTC dates
Estimated median S/N: -12 dB
Estimated 10th-90th percentile: -20 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 16, moderate (-15 to -9 dB) 19, strong (≥ -8 dB) 23.

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 SQ1JKB in decoded directed-looking exchanges:

SQ8AZT · Poland ×2 F5HNQ · France F5RRS · France ON3KJU · Belgium UT7UJ · Ukraine EW2ZC · Belarus R2FDU · Kaliningrad SP5ROM · Poland

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 SQ1JKB

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: JO73 · 42 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 613 km (approx.)
Last such locator decoded: 2026-08-23 15:05 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	SQ1JKB S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-23 15:05	40m	-19 / -	SP5IDR	-1 / -	2	Partial capture
08-23 15:04	40m	-18 / -	SQ3EWA	- / -	2	Partial capture
08-23 14:55	40m	-13 / -	SQ3EWA	- / -	3	Partial capture
08-23 10:11	20m	- / -	IW0CGT	-6 / -	3	Partial capture
08-23 10:10	20m	- / +4	UT7UJ	+2 / -	3	✓ Closing fragment
08-22 23:00	40m	-4 / -11	R2FDU	-3 / -2	4	✓ Full exchange observed
08-22 22:58	40m	- / -13	EW2ZC	-5 / -	3	✓ Closing fragment
08-22 22:33	20m	- / -	W2BCC	-13 / -	3	Partial capture
08-22 22:22	20m	- / -	PY5EJ	-14 / -	2	Partial capture
08-22 22:19	20m	- / -5	ON3KJU	-4 / -	2	✓ Closing fragment
08-16 15:40	40m	- / -	OK5AG/P	-4 / -	2	Partial capture
08-09 09:39	20m	- / -	F1HFP	-20 / -	6	Partial capture
08-09 08:38	20m	- / -	F5HNQ	-14 / -	2	✓ Closing fragment
08-09 08:34	40m	- / -	DL5MK	-20 / -	2	Partial capture
07-15 09:51	20m	- / -14	MM3RCR	-20 / -	2	Partial capture
07-15 08:42	20m	- / -14	LY3BES	-7 / -	3	Partial capture
07-15 08:10	20m	- / -	DL3MIB	-6 / -	5	Partial capture
07-15 07:40	20m	- / -19	CT7AUT	-8 / -	2	Partial capture
07-13 13:58	20m	- / -	IV3JBR	-3 / -	4	Partial capture
07-13 13:56	20m	- / -	PD0WL	-23 / -	4	Partial capture
07-13 11:10	20m	- / -	LZ3CB	+3 / -	3	Partial capture
07-13 11:10	20m	- / -	UA3PAB	-24 / -	2	Partial capture
07-13 11:02	20m	- / -	IK4LZH	+1 / -	4	Partial capture
07-13 11:01	20m	- / +4	DL6EL	-3 / -	7	Partial capture
07-13 10:16	20m	- / -4	PD3LKN	-13 / -	4	Partial capture
07-13 10:05	40m	- / -	UX7QV	-3 / -	6	Partial capture
07-07 20:13	40m	-8 / -7	SQ8AZT	-7 / -	6	✓ Closing observed
07-07 09:09	20m	- / -	F5RRS	0 / -	2	✓ Closing fragment
07-06 20:20	40m	-20 / -	SQ8AZT	- / -9	3	✓ Closing fragment
07-06 19:43	20m	- / -	PD9OH	-5 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
225930  -4 1276  SQ1JKB EW2ZC RR73
230045  +0  943  SQ1JKB R2FDU -11
230100  -3  943  R2FDU SQ1JKB R-02
230115  -6  943  SQ1JKB R2FDU RR73
230130  -5  943  R2FDU SQ1JKB 73
230315  -8 1532  NP4PR SQ1JKB JO73
145545 -14 1450  SQ3EWA SQ1JKB JO73 (x3)
145715 -14 1349  SQ2RBY/P SQ1JKB JO73 (x2)
150445 -20 1349  SQ3EWA SQ1JKB JO73 (x2)
150545 -19 1484  SP5IDR SQ1JKB JO73
150700  -1 1485  SQ1JKB SP5IDR +11

20m

UTC    dB Audio  Message
221945  -4  978  SQ1JKB ON3KJU -05 (x2)
222245 -14 2242  SQ1JKB PY5EJ GG54 (x2)
222415 -10 2973  SQ1JKB F6FDY JN33
223145 -17 2242  SQ1JKB PY5EJ GG54
223345 -14 2551  SQ1JKB W2BCC FN21 (x3)
101030  +3 1491  SQ1JKB UT7UJ +04 (x2)
101100  -7 1314  SQ1JKB IW0CGT JN61
101130  +0 1491  SQ1JKB UT7UJ RR73
101200  -7 1314  SQ1JKB IW0CGT JN61 (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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