OK2BJ — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving OK2BJ, decoded by SO8OO in southeastern Poland. 111 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-07-18 and 2026-09-19.

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 111 FT8 messages attributed to OK2BJ as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (81%), followed by 40 m (14%) and 160 m (5%). Several six-hour UTC windows tied for the largest share (90%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (100%); the estimated median was +15 dB.

Overview

111

Messages attributed

UTC dates decoded

Active 15-min windows

+15 dB

Estimated median S/N

Bands

160m · 6 80m · 90 40m · 15

First attributed message: 2026-07-18
Last attributed message: 2026-09-19 20:37 UTC

Observed FT8 message patterns

Attributed sample: 111 messages
Active dates: 4 UTC dates
Estimated median S/N: +15 dB
Estimated 10th-90th percentile: +5 to +23 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 111.

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 OK2BJ in decoded directed-looking exchanges:

OA4ENG · Peru T22TT · Tuvalu ZL3ES · New Zealand TN8GD · Republic of the Congo

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 OK2BJ

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 · 99 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 206 km (approx.)
Last such locator decoded: 2026-09-19 20:37 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	OK2BJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-19 20:35	160m	+21 / -	RI1FJZ	- / -19	6	Partial capture
08-27 20:33	80m	- / -	DO8JB	-4 / -	8	Partial capture
08-27 20:31	80m	- / -	DK8HC	0 / -	4	Partial capture
08-27 20:31	80m	- / -	LZ2VQ	0 / -	2	Partial capture
08-27 20:30	80m	- / -	F5RRS	+4 / -	5	Partial capture
08-27 20:17	80m	+16 / -	RI1FJL	- / -11	22	Partial capture
08-27 20:01	80m	+14 / -	RI1FJL	- / -	16	Partial capture
08-27 19:46	80m	+10 / -	RI1FJL	- / -	10	Partial capture
08-27 19:40	80m	+11 / -	RI1FJL	- / -	4	Partial capture
08-27 19:35	80m	+13 / -	RI1FJL	- / -	5	Partial capture
08-27 19:24	80m	+9 / -	RI1FJL	- / -	10	Partial capture
08-27 19:11	80m	+19 / -	RI1FJL	- / -	19	Partial capture
08-27 05:32	40m	- / -	DJ0MAB	+9 / -	4	Partial capture
08-27 05:29	40m	+6 / -	ZL3ES	- / -19	7	✓ Closing fragment
08-27 05:14	40m	- / -	SQ8ECJ	-10 / -	2	Partial capture
08-27 05:12	40m	+1 / -	OA4ENG	- / -21	4	✓ Closing fragment
07-19 20:54	80m	+22 / -	TN8GD	- / -18	3	✓ Closing fragment
07-18 17:36	40m	+20 / -	T22TT	- / -23	4	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
203515 +20 2506  RI1FJZ OK2BJ JN99 (x6)

80m

UTC    dB Audio  Message
203130  +0 1662  OK2BJ LZ2VQ KN23
203130  +4 1853  OK2BJ F5RRS JN36
203130  +3  565  OK2BJ DK8HC JO42
203200  +7 1853  OK2BJ F5RRS JN36
203200  -5  565  OK2BJ DK8HC JO42
203230  +3 1853  OK2BJ F5RRS JN36
203230  -3  565  OK2BJ DK8HC JO42
203300  -8  426  OK2BJ DO8JB JO32 (x8)

40m

UTC    dB Audio  Message
051315  -5 2704  OA4ENG OK2BJ R-21 (x2)
051400 -10 2704  OK2BJ SQ8ECJ KO00 (x2)
052900  +7 2867  ZL3ES OK2BJ JN99 (x7)
053215  +8 2867  OK2BJ DJ0MAB JN49 (x4)

20m

UTC    dB Audio  Message
045615  +1  464  OK2BJ RN6LPL/3 -12

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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