SP7JBG — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: HE91

Receiver-side FT8 activity involving SP7JBG, decoded by SO8OO in southeastern Poland. 38 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-08-24 and 2026-09-06.

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 38 FT8 messages attributed to SP7JBG as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (92%), followed by 40 m (8%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (61%); the estimated median was -7 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-7 dB

Estimated median S/N

Bands

40m · 3 20m · 35

First attributed message: 2026-08-24
Last attributed message: 2026-09-06 01:11 UTC

Observed FT8 message patterns

Attributed sample: 38 messages
Active dates: 4 UTC dates
Estimated median S/N: -7 dB
Estimated 10th-90th percentile: -19 to +2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 8, moderate (-15 to -9 dB) 7, 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 SP7JBG in decoded directed-looking exchanges:

W3YNI · United States WA0DYJ · United States

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 SP7JBG

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: HE91 · 38 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 11,685 km (approx.)
Last such locator decoded: 2026-09-06 01:11 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	SP7JBG S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-06 01:10	40m	-2 / -	N4LU	- / -	3	Partial capture
08-30 21:54	20m	-21 / -	KD6KHK	- / -	4	Partial capture
08-28 22:40	20m	- / -1	K1RI	+6 / -	2	Partial capture
08-27 21:52	20m	+2 / -	KG4OJT	- / -	4	Partial capture
08-27 21:46	20m	- / -17	EA4T	+1 / -	2	Partial capture
08-27 21:44	20m	-7 / -	RI1FJL	- / -	10	Partial capture
08-27 21:41	20m	- / -21	EA4T	-5 / -	3	Partial capture
08-27 21:39	20m	-1 / -	KB3VNG	- / -	9	Partial capture
08-27 21:37	20m	-14 / -	RI1FJL	- / -	2	Partial capture
08-24 22:02	20m	- / -	CR7BUJ	-6 / -	2	Partial capture
08-24 21:47	20m	-15 / -	W6NWS	- / -	2	Partial capture
08-24 21:38	20m	- / -	EA5RU	-19 / -	3	Partial capture
08-24 21:33	20m	- / -	EA5RU	-22 / -	2	Partial capture
08-24 21:26	20m	- / -6	W3YNI	-11 / -	3	✓ Closing fragment
08-24 21:23	20m	- / -	EA7FDM	-3 / -	4	Partial capture
08-24 21:14	20m	- / -13	WA0DYJ	-6 / -	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
011015  +1 2150  N4LU SP7JBG HE91 (x3)

20m

UTC    dB Audio  Message
214715  -9 3096  RI1FJL SP7JBG HE91 (x4)
215200  +4 3096  KG4OJT SP7JBG HE91 (x4)
224000  +9  959  SP7JBG K1RI -01 (x2)
215445 -22 2187  KD6KHK SP7JBG HE91 (x4)
221430 -19 2188  KS4OT SP7JBG HE91

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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