SP8JRG — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: KO10

Receiver-side FT8 activity involving SP8JRG, decoded by SO8OO in southeastern Poland. 44 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 5 UTC dates in the available aggregate history. Observed between 2026-09-04 and 2026-09-21.

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 44 FT8 messages attributed to SP8JRG as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (50%), followed by 40 m (50%). Most decodes (59%) fell within the six-hour window 05:00-11:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (91%); the estimated median was +1 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

+1 dB

Estimated median S/N

Bands

80m · 22 40m · 22

First attributed message: 2026-09-04
Last attributed message: 2026-09-21 10:33 UTC

Observed FT8 message patterns

Attributed sample: 44 messages
Active dates: 5 UTC dates
Estimated median S/N: +1 dB
Estimated 10th-90th percentile: -6 to +15 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 3, moderate (-15 to -9 dB) 1, 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 SP8JRG in decoded directed-looking exchanges:

SQ7OBB · Poland ×2 SP4GDW · Poland SP4VIT · Poland SP4WSL · Poland SP8K · Poland SP9KKA · 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 SP8JRG

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: KO10 · 30 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 106 km (approx.)
Last such locator decoded: 2026-09-21 10:31 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	SP8JRG S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-21 10:34	40m	- / -	S53AK	0 / -	2	Partial capture
09-21 10:33	40m	- / -	9A4ZM	-9 / -	2	Partial capture
09-21 10:33	40m	- / +1	DK7ZT	-21 / -	3	Partial capture
09-21 10:30	40m	-2 / -13	SP4WSL	-8 / -1	8	✓ Full exchange observed
09-21 10:24	40m	-5 / -	SP4VIT	-11 / -2	7	✓ Full exchange observed
09-21 10:21	40m	-1 / -	SP4WSL	- / -	4	Partial capture
09-21 05:57	80m	- / -	SP1ZMO	-3 / -	5	Partial capture
09-21 05:54	80m	+16 / 0	SQ7OBB	+1 / +7	7	✓ Full exchange observed
09-21 05:54	80m	- / -1	DK7ZT	0 / -	5	Partial capture
09-20 05:44	40m	- / -	DK7ZT	-2 / -	2	Partial capture
09-20 05:44	40m	- / -	DL9KM	-10 / -	7	Partial capture
09-20 05:44	40m	- / -	PE1NPS	+2 / -	4	Partial capture
09-20 05:42	40m	-16 / -11	SP4GDW	-1 / -8	5	✓ Full exchange observed
09-20 05:41	40m	- / -	SP6CVB	+9 / -	3	Partial capture
09-20 05:40	40m	- / -	ON5HE	+5 / -	3	Partial capture
09-20 05:01	80m	- / -	YO6LM	+6 / -	2	Partial capture
09-20 04:58	80m	+12 / -14	SQ7OBB	-8 / -4	7	✓ Full exchange observed
09-20 04:57	80m	- / +5	SP4DIS	+16 / -	2	Partial capture
09-14 14:38	40m	+2 / -	SP9CXN	- / -	2	Partial capture
09-14 14:38	40m	- / +9	DK6WS	-12 / -	2	Partial capture
09-14 14:38	40m	- / -	9A4ZM	+4 / -	2	Partial capture
09-14 14:37	40m	- / -5	F1PBZ	-15 / -	4	Partial capture
09-12 18:00	80m	+5 / +3	SP9KKA	+7 / -4	8	✓ Full exchange observed
09-04 12:35	80m	+10 / -	SP8K	+3 / -	8	✓ Full exchange observed
08-03 12:41	20m	- / -1	S57FF	-2 / -	6	Partial capture
08-03 12:39	20m	- / -	DF0KK	+3 / -	3	Partial capture
08-03 12:38	20m	- / -	YO5PHL	-18 / -	3	Partial capture
08-03 12:38	20m	- / -18	YO9PH	-10 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
103015  -3 1359  SP4WSL SP8JRG KO10 (x4)
103230 -12 1429  SP8JRG SP4WSL -13
103245  -4 2087  SP4WSL SP8JRG R-01
103300  -3 1430  SP8JRG SP4WSL RR73
103315  -1 2087  SP4WSL SP8JRG 73
103330 -21 1907  SP8JRG DK7ZT +01
103330  -9 2082  SP8JRG 9A4ZM JN86
103400  +2  944  SP8JRG S53AK JN76
103400 -21 1907  SP8JRG DK7ZT +01
103400  -9 2082  SP8JRG 9A4ZM JN86
103430  -2  944  SP8JRG S53AK JN76
103430 -22 1906  SP8JRG DK7ZT +01

80m

UTC    dB Audio  Message
055500  +2 1149  SP8JRG DK7ZT -01
055515 +16 1497  SQ7OBB SP8JRG KO10
055530  +2 1403  SP8JRG SQ7OBB +00
055530  -2 1149  SP8JRG DK7ZT -01
055545 +16 1497  SQ7OBB SP8JRG KO10
055600  +0 1403  SP8JRG SQ7OBB +00
055600  -4 1149  SP8JRG DK7ZT -01
055615 +15 1497  SQ7OBB SP8JRG R+07
055630  +4 1149  SP8JRG DK7ZT -01
055645 +14 1497  SQ7OBB SP8JRG 73
055700  -6 1496  SP8JRG SP1ZMO JO73 (x5)

20m

UTC    dB Audio  Message
123845 -13 1967  SP8JRG YO9PH -18
123845 -24 1545  SP8JRG YO5PHL KN16 (x2)
123945  -7 1966  SP8JRG YO9PH -14
123945 -16 1545  SP8JRG YO5PHL KN16
123945  +0  515  SP8JRG DF0KK JO31
124115  +2 1495  SP8JRG S57FF JN76
124115 -16 1639  SP8JRG F4FSY -18
124115  +5  515  SP8JRG DF0KK JO31 (x2)
124315  +0  962  SP8JRG S57FF R-01 (x5)

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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