SP1O — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving SP1O, decoded by SO8OO in southeastern Poland. 116 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 11 UTC dates in the available aggregate history. Observed between 2026-06-18 and 2026-09-04.

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 116 FT8 messages attributed to SP1O as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (83%), followed by 60 m (11%) and 40 m (3%). Most decodes (89%) fell within the six-hour window 13:00-19:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (86%); the estimated median was 0 dB.

Overview

116

Messages attributed

UTC dates decoded

Active 15-min windows

0 dB

Estimated median S/N

Bands

80m · 3 60m · 13 40m · 4 20m · 96

First attributed message: 2026-06-18
Last attributed message: 2026-09-04 17:54 UTC

Observed FT8 message patterns

Attributed sample: 116 messages
Active dates: 11 UTC dates
Estimated median S/N: 0 dB
Estimated 10th-90th percentile: -11 to +11 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 11, strong (≥ -8 dB) 100.

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 SP1O in decoded directed-looking exchanges:

ER5GB · Moldova ×2 DG2SAT · Fed. Rep. of Germany 9N2WF · Nepal A99AA · Bahrain BG3NBD · China BG5BNW · China BG8HNC · China BH4THI · China HC2GRC · Ecuador IK4RVY · Italy LA2GCA · Norway RU4B · European Russia

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 SP1O

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 · 67 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 613 km (approx.)
Last such locator decoded: 2026-09-04 17:54 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	SP1O S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-31 17:35	20m	-18 / -2	IK4RVY	+2 / -	3	✓ Closing observed
08-30 14:56	20m	- / -11	RU4B	+6 / -	3	✓ Closing fragment
08-30 14:28	20m	- / -18	BG8HNC	-18 / -	2	✓ Closing fragment
08-21 09:25	10m	- / -	DG2SAT	-6 / -	3	✓ Closing fragment
08-20 17:56	20m	+9 / -	<...>	- / -6	11	Partial capture
08-20 17:35	20m	-2 / -	<...>	- / -	5	Partial capture
08-20 14:10	20m	+9 / -	CT1END/P	- / -	7	Partial capture
08-20 14:08	20m	+7 / -	R3PLN/P	- / -10	3	Partial capture
08-20 14:07	20m	+14 / -	CT1END/P	- / -	2	Partial capture
08-20 14:06	20m	+10 / -	<...>	- / -	2	Partial capture
07-13 17:56	20m	-10 / 0	F4HSB	-16 / -9	4	Partial capture
07-13 17:44	20m	-3 / -	YC2ALF	- / -7	4	✓ Closing fragment
07-13 17:42	20m	-17 / -	BG7ZHS	- / -14	3	Partial capture
07-13 17:33	20m	0 / -	9N2WF	- / -3	4	✓ Closing fragment
07-13 17:25	20m	-9 / -	BH4THI	- / -4	3	✓ Closing fragment
07-13 17:09	20m	-6 / -	VR2KF	- / -7	5	✓ Closing fragment
07-13 16:41	20m	-6 / -	BG3NBD	- / -8	2	✓ Closing fragment
07-13 16:32	20m	+11 / -	9N2WF	- / -	5	Partial capture
07-08 16:44	20m	+9 / -	HC2GRC	- / -2	9	✓ Closing fragment
07-08 16:34	40m	-11 / -	DL6EL	-19 / +1	5	✓ Full exchange observed
07-08 16:33	40m	-6 / +8	SN93LOT	-4 / +8	2	Partial capture
07-07 14:02	20m	+2 / -	LA2GCA	- / -4	2	✓ Closing fragment
07-07 13:58	20m	0 / -	TA3XEE	- / -12	3	Partial capture
07-07 13:56	20m	+3 / -	A99AA	- / -6	2	✓ Closing fragment
07-07 13:48	20m	0 / -	TA3RAM	- / -	9	Partial capture
07-06 16:49	20m	-8 / -11	<...>	-12 / -15	8	Partial capture
07-05 18:13	40m	-6 / -	ZS6KBS	- / -	2	Partial capture
06-24 20:00	60m	-2 / -6	DL9KM	-13 / -8	6	✓ Full exchange observed
06-24 19:59	60m	-11 / 0	ER5GB	-6 / -13	5	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
174830  +0 1547  9K2HN SP1O JO73 (x3)

20m

UTC    dB Audio  Message
180015  +7  793  <...> SP1O JO73 (x6)
180715 +11 2376  D2IM SP1O JO73
142815 -18 1282  SP1O BG8HNC -18 (x2)
145615  +6 2533  SP1O RU4B LN28 (x3)
173545  +3 1969  SP1O IK4RVY -02 (x2)
173630 -18 1969  IK4RVY SP1O 73

10m

UTC    dB Audio  Message
092500  -3  819  SP1O DG2SAT JN48 (x3)

40m

UTC    dB Audio  Message
181300  -4 2028  ZS6KBS SP1O JO73 (x2)
163300  -4 1255  SP1O SN93LOT +08
163315  -6 1254  SN93LOT SP1O R+08
163400 -18 1741  SP1O DL6EL JN57
163445 -11 1741  DL6EL SP1O +01
163530 -16 1741  SP1O DL6EL 73 (x3)

60m

UTC    dB Audio  Message
195900 -14 1587  ER5GB SP1O JO73
195915  -6 1587  SP1O ER5GB +00
195930  -8 1587  ER5GB SP1O R-13
195945  -6 1587  SP1O ER5GB RR73
200000 -11 1587  ER5GB SP1O 73
200015 -14 1266  SP1O DL9KM JN68 (x2)
200100  -3 1587  DL9KM SP1O -08
200115 -14 1266  SP1O DL9KM R-06
200130  -2 1266  DL9KM SP1O RR73
200145 -10 1266  SP1O DL9KM 73

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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