SP5GB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: KO02

Receiver-side FT8 activity involving SP5GB, decoded by SO8OO in southeastern Poland. 127 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 18 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-09.

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 127 FT8 messages attributed to SP5GB as the transmitting token by decoded message structure across 18 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (53%), followed by 40 m (30%) and 60 m (13%). Most decodes (63%) fell within the six-hour window 05:00-11:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

127

Messages attributed

UTC dates decoded

Active 15-min windows

-11 dB

Estimated median S/N

Bands

80m · 67 60m · 16 40m · 38 20m · 6

First attributed message: 2026-06-07
Last attributed message: 2026-09-09 06:40 UTC

Observed FT8 message patterns

Attributed sample: 127 messages
Active dates: 18 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -19 to -5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 24, moderate (-15 to -9 dB) 66, strong (≥ -8 dB) 37.

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 SP5GB in decoded directed-looking exchanges:

DK5UR · Fed. Rep. of Germany ×9 PA3GHJ · Netherlands ×2 IU0VOG · Italy UA4FEN · European Russia DA0WWA · Fed. Rep. of Germany HG8IT · Hungary II3WWA · Italy OE8PIT · Austria 3Z0L · Poland DG4KAI · Fed. Rep. of Germany DK5EI · Fed. Rep. of Germany DL1ASL · Fed. Rep. of Germany

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 SP5GB

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: KO02 · 78 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 290 km (approx.)
Last such locator decoded: 2026-09-07 13:15 UTC

Other locator fields attributed to this token: JO93 (9).

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	SP5GB S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-09 06:40	40m	-18 / -8	DK5UR	+2 / -	3	✓ Closing observed
09-07 13:20	40m	-10 / -11	SP6DZN	-8 / -	4	✓ Full exchange observed
09-07 13:18	40m	-10 / -7	DL1ASL	-21 / -1	5	✓ Full exchange observed
09-07 13:17	40m	-14 / -	DK5EI	- / -13	2	✓ Closing fragment
09-07 13:16	40m	-10 / -3	DK5UR	-8 / 0	5	✓ Full exchange observed
09-06 20:46	80m	- / -17	SO100PKP	+12 / -	2	Partial capture
09-06 20:40	80m	- / -20	3Z100PKP	+15 / -	2	Partial capture
09-03 15:55	40m	-7 / +1	3Z0L	-2 / 0	5	✓ Full exchange observed
09-03 15:53	40m	-6 / -	F1LPT/P	- / -19	3	✓ Closing fragment
09-03 09:24	40m	-5 / -	DK5UR	-8 / -10	5	✓ Closing observed
09-03 06:43	40m	-8 / -22	DK5UR	-3 / -11	8	✓ Full exchange observed
09-02 08:24	40m	-11 / -13	DK5UR	-6 / -	5	✓ Closing observed
09-01 08:35	40m	-22 / -	PA3GHJ	- / -8	5	✓ Closing fragment
08-29 02:04	60m	- / -17	SP2FWC	-5 / -	2	✓ Closing fragment
08-29 02:01	60m	- / -5	YO6LM	+1 / -	2	✓ Closing fragment
08-16 10:48	20m	-8 / -	OE8PIT	- / -15	2	✓ Closing fragment
08-16 09:25	20m	-7 / -	PD0PMF	- / -	2	Partial capture
07-31 18:07	40m	-8 / -1	DK5UR	-12 / -9	4	✓ Full exchange observed
07-19 00:12	80m	-11 / -5	SP9HAB	+1 / +1	4	✓ Full exchange observed
07-19 00:08	80m	-12 / -12	DL2EMU	-5 / -2	5	✓ Full exchange observed
07-18 23:45	80m	-10 / -6	YL2NX	-8 / -	4	✓ Closing observed
07-18 23:44	80m	-7 / -	UA4FKT	-6 / -2	5	✓ Closing observed
07-15 21:01	40m	- / -	OE5ROR	-14 / -	3	✓ Closing fragment
07-15 19:24	40m	-16 / -	DK5UR	-1 / -4	5	✓ Closing observed
07-12 06:10	40m	- / -1	DK5UR	-9 / -	2	✓ Closing fragment
07-12 05:18	40m	- / +9	DK5UR	-12 / -	2	✓ Closing fragment
07-03 10:11	20m	- / -24	II3WWA	-19 / -	5	✓ Closing fragment
06-29 21:51	80m	- / -19	SN2WWA	+4 / -	2	✓ Closing fragment
06-28 12:08	10m	- / -24	UA4FEN	-16 / -	2	✓ Closing fragment
06-27 07:07	40m	- / -1	DG4KAI	-20 / -	2	✓ Closing fragment
06-27 03:52	80m	-8 / -	PI4DX	- / -	3	Partial capture
06-26 15:21	20m	- / -6	HG8IT	-2 / -	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
131730 -15 1537  DK5EI SP5GB -13 (x2)
131815 -22 1538  SP5GB DL1ASL JO50 (x2)
131900 -10 1537  DL1ASL SP5GB -01
131915 -21 1537  SP5GB DL1ASL R-07
131930 -11 1537  DL1ASL SP5GB RR73
132015  -5 1473  SP5GB SP6DZN JO81
132030 -10 1537  SP6DZN SP5GB +20
132045 -10 1473  SP5GB SP6DZN R-11
132100 -11 1537  SP6DZN SP5GB RR73
082700 -22 1688  SP5GB PA3GHJ RR73
064015  +3  474  SP5GB DK5UR R-08
064030 -18 1538  DK5UR SP5GB RR73
064045  +1  475  SP5GB DK5UR 73

80m

UTC    dB Audio  Message
000845 -13 1709  DL2EMU SP5GB RR73
000900  -4 2859  SP5GB DL2EMU 73
000945 -15 1709  CQ POTA SP5GB JO93 (x4)
001245  -9 1709  SP9HAB SP5GB +01
001300  +1 1709  SP5GB SP9HAB R-05
001315 -13 1709  SP9HAB SP5GB RR73
001330  +1 1709  SP5GB SP9HAB 73
001445 -10 1709  CQ POTA SP5GB JO93
204030 +15 1309  SP5GB 3Z100PKP R-20 (x2)
204630 +13 2725  SP5GB SO100PKP R-17 (x2)

60m

UTC    dB Audio  Message
085845  -4  674  CQ POTA SP5GB KO02 (x6)
020100  -3 2195  SP5GB YO6LM -05 (x2)
020430  -3  893  SP5GB SP2FWC -17 (x2)

20m

UTC    dB Audio  Message
101130 -20 1721  SP5GB II3WWA -24 (x5)
102030 +13 2742  SP5GB DA0WWA RR73
141830  -5 2645  SP5GB TM40TFR -05 (x2)
064600  -5 1696  SP5GB R5AV -04
092530  -8  656  PD0PMF SP5GB KO02 (x2)
104715 -11 2518  CQ SP5GB KO02 (x2)
104845  -4 2515  OE8PIT SP5GB -15 (x2)

10m

UTC    dB Audio  Message
120800 -17 1710  SP5GB UA4FEN -24 (x2)
120930 -18 1209  SP5GB US3LX KN89
083745 -11  345  SP5GB IU0VOG RR73

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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