SP9KM — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving SP9KM, decoded by SO8OO in southeastern Poland. 469 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 26 UTC dates in the available aggregate history. Observed between 2026-07-23 and 2026-08-30.

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 469 FT8 messages attributed to SP9KM as the transmitting token by decoded message structure across 26 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (71%), followed by 80 m (29%). Most decodes (82%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (61%); the estimated median was -6 dB.

Overview

469

Messages attributed

UTC dates decoded

Active 15-min windows

-6 dB

Estimated median S/N

Bands

80m · 134 40m · 335

First attributed message: 2026-07-23
Last attributed message: 2026-08-30 19:57 UTC

Observed FT8 message patterns

Attributed sample: 469 messages
Active dates: 26 UTC dates
Estimated median S/N: -6 dB
Estimated 10th-90th percentile: -14 to +7 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 28, moderate (-15 to -9 dB) 155, strong (≥ -8 dB) 286.

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 SP9KM in decoded directed-looking exchanges:

SQ5EKY · Poland ×3 EA8UP · Canary Islands ×2 IQ4JO · Italy ×2 SV9MBH · Crete ×2 EA1IOK · Spain ×2 US2YW · Ukraine ×2 4X1UF · Israel ×2 YO4NF · Romania ×2 SP9UPH · Poland ×2 PA8S · Netherlands F1UNR · France F5PBG · France

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 SP9KM

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 · 83 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 206 km (approx.)
Last such locator decoded: 2026-08-22 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	SP9KM S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-29 20:28	80m	+2 / -12	SP9TEX	+10 / -1	5	✓ Full exchange observed
08-29 19:52	80m	-2 / +10	SQ7SE	+12 / -4	5	✓ Full exchange observed
08-29 19:37	80m	-12 / -	VK4XK	- / -11	4	Partial capture
08-28 22:13	40m	-22 / -	VK7AC	- / -16	2	Partial capture
08-28 22:04	20m	- / -13	KV4G	-14 / -	3	Partial capture
08-28 21:57	20m	- / -10	YV5AEZ	-10 / -	2	✓ Closing fragment
08-27 21:18	80m	+7 / -	LZ2VQ	- / -13	2	✓ Closing fragment
08-27 21:14	40m	-3 / -5	OM2WW	-10 / -	3	✓ Closing observed
08-27 21:12	40m	- / -	DL1EDR	-1 / -	3	Partial capture
08-27 21:04	20m	- / -	F5PBG	-6 / -	2	Partial capture
08-26 11:33	40m	-16 / -	IK1MJK/P	- / -21	2	Partial capture
08-26 11:32	40m	-8 / -	DC9GT	- / -19	2	Partial capture
08-26 11:30	40m	-10 / -	IK4LZH	- / -9	2	✓ Closing fragment
08-26 11:29	40m	-13 / -	PD4RJ	- / -14	3	✓ Closing fragment
08-26 11:28	40m	-2 / -	F1UNR	- / -22	2	✓ Closing fragment
08-26 11:27	40m	-4 / -	DJ0MAB	- / -14	2	✓ Closing fragment
08-23 22:02	40m	- / -6	4X1UF	-8 / -	2	✓ Closing fragment
08-23 11:18	40m	-2 / -	SQ5OMY	- / +2	17	Partial capture
08-22 20:37	40m	+2 / -	IN3LHF	-13 / -	2	✓ Closing observed
08-22 20:34	40m	+1 / -	YB2CLC	- / -15	3	Partial capture
08-22 20:30	40m	+1 / -	HL5BPF	- / -17	4	Partial capture
08-22 20:25	40m	-1 / -16	PA8S	-1 / -3	11	✓ Full exchange observed
08-22 20:24	40m	-1 / -	SP1ZMO	+2 / -11	5	Partial capture
08-22 20:24	40m	-6 / -5	RX3ASQ	-6 / -5	5	✓ Full exchange observed
08-22 20:24	40m	-5 / -20	UN7PPV	-16 / -16	3	Partial capture
08-22 20:22	40m	-3 / -	JI4WAO	- / -13	3	Partial capture
08-22 20:20	40m	-4 / +2	GI0FIX	-3 / -	3	✓ Closing observed
08-22 20:18	80m	+9 / -	LY1DY	- / -15	2	Partial capture
08-22 20:15	80m	+14 / -4	SQ5EKY	+4 / -	3	✓ Closing observed
08-22 20:07	80m	+10 / -	SQ5EKY	- / -11	2	✓ Closing fragment
08-22 20:05	80m	+12 / -	EA7LIC	- / -11	2	✓ Closing fragment
08-22 20:04	80m	+3 / -	S51CE	- / -11	2	Partial capture
08-22 20:01	80m	0 / -15	T77R	-14 / -12	4	✓ Full exchange observed
08-22 20:01	80m	-6 / -20	RA2FU	-3 / -18	9	✓ Full exchange observed
08-22 19:59	80m	+8 / +8	DK8CX	+2 / -5	5	✓ Full exchange observed
08-22 19:51	80m	-1 / -12	SQ5EKY	+6 / -11	3	✓ Full exchange observed
08-20 20:59	80m	- / -	DL6UM	-1 / -	2	Partial capture
08-20 20:58	80m	-1 / -15	UA4FKT	+3 / -6	5	Partial capture
08-20 20:57	80m	-5 / -6	DK7ZT	+7 / 0	5	✓ Full exchange observed
08-20 20:52	40m	- / -	F5RRS	0 / -	2	Partial capture
08-20 10:22	40m	-7 / -	DF1BN	- / -5	2	✓ Closing fragment
08-20 10:17	40m	-2 / -	SP9XG	- / -12	2	✓ Closing fragment
08-19 19:25	40m	-9 / -	SQ5OMY	- / -14	5	Partial capture
08-18 19:16	40m	-11 / -13	R2EA/P	-4 / -3	5	✓ Full exchange observed
08-18 19:13	40m	-10 / -	SQ5OMY	- / -13	11	Partial capture
08-18 16:50	40m	-6 / -	OH6IH	- / -11	2	✓ Closing fragment
08-18 16:48	40m	-9 / -2	SP6AMI	-5 / 0	4	✓ Full exchange observed
08-18 16:48	40m	-10 / -	SP5ROM	- / -12	2	✓ Closing fragment
08-18 15:41	40m	-8 / +3	SP6ZWD	-21 / +2	4	✓ Full exchange observed
08-18 15:38	40m	-8 / -	PE1NPS	- / -7	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
113130 -15 1396  IK4LZH SP9KM RR73
113200  -8 1396  DC9GT SP9KM -19 (x2)
113300 -17 1396  IK1MJK/P SP9KM -21 (x2)
211245  -3 1396  SP9KM DL1EDR JO41 (x3)
211415  -9 1395  SP9KM OM2WW R-05
211430  -3 1395  OM2WW SP9KM RR73
211445 -11 1395  SP9KM OM2WW 73
221330 -24 1396  VK7AC SP9KM -16 (x2)
194145  +0  919  SP9KM <...> R+04
195715  -4 1396  <...> SP9KM -08

80m

UTC    dB Audio  Message
193730 -17 1359  VK4XK SP9KM -11 (x2)
193900  -8 1359  SQ7SE SP9KM -08
194000 -10 1359  VK4XK SP9KM -13
195245  -3 1360  SQ7SE SP9KM -04 (x3)
195400 +10  873  SP9KM SQ7SE R+10 (x2)
195500  +1 1463  SP9KM SP1905MFK R-14
202800  +5 1359  SP9TEX SP9KM -01 (x2)
202845 +10 1566  SP9KM SP9TEX R-12
202900  +1 1360  SP9TEX SP9KM RR73
202915 +11 1566  SP9KM SP9TEX 73

20m

UTC    dB Audio  Message
210345 -17 1576  SP9KM 9K2OK 73
113700 -13 2656  SP9KM IQ4JO 73
194045  -6 1364  SP9KM MD0CCE R+18 (x2)
194145  +3 2766  SP9KM ON8MA JO10 (x2)
203045 -10  537  SP9KM HS0ZOY R-12
210330  -2 1434  SP9KM DK7ZT -04
210400  -7 1435  SP9KM F5PBG IN78 (x2)
215745 -11 1701  SP9KM YV5AEZ R-10 (x2)
220400 -14 1434  SP9KM KV4G R-13 (x3)

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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