SP3XR — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JO72

Receiver-side FT8 activity involving SP3XR, decoded by SO8OO in southeastern Poland. 266 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 22 UTC dates in the available aggregate history. Observed between 2026-07-02 and 2026-09-14.

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 266 FT8 messages attributed to SP3XR as the transmitting token by decoded message structure across 22 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (61%), followed by 40 m (25%) and 80 m (14%). Most decodes (69%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7 dB.

Overview

266

Messages attributed

UTC dates decoded

Active 15-min windows

-7 dB

Estimated median S/N

Bands

80m · 37 40m · 67 20m · 162

First attributed message: 2026-07-02
Last attributed message: 2026-09-14 20:24 UTC

Observed FT8 message patterns

Attributed sample: 266 messages
Active dates: 22 UTC dates
Estimated median S/N: -7 dB
Estimated 10th-90th percentile: -18 to +2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 42, moderate (-15 to -9 dB) 71, strong (≥ -8 dB) 153.

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 SP3XR in decoded directed-looking exchanges:

3A2MW · Monaco 4L1MA · Georgia 4X1UF · Israel 9K2OK · Kuwait A61QQ · United Arab Emirates A71QQ · Qatar CR2WWA · Azores F4FSY · France F4HPW · France F4HSB · France F4HTA · France GM2TT · Scotland

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 SP3XR

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: JO72 · 170 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 552 km (approx.)
Last such locator decoded: 2026-09-14 20:22 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	SP3XR S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-14 20:22	80m	+6 / -19	SP7ENZ	+9 / -4	4	Partial capture
09-14 20:22	80m	+1 / -3	DA7T	-8 / -11	4	✓ Full exchange observed
09-14 20:18	80m	+4 / +4	DK8CX	+4 / -	3	✓ Closing observed
09-14 20:15	80m	-3 / -13	DH8BAB	+4 / +5	5	✓ Full exchange observed
09-14 20:09	80m	-6 / -18	DL4AC	-11 / -	3	✓ Closing observed
09-13 19:59	80m	+10 / -	DO3PKE	+5 / -	2	✓ Closing observed
09-13 19:58	80m	+9 / -10	DL9KM	-2 / -	5	✓ Closing observed
09-13 19:57	80m	-1 / -21	UR4QWW	0 / -21	10	✓ Full exchange observed
09-13 19:49	80m	0 / -	HB3YPJ	-14 / -15	11	✓ Closing observed
09-13 19:48	80m	-2 / -	F4CYH	-22 / -16	3	✓ Closing observed
09-13 19:46	60m	- / -	9A4ZM	-3 / -	2	Partial capture
09-13 10:55	40m	+2 / -	PD2MAC/P	- / -23	3	✓ Closing fragment
09-13 10:51	40m	+1 / -	MW3FLI	- / -17	6	✓ Closing fragment
09-13 10:47	40m	-5 / -	ON6SAT	- / +2	3	✓ Closing fragment
09-13 10:45	40m	-10 / -	ON5VKE	- / -12	3	✓ Closing fragment
09-13 10:42	40m	-3 / -	MW3FLI	- / -	3	Partial capture
09-12 17:36	80m	-5 / -9	DL/AD2LX	-19 / -14	2	Partial capture
09-11 10:05	40m	- / +2	DK1XAM	-10 / -	2	Partial capture
09-11 10:04	40m	-11 / -13	UT4PA	-3 / -13	5	✓ Full exchange observed
09-05 15:57	40m	- / -	SP6FME	+7 / -	3	Partial capture
09-05 15:56	40m	- / -13	T77NC	-8 / -	2	✓ Closing fragment
09-05 15:48	40m	+7 / -	T77NC	- / -	3	Partial capture
09-04 18:01	40m	-1 / -	C31KC	- / -	3	Partial capture
09-04 12:38	40m	-1 / -9	OZ/KD0NDU	-15 / -5	3	Partial capture
09-04 12:36	40m	-6 / -	ON5JDB	- / -	3	Partial capture
09-03 18:14	40m	-4 / -	PD7FS	- / -7	8	Partial capture
09-03 18:06	40m	0 / -	F1IQH	- / -19	2	Partial capture
09-03 18:05	40m	-6 / -	OV5SP	-11 / -10	3	✓ Closing observed
09-03 17:58	40m	- / -3	DL6UM	+2 / -	2	✓ Closing fragment
09-03 17:58	40m	-9 / -	DG3DAF	-7 / -11	6	✓ Closing observed
09-03 16:59	40m	-4 / -	YD2DFO	- / -	2	Partial capture
08-15 14:32	20m	- / -9	F4HSB	-14 / -	2	✓ Closing fragment
08-15 14:18	20m	- / +1	R3KCW	-10 / -	2	Partial capture
08-09 17:15	20m	-16 / -	A92AA	- / -	3	Partial capture
08-09 17:03	20m	- / -18	PI4DX	+2 / -	2	✓ Closing fragment
08-09 16:53	20m	-17 / -	EK1KE	- / -19	5	Partial capture
08-09 16:51	20m	-16 / -	LA2PIA	- / -	2	✓ Closing fragment
08-09 16:49	20m	-9 / -	4L1MA	- / -	2	Partial capture
08-09 16:43	20m	-12 / -8	4L1MA	-14 / -3	6	✓ Full exchange observed
08-09 16:39	20m	-17 / -	LA2PIA	- / -	3	Partial capture
08-09 16:34	20m	- / -12	A61QQ	-8 / -	2	✓ Closing fragment
08-08 17:18	20m	-3 / -	OE3AAS	- / -11	3	✓ Closing fragment
07-30 19:47	20m	-16 / -	JH5AVM	- / -22	6	✓ Closing fragment
07-28 20:06	20m	- / -20	OS9T	-10 / -	2	✓ Closing fragment
07-25 19:41	20m	- / -	IU5HIU	-8 / -	5	Partial capture
07-24 20:17	20m	-9 / -	BI8SCC	- / -	5	Partial capture
07-23 18:17	20m	- / -17	TN8GD	-11 / -	3	✓ Closing fragment
07-22 18:41	20m	-5 / -	HB9HNU	- / -	6	Partial capture
07-21 20:15	20m	- / -6	TA7D	0 / -	12	✓ Closing fragment
07-19 17:34	20m	+1 / -	A61SD	- / -	10	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
201830  +5  902  SP3XR DK8CX R+04
201845  +4  902  DK8CX SP3XR RRR
201900  +2  902  SP3XR DK8CX 73
202015  +0  902  CQ SP3XR JO72 (x3)
202200 +14 2576  SP3XR HF5A JO92
202215  -2  902  DA7T SP3XR JO72
202230  +7 1266  SP3XR SP7ENZ -19
202230 -13  635  SP3XR DA7T -03
202245  +4  636  DA7T SP3XR R-11
202300  -3  635  SP3XR DA7T RR73
202345  +7  636  SP7ENZ SP3XR R-04 (x2)
202500 +11 1266  SP3XR SP7ENZ -14

60m

UTC    dB Audio  Message
194600  -5 1064  SP3XR 9A4ZM JN86 (x2)

40m

UTC    dB Audio  Message
104530 -12 1385  ON5VKE SP3XR R-12 (x2)
104745  -9 2105  ON6SAT SP3XR JO72 (x3)
105115  +1  676  MW3FLI SP3XR JO72 (x6)
105530  +6  494  PD2MAC/P SP3XR JO72 (x3)
105815 -13 1637  M7TPT SP3XR JO72

20m

UTC    dB Audio  Message
165230 -18 1859  LA2PIA SP3XR 73
165345 -13 1329  EK1KE SP3XR JO72 (x5)
170345  -3 1067  SP3XR PI4DX -18 (x2)
171545 -14 2177  A92AA SP3XR JO72 (x3)
141815  -7 1576  SP3XR R3KCW +01 (x2)
143215 -12 1368  SP3XR F4HSB -09 (x2)

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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