SP5TWA — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving SP5TWA, decoded by SO8OO in southeastern Poland. 219 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 23 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-09-08.

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 219 FT8 messages attributed to SP5TWA as the transmitting token by decoded message structure across 23 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (36%), followed by 160 m (31%) and 40 m (30%). Several six-hour UTC windows tied for the largest share (98%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -6 dB.

Overview

219

Messages attributed

UTC dates decoded

Active 15-min windows

-6 dB

Estimated median S/N

Bands

160m · 67 80m · 79 40m · 66 20m · 7

First attributed message: 2026-06-12
Last attributed message: 2026-09-08 19:11 UTC

Observed FT8 message patterns

Attributed sample: 219 messages
Active dates: 23 UTC dates
Estimated median S/N: -6 dB
Estimated 10th-90th percentile: -16 to +5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 28, moderate (-15 to -9 dB) 62, strong (≥ -8 dB) 129.

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 SP5TWA in decoded directed-looking exchanges:

TM2WWA · France ×3 DA0WWA · Fed. Rep. of Germany ×3 SN4WWA · Poland ×3 UA9QFF · Asiatic Russia ×2 9A2AJ · Croatia ×2 DL4BBY · Fed. Rep. of Germany ×2 CR2WWA · Azores ×2 GB2WWA · England ×2 II3WWA · Italy ×2 PA0MUS · Netherlands ×2 CE2SV · Chile CN2DX · Morocco

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 SP5TWA

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 · 99 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 290 km (approx.)
Last such locator decoded: 2026-09-08 19:11 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	SP5TWA S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-08 19:11	80m	+12 / -	R73SLET	- / +4	2	Partial capture
09-08 19:06	80m	+6 / -	SP100PKP	- / -	2	Partial capture
09-04 19:22	160m	-13 / +1	OK1TP	+2 / -	3	✓ Closing observed
08-18 20:09	160m	-12 / +1	YL3CW	0 / -	4	✓ Full exchange observed
08-18 20:03	160m	- / -6	SP9UPH	+10 / -	3	✓ Closing fragment
08-18 20:02	160m	-14 / -8	PA3FR	+7 / -	3	✓ Closing observed
08-18 19:59	160m	-17 / -14	LX1JX	-4 / -	4	✓ Closing observed
08-18 19:55	80m	+5 / -3	<...>	+4 / +3	3	Partial capture
08-18 19:51	80m	+8 / -	IQ4JO	- / -	2	Partial capture
08-18 19:49	80m	0 / -	PA0MUS	-6 / -1	4	✓ Closing observed
08-18 19:45	80m	+2 / -	<...>	- / +8	2	Partial capture
08-18 19:39	80m	+8 / -3	<...>	+10 / -4	3	Partial capture
08-15 20:06	20m	- / -	F4BJN	-10 / -	4	Partial capture
08-09 08:56	10m	- / -17	TA1SW	-22 / -	2	✓ Closing fragment
08-05 20:36	160m	- / -10	OZ3DTP	-5 / -	2	Partial capture
08-05 20:25	160m	-14 / -10	DL4BBY	-16 / -13	4	✓ Full exchange observed
08-05 20:20	160m	-13 / -15	DO3VE	0 / -24	4	Partial capture
08-05 20:15	160m	- / -14	DO3VE	-6 / -	2	Partial capture
08-05 20:14	160m	-22 / -10	LA6YEA	-4 / -	2	Partial capture
08-05 20:10	160m	-13 / -3	SQ2BXI	+18 / -	5	✓ Full exchange observed
07-27 18:41	20m	- / -10	LX1TI	+2 / -	2	Partial capture
07-24 21:02	10m	- / -	PD0IFI	-10 / -	2	✓ Closing fragment
07-24 20:19	40m	-15 / -	RX9UCF	- / -5	3	✓ Closing fragment
07-24 20:09	40m	-6 / -	JF6XQJ	- / -	2	✓ Closing fragment
07-24 20:07	40m	-15 / -3	HA1TIB	-14 / -	5	✓ Closing observed
07-24 20:03	40m	- / +4	PA3AGN	-16 / -	2	Partial capture
07-23 19:53	20m	- / -2	GW/VK5PO	-2 / -	2	Partial capture
07-23 19:32	20m	- / -14	GM4ZTO	-10 / -	2	Partial capture
07-21 19:50	160m	-8 / -17	SQ7PKP	+12 / -	3	✓ Closing observed
07-16 19:49	80m	+5 / +7	OL900JAR	+2 / 0	4	Partial capture
07-13 19:42	80m	+4 / -	SP0YAGI	- / -2	2	Partial capture
07-09 22:23	20m	- / -3	4X1UF	-14 / -	2	✓ Closing fragment
07-09 21:24	80m	+7 / -19	<...>	-6 / -2	3	Partial capture
07-09 21:16	160m	-12 / -12	YL3KZ	-3 / -8	10	✓ Full exchange observed
07-09 21:12	160m	-9 / -5	SQ2PHC	+2 / -	4	✓ Closing observed
07-07 20:51	160m	-6 / -	UI6L	- / -	2	Partial capture
07-07 20:49	160m	-5 / -	DL3RC	-10 / -1	4	✓ Full exchange observed
07-07 20:46	160m	-3 / +1	9A2AJ	+14 / +9	5	✓ Full exchange observed
07-07 20:37	160m	-4 / -12	DD3KF	-18 / -10	5	✓ Full exchange observed
07-07 20:35	160m	-5 / +2	R1NW	-20 / -6	4	✓ Full exchange observed
07-07 20:32	160m	-3 / -1	DL8OH	+18 / -	6	✓ Full exchange observed
07-07 20:10	40m	-8 / -	G4MHJ	- / -12	3	Partial capture
07-07 20:02	40m	- / -	RA5BQ	-14 / -	2	✓ Closing fragment
07-07 19:59	40m	-10 / -	UN8DSW	- / -	2	✓ Closing fragment
07-07 19:53	40m	-7 / -	ON5LW	- / -	2	✓ Closing fragment
07-05 20:29	80m	-5 / -13	GB2WWA	-6 / -7	4	✓ Full exchange observed
07-05 20:26	80m	0 / -21	OP0WWA	-3 / 0	5	✓ Full exchange observed
07-05 18:44	40m	-19 / -	US2UM	0 / +10	3	✓ Closing observed
07-05 18:42	40m	-19 / -10	GB2WWA	-12 / -5	4	✓ Full exchange observed
07-05 06:06	80m	-8 / -4	SN4WWA	-19 / +8	4	✓ 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
194900  +0 1316  PA0MUS SP5TWA KO02 (x2)
194945  -6 2247  SP5TWA PA0MUS RR73
195000  -3 1316  PA0MUS SP5TWA 73
195145 +10 2554  IQ4JO SP5TWA KO02 (x2)
195530  +1  888  <...> SP5TWA KO02
195545  +4 1102  SP5TWA <...> -03
195600  +9  888  <...> SP5TWA R+03
190645  +5 1412  SP100PKP SP5TWA KO02 (x2)
191115  +8  903  R73SLET SP5TWA KO02
191130 +13 2204  SP5TWA 3Z100PKP +01
191145 +17  903  R73SLET SP5TWA R+04
191200  +9 2204  SP5TWA RR73; SP3IOE <...> -06

160m

UTC    dB Audio  Message
200030  -4 2492  SP5TWA LX1JX RR73 (x2)
200200  +6  533  SP5TWA PA3FR -08 (x2)
200245 -14 2648  PA3FR SP5TWA 73
200330 +14  879  SP5TWA SP9UPH JO90 (x3)
200915  +0 2132  SP5TWA YL3CW +01
200930 -10 2649  YL3CW SP5TWA R+17
201115  -1 2132  SP5TWA YL3CW RR73
201130 -13  906  YL3CW SP5TWA 73
192230 -13 1033  OK1TP SP5TWA KO02
192245  +5 1821  SP5TWA OK1TP +01 (x2)

20m

UTC    dB Audio  Message
065615 -10 2652  SP5TWA PD0HLA -20
204600  -7  828  SP5TWA TN8GD RR73
193245  -8  600  SP5TWA GM4ZTO -14 (x2)
195330  -5 2830  SP5TWA GW/VK5PO -02 (x2)
172545 -24 1629  SP5TWA JA0LFV RR73
184145  +2  452  SP5TWA LX1TI -10 (x2)
203000  -6 2633  JE1LFX SP5TWA 73
200515  -4  537  SP5TWA HS0ZOY -11
200615  -8 1408  SP5TWA F4BJN JN25 (x4)

10m

UTC    dB Audio  Message
191645 -10 2385  SP5TWA TM2WWA RR73
184945 -12  682  SP5TWA TM8WWA -15
180430 -15 1600  SP5TWA 9K2HN -06
180630  -6 2677  SP5TWA IU8ADS 73
181430 -16 1362  SP5TWA RA3QTT -02
210230  -7  718  SP5TWA PD0IFI R+14
210300 -17  949  SP5TWA UR9QQ KN77
210300 -13  718  SP5TWA PD0IFI 73
205500 -15 1142  SP5TWA PY9AA -08
194215  -8 2585  SP5TWA CE2SV RR73
085645 -23 1404  SP5TWA TA1SW -17 (x2)
085715 -24 1938  SP5TWA R6BH +00
085915 -16  830  SP5TWA TA7D +08
201730 -23 1558  SP5TWA IV3IBK +09

40m

UTC    dB Audio  Message
200415 -17 1142  SP5TWA PA3AGN R+04
200645  -9  488  JF6XQJ SP5TWA KO02
200730 -17 1308  SP5TWA HA1TIB JN86 (x3)
200845 -15 2587  HA1TIB SP5TWA RR73
200900 -10 1308  SP5TWA HA1TIB 73
200945  -7 2586  JF6XQJ SP5TWA RR73 (x2)
201200 -14  969  SP5TWA HF170TESLA +02
201215  -7 2585  <...> SP5TWA R+12
201315  -6 2586  DS5USH SP5TWA KO02
201915 -15 1440  RX9UCF SP5TWA KO02 (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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