SP5TWA — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

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. 231 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 26 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-11-05.

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 231 FT8 messages attributed to SP5TWA as the transmitting token by decoded message structure across 26 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (37%), followed by 160 m (32%) and 40 m (29%). 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 -7 dB.

Overview

231

Messages attributed

UTC dates decoded

Active 15-min windows

-7 dB

Estimated median S/N

Bands

160m · 73 80m · 85 40m · 66 20m · 7

First attributed message: 2026-06-12
Last attributed message: 2026-11-05 22:22 UTC

Observed FT8 message patterns

Attributed sample: 231 messages
Active dates: 26 UTC dates
Estimated median S/N: -7 dB
Estimated 10th-90th percentile: -16 to +5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 31, moderate (-15 to -9 dB) 69, strong (≥ -8 dB) 131.

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:

PA0MUS · Netherlands ×2 LX1JX · Luxembourg OH7XI · Finland OK1TP · Czech Republic PA3FR · Netherlands SP9UPH · Poland YL3CW · Latvia JE1LFX · Japan DL7ACA · Fed. Rep. of Germany EB3DBR · Spain SA4CFJ · Sweden US8KA · Ukraine

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 · 107 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 290 km (approx.)
Last such locator decoded: 2026-11-05 22:21 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
11-05 22:21	80m	0 / +6	US8KA	+18 / -	5	✓ Full exchange observed
11-05 22:16	160m	-16 / -	OH0Z	- / -	4	Partial capture
11-05 22:10	40m	- / -16	DL7ACA	+3 / -	4	✓ Closing fragment
11-03 20:09	160m	-11 / -15	OH7XI	0 / +5	4	✓ Full exchange observed
11-02 21:03	80m	-14 / -	SA4CFJ	-8 / -	2	✓ Closing observed
11-02 20:50	40m	- / -13	EB3DBR	-5 / -	2	✓ Closing fragment
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

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
190715  +8 1412  SP100PKP SP5TWA KO02
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
202100 -17 1276  I1RJP SP5TWA KO02
204100 -14  800  TK/DH7SB SP5TWA R+01
210300 -14 1254  SA4CFJ SP5TWA KO02
210445  -8  344  SP5TWA SA4CFJ RR73
203130  +0  313  SP5TWA PF40EUDXF -15
222130  +7 1437  US8KA SP5TWA KO02
222145 +15  456  SP5TWA US8KA +06
222200  +1 1437  US8KA SP5TWA R+21
222215 +21  456  SP5TWA US8KA RR73
222230  -9 1437  US8KA SP5TWA 73

160m

UTC    dB Audio  Message
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)
200915 -11  956  OH7XI SP5TWA KO02
200930  +0 1822  SP5TWA OH7XI -15
200945 -11  955  OH7XI SP5TWA R+05
201000  -1 1822  SP5TWA OH7XI RR73
221615 -16 1101  OH0Z SP5TWA KO02 (x4)

40m

UTC    dB Audio  Message
205015  -5  473  SP5TWA EB3DBR -13 (x2)
215900 -13  532  SP5TWA PC40EUDXF -11
220930  +4  410  SP5TWA PE40EUDXF -17
221000  +5  410  SP5TWA RR73; DH7ZP <...> -14
221030  +4 2751  SP5TWA DL7ACA JO40 (x4)

20m

UTC    dB Audio  Message
203000  -6 2633  JE1LFX SP5TWA 73
200515  -4  537  SP5TWA HS0ZOY -11
200615  -8 1408  SP5TWA F4BJN JN25 (x4)

10m

UTC    dB Audio  Message
201730 -23 1558  SP5TWA IV3IBK +09

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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