SQ5TDW — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving SQ5TDW, decoded by SO8OO in southeastern Poland. 1 FT8 messages attributed to this token as transmitter, on 20m, across 1 UTC dates in the available aggregate history. Last observed 2026-06-20.

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 1 FT8 messages attributed to SQ5TDW as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The available sample contains attributed decodes on 20 m (100%). The sample is too small to infer a recurring UTC-hour or received-S/N pattern.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

S/N pattern not inferred

Bands

20m · 1

First attributed message: 2026-06-20
Last attributed message: 2026-06-20 16:16 UTC

Observed FT8 message patterns

Attributed sample: 1 messages
Active dates: 1 UTC dates
S/N summary: Too few decodes
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with SQ5TDW in decoded directed-looking exchanges:

CT3MD · Madeira Islands F1PBZ · France YO4GOU · Romania 9A4ZM · Croatia DL6UM · Fed. Rep. of Germany OE3DXA · Austria

Most frequent locator attributed to SQ5TDW

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
SO8OO receiver locator: KN09VW
Locator-centre separation: 290 km (approx.)
Last such locator decoded: 2026-06-20 16:16 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	SQ5TDW S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-19 12:37	40m	- / -16	OH3MB	-17 / -	2	Partial capture
09-19 12:35	40m	- / -17	9A4ZM	-5 / -	3	✓ Closing fragment
09-01 11:24	40m	- / -11	IR7MGGC	-20 / -	2	Partial capture
08-14 14:15	20m	- / -9	E70SZ	-16 / -	6	Partial capture
08-09 16:19	20m	- / -	OE3JBS	-14 / -	2	Partial capture
08-09 15:53	40m	- / -	DL6UM	-9 / -	2	✓ Closing fragment
08-09 14:26	20m	- / -11	DK2MAX	-14 / -	2	Partial capture
08-08 17:21	10m	- / -18	F1PBZ	-4 / -	2	✓ Closing fragment
08-08 12:54	20m	- / -	PD3LKN	-22 / -	6	Partial capture
08-02 18:24	10m	- / -24	CT3MD	-5 / -	3	✓ Closing fragment
07-25 13:48	20m	- / -13	F1PSX	-11 / -	13	Partial capture
07-19 13:46	20m	- / -	SP3DLD	-16 / -	2	Partial capture
07-19 13:22	20m	- / -19	YO4GOU	-9 / -	4	✓ Closing fragment
07-19 11:09	40m	- / -11	SQ8KMP	-14 / -	2	Partial capture
07-19 11:02	40m	- / -19	UT4PA	-15 / -	5	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
110330 -17 1530  SQ5TDW UT4PA KO20 (x3)
110930 -14 1876  SQ5TDW SQ8KMP KO11 (x2)
143600 -21 1526  SQ5TDW SQ4WMA KO14
155300  -9  553  SQ5TDW DL6UM JO60 (x2)
112430 -22 1740  SQ5TDW IR7MGGC -11 (x2)
123515  -4 1526  SQ5TDW 9A4ZM JN86 (x3)
123715 -18 1120  SQ5TDW OH3MB KP20 (x2)

20m

UTC    dB Audio  Message
125730 -22 1556  SQ5TDW PD3LKN JO22 (x2)
142630 -13 2524  SQ5TDW DK2MAX JN58 (x2)
161900 -12 2115  SQ5TDW OE3JBS JN78 (x2)
134330 -17 1330  SQ5TDW RA6FSV LN05
141530 -22 1556  SQ5TDW E70SZ JN84 (x6)
150245 -22 1566  SQ5TDW PD3LKN JO22
150445 -20 2330  SQ5TDW M7PHE IO93

10m

UTC    dB Audio  Message
182400  -5 1555  SQ5TDW CT3MD IM13 (x3)
172130  -4 2732  SQ5TDW F1PBZ -18 (x2)

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