SQ4KDM — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: KO14

Receiver-side FT8 activity involving SQ4KDM, decoded by SO8OO in southeastern Poland. 108 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 11 UTC dates in the available aggregate history. Observed between 2026-07-05 and 2026-09-02.

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 108 FT8 messages attributed to SQ4KDM as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (87%), followed by 80 m (13%). Several six-hour UTC windows tied for the largest share (84%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.

Overview

108

Messages attributed

UTC dates decoded

Active 15-min windows

-12 dB

Estimated median S/N

Bands

80m · 14 40m · 94

First attributed message: 2026-07-05
Last attributed message: 2026-09-02 04:40 UTC

Observed FT8 message patterns

Attributed sample: 108 messages
Active dates: 11 UTC dates
Estimated median S/N: -12 dB
Estimated 10th-90th percentile: -21 to +2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 31, moderate (-15 to -9 dB) 39, strong (≥ -8 dB) 38.

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 SQ4KDM in decoded directed-looking exchanges:

EU6KA · Belarus ×2 TA3TCW · Asiatic Turkey 3A2MW · Monaco DG1RMY · Fed. Rep. of Germany DL8TV · Fed. Rep. of Germany DM1RG · Fed. Rep. of Germany EI8GS · Ireland F1PSX · France F4IIX · France F4MPC · France KC1UVP · United States LB4PI · Norway

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 SQ4KDM

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: KO14 · 18 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 514 km (approx.)
Last such locator decoded: 2026-08-23 18:28 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	SQ4KDM S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-02 04:34	80m	+1 / -	GM6URC	-21 / -	2	✓ Closing observed
09-02 04:32	80m	+5 / -4	DL9KM	-4 / -12	7	✓ Full exchange observed
09-02 04:31	80m	+3 / -8	UX1UA	+10 / +2	4	✓ Full exchange observed
09-02 04:25	80m	-2 / -11	DL3LBP	-2 / -1	5	✓ Full exchange observed
09-02 04:24	80m	-3 / +8	SP9YGD	+7 / +1	5	✓ Full exchange observed
09-02 04:18	80m	-2 / -	TF4M	- / -10	2	Partial capture
08-23 18:28	40m	-3 / -	EI8GS	-8 / -5	5	✓ Full exchange observed
08-23 18:22	40m	0 / -	F4MPC	- / -20	2	✓ Closing fragment
08-23 18:18	40m	-2 / +4	LB5WB	-2 / -10	4	✓ Full exchange observed
08-23 05:19	40m	- / -11	F1PBZ	-8 / -	2	Partial capture
08-22 06:07	40m	-12 / -	LB4PI	- / -13	2	✓ Closing fragment
08-22 05:53	20m	- / -12	3A2MW	-4 / -	2	✓ Closing fragment
08-16 11:20	10m	- / -	DN9SGE	-6 / -	5	Partial capture
08-16 06:09	40m	-20 / -	TI4LAS	- / -20	2	Partial capture
08-16 05:27	40m	-24 / +10	EU6KA	-13 / -7	5	✓ Full exchange observed
08-15 21:37	40m	-17 / -	VJ6X	- / -19	4	✓ Closing fragment
08-14 20:52	40m	- / -	PC2J	-13 / -	5	Partial capture
08-08 06:30	40m	-16 / -	DG1RMY	- / -12	2	✓ Closing fragment
08-08 06:28	40m	-8 / -	SP1I	-2 / -4	6	✓ Full exchange observed
08-08 06:27	40m	-8 / 0	UX7QV	-16 / -2	5	✓ Full exchange observed
08-08 06:23	40m	-14 / -7	SP1ZMO	-24 / -2	3	✓ Full exchange observed
08-08 06:21	40m	-6 / -	SH5RJX	- / -1	2	✓ Closing fragment
08-08 06:17	40m	-13 / -	OH3CD	- / +3	2	✓ Closing fragment
08-08 06:10	40m	-14 / -	T48FCR	- / -12	2	Partial capture
08-08 06:08	40m	-14 / -	OA4ENG	- / -16	3	Partial capture
08-08 06:00	40m	-14 / -	PV8AJ	- / -15	2	✓ Closing fragment
08-08 05:56	40m	-14 / -	T48FCR	- / -16	5	Partial capture
08-08 05:52	40m	-2 / -	MI0NWA	- / -9	2	✓ Closing fragment
08-08 05:50	40m	- / -	SP9MRP	0 / -	4	Partial capture
08-08 05:44	40m	-9 / -	F4IIX	- / -8	3	✓ Closing fragment
08-08 05:41	40m	-8 / -4	SP3IPA	-6 / -4	8	✓ Full exchange observed
08-08 05:40	40m	-8 / -	KC1UVP	- / -15	2	✓ Closing fragment
08-08 05:39	40m	-10 / -	SQ4PKO	- / +1	2	✓ Closing fragment
08-02 07:12	40m	-18 / -	F1PSX	- / -14	2	✓ Closing fragment
08-02 07:07	40m	-14 / -	OO0O	- / -3	2	✓ Closing fragment
08-02 07:06	40m	-19 / +4	LY1SR	-15 / -	3	✓ Closing observed
07-27 09:20	10m	- / -3	TA3TCW	-24 / -	2	✓ Closing fragment
07-16 05:38	40m	-23 / -	DM1RG	- / -12	2	✓ Closing fragment
07-06 04:08	40m	- / +10	DL8TV	-3 / -	3	✓ Closing fragment
07-06 03:59	40m	- / -11	RN6MA	-20 / -	3	✓ Closing fragment
07-05 21:19	40m	- / 0	PD2RAL	-18 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
043130  -2 1601  UX1UA SQ4KDM +02
043145 +11 2601  SQ4KDM UX1UA R-08
043200  +8 2601  UX1UA SQ4KDM RR73
043215 +10 2601  SQ4KDM UX1UA 73
043215  -8 1215  SQ4KDM DL9KM JN68 (x2)
043300  +7 1215  DL9KM SQ4KDM -12
043315  -4 1215  SQ4KDM DL9KM R-04
043330  +4 1215  DL9KM SQ4KDM -12 (x2)
043415  +1 1215  SQ4KDM DL9KM 73
043445 -21 1548  SQ4KDM GM6URC RR73
043500  +1 1548  GM6URC SQ4KDM 73
043830  +5 1930  EC3A SQ4KDM -16
044015  +5 1520  K4JJQ SQ4KDM -18

40m

UTC    dB Audio  Message
181415  -1 1958  CQ SQ4KDM KO14
181715  +7  596  SQ3KO SQ4KDM RR73
181815  +1 1596  LB5WB SQ4KDM -10
181830  -1  596  SQ4KDM LB5WB R+04
181845  -5 1596  LB5WB SQ4KDM RR73
181900  -3  597  SQ4KDM LB5WB 73
182015  -1 1957  CQ SQ4KDM KO14 (x2)
182215  +1 1743  F4MPC SQ4KDM -20 (x2)
182800  -3 1491  EI8GS SQ4KDM KO14 (x2)
182845  -8 1491  SQ4KDM EI8GS R+13
182900  -3 1991  EI8GS SQ4KDM RR73
182915  -9 1491  SQ4KDM EI8GS 73

20m

UTC    dB Audio  Message
055300  -6  710  SQ4KDM 3A2MW R-12 (x2)

10m

UTC    dB Audio  Message
092045 -24 1584  SQ4KDM TA3TCW R-03 (x2)
112000  -4 1643  SQ4KDM DN9SGE JO42 (x5)

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.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee