SQ4AFJ — 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: KO04

Receiver-side FT8 activity involving SQ4AFJ, decoded by SO8OO in southeastern Poland. 32 FT8 messages attributed to this token as transmitter, on 60m, 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-07-02 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 32 FT8 messages attributed to SQ4AFJ as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (56%), followed by 40 m (44%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -16 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-16 dB

Estimated median S/N

Bands

60m · 18 40m · 14

First attributed message: 2026-07-02
Last attributed message: 2026-11-05 21:17 UTC

Observed FT8 message patterns

Attributed sample: 32 messages
Active dates: 3 UTC dates
Estimated median S/N: -16 dB
Estimated 10th-90th percentile: -19 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 16, moderate (-15 to -9 dB) 9, strong (≥ -8 dB) 7.

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 SQ4AFJ in decoded directed-looking exchanges:

HB9EFK · Switzerland HB9XBY · Switzerland DK3JW · Fed. Rep. of Germany E74K · Bosnia-Herzegovina F5RMK · France PA4PA · Netherlands SN5N · Poland

Most frequent locator attributed to SQ4AFJ

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: KO04 · 20 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 510 km (approx.)
Last such locator decoded: 2026-11-05 21:17 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	SQ4AFJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-05 21:13	60m	-13 / -	EA1MX	- / -	4	Partial capture
11-05 21:00	60m	-16 / -12	F5RMK	-14 / -11	5	✓ Full exchange observed
11-05 20:57	60m	-18 / -	9A4AA	- / -	4	Partial capture
11-05 20:55	60m	-16 / -	TA7MMI	- / -	2	Partial capture
11-05 20:54	60m	-16 / -	DK3JW	- / -3	2	✓ Closing fragment
11-05 20:53	60m	-18 / -14	SN5N	+4 / -	3	✓ Closing observed
11-05 20:48	40m	-2 / -	VJ6X	- / -	2	Partial capture
11-05 20:44	40m	-1 / -	HB9XBY	- / -18	5	✓ Closing fragment
10-24 21:42	40m	- / -9	HB9EFK	-12 / -	3	✓ Closing fragment
10-24 21:23	40m	- / -15	TA4SSK	-14 / -	2	Partial capture
10-22 20:12	60m	- / -9	PA4PA	+7 / -	3	✓ Closing fragment
08-24 19:48	20m	- / -	9A4ZM	+4 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
205700 -18 1383  9A4AA SQ4AFJ KO04 (x4)
210030 -18 2285  F5RMK SQ4AFJ KO04
210115 -14 2286  SQ4AFJ F5RMK -12
210130 -14 2285  F5RMK SQ4AFJ R-11
210145 -13 2286  SQ4AFJ F5RMK RR73
210200 -15 2286  F5RMK SQ4AFJ 73
210830 -21 1383  9A4AA SQ4AFJ KO04
211330 -13 2550  EA1MX SQ4AFJ KO04 (x4)
211745 -12  527  G4KYA SQ4AFJ KO04

40m

UTC    dB Audio  Message
212315 -13 1076  SQ4AFJ TA4SSK -15 (x2)
213230 -12 1545  SQ4AFJ EG46PPA -17
214245 -11 1745  SQ4AFJ HB9EFK -09 (x3)
204430  -1  652  HB9XBY SQ4AFJ KO04 (x5)
204800  -2 2441  VJ6X SQ4AFJ KO04 (x2)

20m

UTC    dB Audio  Message
194845  +8  358  SQ4AFJ 9A4ZM JN86 (x2)

CW

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

Explore CW reception at SO8OO

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