SQ3TR — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JO82

Receiver-side FT8 activity involving SQ3TR, decoded by SO8OO in southeastern Poland. 2,514 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 38 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-20.

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 2,514 FT8 messages attributed to SQ3TR as the transmitting token by decoded message structure across 38 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (84%), followed by 20 m (8%) and 60 m (5%). Most decodes (79%) fell within the six-hour window 15:00-21:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (74%); the estimated median was -3 dB.

Overview

2,514

Messages attributed

UTC dates decoded

237

Active 15-min windows

-3 dB

Estimated median S/N

Bands

80m · 44 60m · 135 40m · 2,122 20m · 213

First attributed message: 2026-06-07
Last attributed message: 2026-09-20 20:08 UTC

Observed FT8 message patterns

Attributed sample: 2,514 messages
Active dates: 38 UTC dates
Estimated median S/N: -3 dB
Estimated 10th-90th percentile: -12.1 to +9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 107, moderate (-15 to -9 dB) 536, strong (≥ -8 dB) 1,871.

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 SQ3TR in decoded directed-looking exchanges:

IK4LZH · Italy ×6 PC2J · Netherlands ×4 F1IQH · France ×4 SP5ROM · Poland ×3 SQ8V · Poland ×3 SQ9SET · Poland ×3 E70SZ · Bosnia-Herzegovina ×2 4X1UF · Israel ×2 F1PBZ · France ×2 OK2VCR · Czech Republic ×2 TA2ED · Asiatic Turkey ×2 DB1AD · Fed. Rep. of Germany ×2

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 SQ3TR

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: JO82 · 1,397 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 439 km (approx.)
Last such locator decoded: 2026-09-20 20:07 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	SQ3TR S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 20:07	40m	-6 / -	5A1AL	-12 / -14	3	✓ Closing observed
09-20 19:24	40m	+9 / -	PD4RJ	- / -10	3	✓ Closing fragment
09-20 19:21	40m	+8 / -	BG0FQU	- / -	4	Partial capture
09-20 19:18	40m	+7 / -	PA/DL2TT	- / -11	2	Partial capture
09-20 19:09	40m	+11 / -	YO9BNP	-9 / -11	4	✓ Closing observed
09-20 19:05	40m	+8 / -15	JA4FKX	-8 / -10	5	✓ Full exchange observed
09-20 18:31	40m	+3 / -	2E0IJC	- / 0	10	Partial capture
09-20 18:26	40m	- / -	2E0IJC	-1 / -	3	Partial capture
09-20 18:10	40m	+3 / -2	R3RBB	-9 / -14	7	✓ Full exchange observed
09-20 18:05	40m	+2 / -3	UR4LG	-9 / -12	5	✓ Full exchange observed
09-20 18:03	40m	+4 / -5	HB9DWR	-12 / -16	4	✓ Full exchange observed
09-20 18:01	40m	+9 / -	SP9DPI	- / -21	2	✓ Closing fragment
09-20 17:55	40m	+12 / -	DL6ZOG	+1 / -4	4	✓ Closing observed
09-20 17:51	40m	+12 / -	DJ7XY	-16 / -8	4	✓ Closing observed
09-20 17:45	40m	+8 / -	OM2WW	- / -	2	Partial capture
09-20 17:43	40m	+9 / -	EA4DZR	- / -16	3	✓ Closing fragment
09-20 17:40	40m	+6 / -	EW8AAC	- / -	2	Partial capture
09-20 17:39	40m	+7 / -	DL/AD2LX	- / -13	3	Partial capture
09-20 17:37	40m	+3 / +5	GI4FHB	-8 / -10	5	✓ Full exchange observed
09-20 17:36	40m	+1 / -11	DL/AD2LX	-7 / -14	2	Partial capture
09-20 17:33	40m	+10 / -	F5PZT	- / -11	3	✓ Closing fragment
09-20 17:32	40m	+10 / -	F4EUJ	- / -15	2	Partial capture
09-20 17:29	40m	+12 / -	C31HS	- / -	2	Partial capture
09-20 17:25	40m	+9 / +6	RK3DJW	+7 / -5	5	✓ Full exchange observed
09-20 17:24	40m	+7 / -	G8FVE	- / -15	5	✓ Closing fragment
09-20 17:23	40m	+5 / -	DB1AAH	-6 / -11	5	✓ Full exchange observed
09-20 17:19	40m	+4 / -	DL6EL	-2 / -7	4	✓ Closing observed
09-20 17:15	40m	+6 / -	PA8S	- / -9	2	✓ Closing fragment
09-20 17:13	40m	+5 / -15	R1TAX	-6 / -4	3	✓ Full exchange observed
09-20 17:08	40m	+12 / -4	PE1MHY	-4 / -2	4	✓ Full exchange observed
09-20 17:04	40m	+7 / -	HF100PKP	- / -	2	Partial capture
09-20 17:03	40m	+4 / -	II9IAGM	- / -	2	Partial capture
09-20 17:02	40m	+11 / -	SP4WSL	- / -	2	Partial capture
09-20 16:59	40m	+10 / +5	9A5MP	-11 / -16	4	✓ Full exchange observed
09-20 16:57	40m	+7 / -	OE3OGC/P	- / -11	2	Partial capture
09-20 16:56	40m	+10 / -	IU4PPL	-6 / -9	4	✓ Full exchange observed
09-20 16:53	40m	+6 / -	RZ4FWA	- / -19	2	✓ Closing fragment
09-20 14:12	40m	+7 / -	PD4RJ	- / -9	2	Partial capture
09-20 14:11	40m	+10 / -	DL7DZ	- / -19	2	✓ Closing fragment
09-20 14:06	40m	+10 / -	F1FFR	- / -	2	Partial capture
09-20 14:00	40m	+7 / -	R2FCA	- / -	4	Partial capture
09-20 13:50	40m	+9 / -	SN40KZE	- / -	2	Partial capture
09-20 13:48	40m	+4 / -2	SP5MIG	-2 / 0	5	✓ Full exchange observed
09-20 13:46	40m	+6 / -	DC1TK	+6 / -1	5	✓ Full exchange observed
09-20 13:13	40m	+6 / 0	SQ8V	-20 / -5	6	✓ Full exchange observed
09-20 13:07	40m	+6 / -	DL1FAM	-8 / -1	7	✓ Full exchange observed
09-20 12:57	40m	+6 / -	R1AV	- / -6	2	✓ Closing fragment
09-20 12:54	40m	+7 / +6	SQ9BDB	+2 / -3	5	✓ Full exchange observed
09-20 12:42	40m	+9 / -	DK1TBL	- / -9	3	✓ Closing fragment
09-20 12:31	40m	+5 / -	PD4RJ	- / -6	12	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
191915  +5  243  PA/DL2TT SQ3TR R-11
192115  -5  243  CQ SQ3TR JO82
192145  +7  243  BG0FQU SQ3TR JO82 (x4)
192415  +7  243  PD4RJ SQ3TR JO82 (x3)
192645  +5  243  CQ SQ3TR JO82 (x2)
200730  +4  243  5A1AL SQ3TR JO82 (x2)
200815 -12  987  SQ3TR 5A1AL RR73
203115  -5  286  SQ3TR M0WOO IO94

60m

UTC    dB Audio  Message
193115 -14  870  SQ3TR DL2OAM 73
193130  -2  869  CQ SQ3TR JO82 (x2)
193215 -12  869  SQ3TR EB3JT JN01
193230  -9  869  EB3JT SQ3TR -13
193245  -9  869  SQ3TR EB3JT R-16
193300  -4  869  EB3JT SQ3TR RR73
193315  -9  869  SQ3TR EB3JT 73
193330  -2  869  CQ SQ3TR JO82 (x2)
193430 -11  869  YT5DEY SQ3TR JO82
193445  -8 1132  SQ3TR YT5DEY -21
193500  -4  869  YT5DEY SQ3TR R-18
193515  -9 1132  SQ3TR YT5DEY RR73
193530  -4  869  YT5DEY SQ3TR R-18

80m

UTC    dB Audio  Message
181145  -8  651  R2EA/P SQ3TR JO82
181215  -8  651  <SN100PKP> SQ3TR JO82
181430 -18  601  SQ3TR PC2J JO22
181430  -8 2205  SQ3TR IQ4JO JN63
181500  -8  600  SQ3TR PC2J R-12
181500  +6 2205  SQ3TR IQ4JO JN63
181530 -17  601  SQ3TR PC2J 73
181530  -6 2205  SQ3TR IQ4JO JN63 (x3)
181715 -13  600  CQ SQ3TR JO82
181915 -10  601  LZ936BA SQ3TR JO82 (x2)
183800  +1 1103  SQ3TR DO1BOC -10 (x2)

20m

UTC    dB Audio  Message
204445  -2  269  CQ SQ3TR JO82 (x2)
210645  +7  519  SQ3TR DL3MN JN58 (x5)
211215 -17 2563  SQ3TR W2BCC FN21 (x8)

10m

UTC    dB Audio  Message
111445  -6 1299  SQ3TR DG2SAT 73
111515  -4  604  SQ3TR DJ3HW JO30 (x3)
111915 -10 2684  SQ3TR 9A3AUH -10 (x2)
112615 -15 1391  SQ3TR E70SZ JN84 (x3)
113115  -7 2383  SQ3TR E75W -08
113145 -23 1390  SQ3TR RN6MA -18
113145 -10 2383  SQ3TR E75W -08
113215 -20 1390  SQ3TR RN6MA -18
113515 -20 1066  SQ3TR DN9SHA JO31 (x2)

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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