ES4TRI — 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: Estonia Most frequent locator attributed to this token: KO39

Receiver-side FT8 activity involving ES4TRI, decoded by SO8OO in southeastern Poland. 491 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, across 34 UTC dates in the available aggregate history. Observed between 2026-08-13 and 2026-10-23.

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 491 FT8 messages attributed to ES4TRI as the transmitting token by decoded message structure across 34 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (48%), followed by 80 m (40%) and 60 m (9%). Most decodes (70%) fell within the six-hour window 17:00-23:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.

Overview

491

Messages attributed

UTC dates decoded

102

Active 15-min windows

-12 dB

Estimated median S/N

Bands

160m · 14 80m · 198 60m · 44 40m · 234 20m · 1

First attributed message: 2026-08-13
Last attributed message: 2026-10-23 12:45 UTC

Observed FT8 message patterns

Attributed sample: 491 messages
Active dates: 34 UTC dates
Estimated median S/N: -12 dB
Estimated 10th-90th percentile: -20 to -4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 149, moderate (-15 to -9 dB) 207, strong (≥ -8 dB) 135.

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 ES4TRI in decoded directed-looking exchanges:

HA7TM · Hungary ×3 DK7ZT · Fed. Rep. of Germany ×3 LZ2VQ · Bulgaria ×3 CT7AUT · Portugal ×2 DL1UDO · Fed. Rep. of Germany ×2 DL7ACA · Fed. Rep. of Germany ×2 EC3A · Spain ×2 F1PBZ · France ×2 F5PBG · France ×2 ON7DE · Belgium ×2 OS4K · Belgium ×2 PE1NPS · Netherlands ×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 ES4TRI

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: KO39 · 185 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,114 km (approx.)
Last such locator decoded: 2026-10-23 12:45 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	ES4TRI S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-22 22:59	60m	- / -12	EA1IOK	-6 / -	3	✓ Closing fragment
10-22 22:58	60m	- / -7	LZ2VQ	+6 / -	3	✓ Closing fragment
10-22 22:57	60m	- / -18	PE1NPS	+9 / -	3	✓ Closing fragment
10-22 22:56	60m	- / -9	EA8AE	-12 / -	2	✓ Closing fragment
10-22 22:30	80m	-14 / -12	LX/DF2SD	+8 / -5	3	Partial capture
10-20 13:15	10m	- / -16	CT2GQA	-8 / -	7	✓ Closing fragment
10-20 01:03	40m	- / -	HB9ZHK	-14 / -	3	Partial capture
10-19 21:54	40m	- / -23	9A5ZD	-16 / -	2	✓ Closing fragment
10-19 21:44	40m	- / -13	ME7IEB	-10 / -	4	✓ Closing fragment
10-19 21:17	160m	- / -11	EW4M	+15 / -	2	Partial capture
10-19 21:03	40m	- / -18	F4BQS	-7 / -	9	✓ Closing fragment
10-19 19:23	40m	- / -15	SV8OVJ	+2 / -	3	✓ Closing fragment
10-19 00:02	40m	- / -19	SV3AUW	-13 / -	5	Partial capture
10-18 23:55	40m	- / -13	EA2TW	-13 / -	3	Partial capture
10-18 23:54	40m	- / -13	TA3NK	-17 / -	3	✓ Closing fragment
10-18 23:38	40m	- / -10	YO3GNF	-5 / -	3	✓ Closing fragment
10-18 21:54	80m	-11 / -12	UR4UT	+5 / -	4	✓ Closing observed
10-18 21:48	80m	- / -6	SP5GMM	+11 / -	4	✓ Closing fragment
10-18 21:45	80m	-8 / -22	DO8PAT	-2 / -	16	✓ Closing observed
10-18 21:43	80m	-17 / -10	SP4WJ	-18 / -16	5	✓ Full exchange observed
10-18 10:46	10m	- / -	EA7L	-9 / -	3	✓ Closing fragment
10-18 10:46	10m	- / -	CT7AUT	-9 / -	2	Partial capture
10-18 10:42	10m	- / -9	EA7L	-14 / -	3	Partial capture
10-15 16:07	40m	-4 / -15	UA4FEN	-10 / -13	3	Partial capture
10-15 15:34	40m	-12 / -3	RD3FY	0 / -	4	✓ Closing observed
10-15 15:30	40m	-12 / -16	I3LID	0 / -8	5	✓ Full exchange observed
10-15 15:29	40m	-7 / -9	F5MXH	-10 / -	4	✓ Closing observed
10-15 15:25	40m	-12 / -	RQ3D	-17 / -7	3	Partial capture
10-15 15:25	40m	-16 / -	RK4PR	-9 / +2	3	✓ Closing observed
10-15 15:25	40m	- / -5	UT3RO	-2 / -	4	✓ Closing fragment
10-14 21:13	80m	- / -23	9A6NTK	+10 / -	4	✓ Closing fragment
10-14 21:12	80m	- / -14	SP3HUU	+5 / -	3	✓ Closing fragment
10-13 20:01	40m	- / -2	DF3QL	-4 / -	2	Partial capture
10-12 20:53	40m	- / -14	GW3TYI	-10 / -	2	Partial capture
10-12 20:37	80m	-16 / -	RN2F	+1 / -	2	✓ Closing observed
10-12 20:36	80m	- / -	YU0U	-1 / -	2	Partial capture
10-12 17:32	40m	-12 / -	SO5WD	- / -6	2	✓ Closing fragment
10-07 22:13	40m	-24 / -14	EA8UP	-4 / -1	5	✓ Full exchange observed
10-07 21:54	40m	-19 / -12	EW8DU	-9 / -6	5	✓ Full exchange observed
10-07 21:21	40m	- / -13	G0KEE	-14 / -	2	Partial capture
10-07 21:14	40m	- / -10	M7SZB	-12 / -	2	Partial capture
10-07 21:13	40m	- / -18	EA8BIA	-17 / -	2	Partial capture
10-07 19:55	80m	- / -	OM1FED	+3 / -	4	Partial capture
10-07 19:53	80m	-11 / -8	DC0GL	+4 / 0	5	✓ Full exchange observed
10-07 18:54	40m	-2 / -	G7COU	- / -3	3	Partial capture
10-07 18:49	40m	-4 / -	SP3MJK	- / -15	2	Partial capture
10-07 18:47	40m	-10 / -8	PA3BMB	-9 / -	4	✓ Closing observed
10-07 18:43	40m	-2 / -	DL2AOM	- / -19	4	✓ Closing fragment
10-06 19:42	40m	-18 / -	OM3TWM	- / +9	2	✓ Closing fragment
10-06 19:36	80m	0 / -16	RC6OU	+4 / +3	4	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
210730  -3 1895  ES4TRI F4BQS R-18 (x2)
214400  -7  989  ES4TRI ME7IEB R-13 (x4)
214930  +1 2351  ES4TRI F4GIH JN08
215400 -14 1659  ES4TRI 9A5ZD R-23 (x2)
003015  -5  791  ES4TRI K4ZO 73
010345 -13 2120  ES4TRI HB9ZHK JN47 (x3)
133145 -14 1414  YB5WIR ES4TRI KO39
124545 -16 1370  BD3MSK ES4TRI KO39

60m

UTC    dB Audio  Message
192445  +1 2692  ES4TRI DK4RH JO31 (x2)
225030  +6 2653  ES4TRI LZ2VQ KN23
225030  -9 1171  ES4TRI DG5PW JO30
225600 -12 1309  ES4TRI EA8AE -09 (x2)
225700  +9 2528  ES4TRI PE1NPS JO22 (x3)
225800  +5 2653  ES4TRI LZ2VQ KN23 (x3)
225900  -9 1079  ES4TRI EA1IOK IN62 (x3)

80m

UTC    dB Audio  Message
215145  +5 1374  ES4TRI DO8PAT R-22 (x4)
215330  -8 2676  DO8PAT ES4TRI RR73
215345  +5 1375  ES4TRI DO8PAT R-22
215400  -7  885  DO8PAT ES4TRI RR73
215430 -18 1375  CQ ES4TRI KO39                        a1
215445  +1  884  ES4TRI UR4UT -12 (x3)
215600 -11  884  UR4UT ES4TRI 73
223030 -15 1264  <LX/DF2SD> ES4TRI KO39
223045  +8 2152  ES4TRI LX/DF2SD -12
223100 -12 1264  LX/DF2SD ES4TRI R-05

160m

UTC    dB Audio  Message
190015  +2 2460  ES4TRI SN6P JO80 (x2)
190115  -7 2219  ES4TRI YL2EA KO26
190115  +6 2460  ES4TRI SN6P JO80
190145  -8 2219  ES4TRI YL2EA R-08
190145  -3 2460  ES4TRI SN6P JO80
190200 -12 2219  YL2EA ES4TRI RR73
190215 -10 2219  ES4TRI YL2EA 73
190215  +5 2460  ES4TRI SN6P JO80 (x3)
211000 +25 2551  ES4TRI SP2YY 73
211730 +14 2605  ES4TRI EW4M KO23 (x2)
222700 -13 1262  YB5WIR ES4TRI KO39

10m

UTC    dB Audio  Message
104245 -15 2184  ES4TRI EA7L -09 (x2)
104615 -11 1531  ES4TRI CT7AUT IM67
104645  -7 1014  ES4TRI EA7L RR73
104645  -7 1531  ES4TRI CT7AUT IM67
104715 -10 1014  ES4TRI EA7L RR73 (x2)
130830 -23 1593  ES4TRI CR7BUW 73
131515  -2 1199  ES4TRI CT2GQA IM58 (x7)

20m

UTC    dB Audio  Message
191045  +4  903  ES4TRI EA1FRP IN81 (x2)
191115 -10  327  ES4TRI DL6RS JN48
191145  +1  903  ES4TRI EA1FRP R-08
191145  -4  327  ES4TRI DL6RS JN48
191215  +4  903  ES4TRI EA1FRP R-08
191215  -4  327  ES4TRI DL6RS JN48
191245  +6  903  ES4TRI EA1FRP R-08
191315  -1  377  ES4TRI OO0O JO11
191315  +6  903  ES4TRI EA1FRP R-08
191345  -8  378  ES4TRI OO0O JO11
191345  +1  903  ES4TRI EA1FRP R-08 (x2)
191445  -9  377  ES4TRI OO0O JO11 (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.

CW

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

Explore CW reception at SO8OO

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