YT4ET — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Serbia Most frequent locator attributed to this token: KN04

Receiver-side FT8 activity involving YT4ET, decoded by SO8OO in southeastern Poland. 314 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 10m, across 31 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-21.

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 314 FT8 messages attributed to YT4ET as the transmitting token by decoded message structure across 31 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (56%), followed by 80 m (42%) and 160 m (1%). Most decodes (86%) fell within the six-hour window 00:00-06:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (64%); the estimated median was -4 dB.

Overview

314

Messages attributed

UTC dates decoded

Active 15-min windows

-4 dB

Estimated median S/N

Bands

160m · 4 80m · 133 40m · 175 10m · 2

First attributed message: 2026-06-07
Last attributed message: 2026-09-21 00:45 UTC

Observed FT8 message patterns

Attributed sample: 314 messages
Active dates: 31 UTC dates
Estimated median S/N: -4 dB
Estimated 10th-90th percentile: -18 to +8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 54, moderate (-15 to -9 dB) 58, strong (≥ -8 dB) 202.

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 YT4ET in decoded directed-looking exchanges:

DL3NGN · Fed. Rep. of Germany ×2 F1IQH · France ×2 UA4FKT · European Russia ×2 IU5SCG · Italy ×2 DK3HV · Fed. Rep. of Germany DL6KA · Fed. Rep. of Germany EB3JT · Spain F4BPO · France F4LNM · France P5TIH · DPR of Korea UT7UJ · Ukraine DC8OAL · Fed. Rep. of Germany

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 YT4ET

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: KN04 · 119 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 608 km (approx.)
Last such locator decoded: 2026-09-21 00:42 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	YT4ET S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-21 00:46	80m	- / -	UN7EAX	-11 / -	2	Partial capture
09-21 00:44	80m	+1 / -11	GM6URC	-10 / -13	5	✓ Full exchange observed
09-21 00:40	80m	+6 / -11	PC2J	+4 / -11	10	✓ Full exchange observed
09-21 00:38	80m	+8 / -15	DO5PY	-6 / -9	5	✓ Full exchange observed
09-21 00:36	80m	+6 / -14	UN7BDZ	-8 / -12	4	✓ Full exchange observed
09-21 00:32	80m	+4 / -6	EW8CW	+9 / -	5	✓ Closing observed
09-21 00:32	80m	+8 / -6	F4VTR	-15 / -12	6	✓ Full exchange observed
09-21 00:29	80m	+4 / -11	RN6HK	+13 / +6	5	✓ Full exchange observed
09-21 00:28	80m	+4 / -11	EA8AR	-10 / -	3	✓ Closing observed
09-21 00:27	80m	+3 / -2	IQ4JO	+12 / +6	6	✓ Full exchange observed
09-21 00:25	80m	+4 / -	EA5HM	-9 / -5	4	✓ Closing observed
09-20 03:22	80m	+3 / -	EA8BS	- / -9	7	Partial capture
09-20 03:19	80m	+9 / -4	IK6GTF	-2 / -7	8	Partial capture
09-20 03:18	80m	+8 / -10	YO8XFU	+5 / -3	6	✓ Full exchange observed
09-20 03:14	80m	+8 / -2	PC2J	-9 / -19	9	Partial capture
09-20 03:11	80m	+12 / -7	Z35T	-1 / -	4	✓ Closing observed
09-20 03:09	80m	+9 / +4	UR5SG	+18 / +9	5	✓ Full exchange observed
09-20 03:08	80m	- / -9	UC6D	+15 / -	2	✓ Closing fragment
09-20 03:04	80m	+8 / -6	R5DT	+4 / -1	3	✓ Full exchange observed
09-20 03:02	80m	+1 / +3	9A60CBM	+10 / +1	2	Partial capture
09-20 03:01	80m	0 / -	HI8R	- / -16	2	Partial capture
09-20 02:57	80m	- / -	PC2J	-7 / -	4	Partial capture
09-20 02:57	80m	-12 / -7	RA6OY	+1 / +3	9	✓ Full exchange observed
09-20 02:57	80m	+6 / +3	YO6LM	+12 / +7	6	✓ Full exchange observed
09-20 02:56	80m	+4 / -5	TF3VS	-10 / -14	5	✓ Full exchange observed
09-20 02:45	80m	- / -5	UC6D	+10 / -	3	Partial capture
09-20 02:42	80m	+8 / -15	OZ1HGH	-4 / -15	13	✓ Full exchange observed
09-20 02:42	80m	0 / -14	R4FDD	-6 / -12	4	✓ Full exchange observed
09-20 02:39	80m	- / -	DL0RDG	+5 / -	4	Partial capture
09-20 02:38	80m	+12 / -	IU5SCG	-10 / -16	5	✓ Closing observed
09-20 02:37	80m	+6 / -	DO8JB	- / -15	2	✓ Closing fragment
09-20 02:33	80m	- / -	F1PWF	+2 / -	3	Partial capture
09-20 02:33	80m	- / -	IU5SCG	-9 / -	4	Partial capture
09-20 02:32	80m	+12 / -7	EA2DYB	0 / -10	4	✓ Full exchange observed
09-20 02:32	80m	+8 / +3	DL1VVQ	+7 / -10	9	✓ Full exchange observed
09-20 02:32	80m	- / -	ON4MAP	-10 / -	5	Partial capture
09-20 02:32	80m	+7 / -8	RX3ASQ	+3 / -	4	✓ Closing observed
09-17 01:16	80m	+4 / -	LA3RLA	-19 / -23	7	Partial capture
09-17 01:15	80m	-4 / -8	LZ5WW	-8 / -5	6	✓ Full exchange observed
09-17 01:14	80m	-5 / -8	HA7TM	+14 / -	4	✓ Closing observed
09-17 00:59	80m	-7 / -	RI1FJZ	- / -	2	Partial capture
09-17 00:38	40m	- / +9	UA4FKT	+17 / -	3	✓ Closing fragment
09-15 05:42	40m	- / -	DL5DQZ	+14 / -	12	Partial capture
09-13 17:13	40m	-5 / -10	OH2MA	+3 / -	4	✓ Closing observed
09-13 03:49	160m	-19 / -	HB9CXZ	- / -7	3	Partial capture
09-13 03:41	80m	-5 / -4	ON1JP	-20 / -17	5	Partial capture
09-13 03:41	80m	0 / -	DL3NGN	- / -15	2	Partial capture
09-13 03:39	80m	0 / -7	HA9OA	+8 / -5	6	✓ Full exchange observed
09-13 03:39	80m	- / -	SP6FME	+12 / -	3	Partial capture
09-13 03:38	80m	+2 / -9	YL2EA	+5 / 0	5	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
004115 +10  955  PC2J YT4ET -11
004130  +1  955  YT4ET PC2J R-11
004200  +4  955  PC2J YT4ET 73
004230  +2  954  CQ YT4ET KN04
004315  +0  955  YT4ET PC2J JO22
004330  -1  955  PC2J YT4ET -09
004345  +4  955  YT4ET PC2J R-08 (x2)
004415  -3 1778  YT4ET GM6URC -11 (x2)
004500  +0 1777  GM6URC YT4ET R-13
004515 -13 1778  YT4ET GM6URC RR73
004530  +2 1778  GM6URC YT4ET 73
004615 -10 2584  YT4ET UN7EAX MO52 (x2)

40m

UTC    dB Audio  Message
054515 -14 2098  CQ YT4ET KN04
054530 +15 2699  YT4ET DL5DQZ JO61
054545 -14 2098  CQ YT4ET KN04
054600 +13 2699  YT4ET DL5DQZ JO61
054615 -15 2098  CQ YT4ET KN04
054630 +15 2699  YT4ET DL5DQZ JO61
054645  -8 2098  CQ YT4ET KN04
054700 +18 2699  YT4ET DL5DQZ JO61
054715  -3 2314  EA5PS YT4ET -09
054730 +16 2699  YT4ET DL5DQZ JO61 (x2)
003815 +20  636  YT4ET UA4FKT LO23 (x3)
044230  -5  679  YT4ET UB3BDJ/6 R-06

160m

UTC    dB Audio  Message
034730 -21 1427  CQ YT4ET KN04
034915 -20 2384  HB9CXZ YT4ET -07 (x3)

20m

UTC    dB Audio  Message
054830 -13  672  YT4ET TA3NK R-14
091330  -3  670  YT4ET EB3JT JN01 (x3)
091730 +10  668  YT4ET UT7UJ -21 (x3)
092000 -24 1660  YT4ET HB9HYO JN36
092000  -1  667  YT4ET DK3HV JO31
092030 -15 1661  YT4ET HB9HYO JN36
092030  -1  667  YT4ET DK3HV JO31
092100 -19 1660  YT4ET HB9HYO JN36
092100  -4  667  YT4ET DK3HV R-16 (x2)
092245 -21 1661  YT4ET HB9HYO JN36

10m

UTC    dB Audio  Message
075645 -24 1517  YT4ET DL3NGN R-01
075700 -20 1515  DL3NGN YT4ET RR73
075715 -21 1517  YT4ET DL3NGN 73
080200 -17 1524  DL3NGN YT4ET 73

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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