TF3VS — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Iceland Most frequent locator attributed to this token: HP94

Receiver-side FT8 activity involving TF3VS, decoded by SO8OO in southeastern Poland. 3,807 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 45 UTC dates in the available aggregate history. Observed between 2026-06-06 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 3,807 FT8 messages attributed to TF3VS as the transmitting token by decoded message structure across 45 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (77%), followed by 40 m (12%) and 20 m (11%). Most decodes (79%) fell within the six-hour window 21:00-03:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (63%); the estimated median was -6 dB.

Overview

3,807

Messages attributed

UTC dates decoded

458

Active 15-min windows

-6 dB

Estimated median S/N

Bands

80m · 2,915 40m · 441 20m · 436 10m · 15

First attributed message: 2026-06-06
Last attributed message: 2026-09-20 05:15 UTC

Observed FT8 message patterns

Attributed sample: 3,807 messages
Active dates: 45 UTC dates
Estimated median S/N: -6 dB
Estimated 10th-90th percentile: -17 to +3.2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 521, moderate (-15 to -9 dB) 903, strong (≥ -8 dB) 2,383.

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 TF3VS in decoded directed-looking exchanges:

EJ8JCB · Ireland ×2 HI3A · Dominican Republic ×2 PY5BH · Brazil ×2 R3ICU · European Russia ×2 TT1GD · Chad ×2 EA8BS · Canary Islands ×2 N1WI · United States ×2 WP4RBS · Puerto Rico ×2 CT2HEX · Portugal ×2 CT7AUT · Portugal ×2 DA6CGN · Fed. Rep. of Germany ×2 EA3JW · Spain ×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 TF3VS

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: HP94 · 1,955 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,958 km (approx.)
Last such locator decoded: 2026-09-20 05:15 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	TF3VS S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 06:07	80m	- / -3	LA1AAA	-2 / -	2	✓ Closing fragment
09-20 05:25	80m	- / -	S57AT	+5 / -	3	Partial capture
09-20 05:06	80m	-24 / -	SA4AGM	-17 / -20	3	✓ Closing observed
09-20 05:04	80m	-22 / -1	DH9DR	+2 / -	2	✓ Closing observed
09-20 05:00	80m	- / -	HB9DBM	+2 / -	5	Partial capture
09-20 04:58	80m	-19 / -7	IZ2QPP	-14 / -1	5	✓ Full exchange observed
09-20 04:55	80m	-22 / -3	DO2NM	+3 / -	3	✓ Closing observed
09-20 04:54	80m	- / -	IW3QTG	-2 / -	4	Partial capture
09-20 04:49	80m	- / -18	SV2JAO	-2 / -	10	Partial capture
09-20 04:48	80m	- / -	SP6CIK	+15 / -	4	Partial capture
09-20 04:46	80m	-9 / -	DM1YS	- / -7	3	✓ Closing fragment
09-20 04:42	80m	-12 / -	F4HJG	- / -15	3	✓ Closing fragment
09-20 04:39	80m	- / -7	DF8IJ	-2 / -	2	✓ Closing fragment
09-20 04:29	80m	-6 / -	DO7KGB	- / -11	3	✓ Closing fragment
09-20 04:24	80m	-9 / -	DO1NAE	-10 / -9	4	✓ Closing observed
09-20 04:17	80m	-8 / -18	UR5ZGY	+5 / -17	4	✓ Full exchange observed
09-20 04:15	80m	-2 / -25	SP9TDA	+12 / -9	5	✓ Full exchange observed
09-20 04:13	80m	-3 / 0	SQ4FDK	+16 / 0	5	✓ Full exchange observed
09-20 04:12	80m	- / -	SQ5HG	+11 / -	12	Partial capture
09-20 04:10	80m	-1 / -	F4LIP	- / -12	3	✓ Closing fragment
09-20 04:06	80m	-2 / -15	E75FM	+8 / -6	4	✓ Full exchange observed
09-20 04:05	80m	- / -	HA5CPN	+11 / -	2	Partial capture
09-20 04:05	80m	- / -	SP2EUI	-1 / -	2	Partial capture
09-20 04:04	80m	-1 / -	WB2AA	- / -14	3	✓ Closing fragment
09-20 04:02	80m	+2 / -19	UA3YFL	-2 / -12	4	✓ Full exchange observed
09-20 03:56	80m	-2 / -	LY4PR	-14 / -17	4	✓ Closing observed
09-20 03:56	80m	- / -	SV2BWY	-5 / -	3	Partial capture
09-20 03:55	80m	- / -	EU7A	+9 / -	5	Partial capture
09-20 03:54	80m	0 / -	SO100PKP	- / -5	2	Partial capture
09-20 03:49	80m	-2 / 0	F4CSG	-11 / -	3	Partial capture
09-20 03:35	80m	- / -6	UA3IDQ	0 / -	4	Partial capture
09-20 03:22	80m	- / -	E74A	+18 / -	4	Partial capture
09-20 03:21	80m	- / -1	DM1EE	-7 / -	3	Partial capture
09-20 03:14	80m	-15 / +1	DO2JUF	+9 / -2	5	✓ Full exchange observed
09-20 03:06	80m	- / -	UA3AGW	+9 / -	6	Partial capture
09-20 03:03	80m	-10 / -2	IU5AWQ	-4 / -11	18	✓ Full exchange observed
09-20 02:56	80m	- / -	OM7TJ	+11 / -	21	Partial capture
09-20 02:56	80m	-10 / -14	YT4ET	+4 / -5	5	✓ Full exchange observed
09-20 02:41	80m	- / -	RN6XD	+5 / -	2	Partial capture
09-20 02:36	80m	- / -	R4KB	-16 / -	2	Partial capture
09-20 02:34	80m	-4 / -	KP4U	- / -17	3	✓ Closing fragment
09-20 02:31	80m	+2 / -4	I3MDU	-6 / -8	5	✓ Full exchange observed
09-20 02:31	80m	- / -	UA7N	+14 / -	2	Partial capture
09-20 02:30	80m	-4 / -9	RQ3H	+2 / -13	4	✓ Full exchange observed
09-20 02:29	80m	- / -	RN6XD	+13 / -	4	Partial capture
09-20 02:28	80m	- / +2	DL0RDG	+4 / -	14	Partial capture
09-20 02:27	80m	-6 / -	RZ3BP	-4 / -15	4	✓ Closing observed
09-20 02:27	80m	- / -	R5BS	+6 / -	6	Partial capture
09-20 02:26	80m	- / -	R4KB	0 / -	6	Partial capture
09-20 02:21	80m	- / -	RN6XD	+6 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
050130  +4 2052  TF3VS HB9DBM JN37 (x2)
050415  +2 1193  TF3VS DH9DR -01
050500 -22 2052  DH9DR TF3VS 73
050630 -24 2051  SA4AGM TF3VS HP94 (x2)
050715 -17 1017  TF3VS SA4AGM RR73
051345 -22 1703  TF3VS M7NQB -21
051500 -24 2051  DO8JB TF3VS HP94
052515  +3 1503  TF3VS S57AT JN76 (x3)
053030 -18 1863  TF3VS M0UTD IO83
060730  -4 2847  TF3VS LA1AAA -03 (x2)

40m

UTC    dB Audio  Message
035545 -22 1709  TF3VS HK3YL -08 (x2)
040430  +1  938  TF3VS UR3AHB -16 (x2)
040530  -8 1335  TF3VS IT9IJF -21 (x5)
043415 -19 2105  TF3VS RQ3M KO97
044300  -3 1806  TF3VS R6KY -19 (x3)
044600 -14  642  WV5A TF3VS HP94
044700 -12  642  KB6SSN TF3VS HP94

20m

UTC    dB Audio  Message
203915  +2 1241  TF3VS YO4FZV KN44 (x8)
205430  -7  878  TF3VS K1VMT -02 (x2)
205945 -18 2083  TT1GD TF3VS HP94 (x3)
210130  +0 2326  TF3VS YO4FZV KN44 (x2)

10m

UTC    dB Audio  Message
121930 -10 2106  TF3VS PA3GMD JO21 (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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