SA3TVF — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Sweden Most frequent locator attributed to this token: JP63

Receiver-side FT8 activity involving SA3TVF, decoded by SO8OO in southeastern Poland. 68 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 9 UTC dates in the available aggregate history. Observed between 2026-07-14 and 2026-09-02.

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 68 FT8 messages attributed to SA3TVF as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (71%), followed by 40 m (29%). Most decodes (81%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

40m · 20 20m · 48

First attributed message: 2026-07-14
Last attributed message: 2026-09-02 20:26 UTC

Observed FT8 message patterns

Attributed sample: 68 messages
Active dates: 9 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -19 to -2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 20, moderate (-15 to -9 dB) 24, strong (≥ -8 dB) 24.

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 SA3TVF in decoded directed-looking exchanges:

9A6NTK · Croatia A41ZZ · Oman CT7AUT · Portugal EA1IWI · Spain EA8UP · Canary Islands G4DBW · England HS0ZOY · Thailand JH5AVM · Japan M0MLS · England PD0IFI · Netherlands PD1ADA · Netherlands R4FDW · European Russia

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 SA3TVF

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: JP63 · 33 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,597 km (approx.)
Last such locator decoded: 2026-09-02 20:23 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	SA3TVF S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-02 20:23	40m	-2 / -	SM3ULU	-7 / -12	3	Partial capture
09-02 20:23	40m	0 / -	YU5DR	- / -	2	Partial capture
09-02 20:21	40m	-3 / -7	4X1UF	-11 / -5	5	✓ Full exchange observed
09-02 20:12	40m	-9 / -18	CN8NS	-7 / -6	20	Partial capture
09-02 20:10	40m	-4 / +1	F4JRC	+7 / +8	5	✓ Full exchange observed
09-01 19:52	40m	-10 / -22	UB6OCP	-7 / -	2	Partial capture
09-01 19:45	40m	- / -7	IK4RVY	0 / -	7	✓ Closing fragment
08-24 21:02	20m	- / -1	EA8UP	+12 / -	2	✓ Closing fragment
08-24 20:59	20m	- / -1	CT7AUT	-10 / -	2	✓ Closing fragment
08-24 20:47	20m	- / -	DL1R	0 / -	4	Partial capture
08-20 14:01	20m	- / 0	PD0IFI	+4 / -	6	✓ Closing fragment
08-20 14:01	20m	- / -	RY7G	-2 / -	2	Partial capture
07-29 15:46	20m	-18 / -	DS5USH	- / -	7	Partial capture
07-29 15:41	20m	- / -7	G4DBW	-6 / -	4	✓ Closing fragment
07-29 15:33	20m	- / -24	PE9JAN	-16 / -	4	Partial capture
07-29 15:29	20m	-18 / -6	R4FDW	-16 / -5	6	✓ Full exchange observed
07-29 15:28	20m	-16 / -5	9A6NTK	-7 / -	4	✓ Closing observed
07-29 15:27	20m	-20 / -	A41ZZ	- / -9	2	✓ Closing fragment
07-29 15:22	20m	-12 / -	BV2NF	- / 0	2	Partial capture
07-28 15:12	40m	- / +9	SQ5OMY	-14 / -	2	Partial capture
07-26 20:27	20m	-15 / -	SQ7BKG	- / +2	2	✓ Closing fragment
07-26 20:24	20m	-16 / -	JH5AVM	- / -16	4	✓ Closing fragment
07-20 20:31	20m	-9 / -	PY1SX	- / -	2	Partial capture
07-20 20:30	20m	- / -	EA1FUB	-4 / -	4	Partial capture
07-20 20:27	20m	-2 / -	BA4QFQ	- / -	2	Partial capture
07-20 20:24	20m	-6 / -	HS0ZOY	- / -2	3	✓ Closing fragment
07-19 09:37	20m	-10 / -	EA1FUB	- / -5	4	Partial capture
07-19 09:32	20m	-8 / -	T22TT	- / -	4	Partial capture
07-16 10:20	20m	-10 / -	HI8J	- / -	2	Partial capture
07-14 13:39	20m	-10 / -	9J2FI	- / -	2	Partial capture
07-13 20:27	40m	- / -	9A4ZM	-8 / -	2	Partial capture
07-13 20:16	40m	- / -11	DG0OME	-7 / -	2	✓ Closing fragment
07-13 09:17	20m	- / -15	PD1ADA	-17 / -	2	✓ Closing fragment
07-11 20:11	20m	- / -11	TN8GD	-14 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
201930  -7 2235  SA3TVF CN8NS -18 (x3)
202130  -4  810  4X1UF SA3TVF JP63
202145 -11  228  SA3TVF 4X1UF -07
202200  -6  804  4X1UF SA3TVF R-05
202215 -11  228  SA3TVF 4X1UF RR73
202230  +0  807  4X1UF SA3TVF 73
202300  -2  569  YU5DR SA3TVF JP63
202315  -7 1834  SA3TVF SM3ULU JP81
202330  +3  568  YU5DR SA3TVF JP63
202345  -4  857  SA3TVF F5PBG IN78
202430  -2  569  SM3ULU SA3TVF -12 (x2)
202630  -3  567  F5PBG SA3TVF -11

20m

UTC    dB Audio  Message
140215  +4  615  SA3TVF PD0IFI R+00 (x3)
140345  +0  564  SA3TVF DK5OPA JO30
140415  +6  615  SA3TVF PD0IFI JO32
204500  +1  978  SA3TVF II7MGXX -16
204530  +3  978  SA3TVF RR73; OE5ROR <...> +00
204700  -2 2658  SA3TVF DL1R JN58 (x4)
205915 -11 1539  SA3TVF CT7AUT -01 (x2)
210215 +12 2215  SA3TVF EA8UP -01 (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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