9A3TF — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Croatia Most frequent locator attributed to this token: JN85

Receiver-side FT8 activity involving 9A3TF, decoded by SO8OO in southeastern Poland. 168 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-07-13.

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 168 FT8 messages attributed to 9A3TF as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (45%), followed by 80 m (26%) and 40 m (18%). Most decodes (64%) fell within the six-hour window 16:00-22:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

168

Messages attributed

UTC dates decoded

Active 15-min windows

-9 dB

Estimated median S/N

Bands

80m · 44 40m · 30 20m · 75 10m · 19

First attributed message: 2026-06-08
Last attributed message: 2026-07-13 13:09 UTC

Observed FT8 message patterns

Attributed sample: 168 messages
Active dates: 6 UTC dates
Estimated median S/N: -9 dB
Estimated 10th-90th percentile: -19 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 31, moderate (-15 to -9 dB) 56, strong (≥ -8 dB) 81.

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 9A3TF in decoded directed-looking exchanges:

DH1GKS · Fed. Rep. of Germany DN9ISK · Fed. Rep. of Germany DN9OPA · Fed. Rep. of Germany EA5JKM · Spain EB3FRN · Spain F4FSY · France F5LHI · France HB9DET · Switzerland LU7LRP · Argentina LZ4VR · Bulgaria PF7DKW · Netherlands RX6LQH · 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 9A3TF

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: JN85 · 103 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 610 km (approx.)
Last such locator decoded: 2026-07-13 13:09 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	9A3TF S/N	Counterpart	Counterpart S/N	Msgs	Capture
07-13 14:18	20m	- / -21	PA2AMJ	-18 / -	2	✓ Closing fragment
07-13 13:07	20m	-11 / -	9M8DEN	- / -	3	Partial capture
07-13 12:03	20m	- / -10	F5IXN	-7 / -	2	✓ Closing fragment
07-13 11:49	20m	-18 / -	RI0SP	- / -	5	Partial capture
07-13 10:48	20m	-19 / -	RI0SP	- / -	6	Partial capture
07-13 10:35	20m	-16 / -	RI0SP	- / -	2	Partial capture
07-13 10:19	10m	- / -2	F1PBZ	+2 / -	2	Partial capture
07-13 09:29	10m	- / -8	SV2CLJ	-7 / -	2	✓ Closing fragment
07-13 09:27	10m	- / -	SV7BAY	+1 / -	3	✓ Closing fragment
07-13 09:25	10m	- / -1	DN9OPA	-9 / -	2	✓ Closing fragment
07-13 09:21	10m	- / -1	LZ4VR	-10 / -	4	✓ Closing fragment
07-13 09:17	10m	- / -11	F4FSY	-9 / -	2	✓ Closing fragment
07-13 02:55	20m	- / -19	R3KCW	0 / -	4	✓ Closing fragment
07-12 10:40	10m	- / +1	F1PBZ	+1 / -	4	Partial capture
07-12 10:35	20m	- / -	PD2WL	-18 / -	6	Partial capture
07-12 10:29	20m	- / -	PD3LKN	-10 / -	2	Partial capture
07-12 10:25	20m	- / -3	PA8DC	-11 / -	3	✓ Closing fragment
07-12 10:12	20m	-18 / -	<...>	- / -	3	Partial capture
07-12 08:11	20m	- / -16	UR5FBD	-16 / -	3	Partial capture
07-12 05:23	20m	- / -	R6DVV	-20 / -	3	Partial capture
07-11 19:00	20m	-8 / -	HA3LI	- / -	2	Partial capture
07-11 18:08	10m	-8 / -	LU7LRP	- / -12	2	✓ Closing fragment
07-11 18:07	10m	- / -	DN9LL	-10 / -	3	Partial capture
07-11 18:07	10m	-7 / -	EA5JKM	- / -17	2	✓ Closing fragment
07-11 18:07	10m	- / -	DN9BT	-10 / -	2	Partial capture
07-11 18:06	10m	-8 / -17	PF7DKW	-16 / -5	4	✓ Full exchange observed
07-11 17:59	10m	-12 / -	SM5WXF	- / -11	2	Partial capture
07-11 17:53	10m	- / +4	DN9ISK	-16 / -	3	✓ Closing fragment
07-11 17:46	10m	- / -	DH1GKS	-14 / -	2	✓ Closing fragment
07-11 17:24	20m	-18 / -	YO4GIY	-20 / -12	2	✓ Closing observed
07-11 17:19	20m	-10 / -	A65JR	- / -14	4	✓ Closing fragment
07-11 17:16	20m	-5 / -	TA1EVR	- / -18	3	✓ Closing fragment
07-11 17:15	20m	+2 / -	XU7O	- / -	2	Partial capture
07-11 17:12	20m	-22 / -	EW1MN	- / -7	2	✓ Closing fragment
07-11 17:08	20m	-4 / -	EA2FLK	- / -8	2	✓ Closing fragment
07-11 17:07	20m	-3 / -9	PH1MRF	-9 / -11	4	Partial capture
07-11 13:16	20m	- / -	IK2ZJR	-3 / -	11	Partial capture
07-11 12:54	20m	-2 / -	T22TT	- / -21	5	Partial capture
07-11 12:53	20m	-12 / -	RI0SP	- / -	2	Partial capture
07-11 12:46	20m	-14 / -	RI0SP	- / -	2	Partial capture
07-11 06:04	20m	-1 / -	RI0SP	- / -16	6	✓ Closing fragment
07-11 05:51	20m	-15 / -	RI0SP	- / -	6	Partial capture
07-10 07:10	20m	- / -	PD3LKN	-13 / -	4	Partial capture
07-10 06:58	20m	- / -	PA1GLD	-1 / -	2	✓ Closing fragment
07-09 20:24	20m	- / -13	F6BTP	-11 / -	2	Partial capture
07-09 20:18	20m	- / -2	G4CFS	-6 / -	3	✓ Closing fragment
07-09 20:04	20m	- / -	EI2KP	-13 / -	2	✓ Closing fragment
07-09 16:44	20m	- / -12	R4FDW	-18 / -	9	Partial capture
07-09 15:58	20m	- / -8	GJ0KYZ	-10 / -	2	✓ Closing fragment
07-09 15:44	20m	- / -	EA3GXK	-12 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
105215 -16 1841  RI0SP 9A3TF JN85 (x6)
120300  -7 2838  9A3TF F5IXN R-10 (x2)
130715 -12  605  9M8DEN 9A3TF JN85 (x3)
141800  -6  965  9A3TF PD0IFI JO32
141830 -19 2090  9A3TF PA2AMJ R-21 (x2)
142200 -10  656  9A3TF 4X5MZ R-09

10m

UTC    dB Audio  Message
092745  -1  908  9A3TF SV7BAY +11 (x3)
092915  -7  595  9A3TF SV2CLJ -08 (x2)
093715 -24 1725  9A3TF DG6TOM JN58
094945 -20 1466  9A3TF HB9DET RR73
100315  -8  937  9A3TF F5LHI JN33 (x2)
101830 -20 1339  9A3TF R6DVV KN95
101900  +1 2742  9A3TF F1PBZ -02 (x2)
120830 -19 2037  9A3TF SV9/S50B +00
121230  +2 2295  9A3TF <...> +05
121900 -24 1878  9A3TF RX6LQH RR73

40m

UTC    dB Audio  Message
150145 -22 2084  CQ 9A3TF JN85                         a1
153230  -1 2733  9A3TF IQ4JO JN63
155430  -5  489  9A3TF SP9AU JO90 (x3)
160430  -8 1031  9A3TF UT1US KN59 (x2)
162245  -4  954  9A3TF SP9RIO -10
162315  +0  955  9A3TF RW3QU RR73
171715 -18 1414  9A3TF HG0MV -16 (x2)
172215 -12 1377  9A3TF R3IX KO76 (x4)

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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