9A3TR — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Croatia Most frequent locator attributed to this token: JN64

Receiver-side FT8 activity involving 9A3TR, decoded by SO8OO in southeastern Poland. 65 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 8 UTC dates in the available aggregate history. Observed between 2026-08-30 and 2026-09-18.

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 65 FT8 messages attributed to 9A3TR as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (77%), followed by 40 m (23%). Several six-hour UTC windows tied for the largest share (95%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (92%); the estimated median was +3 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

+3 dB

Estimated median S/N

Bands

80m · 50 40m · 15

First attributed message: 2026-08-30
Last attributed message: 2026-09-18 16:40 UTC

Observed FT8 message patterns

Attributed sample: 65 messages
Active dates: 8 UTC dates
Estimated median S/N: +3 dB
Estimated 10th-90th percentile: -7 to +13 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 3, moderate (-15 to -9 dB) 2, strong (≥ -8 dB) 60.

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 9A3TR in decoded directed-looking exchanges:

DO9MH · Fed. Rep. of Germany ×2 HG8LXL · Hungary M0BEW · England OZ9FF · Denmark PA2RO · Netherlands DO9PV · Fed. Rep. of Germany EA3DNC · Spain IQ4JO · Italy KH8WW · American Samoa RK6OQ · European Russia YO9HP · Romania

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 9A3TR

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: JN64 · 37 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 897 km (approx.)
Last such locator decoded: 2026-09-14 17:53 UTC

Other locator fields attributed to this token: JN86 (4).

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	9A3TR S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-18 16:38	80m	+15 / -	KH8WW	- / -23	5	✓ Closing fragment
09-14 17:50	40m	-4 / -5	M0BEW	+8 / +9	4	✓ Full exchange observed
09-14 17:48	40m	0 / -	UX7QV	- / +1	2	Partial capture
09-12 08:42	40m	-17 / -	HG8LXL	-5 / +2	6	✓ Full exchange observed
09-12 08:42	40m	- / -	IK2ZJR	-11 / -	3	Partial capture
09-12 08:42	40m	- / -14	PA2RO	-13 / -	4	✓ Closing fragment
09-12 08:41	40m	-17 / -15	OZ9FF	-6 / -18	4	✓ Full exchange observed
09-11 18:09	80m	0 / -	DO9MH	- / -20	3	✓ Closing fragment
09-11 18:06	80m	-1 / -	EA3DNC	- / -25	3	✓ Closing fragment
09-11 18:02	80m	+4 / -	IQ4JO	-4 / -	4	✓ Closing observed
09-11 18:01	80m	- / -	UY5BF	+18 / -	2	Partial capture
09-11 18:00	80m	+5 / -	DO9PV	-6 / 0	2	✓ Closing observed
09-11 17:58	80m	+3 / -10	YO9HP	+9 / +9	3	✓ Full exchange observed
09-11 17:51	80m	+9 / -	ZS6WAB	- / -	5	Partial capture
09-11 17:49	80m	+10 / -22	RK6OQ	+8 / -14	4	✓ Full exchange observed
09-11 17:42	80m	+2 / -4	DO2KMB	+3 / -9	4	Partial capture
09-03 17:57	80m	+6 / -	UA9LP	- / -	4	Partial capture
08-30 18:03	80m	+7 / -	<...>	- / -6	2	Partial capture
08-30 17:51	80m	-3 / -	Z62NS	- / -	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
180730  +4 2312  CQ 9A3TR JN64 (x2)
180815  -9 2312  9A3TR DH5BO JO43
180830  -6 2312  CQ 9A3TR JN64
180900  -1 2312  DO9MH 9A3TR -20 (x2)
181000  +0 2313  DG1ASD 9A3TR R-13
181030  +0 2313  DO9MH 9A3TR RR73
163615 +16  492  KH8WW 9A3TR JN86 (x4)
164000 -11  493  9A3TR IK2TPX JN45
164015 +14 1267  KH8WW 9A3TR R-23 (x2)

40m

UTC    dB Audio  Message
084515  -9 2347  9A3TR IK2ZJR JN45
174730  -9 2067  ZS6BUN 9A3TR JN64
174800  -5 2067  CQ 9A3TR JN64                         a1
174830  -2 2067  UX7QV 9A3TR +01 (x2)
175000  -2 2067  CQ 9A3TR JN64
175015  +6  355  9A3TR M0BEW -05
175030  -8 2066  M0BEW 9A3TR R+09
175045  +9  355  9A3TR M0BEW RR73
175100  +1 2067  M0BEW 9A3TR 73
175130  -1 2067  CQ 9A3TR JN64 (x4)
175345  -5 1809  9A3TR SP4WSL JO93

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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