JA2XTV — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Japan Most frequent locator attributed to this token: PM94

Receiver-side FT8 activity involving JA2XTV, decoded by SO8OO in southeastern Poland. 12 FT8 messages attributed to this token as transmitter, on 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-08-23 and 2026-08-28.

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 12 FT8 messages attributed to JA2XTV as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was -12 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-12 dB

Estimated median S/N

Bands

20m · 12

First attributed message: 2026-08-23
Last attributed message: 2026-08-28 20:59 UTC

Observed FT8 message patterns

Attributed sample: 12 messages
Active dates: 3 UTC dates
Estimated median S/N: -12 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 5, strong (≥ -8 dB) 2.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with JA2XTV in decoded directed-looking exchanges:

7Q9BK · Malawi 4Z5PT · Israel 7X5CY · Algeria 8Z1IT · Saudi Arabia 9A6NTK · Croatia EA5JLN · Spain M1DZI · England OE2LCM · Austria ON4AOI · Belgium ON5GQ · Belgium PD2RAL · Netherlands SQ9SF · Poland

Most frequent locator attributed to JA2XTV

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: PM94 · 2 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,783 km (approx.)
Last such locator decoded: 2026-08-28 20:59 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	JA2XTV S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-17 20:31	40m	- / -19	M5BFL	+8 / -	2	✓ Closing fragment
09-12 19:58	40m	- / -17	OZ1AXG	+25 / -	2	Partial capture
08-28 20:59	20m	-22 / -8	4Z5PT	-5 / -	3	✓ Closing observed
08-27 21:06	20m	-10 / -	IN3ZWF	+3 / -21	7	Partial capture
08-27 20:55	20m	-17 / -	PD2RAL	-12 / -	2	✓ Closing observed
08-27 20:00	20m	- / -19	M1DZI	+9 / -	2	✓ Closing fragment
08-23 21:39	20m	-7 / -	OZ5FN	- / -19	3	Partial capture
08-23 21:37	20m	-16 / -	SQ9SF	- / -18	2	✓ Closing fragment
08-23 21:35	20m	-11 / -	ON5GQ	- / -13	2	✓ Closing fragment
08-20 23:04	20m	- / -15	II7MGBT	-5 / -	3	Partial capture
08-20 22:16	20m	- / -15	8Z1IT	-10 / -	2	✓ Closing fragment
08-20 21:32	20m	- / -15	EA5JLN	-2 / -	2	✓ Closing fragment
08-20 13:25	20m	- / -14	ON4AOI	-7 / -	2	✓ Closing fragment
08-05 22:06	20m	- / -16	9A6NTK	+3 / -	2	✓ Closing fragment
08-03 12:58	20m	- / -14	OE2LCM	+10 / -	3	✓ Closing fragment
07-28 21:41	40m	- / -	SP3BZU	-10 / -	3	Partial capture
07-23 20:44	40m	- / -20	LZ5UY	-8 / -	2	✓ Closing fragment
07-02 21:23	20m	- / -22	<...>	-16 / -	3	Partial capture
07-02 10:42	10m	- / -3	7Q9BK	-22 / -	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
204400 -10 1235  JA2XTV LZ5UY -20 (x2)
214130  -8 2089  JA2XTV SP3BZU JO72 (x3)
195130 +22 2951  JA2XTV SP6JIU -25
195830 +25 2789  JA2XTV OZ1AXG -17 (x3)
203130  +9 2800  JA2XTV M5BFL -19 (x2)

20m

UTC    dB Audio  Message
200100 +10  299  JA2XTV M1DZI RR73
202215 -16 1602  JA2XTV IT9MRM JM77
205545 -17 1964  PD2RAL JA2XTV PM94
205630 -12 1962  JA2XTV PD2RAL RR73
210530 -21 1109  UT2PC JA2XTV R-08
210645  +6  263  JA2XTV IN3ZWF JN56 (x5)
211000 -11  280  IN3ZWF JA2XTV -21 (x2)
205915 -22 1022  4Z5PT JA2XTV PM94
205930  -6 1021  JA2XTV 4Z5PT -08 (x2)

10m

UTC    dB Audio  Message
104230 -24 1842  JA2XTV 7Q9BK -03 (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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