JH2AMN — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Japan Most frequent locator attributed to this token: PM85

Receiver-side FT8 activity involving JH2AMN, decoded by SO8OO in southeastern Poland. 22 FT8 messages attributed to this token as transmitter, on 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-08-24 and 2026-09-12.

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 22 FT8 messages attributed to JH2AMN as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-12 dB

Estimated median S/N

Bands

40m · 22

First attributed message: 2026-08-24
Last attributed message: 2026-09-12 20:47 UTC

Observed FT8 message patterns

Attributed sample: 22 messages
Active dates: 3 UTC dates
Estimated median S/N: -12 dB
Estimated 10th-90th percentile: -16 to -6 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 3, moderate (-15 to -9 dB) 13, strong (≥ -8 dB) 6.

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 JH2AMN in decoded directed-looking exchanges:

9A3TN · Croatia DL3BH · Fed. Rep. of Germany LB7ZG · Norway ON4IQ · Belgium RN2F · Kaliningrad UA0L · Asiatic Russia VK6BAD · Australia

Most frequent locator attributed to JH2AMN

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: PM85 · 12 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,586 km (approx.)
Last such locator decoded: 2026-09-12 20:40 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	JH2AMN S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-12 20:58	40m	- / -17	9A3TN	+11 / -	3	✓ Closing fragment
09-12 20:48	40m	- / -	9A3TN	+10 / -	2	Partial capture
09-12 20:46	40m	-14 / -	VK6BAD	- / -14	2	✓ Closing fragment
09-12 20:44	40m	-15 / -15	LB7ZG	+4 / -	4	✓ Closing observed
09-12 20:42	40m	- / -	R3LCG	-6 / -	3	Partial capture
09-12 20:40	40m	-20 / -	HB9HSJ	+8 / -	3	Partial capture
09-01 19:59	40m	-14 / -	RI1FJL	- / -15	3	Partial capture
08-24 20:55	40m	- / -18	DL3BH	-2 / -	2	✓ Closing fragment
08-24 20:47	40m	-6 / -	RN2F	+5 / -	4	✓ Closing observed
08-24 20:39	40m	-7 / +1	RN2F	-2 / -	9	Partial capture
08-24 20:37	40m	-8 / -	ON4IQ	+14 / -	2	✓ Closing observed
08-24 20:34	40m	-12 / -	RN2F	- / -	2	Partial capture
08-24 20:32	40m	-12 / -	GJ0KYZ	- / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
204245  -2 2383  JH2AMN R3LCG KO64 (x3)
204415  +2 2969  JH2AMN LB7ZG JP50 (x2)
204500 -15 2520  LB7ZG JH2AMN RR73
204515  +5 2969  JH2AMN LB7ZG 73
204600 -14 2520  UA0L JH2AMN 73
204630 -14 2520  VK6BAD JH2AMN -14 (x2)
204815  +9 1855  JH2AMN 9A3TN JN85 (x5)

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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