JP1LRT — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Japan Most frequent locator attributed to this token: PM95

Receiver-side FT8 activity involving JP1LRT, decoded by SO8OO in southeastern Poland. 11 FT8 messages attributed to this token as transmitter, on 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-18 and 2026-06-19.

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 11 FT8 messages attributed to JP1LRT as the transmitting token by decoded message structure across 2 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 -15 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-15 dB

Estimated median S/N

Bands

20m · 11

First attributed message: 2026-06-18
Last attributed message: 2026-06-19 21:55 UTC

Observed FT8 message patterns

Attributed sample: 11 messages
Active dates: 2 UTC dates
Estimated median S/N: -15 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 7, strong (≥ -8 dB) 0.

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 JP1LRT in decoded directed-looking exchanges:

DL1NCH · Fed. Rep. of Germany DL1R · Fed. Rep. of Germany EW1MN · Belarus EW4DX · Belarus IZ2CPP · Italy R6ZE · European Russia UA6CE · European Russia YU5BU · Serbia RC9WC · Asiatic Russia

Most frequent locator attributed to JP1LRT

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: PM95 · 2 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,693 km (approx.)
Last such locator decoded: 2026-06-19 21:47 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	JP1LRT S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-16 15:33	40m	- / -16	RC9WC	-17 / -	2	✓ Closing fragment
08-06 22:41	20m	- / -12	UA6CE	+12 / -	2	✓ Closing fragment
08-06 22:33	20m	- / -23	YU5BU	-17 / -	3	✓ Closing fragment
08-06 22:31	20m	- / -10	DL1R	+2 / -	4	✓ Closing fragment
08-06 22:19	20m	- / -20	DB1IUA	-8 / -	2	Partial capture
08-04 15:18	20m	- / -	R6ZE	+2 / -	2	✓ Closing fragment
08-04 15:13	20m	- / -	EW4DX	-6 / -	2	✓ Closing fragment
08-04 14:58	20m	- / -13	IZ2CPP	+11 / -	3	✓ Closing fragment
08-04 14:56	20m	- / -	ON7KEC	-10 / -	2	Partial capture
08-04 14:55	20m	- / -	DL1R	-5 / -	6	Partial capture
08-04 14:44	20m	- / -	G7RDX	-24 / -	2	Partial capture
08-04 14:43	20m	- / -20	PD3RM	-3 / -	3	Partial capture
07-18 16:50	20m	- / -13	EW1MN	-8 / -	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
153345 -17 1974  JP1LRT RC9WC -16 (x2)

20m

UTC    dB Audio  Message
153930  -2 2922  JP1LRT IU3IOV JN55
154200  +5 2921  JP1LRT IK1MJK/P JN35
154430  -1 2921  JP1LRT DL2KTH JO31
221900  -8 2616  JP1LRT DB1IUA -20 (x2)
223100  +0 2671  JP1LRT DL1R R-10 (x4)
223300 -16 2121  JP1LRT YU5BU KN03 (x3)
224100 +10 2941  JP1LRT UA6CE -12 (x2)
160800  -9  579  JP1LRT RC6OG KN98

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