JR2NMJ — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

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

Receiver-side FT8 activity involving JR2NMJ, decoded by SO8OO in southeastern Poland. 11 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-08-06 and 2026-10-18.

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 11 FT8 messages attributed to JR2NMJ as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (91%), followed by 40 m (9%). In this small sample, the estimated median decoder S/N was -19 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-19 dB

Estimated median S/N

Bands

80m · 10 40m · 1

First attributed message: 2026-08-06
Last attributed message: 2026-10-18 20:34 UTC

Observed FT8 message patterns

Attributed sample: 11 messages
Active dates: 4 UTC dates
Estimated median S/N: -19 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 8, moderate (-15 to -9 dB) 3, 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 JR2NMJ in decoded directed-looking exchanges:

EW6BZ · Belarus ×2 ON6AA · Belgium LB7ZG · Norway PD3ED · Netherlands 5B4AMM · Cyprus EA6Y · Balearic Islands LA9GX · Norway OM3PC · Slovak Republic OM3TWM · Slovak Republic ON4IQ · Belgium SA2ENN · Sweden SQ5EBM · Poland

Most frequent locator attributed to JR2NMJ

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 · 8 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,586 km (approx.)
Last such locator decoded: 2026-10-18 20:34 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	JR2NMJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-29 14:36	80m	- / -17	LA9GX	-5 / -	2	✓ Closing fragment
10-29 14:32	80m	- / -18	SA2ENN	-22 / -	2	✓ Closing fragment
10-26 20:13	80m	- / -19	SQ5EBM	+21 / -	3	✓ Closing fragment
10-25 20:46	80m	- / -17	4O4A	+17 / -	3	Partial capture
10-25 20:34	80m	- / -17	4O4A	+18 / -	3	Partial capture
10-24 20:34	80m	- / -19	4O4A	+13 / -	3	Partial capture
10-18 20:41	80m	- / -15	EA6Y	-1 / -	2	✓ Closing fragment
10-18 20:27	80m	-22 / -	LA9GX	- / -	2	Partial capture
10-14 20:09	80m	- / -18	EW6BZ	-4 / -	2	✓ Closing fragment
10-13 20:50	80m	- / -22	EW6BZ	+13 / -	2	✓ Closing fragment
10-12 20:51	80m	- / -17	YU0U	+4 / -	2	✓ Closing fragment
10-12 20:47	80m	-14 / -	HB9BLQ	- / -	2	Partial capture
10-12 20:43	80m	-20 / -	HB9BLQ	- / -14	2	Partial capture
10-01 20:49	80m	- / -18	5B4AMM	+5 / -	2	✓ Closing fragment
09-15 19:00	40m	- / -16	LB7ZG	+14 / -	4	✓ Closing fragment
09-09 18:38	80m	- / -17	ON4IQ	+10 / -	2	✓ Closing fragment
08-31 20:14	80m	- / -14	OM3PC	+18 / -	2	✓ Closing fragment
08-14 20:05	80m	- / -20	TA3GO	-4 / -	2	✓ Closing fragment
08-14 20:02	80m	- / -	RO2X	+2 / -	6	Partial capture
08-13 19:20	20m	- / -8	ON6AA	-3 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
203500 +13 2702  JR2NMJ 4O4A -19 (x7)
201345 +21 2909  JR2NMJ SQ5EBM -19 (x3)
143230 -24 2670  JR2NMJ SA2ENN -18 (x2)
143600  -5  572  JR2NMJ LA9GX R-17 (x2)
200215 -10 2504  JR2NMJ TF4M RRR

40m

UTC    dB Audio  Message
201315 -14 2982  CN8NS JR2NMJ PM85
185900  -8  231  JR2NMJ PD3ED RR73
190000 +14 2797  JR2NMJ LB7ZG JP50 (x4)

10m

UTC    dB Audio  Message
114100 -20 1748  JR2NMJ F4FSY -09

20m

UTC    dB Audio  Message
192015  -4 1579  JR2NMJ ON6AA JO11 (x3)

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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