JM1EMX/QRP — 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

Receiver-side FT8 activity involving JM1EMX/QRP, decoded by SO8OO in southeastern Poland. 14 FT8 messages attributed to this token as transmitter, on 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-08-17.

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 14 FT8 messages attributed to JM1EMX/QRP as the transmitting token by decoded message structure across 4 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 -13 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-13 dB

Estimated median S/N

Bands

20m · 14

First attributed message: 2026-06-10
Last attributed message: 2026-08-17 18:45 UTC

Observed FT8 message patterns

Attributed sample: 14 messages
Active dates: 4 UTC dates
Estimated median S/N: -13 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 3, moderate (-15 to -9 dB) 7, strong (≥ -8 dB) 4.

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 JM1EMX/QRP in decoded directed-looking exchanges:

8B81KB · Indonesia ×2 8B81JB · Indonesia 8B81JG · Indonesia 8B81JT · Indonesia TM44RT · France

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	JM1EMX/QRP S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-28 17:31	40m	- / -	R9FFJ	-5 / -	3	Partial capture
10-27 19:22	40m	- / -11	EA2DDE	0 / -	3	Partial capture
08-17 18:44	20m	- / -3	EA7CPW	0 / -	2	Partial capture
08-17 18:40	20m	- / -13	F4HFS	-5 / -	3	Partial capture
08-17 18:27	20m	- / -	G3RKF	-15 / -	2	Partial capture
08-17 18:17	20m	- / -10	F4HFS	+4 / -	3	Partial capture
08-14 20:42	20m	- / -9	EC3A	-6 / -	2	Partial capture
08-14 20:31	20m	- / -15	EC3A	-11 / -	2	Partial capture
08-10 19:46	20m	- / -	IU5HIU	-7 / -	3	Partial capture
08-10 19:45	20m	- / -8	IU4PTA	-11 / -	4	Partial capture
08-10 19:41	20m	- / -	<...>	-11 / -	2	✓ Closing fragment
08-10 18:43	20m	- / -19	M0CKX	-16 / -	2	Partial capture
08-10 18:41	20m	- / -	<...>	-16 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
173800  -6 2988  JM1EMX/QRP <...> 73
192230  -3 2990  JM1EMX/QRP EA2DDE IN92 (x3)
173145  -8 2989  JM1EMX/QRP R9FFJ LO76 (x3)
202500  +4 3050  JM1EMX/QRP <...> 73

20m

UTC    dB Audio  Message
183100 -21 2489  JM1EMX/QRP GM3CQD IO85
183745  -4 1507  JM1EMX/QRP F4HFS R-08
183815  +4 1507  8B81KB JM1EMX/QRP 73
183945 -10 1504  JM1EMX/QRP F4ACR R+19
184015 -14 2482  JM1EMX/QRP EA5W IM97
184045 -11 1507  JM1EMX/QRP F4HFS JN18 (x3)
184215  -8 1507  8B81JB JM1EMX/QRP 73
184230  -9 2482  JM1EMX/QRP EA5W R-18
184300 -10 2482  TM44RT JM1EMX/QRP 73
184430  +2 2654  JM1EMX/QRP EA7CPW IM86 (x2)
184530  +0 2654  8B81JG JM1EMX/QRP 73
174430  +8 2754  JM1EMX/QRP <...> 73

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

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee