MM8JST — 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: Scotland Most frequent locator attributed to this token: IO75

Receiver-side FT8 activity involving MM8JST, decoded by SO8OO in southeastern Poland. 10 FT8 messages attributed to this token as transmitter, on 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-19 and 2026-08-30.

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 10 FT8 messages attributed to MM8JST as the transmitting token by decoded message structure across 6 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 -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

20m · 10

First attributed message: 2026-06-19
Last attributed message: 2026-08-30 10:34 UTC

Observed FT8 message patterns

Attributed sample: 10 messages
Active dates: 6 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) 2, 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 MM8JST in decoded directed-looking exchanges:

4L7T · Georgia EA5ISM · Spain IU1DXU · Italy DL3EBJ · Fed. Rep. of Germany F4GRW · France LA8ENA · Norway

Most frequent locator attributed to MM8JST

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: IO75 · 7 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,894 km (approx.)
Last such locator decoded: 2026-08-30 10:34 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	MM8JST S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-19 19:33	40m	- / -13	EG46PPA	-13 / -	2	Partial capture
10-19 19:30	40m	- / -16	ON8LX	+4 / -	3	Partial capture
10-19 19:27	40m	- / -8	LA8ENA	-15 / -	2	✓ Closing fragment
10-18 20:16	40m	- / -1	DL3EBJ	+1 / -	2	✓ Closing fragment
10-18 20:13	40m	- / -11	ON2BCB	-4 / -	8	Partial capture
10-18 20:11	40m	- / -16	F4GRW	-11 / -	2	✓ Closing fragment
09-17 11:07	40m	- / -20	DK7ZT	-19 / -	2	Partial capture
08-30 12:48	20m	- / -7	IN3WZS	-7 / -	6	Partial capture
08-30 12:30	20m	- / -20	IU1DXU	-11 / -	7	✓ Closing fragment
08-23 09:30	20m	- / -20	EA5ISM	-18 / -	2	✓ Closing fragment
08-16 19:24	20m	- / -19	4L7T	-8 / -	2	✓ Closing fragment
08-16 18:16	20m	- / -24	RA3Y	-8 / -	5	Partial capture
08-01 19:10	20m	- / -18	DL0BLK	-19 / -	2	Partial capture
08-01 18:30	20m	- / -16	OE9PKV	-8 / -	2	Partial capture
08-01 17:42	20m	- / +3	GX0ERG	+2 / -	2	Partial capture
07-25 21:40	20m	- / -12	3A2MW	-18 / -	4	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
201500  -3 1840  MM8JST ON2BCB -11 (x4)
201630  +1 2286  MM8JST DL3EBJ -01
201700  -3 1840  MM8JST ON2BCB -11
201700  +1 2286  MM8JST DL3EBJ RR73
201730  -5 1840  MM8JST ON2BCB -11
192730 -14 2171  MM8JST LA8ENA -08 (x2)
193015  +5  707  MM8JST ON8LX -16 (x3)
193345  -9  846  MM8JST EG46PPA -13 (x2)

20m

UTC    dB Audio  Message
095500 -17 1485  EA3NG MM8JST R+06
103445 -18 1244  R6OP MM8JST IO75
123015 -13 1474  MM8JST IU1DXU -20 (x7)
124815  -8 2085  MM8JST IN3WZS -07 (x6)

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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