M9SDD — 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: England Most frequent locator attributed to this token: IO83

Receiver-side FT8 activity involving M9SDD, decoded by SO8OO in southeastern Poland. 405 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 8 UTC dates in the available aggregate history. Observed between 2026-08-25 and 2026-09-02.

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 405 FT8 messages attributed to M9SDD as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (80%), followed by 40 m (20%). Most decodes (77%) fell within the six-hour window 17:00-23:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7.1 dB.

Overview

405

Messages attributed

UTC dates decoded

Active 15-min windows

-7.1 dB

Estimated median S/N

Bands

40m · 79 20m · 326

First attributed message: 2026-08-25
Last attributed message: 2026-09-02 22:44 UTC

Observed FT8 message patterns

Attributed sample: 405 messages
Active dates: 8 UTC dates
Estimated median S/N: -7.1 dB
Estimated 10th-90th percentile: -17 to +3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 57, moderate (-15 to -9 dB) 122, strong (≥ -8 dB) 226.

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 M9SDD in decoded directed-looking exchanges:

4L7T · Georgia ×2 DK7ZT · Fed. Rep. of Germany ×2 KG4OJT · Guantanamo Bay ×2 LZ2CC · Bulgaria ×2 N2BJ · United States ×2 RL4R · European Russia ×2 YO4NF · Romania ×2 VE9HEM · Canada ×2 9A5E · Croatia DD1UN · Fed. Rep. of Germany EA1JVG · Spain EA3ML · Spain

Attributed messages by UTC hour

Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.

Most frequent locator attributed to M9SDD

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: IO83 · 256 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,744 km (approx.)
Last such locator decoded: 2026-09-02 22:44 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	M9SDD S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-03 07:37	40m	- / -	DK7UY	-7 / -	8	Partial capture
09-03 07:28	40m	- / -	DK9FE	+6 / -	4	Partial capture
09-03 07:19	40m	- / -	DK7UY	-4 / -	2	Partial capture
09-03 07:16	40m	- / -4	F4IEW	-19 / -	2	Partial capture
09-03 07:09	40m	- / -	ON4KEB	-6 / -	5	Partial capture
09-03 07:09	40m	- / +2	PI4DX	0 / -	2	✓ Closing fragment
09-03 07:03	40m	- / -14	DL5NDD	-7 / -	4	✓ Closing fragment
09-03 06:59	40m	- / -	UX7QV	-7 / -	6	Partial capture
09-03 06:58	40m	- / -	DK7ZT	-11 / -	3	✓ Closing fragment
09-02 22:43	40m	0 / -16	UI6O	+7 / -	4	Partial capture
09-02 22:41	40m	- / -4	EC3A	-14 / -	2	Partial capture
09-02 22:41	40m	- / -	F5PBG	-4 / -	2	Partial capture
09-02 22:33	40m	-14 / -	SV9QWC	- / -	4	Partial capture
09-02 22:31	40m	-5 / -16	SV9QWC	-16 / -	2	Partial capture
09-02 22:28	40m	-5 / -	SP3JZR	- / -1	2	Partial capture
09-02 22:21	40m	-10 / -4	F5RRS	+10 / -15	5	✓ Full exchange observed
09-02 22:18	40m	-18 / -10	RX3ASQ	-7 / -8	6	✓ Full exchange observed
09-02 22:17	40m	-11 / -18	UA9CR	-6 / -3	6	Partial capture
09-02 22:17	40m	- / -	F5RRS	+7 / -	4	Partial capture
09-02 22:17	40m	- / -13	YO4NF	-13 / -	3	✓ Closing fragment
09-02 22:07	40m	-12 / -1	UN7LZ	+2 / -	3	✓ Closing observed
09-02 22:05	40m	-9 / -9	UI6O	-1 / -	23	Partial capture
09-02 22:02	40m	-7 / -13	EX7CQ	-8 / -	2	Partial capture
09-02 13:28	40m	- / -6	DK7ZT	-17 / -	3	Partial capture
09-02 07:53	40m	- / -9	PD1AC	-19 / -	2	Partial capture
09-02 07:51	40m	- / -15	OT4R	-12 / -	2	Partial capture
09-02 07:50	40m	- / -	PD1AC	-17 / -	2	Partial capture
09-02 07:42	40m	- / -	DM5KK	+10 / -	3	Partial capture
09-02 07:16	40m	- / -	ON4KEB	-7 / -	10	Partial capture
09-02 07:09	40m	- / -14	OH1LA	-22 / -	5	Partial capture
09-02 07:09	40m	- / -	ON4KEB	-3 / -	3	Partial capture
09-02 07:04	40m	- / -	ON8MA	-12 / -	2	Partial capture
09-02 07:04	40m	- / -14	DK7ZT	-10 / -	2	Partial capture
09-01 22:52	40m	-17 / -4	9A3AUH	-4 / -7	9	✓ Full exchange observed
09-01 22:49	40m	-11 / -	TF8KW	-14 / -	5	✓ Closing observed
09-01 22:46	40m	-10 / -	TF8KW	- / -	2	Partial capture
09-01 22:38	40m	-7 / -13	VE9HEM	-8 / -2	15	✓ Full exchange observed
09-01 22:35	40m	-8 / -	SN100PKP	+8 / -	3	Partial capture
09-01 22:06	40m	- / -6	TF8KW	-12 / -	18	Partial capture
09-01 22:04	40m	-8 / +1	DH1KJ	+4 / -	3	Partial capture
09-01 22:02	40m	-12 / -	4X1UF	- / -	4	Partial capture
09-01 21:59	40m	-23 / -	I5HLK	- / -	3	Partial capture
09-01 21:57	40m	-14 / -	DF0NN	-13 / -9	2	Partial capture
09-01 21:56	40m	- / -	PD0LBY	-10 / -	3	Partial capture
09-01 21:55	40m	-13 / -4	DL3MIB	+10 / -	5	✓ Closing observed
09-01 21:53	40m	-15 / -2	OZ7DR	+4 / -10	5	✓ Full exchange observed
09-01 21:53	40m	- / +2	DF0NN	-10 / -	3	Partial capture
09-01 21:46	40m	-17 / +1	DD1UN	+3 / -	6	Partial capture
09-01 21:45	40m	- / -	PD0LBY	-11 / -	3	Partial capture
09-01 21:43	40m	-18 / +3	G5GDX	-12 / -12	5	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
072600 -23 1670  M9SDD G4RIQ -19
072800  +7  431  M9SDD DK9FE JO40 (x4)
073430 -10  539  M9SDD GJ0KYZ RR73
073600 -14 2638  M9SDD F1PBZ -09
073700  -5  539  M9SDD DK7UY JO44 (x8)

20m

UTC    dB Audio  Message
075330 -20 2016  M9SDD OH1LA KP01
075330  +0 2236  M9SDD IQ4JO JN63
075330 -13 1512  M9SDD 9A4ZM JN86
075400 -14 2016  M9SDD OH1LA KP01
075400 -12 1512  M9SDD 9A4ZM JN86
075415 -15 1516  CQ M9SDD IO83
075430 -16 2016  M9SDD OH1LA KP01
075430 -14 1516  M9SDD EA2BHE IN83
075615 -18 1515  OH1LA M9SDD -04 (x7)

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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