DO9SMS — 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: Fed. Rep. of Germany Most frequent locator attributed to this token: JO42

Receiver-side FT8 activity involving DO9SMS, decoded by SO8OO in southeastern Poland. 139 FT8 messages attributed to this token as transmitter, on 160m, 80m, 10m, across 11 UTC dates in the available aggregate history. Observed between 2026-06-26 and 2026-10-21.

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 139 FT8 messages attributed to DO9SMS as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (86%), followed by 160 m (13%) and 10 m (1%). Most decodes (81%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (81%); the estimated median was +1 dB.

Overview

139

Messages attributed

UTC dates decoded

Active 15-min windows

+1 dB

Estimated median S/N

Bands

160m · 18 80m · 119 10m · 2

First attributed message: 2026-06-26
Last attributed message: 2026-10-21 20:25 UTC

Observed FT8 message patterns

Attributed sample: 139 messages
Active dates: 11 UTC dates
Estimated median S/N: +1 dB
Estimated 10th-90th percentile: -12 to +14 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 8, moderate (-15 to -9 dB) 19, strong (≥ -8 dB) 112.

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 DO9SMS in decoded directed-looking exchanges:

IC8TEM · Italy DG4BZ · Fed. Rep. of Germany G4UJS · England IK4IDY · Italy ON8WR · Belgium 9A5E · Croatia F1HSY · France IU1HGN · Italy N0BUZ · United States OH6GEP · Finland R5AV · European Russia RX3ASQ · European Russia

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 DO9SMS

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: JO42 · 102 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 934 km (approx.)
Last such locator decoded: 2026-10-21 20:24 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	DO9SMS S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-21 20:23	80m	+12 / +4	OH6GEP	-8 / -9	6	✓ Full exchange observed
10-17 22:31	160m	-6 / -	UA9OR	- / -	2	Partial capture
10-17 22:29	160m	-6 / -21	IK4IDY	-10 / -8	5	✓ Full exchange observed
10-17 22:26	160m	-4 / -	G4UJS	- / -16	2	✓ Closing fragment
10-10 22:00	80m	+8 / -	SQ9UJ	- / -	5	Partial capture
10-10 21:58	80m	-4 / -	D2UY	- / -	2	Partial capture
10-10 21:55	80m	-4 / -	D2UY	- / -	4	Partial capture
10-10 21:52	80m	- / -7	YO3GNF	-9 / -	3	✓ Closing fragment
10-10 21:47	80m	-18 / -	F1HSY	- / -2	2	✓ Closing fragment
10-10 21:47	80m	-20 / -6	IU1HGN	-15 / -18	5	✓ Full exchange observed
10-10 21:46	80m	-16 / -10	R5AV	-3 / -	3	✓ Closing observed
10-07 18:22	80m	-7 / -2	9A5E	-4 / +4	5	✓ Full exchange observed
10-07 18:21	80m	0 / -	TA3GO	- / -10	3	✓ Closing fragment
10-07 18:16	80m	-5 / -	TA3GO	- / -	5	Partial capture
10-07 05:35	80m	+14 / -	N8F	- / -	4	Partial capture
10-07 04:54	80m	+10 / -	N0BUZ	- / -8	6	✓ Closing fragment
10-07 04:45	80m	-2 / -	WF2A	- / -	4	Partial capture
10-07 04:41	80m	-8 / -	WF2A	- / -	2	Partial capture
10-05 18:42	160m	-14 / -	DG4BZ	- / +6	2	✓ Closing fragment
10-05 18:41	160m	-10 / -	ON8WR	- / -19	2	✓ Closing fragment
10-05 18:35	80m	-15 / -	UA6LQZ	- / -9	3	Partial capture
10-05 18:32	80m	-14 / -	TF3VS	- / -6	2	✓ Closing fragment
10-05 18:29	80m	-7 / -10	RX3ASQ	-1 / +1	5	✓ Full exchange observed
10-05 04:37	80m	-4 / -	HK3TY	- / -	4	Partial capture
10-05 04:33	80m	+3 / -	YV6BXN	- / -	5	Partial capture
10-04 20:56	80m	+6 / -	UA0TP	- / -	5	Partial capture
10-04 20:52	80m	-6 / -	JH0INP	- / -	2	Partial capture
10-03 21:53	80m	+4 / -	TJ1GD	- / -	4	Partial capture
10-02 21:41	80m	+6 / -	R7IA	- / -	2	Partial capture
08-22 20:52	80m	+14 / -	DL4BCY	-4 / +2	5	Partial capture
08-22 20:47	80m	+13 / -	OH7FES	-8 / -8	15	Partial capture
08-22 20:38	80m	+11 / -	ZS6WAB	- / -	17	Partial capture
08-07 15:53	10m	- / +3	IC8TEM	-14 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
215630  -8 2713  D2UY DO9SMS JO42 (x3)
220045  +6 2690  SQ9UJ DO9SMS JO42 (x5)
221630 +16 2953  VP2MAA DO9SMS JO42
202345 +13  738  OH6GEP DO9SMS JO42 (x2)
202430 -12  297  DO9SMS OH6GEP +04
202445 +15  738  OH6GEP DO9SMS R-09
202500  -4  298  DO9SMS OH6GEP RR73
202515  +9  738  OH6GEP DO9SMS 73

160m

UTC    dB Audio  Message
222630 -10  910  G4UJS DO9SMS R-16 (x2)
222730  -2  910  CQ DO9SMS JO42 (x5)
222945  -7 1320  DO9SMS IK4IDY JN54
223000  -5  910  IK4IDY DO9SMS -08
223015 -10 1320  DO9SMS IK4IDY R-21
223030  -7  910  IK4IDY DO9SMS RR73
223045 -12 1320  DO9SMS IK4IDY 73
223130  -6  910  UA9OR DO9SMS JO42 (x2)
202900  -1 2519  CQ DO9SMS JO42

10m

UTC    dB Audio  Message
155330 -11 2497  DO9SMS IC8TEM R+03 (x2)

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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