OH1TSM — 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: Finland Most frequent locator attributed to this token: KP11

Receiver-side FT8 activity involving OH1TSM, decoded by SO8OO in southeastern Poland. 1,651 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, across 47 UTC dates in the available aggregate history. Observed between 2026-08-26 and 2026-11-05.

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 1,651 FT8 messages attributed to OH1TSM as the transmitting token by decoded message structure across 47 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (47%), followed by 160 m (31%) and 40 m (22%). Most decodes (58%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (82%); the estimated median was 0 dB.

Overview

1,651

Messages attributed

UTC dates decoded

270

Active 15-min windows

0 dB

Estimated median S/N

Bands

160m · 507 80m · 776 40m · 368

First attributed message: 2026-08-26
Last attributed message: 2026-11-05 23:23 UTC

Observed FT8 message patterns

Attributed sample: 1,651 messages
Active dates: 47 UTC dates
Estimated median S/N: 0 dB
Estimated 10th-90th percentile: -12 to +10 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 95, moderate (-15 to -9 dB) 195, strong (≥ -8 dB) 1,361.

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 OH1TSM in decoded directed-looking exchanges:

R3ICU · European Russia ×2 RY9C · Asiatic Russia ×2 RZ0SW · Asiatic Russia ×2 UA0SCF · Asiatic Russia ×2 DS4AKP · Republic of Korea ×2 IT9FEG · Sicily ×2 F4EWK · France ×2 PW8BR · Brazil ×2 4J3DJ · Azerbaijan DG7JG · Fed. Rep. of Germany EA1RJ · Spain EC1AIJ · 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 OH1TSM

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: KP11 · 925 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,288 km (approx.)
Last such locator decoded: 2026-11-05 23:23 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	OH1TSM S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-05 23:19	80m	+2 / -	AJ6T	- / -	5	Partial capture
11-05 23:07	80m	+1 / -	NE9U	- / -22	12	Partial capture
11-05 21:47	80m	-13 / -7	OH8WW	0 / -	3	✓ Full exchange observed
11-04 23:20	40m	-22 / -	K4PWM	- / -	2	Partial capture
11-04 23:13	80m	-6 / -	BD3MN	- / -7	2	Partial capture
11-04 23:11	80m	-6 / -	EA8BBJ	- / -25	3	✓ Closing fragment
11-04 23:06	160m	-3 / -	R6UA	- / -16	5	Partial capture
11-04 20:21	80m	+5 / -	TR8CA	- / -	11	Partial capture
11-04 19:10	40m	-9 / -	EA5JXP	- / -	2	Partial capture
11-04 19:08	40m	-16 / -	R4GM	- / -10	2	Partial capture
11-04 19:06	40m	-14 / -	G7RAU	- / +5	2	✓ Closing fragment
11-04 19:02	80m	-11 / -	JA9RRH	- / -	3	Partial capture
11-04 17:35	80m	-4 / -	OH5GQF	-11 / +5	3	✓ Full exchange observed
11-04 17:33	80m	- / -	UX7UU	+8 / -	4	Partial capture
11-04 17:32	80m	-3 / -	OG1C	-13 / -3	4	✓ Closing observed
11-04 17:29	80m	-4 / -	RL8C	- / -8	4	✓ Closing fragment
11-04 17:27	80m	-13 / -	JA8JTZ	- / -	2	Partial capture
11-04 15:36	40m	-14 / -	R8KAN	- / -	2	Partial capture
11-04 14:38	80m	- / -	UB4FGK	-22 / -	4	Partial capture
11-04 14:37	80m	-3 / -	OH2IS	- / -8	4	✓ Closing fragment
11-04 06:12	40m	-3 / -	SP1TJ	-6 / -	4	✓ Closing observed
11-04 04:49	80m	-10 / -	N4DWD	- / -	2	Partial capture
11-04 04:35	80m	-5 / -	N4DWD	- / -	4	Partial capture
11-03 09:32	40m	- / -	DH1NGL	-8 / -	3	Partial capture
11-03 09:32	40m	- / +3	DK1WU	-4 / -	2	Partial capture
11-03 09:29	40m	-10 / -	F6JSZ	- / -	2	Partial capture
11-02 23:01	80m	-3 / -	OH6DQA	- / -	2	Partial capture
11-02 22:49	160m	+3 / -4	OH2NNE	-4 / -6	4	✓ Full exchange observed
11-02 22:47	160m	+5 / -	OH7KM	+10 / -9	4	✓ Closing observed
11-02 21:40	160m	-3 / -	F5JAE	- / -	2	Partial capture
11-02 21:32	80m	-6 / -	VK6DW	- / -21	7	Partial capture
11-02 21:30	80m	-4 / -	UF5F	- / -	2	Partial capture
11-02 05:54	40m	-13 / -	OA4ENG	- / -25	3	Partial capture
11-02 05:53	40m	- / -	SV1DKR	-14 / -	2	Partial capture
11-02 05:49	40m	-3 / -	RA3TVW	- / -	6	✓ Closing fragment
11-02 05:47	40m	+2 / -	PA40EUDXF	- / -7	2	Partial capture
11-01 23:22	80m	-2 / -	VE3DZ	- / -21	3	Partial capture
11-01 22:59	80m	-2 / +7	OH1HB	-2 / -	5	✓ Full exchange observed
11-01 22:59	80m	-12 / -	OH6Z	-8 / -	3	Partial capture
11-01 22:58	80m	-6 / -	OH4LRP	- / -18	2	Partial capture
11-01 22:56	80m	-6 / -	OH6Z	- / -	2	Partial capture
11-01 22:51	80m	+1 / -	WA2BCK	- / -18	6	Partial capture
11-01 22:48	80m	-5 / -	VE3DZ	- / -	2	Partial capture
11-01 17:22	80m	-6 / -	OH3AA	- / +2	3	✓ Closing fragment
11-01 17:19	80m	+3 / -	OG3E	- / -7	3	✓ Closing fragment
11-01 17:17	80m	+3 / -14	OI6C	+4 / -	4	✓ Closing observed
11-01 15:36	80m	-2 / -	JT1BV	- / -	6	Partial capture
10-31 01:46	160m	- / -	UA3IAP	-5 / -	8	Partial capture
10-31 01:42	160m	+5 / -	I1WXY	-15 / -10	3	✓ Closing observed
10-31 01:26	80m	+12 / -	HK4EIC	- / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
230800  +4 2314  NE9U OH1TSM R-22 (x10)
231945  +4 1325  AJ6T OH1TSM KP11 (x5)

40m

UTC    dB Audio  Message
061300  -3  724  SP1TJ OH1TSM 73
153615 -11 1686  R8KAN OH1TSM KP11 (x2)
190530  -3 2270  R4GM OH1TSM -14
190630 -13 2328  G7RAU OH1TSM +05 (x2)
190800 -16 2332  R4GM OH1TSM KP11 (x2)
191030 -12 1089  EA5JXP OH1TSM KP11 (x2)
231930 -13 2556  NZ3C OH1TSM -11
232045 -23 2144  K4PWM OH1TSM KP11 (x2)
213600 -18 2218  BG7BVP OH1TSM -15
213800 -17 1177  JA8DBU OH1TSM KP11

160m

UTC    dB Audio  Message
214200  -3  619  OH3HE OH1TSM KP11
224730  +2 2332  OH7KM OH1TSM KP11 (x2)
224815 +10 2014  OH1TSM OH7KM RR73
224830  +9 2332  OH7KM OH1TSM 73
224930  +4 2275  OH2NNE OH1TSM KP11
224945  -4 2668  OH1TSM OH2NNE -04
225000  +5 2275  OH2NNE OH1TSM R-06 (x2)
225230  +2 2275  SM1HEV OH1TSM KP11
230615  -4 2202  R6UA OH1TSM -16 (x5)

10m

UTC    dB Audio  Message
153800 -21 1596  OH1TSM CR7BUW IM58

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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