S50TOM — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Slovenia Most frequent locator attributed to this token: JN76

Receiver-side FT8 activity involving S50TOM, decoded by SO8OO in southeastern Poland. 75 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 15 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-09-18.

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 75 FT8 messages attributed to S50TOM as the transmitting token by decoded message structure across 15 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (79%), followed by 10 m (12%) and 40 m (9%). Most decodes (57%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-9 dB

Estimated median S/N

Bands

40m · 7 20m · 59 10m · 9

First attributed message: 2026-06-11
Last attributed message: 2026-09-18 19:16 UTC

Observed FT8 message patterns

Attributed sample: 75 messages
Active dates: 15 UTC dates
Estimated median S/N: -9 dB
Estimated 10th-90th percentile: -21 to +2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 13, moderate (-15 to -9 dB) 26, strong (≥ -8 dB) 36.

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 S50TOM in decoded directed-looking exchanges:

R3KLE · European Russia SV2JAO · Greece SV5BYP · Dodecanese 5B4AMX · Cyprus A71UN · Qatar CN2DX · Morocco CN8NS · Morocco E70A · Bosnia-Herzegovina E75C · Bosnia-Herzegovina EA5FQ · Spain EW1MN · Belarus F4HIK · France

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 S50TOM

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: JN76 · 41 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 631 km (approx.)
Last such locator decoded: 2026-09-18 19:16 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	S50TOM S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-18 19:16	40m	-10 / -11	SQ6WA	+5 / -	4	Partial capture
09-18 19:15	40m	-16 / -11	9A5E	+8 / -11	5	✓ Full exchange observed
09-18 05:09	40m	-4 / -5	LA3BO	+1 / -	4	Partial capture
08-30 07:50	20m	-3 / +4	Z62NS	-12 / -	3	✓ Closing observed
08-25 20:46	20m	- / -19	LU3DLY	-6 / -	3	Partial capture
08-24 07:17	20m	-1 / -10	EB3DBR	-6 / -	2	Partial capture
08-23 15:09	20m	- / -	ON1AJ	-9 / -	5	Partial capture
08-23 09:39	20m	-6 / -	EA5FQ	-1 / -20	2	✓ Closing observed
08-23 05:58	20m	- / -	EA1IOK	-3 / -	4	Partial capture
08-23 05:56	20m	- / -1	W4IMD	-18 / -	3	✓ Closing fragment
08-22 10:47	10m	- / -	PE9JAN	-24 / -	2	Partial capture
08-21 21:27	20m	- / -12	CN8NS	-8 / -	2	✓ Closing fragment
08-21 21:16	20m	-9 / -	NF3R	0 / -13	3	Partial capture
08-21 20:59	20m	0 / -	I0XNH	- / -16	3	Partial capture
08-21 20:58	20m	-9 / -12	EA5JLN	-11 / -	3	Partial capture
08-12 16:01	10m	- / -10	SV5BYP	-18 / -	2	✓ Closing fragment
08-07 15:42	20m	- / -	TA2ANK	-10 / -	2	✓ Closing fragment
08-07 09:33	10m	- / -8	SV2JAO	-14 / -	2	✓ Closing fragment
08-06 07:32	20m	- / -4	5B4AMX	-18 / -	2	✓ Closing fragment
08-04 19:56	20m	-13 / -8	PY7XC	-8 / -13	5	✓ Full exchange observed
08-04 19:41	20m	- / -11	A71UN	-12 / -	4	✓ Closing fragment
08-03 19:11	20m	- / -13	TN8GD	-20 / -	2	✓ Closing fragment
08-03 18:12	20m	-11 / -	Z62NS	- / -	4	Partial capture
07-20 19:41	10m	- / -13	CT7AUT	-22 / -	3	Partial capture
07-20 15:48	20m	-21 / -13	7Z1BM	-16 / -	5	Partial capture
07-19 15:27	20m	- / -5	M9UTD	-12 / -	2	✓ Closing fragment
07-19 08:29	10m	-20 / -	R3KLE	- / -18	2	✓ Closing fragment
07-18 20:26	20m	-13 / -8	EA8AT	-12 / -	3	Partial capture
07-18 15:42	20m	-14 / -	9A2GU	- / -14	2	Partial capture
07-18 15:40	20m	-14 / -1	SP0VIP	-6 / -21	4	✓ Full exchange observed
07-18 15:36	20m	-11 / -	KF0YOB	- / -21	3	✓ Closing fragment
07-18 10:01	20m	- / +9	OE3KJO	-13 / -	3	✓ Closing fragment
07-18 09:57	20m	- / -9	SP5HQZ	0 / -	2	✓ Closing fragment
07-18 08:31	20m	-19 / -5	SP3RK	-16 / -20	2	Partial capture
07-18 08:16	20m	-20 / -	DB2VS	- / -22	3	Partial capture
07-18 08:16	20m	- / -	DL1HXA	-6 / -	2	Partial capture
07-18 08:15	20m	-12 / -	EW1MN	-7 / -	2	✓ Closing observed
07-18 07:50	20m	- / -11	F4HIK	-6 / -	2	✓ Closing fragment
07-18 07:47	20m	- / 0	SV2HTW	-4 / -	2	✓ Closing fragment
07-17 18:51	20m	- / -5	EA1A	-13 / -	3	Partial capture
07-17 10:18	20m	- / -	PE9JAN	-6 / -	3	Partial capture
07-17 10:17	20m	- / -7	UA6FZ	-6 / -	3	✓ Closing fragment
07-17 07:35	20m	- / -6	E75C	-8 / -	2	✓ Closing fragment
07-16 20:04	20m	- / -3	PY5XT	0 / -	2	✓ Closing fragment
07-16 19:34	40m	- / -7	OE3PBS	-8 / -	2	✓ Closing fragment
07-16 19:17	20m	- / +5	CN2DX	+4 / -	2	✓ Closing fragment
07-16 10:12	20m	-13 / +4	E70A	+2 / -14	6	✓ Full exchange observed
07-16 09:28	20m	- / 0	TF5B	-17 / -	2	✓ Closing fragment
07-14 19:45	20m	- / -10	Z61DX	+2 / -	2	✓ Closing fragment
07-14 19:03	20m	- / -8	RL6MT	-4 / -	10	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
200845 -20 1793  S50TOM EC5M -13
194545 -10 2104  S50TOM G6NHU -15
050945  -3 2543  LA3BO S50TOM JN76 (x2)
051030  +0 2542  S50TOM LA3BO -05 (x2)
191515 -10 2170  9A5E S50TOM JN76
191530  +8 2170  S50TOM 9A5E -11
191545 -22 2170  9A5E S50TOM R-11
191600  +8 2170  S50TOM 9A5E RR73
191615 -15 2170  9A5E S50TOM 73
191645 -10 1337  SQ6WA S50TOM JN76
191730  +7 1337  S50TOM SQ6WA -11 (x3)

20m

UTC    dB Audio  Message
150900  -9 1217  S50TOM ON1AJ JO20 (x5)
183615  -2 1068  S50TOM IS0YHV -06
184045 -11  956  S50TOM G8IXM -13
071700  -1  553  EB3DBR S50TOM JN76
071745  -6  552  S50TOM EB3DBR -10
204645  -5 1914  S50TOM LU3DLY -19 (x3)
075000  -9  781  S50TOM Z62NS +04 (x2)
075045  -3  781  Z62NS S50TOM 73

10m

UTC    dB Audio  Message
082945 -21 2252  R3KLE S50TOM R-18 (x2)
194100 -23 1785  S50TOM CT7AUT -13 (x3)
093330 -13 2253  S50TOM SV2JAO -08 (x2)
160945 -13  744  S50TOM G0RVY +04
160100 -17 1595  S50TOM SV5BYP -10 (x2)
104430 -21 2017  ER3CT S50TOM R-20
104745 -24 1738  S50TOM PE9JAN JO22 (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.

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