OK4TO — 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: Czech Republic Most frequent locator attributed to this token: JN79

Receiver-side FT8 activity involving OK4TO, decoded by SO8OO in southeastern Poland. 116 FT8 messages attributed to this token as transmitter, on 60m, 40m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-07-12 and 2026-10-14.

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 116 FT8 messages attributed to OK4TO as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (59%), followed by 40 m (38%) and 20 m (3%). Several six-hour UTC windows tied for the largest share (78%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (62%); the estimated median was -5 dB.

Overview

116

Messages attributed

UTC dates decoded

Active 15-min windows

-5 dB

Estimated median S/N

Bands

60m · 69 40m · 44 20m · 3

First attributed message: 2026-07-12
Last attributed message: 2026-10-14 07:23 UTC

Observed FT8 message patterns

Attributed sample: 116 messages
Active dates: 5 UTC dates
Estimated median S/N: -5 dB
Estimated 10th-90th percentile: -19 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 20, moderate (-15 to -9 dB) 24, strong (≥ -8 dB) 72.

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 OK4TO in decoded directed-looking exchanges:

OK2QA · Czech Republic ×2 DL2YBG · Fed. Rep. of Germany DL9KM · Fed. Rep. of Germany F4BJN · France HB9ZHK · Switzerland OE8PIT · Austria OK1JR · Czech Republic OK1PHM · Czech Republic S57TW · Slovenia Z62NS · Republic of Kosovo DL2VN · Fed. Rep. of Germany F4GUK · 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 OK4TO

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: JN79 · 55 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 491 km (approx.)
Last such locator decoded: 2026-10-14 07:23 UTC

Other locator fields attributed to this token: JO60 (17).

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	OK4TO S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-14 07:19	40m	-14 / -2	DL2YBG	-20 / -24	4	✓ Full exchange observed
10-14 07:19	40m	- / -	DJ0MAB	-2 / -	3	Partial capture
10-14 07:17	40m	- / 0	S57TW	+3 / -	2	✓ Closing fragment
10-14 07:15	40m	- / -	DL5XL	-12 / -	3	Partial capture
10-14 07:15	40m	- / -	SP1MGM	-9 / -	4	Partial capture
10-14 07:14	40m	- / -	DL6ZOG	-12 / -	2	Partial capture
10-14 07:14	40m	- / -	YO3GNF	-10 / -	2	Partial capture
10-14 07:09	40m	-20 / -	F4BJN	- / -7	2	✓ Closing fragment
10-14 07:09	40m	-12 / -5	OK2QA	-19 / -13	10	✓ Full exchange observed
10-13 07:27	60m	-4 / -	F4GUK	- / -23	2	✓ Closing fragment
10-13 07:24	60m	-2 / -8	ON8LX	-14 / -6	4	✓ Full exchange observed
10-13 07:22	60m	-4 / -	DL6EBC	- / -	2	Partial capture
10-13 07:21	60m	-4 / -	F5SOI	- / -	2	Partial capture
10-13 07:19	60m	-2 / -	G3YQA	- / -11	3	✓ Closing fragment
10-13 07:18	60m	-1 / -	HB9HDK	- / +8	3	✓ Closing fragment
10-13 07:16	60m	-1 / -	F5SOI	- / -	3	Partial capture
10-13 07:16	60m	- / -	DL3BH	-19 / -	2	Partial capture
10-13 07:14	60m	- / -	DL9KM	-18 / -	3	Partial capture
10-13 07:13	60m	-5 / -16	OK2JRQ	-1 / 0	8	✓ Full exchange observed
10-13 07:11	60m	- / -	DL3BH	-20 / -	3	Partial capture
10-13 07:10	60m	-3 / -16	SP5EWX	-9 / -	5	✓ Closing observed
10-13 07:09	60m	-3 / +2	DL2VN	-7 / -10	11	✓ Full exchange observed
10-13 07:08	60m	-6 / -	DL8DCM	- / -	2	Partial capture
10-13 07:03	60m	-2 / -	SP9JZU	-6 / -10	5	✓ Full exchange observed
10-13 07:02	60m	-4 / -	<...>	- / -8	2	✓ Closing fragment
10-13 06:52	60m	- / -	DK2KGB	-11 / -	3	Partial capture
10-13 06:51	60m	-6 / -	F5PBG	- / -11	2	✓ Closing fragment
10-13 06:49	60m	-4 / -	G0AZH	- / -2	2	✓ Closing fragment
10-12 16:53	40m	-6 / -	OK1UG	- / -	2	Partial capture
10-12 16:51	40m	-6 / -	Z62NS	- / -8	2	✓ Closing fragment
10-05 13:24	40m	- / +1	OZ9FF	-10 / -	2	Partial capture
10-05 13:12	40m	- / -	DL7UKM	-3 / -	4	Partial capture
10-05 13:10	40m	- / -	OK2IH	-9 / -	7	Partial capture
10-05 13:10	40m	-20 / +1	OK1PHM	-14 / -5	8	✓ Full exchange observed
10-05 13:07	40m	-15 / -	HB9ZHK	- / -12	2	✓ Closing fragment
10-05 12:59	40m	-10 / -	OK1JR	-13 / -12	4	✓ Full exchange observed
10-05 12:58	40m	-20 / +2	OK2QA	-16 / -9	8	✓ Full exchange observed
10-05 12:58	40m	- / -	DL7UKM	0 / -	2	Partial capture
10-05 12:57	40m	-16 / 0	DL9KM	-8 / -1	5	✓ Full exchange observed
10-05 12:54	40m	-22 / +7	OE8PIT	-6 / -	4	✓ 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
071715 -10  778  OK4TO DL5XL JO43
071730  +4 2706  OK4TO S57TW +00
071745 -19 1963  R6DOB/M OK4TO R-05
071800  +2 2706  OK4TO S57TW RR73
071845 -19 1963  CQ TOTA OK4TO JN79
071900  -9 1463  OK4TO DJ0MAB JN49
071915 -18 1963  CQ TOTA OK4TO JN79
071945 -14 1963  DL2YBG OK4TO -24
072000 -20 1735  OK4TO DL2YBG R-02
072015 -15 1963  DL2YBG OK4TO RR73
072030 -19 1885  OK4TO DL2YBG 73
072100  +0 2964  OK4TO DJ0MAB JN49
072100 -20 1963  CQ TOTA OK4TO JN79
072130  +3 2964  OK4TO DJ0MAB JN49
072315 -20 1963  G0JEI OK4TO JN79

60m

UTC    dB Audio  Message
072115  -2 1406  F5SOI OK4TO JN79 (x2)
072230  -4 1406  DL6EBC OK4TO JN79 (x2)
072345  -4 1406  CQ TOTA OK4TO JN79 (x2)
072445  -5 1406  ON8LX OK4TO -06
072500 -15 1018  OK4TO ON8LX R-08
072515  +0 1406  ON8LX OK4TO RR73
072530 -13 1018  OK4TO ON8LX 73
072600  -1 1406  CQ TOTA OK4TO JN79 (x3)
072730  -3 1406  F4GUK OK4TO -23 (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

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee