OK1STK — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Czech Republic Most frequent locator attributed to this token: JO60

Receiver-side FT8 activity involving OK1STK, decoded by SO8OO in southeastern Poland. 87 FT8 messages attributed to this token as transmitter, on 40m, 10m, across 2 UTC dates in the available aggregate history. Observed between 2026-08-21 and 2026-09-20.

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 87 FT8 messages attributed to OK1STK as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (56%), followed by 10 m (44%). In this small sample, the estimated median decoder S/N was -6 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-6 dB

Estimated median S/N

Bands

40m · 49 10m · 38

First attributed message: 2026-08-21
Last attributed message: 2026-09-20 13:34 UTC

Observed FT8 message patterns

Attributed sample: 87 messages
Active dates: 2 UTC dates
Estimated median S/N: -6 dB
Estimated 10th-90th percentile: -12 to +1 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 23, strong (≥ -8 dB) 62.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with OK1STK in decoded directed-looking exchanges:

4Z5ML · Israel DO3VS · Fed. Rep. of Germany E75W · Bosnia-Herzegovina EA8UP · Canary Islands F4BJN · France F4FSY · France F8AEJ · France IU4QRO · Italy R3LC · European Russia SH0JPO · Sweden SV1EKI · Greece UA3ZQN · European Russia

Most frequent locator attributed to OK1STK

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: JO60 · 38 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 628 km (approx.)
Last such locator decoded: 2026-09-20 13:34 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	OK1STK S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 13:28	40m	-6 / -	PD1GOL	- / -6	3	✓ Closing fragment
09-20 13:27	40m	-7 / -	SM4YZV	- / -6	7	Partial capture
09-20 13:23	40m	-6 / -	R2EA/P	- / -	3	Partial capture
09-20 13:22	40m	-6 / 0	DG3EAZ	-19 / +8	4	✓ Full exchange observed
09-20 13:22	40m	- / -	PD0IFI	-5 / -	2	Partial capture
09-20 13:17	40m	-8 / -4	9A4ZM	0 / -	6	✓ Full exchange observed
09-20 13:15	40m	-6 / -	LB9ZG	- / -11	3	✓ Closing fragment
09-20 13:14	40m	-9 / -	RA3LJ	- / -	2	Partial capture
09-20 13:12	40m	-4 / -	9A5MP	-19 / -8	4	✓ Closing observed
09-20 13:10	40m	-8 / -	SP9BBA	- / -13	4	✓ Closing fragment
09-20 13:05	40m	-3 / -	RN3TT	- / -	2	Partial capture
09-20 13:04	40m	-6 / +9	DK7ZT	-19 / -	5	✓ Full exchange observed
09-20 13:03	40m	-7 / -	ON1DGN	- / +6	4	✓ Closing fragment
09-20 13:00	40m	-2 / +3	DL4LUS	-22 / -3	3	Partial capture
09-20 12:56	40m	-10 / -3	OE6TNO	-7 / -	13	✓ Full exchange observed
08-22 09:10	10m	- / -	F4BJN	-13 / -	3	✓ Closing fragment
08-22 09:10	10m	- / 0	F4FSY	-9 / -	3	✓ Closing fragment
08-21 17:01	10m	-12 / -	HA7TM	- / -5	2	Partial capture
08-21 16:57	10m	-13 / -	OM3CPV	- / -	2	Partial capture
08-21 16:54	10m	-12 / -	2E0CVN	- / -21	6	Partial capture
08-21 16:51	10m	-2 / -11	4Z5ML	-4 / 0	5	✓ Full exchange observed
08-21 16:32	10m	0 / -	OM3CPV	- / -	3	Partial capture
08-21 16:30	10m	+5 / -	RA2FL	- / -	2	Partial capture
08-21 16:27	10m	+4 / -	PD4DX	- / -	2	Partial capture
08-21 16:26	10m	+2 / -	R2FEA	- / +1	2	Partial capture
08-21 16:24	10m	+7 / -	YL3AVN	- / +9	2	Partial capture
08-21 16:15	10m	-1 / -22	E75W	-15 / -15	8	✓ Full exchange observed
08-21 16:11	10m	-3 / -	YU1JW	- / +4	3	✓ Closing fragment
08-17 17:50	10m	- / +1	SV1EKI	-16 / -	2	✓ Closing fragment
08-07 15:32	10m	- / -24	IU4QRO	-6 / -	3	✓ Closing fragment
07-30 17:52	10m	- / -1	EA8UP	-8 / -	2	✓ Closing fragment
07-25 07:12	10m	- / -	F8AEJ	-18 / -	2	✓ Closing fragment
07-23 18:17	10m	- / -	UA3ZQN	-16 / -	2	✓ Closing fragment
07-23 17:52	10m	- / -8	R3LC	-8 / -	2	✓ Closing fragment
07-23 17:47	10m	- / -3	R3LC	-6 / -	2	Partial capture
07-19 13:16	10m	- / -	PE9JAN	-7 / -	2	Partial capture
07-19 13:02	10m	- / 0	DO3VS	-14 / -	2	✓ Closing fragment
07-17 16:06	20m	- / -22	F4IVG	-14 / -	2	✓ Closing fragment
07-14 20:53	20m	- / -20	EA8UP	+1 / -	7	Partial capture
07-06 05:56	20m	- / -	LZ2VQ	-18 / -	2	Partial capture
07-06 05:51	20m	- / -	LZ3CB	+8 / -	3	Partial capture
07-04 05:09	20m	- / -	UR9QQ	-8 / -	2	Partial capture
07-02 11:09	20m	- / -	EB3JT	-16 / -	3	Partial capture
07-02 11:08	20m	- / -	M8KKH	+4 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
132315  -4 1297  DG3EAZ OK1STK 73
132345  -5 1135  R2EA/P OK1STK JO60 (x3)
132715  -5 2029  SM4YZV OK1STK JO60 (x2)
132815  -5 1899  PD1GOL OK1STK JO60 (x3)
132945  -6 1899  SM4YZV OK1STK R-06 (x5)
133415 -10 1255  R9SAP OK1STK JO60

20m

UTC    dB Audio  Message
055130 +10  785  OK1STK LZ3CB KN32 (x3)
055600 -17 1582  OK1STK LZ2VQ KN23 (x2)
205315  -1 1764  OK1STK EA8UP -20 (x7)
160645 -13 2136  OK1STK F4IVG -22 (x2)
171515  -8 2980  OK1STK OH6IH -20

10m

UTC    dB Audio  Message
165600 -17 2152  2E0CVN OK1STK R-21 (x3)
165730 -14 1260  OM3CPV OK1STK JO60 (x2)
170130 -10 1259  HA7TM OK1STK -05 (x2)
170700 -10  792  SH0JPO OK1STK 73
173400 -19 1140  UW5ESX OK1STK -19
091045 -11 1671  OK1STK F4FSY +00
091045 -13  918  OK1STK F4BJN JN25
091115  -9 1671  OK1STK F4FSY +00
091115 -14  918  OK1STK F4BJN JN25 (x2)
091315  -8 1671  OK1STK F4FSY RR73

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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