OK1ACE — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Czech Republic Most frequent locator attributed to this token: JN78

Receiver-side FT8 activity involving OK1ACE, decoded by SO8OO in southeastern Poland. 2,681 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 59 UTC dates in the available aggregate history. Observed between 2026-06-07 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 2,681 FT8 messages attributed to OK1ACE as the transmitting token by decoded message structure across 59 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (69%), followed by 20 m (21%) and 80 m (10%). The busiest six-hour window was 04:00-10:00 UTC, containing 42% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (74%); the estimated median was -2 dB.

Overview

2,681

Messages attributed

UTC dates decoded

428

Active 15-min windows

-2 dB

Estimated median S/N

Bands

80m · 274 40m · 1,843 20m · 550 10m · 14

First attributed message: 2026-06-07
Last attributed message: 2026-09-20 11:37 UTC

Observed FT8 message patterns

Attributed sample: 2,681 messages
Active dates: 59 UTC dates
Estimated median S/N: -2 dB
Estimated 10th-90th percentile: -14 to +8.2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 201, moderate (-15 to -9 dB) 493, strong (≥ -8 dB) 1,987.

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 OK1ACE in decoded directed-looking exchanges:

CR2WWA · Azores ×9 GB2WWA · England ×9 TM2WWA · France ×8 II6WWA · Italy ×7 II8WWA · Italy ×6 IR0WWA · Italy ×6 II7WWA · Italy ×5 DA0WWA · Fed. Rep. of Germany ×5 II2WWA · Italy ×5 II0WWA · Italy ×4 II5WWA · Italy ×4 II9WWA · Sicily ×4

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 OK1ACE

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: JN78 · 1,638 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 518 km (approx.)
Last such locator decoded: 2026-09-20 11:37 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	OK1ACE S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 11:26	40m	+9 / -	SN100PKP	- / -	21	Partial capture
09-20 10:12	40m	0 / -	SN100PKP	- / -4	4	Partial capture
09-20 10:09	40m	- / -	DM6MK	+10 / -	20	Partial capture
09-20 10:08	40m	-6 / -	DB26YLBB	- / -11	5	Partial capture
09-20 09:19	40m	+10 / -	3Z100PKP	- / -	4	Partial capture
09-20 09:03	40m	0 / +9	SO100PKP	-12 / -	3	Partial capture
09-20 09:02	40m	- / -	UT4PA	+8 / -	11	Partial capture
09-19 17:42	40m	+5 / -	II9IAGM	- / -	7	Partial capture
09-19 16:54	80m	- / -	ES6DO	-7 / -	6	Partial capture
09-19 16:51	80m	+4 / -	EH3ST	-24 / -18	4	✓ Closing observed
09-19 16:46	80m	-4 / -	EH3ST	- / -	2	Partial capture
09-19 16:13	80m	-2 / -5	II9IAGM	-11 / -8	4	Partial capture
09-19 16:12	80m	-7 / +5	SN100PKP	+1 / -	3	Partial capture
09-19 15:59	40m	+5 / -	II9IAGM	- / -	7	Partial capture
09-19 15:54	40m	+9 / -	II6IGTO	- / -8	8	Partial capture
09-19 15:52	40m	+13 / +4	II0IHMG	-5 / +2	3	Partial capture
09-19 15:42	40m	+7 / -	II9IAGM	- / -	14	Partial capture
09-19 15:22	40m	+5 / -	II9IAGM	- / -12	9	Partial capture
09-19 15:19	40m	+5 / -	3Z100PKP	- / -	4	Partial capture
09-19 15:16	40m	+7 / +7	SN100PKP	-2 / -	3	Partial capture
09-19 08:35	40m	- / -	UT0IN	-2 / -	3	Partial capture
09-19 08:33	40m	+5 / -	II8IHBC	- / -5	4	Partial capture
09-19 08:28	40m	+3 / -	IR0IADU	- / -17	6	Partial capture
09-18 11:32	40m	+6 / +3	3Z100PKP	-12 / +7	2	Partial capture
09-18 09:56	40m	+2 / -	SN100PKP	+7 / +9	2	Partial capture
09-18 09:28	40m	+5 / -	II9IAGM	- / -	7	Partial capture
09-18 09:01	40m	+4 / -	3Z100PKP	-11 / +8	3	Partial capture
09-18 08:44	40m	+3 / -	II7IAME	- / -14	4	Partial capture
09-18 08:38	40m	+5 / -	II8IHBC	- / -	5	Partial capture
09-18 08:28	40m	+6 / -	II8IHBC	- / -4	8	Partial capture
09-18 08:05	40m	+5 / -	II8IHBC	- / -4	7	Partial capture
09-18 08:04	40m	+5 / -	SO100PKP	-15 / -	3	Partial capture
09-16 14:32	40m	+2 / +7	SQ100PKP	-10 / -	3	Partial capture
09-16 13:38	40m	+6 / +9	HF100PKP	-3 / +10	3	Partial capture
09-16 10:41	40m	+1 / +2	II6IGTO	-19 / +7	6	Partial capture
09-16 10:15	40m	+3 / -	II8IHBC	- / -10	3	Partial capture
09-16 08:27	40m	+1 / -16	II7IABB	-16 / -11	2	Partial capture
09-16 07:23	40m	-4 / -	II9IAGM	- / -	2	Partial capture
09-16 07:21	40m	+2 / -8	II6IGTO	-16 / -	4	Partial capture
09-16 06:46	40m	+12 / -6	II7IAME	0 / +4	5	Partial capture
09-16 06:42	40m	- / -	PD1SCO	-5 / -	2	Partial capture
09-16 06:41	40m	+6 / -2	II0IHMG	-17 / -7	3	Partial capture
09-16 06:40	40m	+8 / -	EH3ST	- / -8	3	✓ Closing fragment
09-16 06:39	40m	0 / -	II7IABB	- / -	2	Partial capture
09-14 21:55	80m	- / -	SP2TQQ	+1 / -	3	Partial capture
09-14 21:54	80m	+4 / +8	UA4FKT	+16 / -	4	✓ Full exchange observed
09-14 21:53	80m	- / -	R4FDK	-2 / -	7	Partial capture
09-14 21:52	80m	+10 / -	DO5OT	+19 / -	6	✓ Full exchange observed
09-14 21:52	80m	- / 0	F1PBZ	0 / -	8	Partial capture
09-14 21:52	80m	- / -	OH6NIO	+3 / -	24	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
112945  +2  717  SN100PKP OK1ACE JN78 (x15)

80m

UTC    dB Audio  Message
164645  -2 1450  EH3ST OK1ACE JN78 (x5)
165300 -24 1450  OK1ACE EH3ST RR73
165400 -24 2161  OK1ACE IU5KWL -10
165400  -4 1102  OK1ACE ES6DO KO27 (x6)
174900 +14 1898  OK1ACE 3Z100PKP +06
174930 +15 1898  OK1ACE RR73; E70SZ <...> -18

20m

UTC    dB Audio  Message
105715  -5 2103  II7MGBT OK1ACE JN78
124715  -4 2103  <...> OK1ACE JN78 (x5)
125045  +4 1092  II7MGXX OK1ACE JN78 (x2)
125130  -2 1092  OK1ACE II7MGXX -02 (x2)
125215  +1 1092  II7MGXX OK1ACE JN78
125230  +0 1092  OK1ACE II7MGXX -02
125245  +2 1092  II7MGXX OK1ACE R-16 (x3)

10m

UTC    dB Audio  Message
093445 -13 1751  IQ9USG OK1ACE R-16 (x2)
093700 -21 1750  OK1ACE IQ9USG RR73
095930  -8  282  OK1ACE IR7RMAT -08
102200 -11 1310  OK1ACE IR0RCAG -03 (x2)
104115 -12  917  OK1ACE IQ9USG +14 (x2)
150545 -15 1567  OK1ACE DN9TB JO41
152445  +1  757  OK1ACE IQ8PC -02
105930  -9 1720  OK1ACE II2WWA +09
110100  +3  585  OK1ACE II7WWA -03 (x2)
110600  +1  657  OK1ACE SX0W KN10 (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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