OK1UA — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Czech Republic Most frequent locator attributed to this token: JN79

Receiver-side FT8 activity involving OK1UA, decoded by SO8OO in southeastern Poland. 45 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-12.

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 45 FT8 messages attributed to OK1UA as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (38%), followed by 80 m (31%) and 60 m (24%). Several six-hour UTC windows tied for the largest share (62%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -14 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-14 dB

Estimated median S/N

Bands

80m · 14 60m · 11 40m · 17 20m · 3

First attributed message: 2026-06-07
Last attributed message: 2026-09-12 06:48 UTC

Observed FT8 message patterns

Attributed sample: 45 messages
Active dates: 7 UTC dates
Estimated median S/N: -14 dB
Estimated 10th-90th percentile: -20 to +1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 18, moderate (-15 to -9 dB) 15, strong (≥ -8 dB) 12.

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 OK1UA in decoded directed-looking exchanges:

KF0YOB · United States DF7QR · Fed. Rep. of Germany DL7EDU · Fed. Rep. of Germany IU5TPM · Italy PE1NAO · Netherlands SP9LS · Poland SQ9AWN · Poland SQ9PBV · Poland DF0AWG · Fed. Rep. of Germany OT4A · Belgium SP7FID · Poland

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 OK1UA

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 · 29 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 491 km (approx.)
Last such locator decoded: 2026-09-12 06:39 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	OK1UA S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-12 06:47	80m	-6 / -19	SP7FID	+16 / -	3	✓ Closing observed
09-12 06:38	80m	-18 / -	EH3ST	- / -	2	Partial capture
09-12 06:34	80m	-16 / -3	3Z100PKP	+9 / -2	3	Partial capture
09-12 06:05	40m	-13 / -6	LZ936BA	+2 / +1	2	Partial capture
09-12 05:57	40m	-22 / -4	DF7QR	-12 / -	3	✓ Closing observed
09-09 15:50	40m	-16 / -8	SN100PKP	+1 / -14	3	Partial capture
09-05 06:35	60m	- / -10	OT4A	-9 / -	2	✓ Closing fragment
09-05 06:27	60m	- / -19	DF0AWG	-2 / -	2	✓ Closing fragment
09-05 06:24	60m	-18 / -20	F5MYK	-20 / -15	5	Partial capture
09-05 06:21	60m	-9 / -	G3RLX	- / -	2	Partial capture
09-05 06:14	60m	-20 / -16	SN40KZE	-5 / -1	3	Partial capture
09-05 06:06	80m	-6 / -	DL1HDL	- / -	9	Partial capture
09-02 15:09	40m	- / -2	DK8HC	-8 / -	2	Partial capture
08-23 07:15	20m	- / -12	G5MJF	-8 / -	2	Partial capture
08-21 14:04	40m	-14 / -	SP9LS	- / +3	3	✓ Closing fragment
08-21 14:02	40m	-12 / -	HB10GBT	- / -	3	Partial capture
08-21 14:00	40m	-10 / -	DJ0MAB	- / +4	2	Partial capture
08-21 13:59	40m	-18 / -	PE1NAO	-18 / -13	3	✓ Closing observed
08-08 06:12	20m	- / -	KF0YOB	-12 / -	2	✓ Closing fragment
08-08 06:08	20m	- / +1	KF0YOB	-16 / -	3	Partial capture
07-22 12:47	40m	- / -2	DL7EDU	-18 / -	2	✓ Closing fragment
07-19 12:52	40m	- / -1	SQ9PBV	+6 / -	2	✓ Closing fragment
07-19 12:46	20m	+13 / -	HI8ML	- / -	3	Partial capture
07-19 12:43	40m	- / +6	SQ9AWN	-20 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
060700 -14 1003  DL1HDL OK1UA JN79 (x7)
063415 -17 1394  3Z100PKP OK1UA JN79
063430  +9 1393  OK1UA 3Z100PKP -03
063445 -15 1394  3Z100PKP OK1UA R-02
063845 -18 1600  EH3ST OK1UA JN79 (x2)
064730 +15  423  OK1UA SP7FID -19 (x2)
064815  -6  422  SP7FID OK1UA 73

60m

UTC    dB Audio  Message
061430  -5 1985  OK1UA SN40KZE -16
061445 -21 1985  SN40KZE OK1UA R-01
062145  -7  531  G3RLX OK1UA JN79 (x2)
062400 -20 2288  OK1UA F5MYK -20
062415 -18 2289  F5MYK OK1UA R-15 (x4)
062730  -1  375  OK1UA DF0AWG -19 (x2)
063530  -8 2081  OK1UA OT4A -10 (x2)
064545 -21 2131  HB9ACA OK1UA R-09
063015 -24 1935  PA5KK OK1UA JN79

40m

UTC    dB Audio  Message
140415 -17 2069  SP9LS OK1UA JN79 (x3)
150930  -7  597  OK1UA DK8HC JO42 (x2)
151130 -19 1394  OK1UA IU5TPM 73
060300 +17 2857  OK1UA S57TW -11
155045 -20 1180  SN100PKP OK1UA JN79
155100  +1 1180  OK1UA SN100PKP -08
155115 -11 1180  SN100PKP OK1UA R-14
055745 -12 1312  OK1UA DF7QR -04 (x2)
055830 -22 1312  DF7QR OK1UA 73
060530  +2 2409  OK1UA LZ936BA -06
060545 -13 2409  LZ936BA OK1UA R+01

20m

UTC    dB Audio  Message
124645 +12 2882  HI8ML OK1UA JN79 (x3)
060830 -17 1573  OK1UA KF0YOB +01 (x5)
071515 -13 2079  OK1UA G5MJF -12 (x2)
072300  +2 2608  OK1UA IU5TPM JN53

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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