UD8F — 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: European Russia Most frequent locator attributed to this token: LO88

Receiver-side FT8 activity involving UD8F, decoded by SO8OO in southeastern Poland. 105 FT8 messages attributed to this token as transmitter, on 40m, across 12 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-09-23.

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 105 FT8 messages attributed to UD8F as the transmitting token by decoded message structure across 12 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). Several six-hour UTC windows tied for the largest share (67%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's moderate S/N range (78%); the estimated median was -11 dB.

Overview

105

Messages attributed

UTC dates decoded

Active 15-min windows

-11 dB

Estimated median S/N

Bands

40m · 105

First attributed message: 2026-06-11
Last attributed message: 2026-09-23 16:11 UTC

Observed FT8 message patterns

Attributed sample: 105 messages
Active dates: 12 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -14 to -8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 82, strong (≥ -8 dB) 16.

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 UD8F in decoded directed-looking exchanges:

DG0OFT · Fed. Rep. of Germany DJ0MAB · Fed. Rep. of Germany DL7ACA · Fed. Rep. of Germany JF8EVE · Japan LA2GCA · Norway M7LBT · England R2GBR · European Russia R3PJ · European Russia R3PY · European Russia R3QX · European Russia R3WDW · European Russia R6ML · European Russia

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 UD8F

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: LO88 · 48 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,444 km (approx.)
Last such locator decoded: 2026-09-16 16:12 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	UD8F S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 14:04	40m	- / -7	R2GBR	-9 / -	2	✓ Closing fragment
09-20 14:00	40m	- / -	RZ4FWA	-19 / -	3	Partial capture
09-16 16:12	40m	-14 / -11	LA2GCA	-13 / -23	7	✓ Full exchange observed
09-16 15:52	40m	-13 / -	RA0WBI	- / -17	3	Partial capture
09-16 15:41	40m	-8 / -8	R3QX	+1 / -	3	✓ Closing observed
09-16 15:39	40m	- / -2	RA3M	-4 / -	2	✓ Closing fragment
09-16 14:56	40m	- / -1	R3PJ	-6 / -	2	✓ Closing fragment
09-16 14:54	40m	- / -4	RK3DJW	-2 / -	2	✓ Closing fragment
09-16 14:51	40m	- / -	R4UA	-10 / -	2	Partial capture
09-16 14:50	40m	- / -8	RC6OX	-11 / -	3	Partial capture
09-16 14:41	40m	-12 / -	RW9YO	- / -20	2	✓ Closing fragment
09-14 14:15	40m	- / 0	R6ZL	-20 / -	2	Partial capture
09-10 16:54	40m	- / +1	UA3PTY	0 / -	2	✓ Closing fragment
09-01 16:42	40m	- / 0	UC6D	+9 / -	3	✓ Closing fragment
09-01 16:34	40m	-9 / -	JF8EVE	- / -13	4	✓ Closing fragment
09-01 16:31	40m	-11 / -	RY2A	- / -	2	Partial capture
08-31 17:04	40m	-14 / -	R9MDA	- / -3	3	Partial capture
08-31 17:00	40m	-13 / +4	R9FDM	-22 / -	2	Partial capture
08-31 16:56	40m	-10 / -11	UA3DNK	-4 / -	3	✓ Closing observed
08-31 16:54	40m	- / +1	R3PY	-6 / -	2	✓ Closing fragment
08-31 16:38	40m	- / +5	R1TET	-11 / -	3	Partial capture
08-31 15:51	40m	- / -18	UA6LIK	-7 / -	4	✓ Closing fragment
08-29 17:21	40m	- / 0	DL7ACA	0 / -	4	✓ Closing fragment
08-29 17:20	40m	- / -13	DG0OFT	0 / -	3	✓ Closing fragment
08-29 17:16	40m	-10 / -16	M7LBT	-20 / -17	6	✓ Full exchange observed
08-29 17:06	40m	- / -8	R6OIZ	-2 / -	2	✓ Closing fragment
08-29 16:55	40m	-8 / -	R2DRY	- / -16	2	Partial capture
08-29 16:51	40m	-5 / -	R0ADN	- / -	3	Partial capture
08-29 16:47	40m	-9 / -14	S56KO	-1 / -21	6	✓ Full exchange observed
08-22 17:13	40m	-14 / -	<...>	- / -12	3	Partial capture
08-22 16:59	40m	-12 / -7	DJ0MAB	-12 / -21	5	✓ Full exchange observed
08-22 16:58	40m	-16 / -	UF4S/P	- / -11	2	Partial capture
08-22 16:53	40m	-12 / -	R0SBH	- / -	4	Partial capture
08-22 16:51	40m	- / +3	UF1A	-5 / -	2	✓ Closing fragment
08-22 16:50	40m	- / -	RG5A	+8 / -	2	Partial capture
08-22 16:50	40m	- / -	UA3DPM	-8 / -	12	Partial capture
08-22 16:45	40m	-12 / -	RK4HS	-17 / -3	3	✓ Closing observed
08-22 16:42	40m	- / -	UA3DPM	-4 / -	3	Partial capture
08-22 16:40	40m	-14 / -5	UF4S/P	-12 / +3	5	✓ Full exchange observed
07-25 17:22	40m	- / +5	R6ML	-8 / -	3	✓ Closing fragment
07-25 17:22	40m	- / 0	R7OF	-7 / -	4	✓ Closing fragment
07-25 17:20	40m	- / -6	UB6OAJ	-14 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
155300 -14  623  RA0WBI UD8F R-12
161200 -16  623  LA2GCA UD8F LO88 (x2)
161245 -15  804  UD8F LA2GCA -11
161300 -12  622  LA2GCA UD8F R-23
161315 -11  805  UD8F LA2GCA RR73
161330 -13  622  LA2GCA UD8F R-23
161345 -14  804  UD8F LA2GCA RR73
135945 -13 1195  UD8F RN3TT RR73
140045 -20 2027  UD8F RZ4FWA LO23 (x3)
140445  -9 1275  UD8F R2GBR -07 (x2)
161130 -13  647  RU9AD UD8F R-05

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

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