UB8FDN — 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: LO76

Receiver-side FT8 activity involving UB8FDN, decoded by SO8OO in southeastern Poland. 188 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 23 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-10-22.

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 188 FT8 messages attributed to UB8FDN as the transmitting token by decoded message structure across 23 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (90%), followed by 40 m (7%) and 20 m (3%). Most decodes (95%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

188

Messages attributed

UTC dates decoded

Active 15-min windows

-11 dB

Estimated median S/N

Bands

80m · 169 40m · 13 20m · 6

First attributed message: 2026-06-11
Last attributed message: 2026-10-22 18:52 UTC

Observed FT8 message patterns

Attributed sample: 188 messages
Active dates: 23 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -22 to -3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 48, moderate (-15 to -9 dB) 71, strong (≥ -8 dB) 69.

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 UB8FDN in decoded directed-looking exchanges:

OH5KNL · Finland ×2 RT2P · European Russia ×2 RW6MD · European Russia ×2 A92AE · Bahrain DC6UW · Fed. Rep. of Germany DK3UA · Fed. Rep. of Germany IK0HBN · Italy LY1G · Lithuania R2DRE · European Russia R4LBP · European Russia R5RC · European Russia R7AW · 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 UB8FDN

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: LO76 · 33 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,302 km (approx.)
Last such locator decoded: 2026-10-22 18:43 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	UB8FDN S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-22 18:59	80m	- / -	RN3YN	-6 / -	2	Partial capture
10-22 18:48	80m	- / -	UA3LKM	-18 / -	2	Partial capture
10-22 18:46	80m	- / -13	RM1O	+8 / -	4	✓ Closing fragment
10-22 18:43	80m	-13 / -3	SP5ALV	+7 / -	7	✓ Closing observed
10-22 18:40	80m	-12 / -18	DJ7M	+18 / -10	12	Partial capture
10-22 18:28	160m	- / -17	LY1G	+14 / -	2	✓ Closing fragment
10-22 18:15	160m	- / -21	DC6UW	0 / -	5	✓ Closing fragment
10-22 04:42	40m	-14 / -	RL3QGD	-9 / -7	5	✓ Full exchange observed
10-22 04:37	40m	-16 / -6	TA2VUZ	-16 / -22	4	✓ Full exchange observed
10-21 16:20	80m	-3 / -	RZ0SW	- / -17	3	✓ Closing fragment
10-21 16:16	80m	-6 / 0	RK6MC	+7 / -5	3	✓ Full exchange observed
10-21 16:14	80m	- / -13	RA2FU	-14 / -	4	Partial capture
10-21 16:14	80m	-8 / -6	YL2GJX	+1 / -17	6	✓ Full exchange observed
10-21 16:12	80m	-9 / -	UN0GY	- / -13	3	Partial capture
10-21 16:09	160m	- / +8	R7AW	-14 / -	2	✓ Closing fragment
10-21 15:21	160m	- / -19	RU3ACA	-24 / -	2	Partial capture
10-06 04:26	40m	- / -5	UA3SAO	-6 / -	2	✓ Closing fragment
10-06 04:15	40m	-13 / -	OA4ENG	- / -19	2	✓ Closing fragment
10-06 04:10	40m	- / -	RN6HK	-5 / -	3	Partial capture
10-03 17:21	160m	- / 0	RZ6CO	-16 / -	2	✓ Closing fragment
10-03 17:01	160m	- / -11	RA1QEA	-14 / -	2	✓ Closing fragment
10-03 16:56	160m	- / -22	R5RC	-5 / -	6	✓ Closing fragment
10-03 16:53	160m	- / -16	R3ZG	-13 / -	3	Partial capture
10-03 16:50	160m	- / -19	UA1AEL	-10 / -	2	✓ Closing fragment
09-29 05:01	40m	- / -12	5P1KZX	-9 / -	2	✓ Closing fragment
09-29 04:49	40m	- / -14	9A5CW	+7 / -	5	✓ Closing fragment
09-29 04:41	40m	- / -18	RD3FY	-8 / -	2	✓ Closing fragment
09-27 17:42	80m	- / 0	RV3X	+12 / -	2	✓ Closing fragment
09-27 17:36	80m	-7 / -	RA3TK	- / -14	2	✓ Closing fragment
09-27 17:17	160m	- / +1	SM3JGG	+1 / -	3	✓ Closing fragment
09-27 17:08	160m	- / -13	UI4I	-3 / -	2	✓ Closing fragment
09-27 17:07	160m	- / -9	RA3VX	-13 / -	8	✓ Closing fragment
09-27 17:06	160m	- / -	RN3RFZ	-20 / -	2	Partial capture
09-27 17:00	160m	- / -	RW4HD	-11 / -	4	Partial capture
09-27 16:58	160m	- / -20	DK3UA	-1 / -	5	✓ Closing fragment
09-27 16:56	160m	- / -19	R2DRE	-16 / -	2	✓ Closing fragment
09-16 17:48	80m	-22 / -	R4SCB	- / -7	2	✓ Closing fragment
09-16 17:44	80m	-10 / -	SQ8N	- / -	2	Partial capture
09-16 17:39	80m	- / -8	UA3ZQN	+10 / -	2	✓ Closing fragment
09-16 17:31	80m	- / +4	RD9D	-2 / -	2	✓ Closing fragment
09-16 16:17	80m	-14 / -	RA0WBI	- / -23	2	Partial capture
09-16 16:02	80m	- / -9	RU3AMO	-16 / -	2	✓ Closing fragment
09-16 16:00	80m	- / -	RA6WF	-10 / -	3	Partial capture
09-16 15:49	80m	- / -15	RX6LG	-8 / -	2	✓ Closing fragment
09-15 16:55	160m	- / -16	RA9YTI	-22 / -	2	✓ Closing fragment
09-15 16:53	160m	- / -12	RC9F	-12 / -	2	✓ Closing fragment
09-13 08:35	10m	- / -11	A92AE	-12 / -	2	✓ Closing fragment
09-12 05:44	40m	- / -16	UI6O	-10 / -	2	Partial capture
09-10 18:00	80m	-12 / -9	OM1II	+8 / -14	5	✓ Full exchange observed
09-10 17:55	80m	- / -19	OK1MOW	+2 / -	4	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
184415 +18  402  UB8FDN DJ7M -18
184445 +10 1370  UB8FDN SP5ALV KO02 (x3)
184600 -13 1100  SP5ALV UB8FDN RR73
184615  +5 1370  UB8FDN SP5ALV 73
184615  +3 2792  UB8FDN RM1O LP31 (x3)
184815 -18 1777  UB8FDN UA3LKM KO65
184815 +12 2792  UB8FDN RM1O 73
184915 -19 1777  UB8FDN UA3LKM KO65
185230 -12 1101  UB6HQQ UB8FDN 73
185930  -7  766  UB8FDN RN3YN KO73 (x2)

160m

UTC    dB Audio  Message
172145 -14 1252  UB8FDN RZ6CO R+00 (x2)
152145 -24 1664  UB8FDN RU3ACA -19 (x2)
153300 -20 1321  UB8FDN RT2P RR73
160915 -17 1189  UB8FDN R7AW +08 (x2)
180830 -17 1256  UB8FDN R4LBP RR73
181545  -2  902  UB8FDN DC6UW JO44 (x5)
182800 +14 2175  UB8FDN LY1G -17 (x2)

40m

UTC    dB Audio  Message
041515 -13  592  OA4ENG UB8FDN R-19 (x2)
042630  -8 1900  UB8FDN UA3SAO -05 (x2)
043230 -14  592  UB8COS UB8FDN LO76
043645 -13 1545  UB8FDN UA3POG 73
043745 -20 1492  UB8FDN TA2VUZ -06 (x2)
043830 -16 1492  TA2VUZ UB8FDN R-22
043845 -11 1492  UB8FDN TA2VUZ RR73
044245 -14 2185  UB8FDN RL3QGD KO91
044300 -15 2185  RL3QGD UB8FDN -07
044315  -8 2185  UB8FDN RL3QGD R+14
044330 -14 2185  RL3QGD UB8FDN RR73
044345  -6 2185  UB8FDN RL3QGD 73

60m

UTC    dB Audio  Message
190115  +8 2821  UB8FDN F5LRU JN19

10m

UTC    dB Audio  Message
184730  -7  681  UB8FDN SV2CLJ R-12 (x4)
074400 -12  819  UB8FDN IT9VCE R-15
083545 -11 2619  UB8FDN A92AE -11 (x2)

20m

UTC    dB Audio  Message
155815 -17  865  EP2AES UB8FDN RR73
172830 -11 2026  UB8FDN R7DX KN84 (x3)
190530 -13  616  PY7XC UB8FDN -17
190645 -10 1189  UB8FDN PY7XC 73
191915  +4  615  UB8FDN F4ACR IN96 (x4)

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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