UD8D — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Asiatic Russia Most frequent locator attributed to this token: MO07

Receiver-side FT8 activity involving UD8D, decoded by SO8OO in southeastern Poland. 289 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 13 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-07-17.

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 289 FT8 messages attributed to UD8D as the transmitting token by decoded message structure across 13 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (50%), followed by 40 m (43%) and 80 m (7%). Most decodes (87%) 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

289

Messages attributed

UTC dates decoded

Active 15-min windows

-11 dB

Estimated median S/N

Bands

80m · 20 40m · 123 20m · 145 10m · 1

First attributed message: 2026-06-12
Last attributed message: 2026-07-17 18:06 UTC

Observed FT8 message patterns

Attributed sample: 289 messages
Active dates: 13 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -22 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 81, moderate (-15 to -9 dB) 107, strong (≥ -8 dB) 101.

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 UD8D in decoded directed-looking exchanges:

R1BNG/P · European Russia ×2 R2EA/P · European Russia ×2 BG4OOO · China ×2 R4KR/P · European Russia ×2 RA6ZA · European Russia ×2 UE6DR · European Russia ×2 I0KJX · Italy ×2 F4HSB · France DL3JHK · Fed. Rep. of Germany R6BU · European Russia UE7DR · European Russia YT1UBN · Serbia

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 UD8D

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: MO07 · 105 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,670 km (approx.)
Last such locator decoded: 2026-07-11 20:40 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	UD8D S/N	Counterpart	Counterpart S/N	Msgs	Capture
07-17 17:54	10m	- / -	IK4LZH	-6 / -	2	Partial capture
07-13 14:38	10m	- / -17	PA0KJK	-16 / -	4	Partial capture
07-13 13:56	10m	- / -15	DH9JB	-13 / -	4	✓ Closing fragment
07-11 20:41	40m	-21 / +7	R7CD	-6 / -	4	✓ Closing observed
07-11 20:34	40m	- / -	DL3JHK	-18 / -	2	✓ Closing fragment
07-11 20:24	40m	- / -	LZ3TA	-17 / -	2	✓ Closing fragment
07-11 20:17	40m	- / -19	OE7LVI	-8 / -	3	✓ Closing fragment
07-11 20:13	40m	- / -10	G6LEE	-19 / -	4	✓ Closing fragment
07-11 20:13	40m	- / -7	RC6O	-7 / -	5	Partial capture
07-11 20:08	40m	- / -9	RA3ZOM	-16 / -	3	✓ Closing fragment
07-11 19:58	40m	-22 / -	OH4JFN	- / +1	2	✓ Closing fragment
07-11 19:51	40m	- / -	IK0HBN	-10 / -	22	Partial capture
07-11 19:47	40m	- / -	IK0HBN	-8 / -	2	Partial capture
07-11 19:42	40m	- / -7	G6LEE	-18 / -	2	Partial capture
07-11 19:28	40m	- / -	9A3TGT	-14 / -	2	Partial capture
07-11 19:12	20m	- / -11	DB8JV	-18 / -	2	Partial capture
07-11 19:01	20m	-17 / -	IW2HWN	-15 / -	2	✓ Closing observed
07-11 19:01	20m	-14 / -	M8GGQ	-12 / -8	6	✓ Full exchange observed
07-11 18:58	20m	-14 / -	GM4AUP	- / -13	2	✓ Closing fragment
07-11 18:56	20m	-4 / -	UA6XHN	- / -13	3	✓ Closing fragment
07-11 18:54	20m	-7 / -	DL4VAC	- / -12	2	Partial capture
07-11 18:48	20m	-8 / -	I0KJX	- / -15	4	✓ Closing fragment
07-11 18:46	20m	0 / -	EA7J	- / -16	2	✓ Closing fragment
07-11 18:41	20m	-1 / -	F6BHK	- / -10	4	✓ Closing fragment
07-11 18:38	20m	-3 / -	G0TIX	-12 / -	4	✓ Closing observed
07-11 18:34	20m	-5 / -	EW1MN	- / -3	2	✓ Closing fragment
07-11 18:30	20m	-9 / -	SV1MOZ	- / -14	6	✓ Closing fragment
07-11 18:28	20m	-6 / -	CT2JJT	- / -16	3	✓ Closing fragment
07-11 18:27	20m	-10 / -	SA0WAE	- / -18	2	✓ Closing fragment
07-11 18:27	20m	- / -	RA6OY	-10 / -	4	Partial capture
07-11 10:15	20m	-10 / -	<...>	- / 0	2	Partial capture
07-11 10:07	20m	-7 / -	UB3ADO/P	- / -14	4	✓ Closing fragment
07-11 10:00	20m	-10 / -	R1BRY/P	- / -7	6	✓ Closing fragment
07-08 12:23	10m	- / -	OE5RI	+2 / -	2	Partial capture
07-07 19:12	10m	- / -19	G4RDC	-20 / -	2	Partial capture
06-30 17:41	40m	-10 / -	RV9UIN/P	- / -3	3	✓ Closing fragment
06-29 18:52	20m	- / -	M1GYY	-18 / -	2	✓ Closing fragment
06-29 18:46	20m	-16 / -	EB3DJL	-24 / -16	2	Partial capture
06-29 18:45	20m	- / +8	YT1UBN	-7 / -	2	✓ Closing fragment
06-29 18:40	20m	-18 / -	EA4AKS	- / -14	2	✓ Closing fragment
06-29 18:39	20m	-14 / -	R3EDI	-21 / -	2	✓ Closing observed
06-29 18:37	20m	-12 / -	BG4OOO	- / -17	2	✓ Closing fragment
06-29 18:35	20m	-8 / +6	S59A	0 / -2	5	✓ Full exchange observed
06-29 18:35	20m	-9 / -11	DL1R	-3 / -4	5	✓ Full exchange observed
06-29 08:23	10m	- / -6	F4FSY	-2 / -	2	✓ Closing fragment
06-29 07:31	10m	- / -15	IK6HRA	-16 / -	2	Partial capture
06-29 04:31	10m	- / -1	RA3ZGT	-12 / -	3	✓ Closing fragment
06-28 18:03	10m	- / -10	RW3QW	+8 / -	2	✓ Closing fragment
06-28 06:13	10m	- / -	R6LKG	-9 / -	3	Partial capture
06-28 05:58	10m	- / -1	RM3ZX	-9 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

10m

UTC    dB Audio  Message
115845 -14 1778  UD8D IK1UGX JN34
120345 -24 1778  UD8D RA3LJ -08
122345  -1 1924  UD8D OE5RI JN78 (x2)
135645 -10 1453  UD8D DH9JB JO31 (x4)
143845 -16 1438  UD8D PA0KJK JO22 (x4)
175445  -6  438  UD8D IK4LZH JN54 (x2)
180600 -24 1666  R6BU UD8D RR73

40m

UTC    dB Audio  Message
201630 -10  776  UD8D RC6O -02
201730  -7 1539  UD8D OE7LVI JN57 (x3)
202430 -16 2195  UD8D LZ3TA KN21 (x2)
202845 -20 1541  YT2FA UD8D -06
203430 -18 1540  UD8D DL3JHK JO62
203430  -7  284  UD8D RC6O -09
203530 -19 1541  UD8D DL3JHK 73
204045 -23 1540  CQ UD8D MO07                          a1
204100  +3 1938  UD8D R7CD KN94 (x2)
204145 -21 1540  R7CD UD8D RR73
204200 -10 1938  UD8D R7CD 73

20m

UTC    dB Audio  Message
190115 -14 1246  CQ UD8D MO07
190130  -7 2475  UD8D M8GGQ IO94
190130 -15 1244  UD8D IW2HWN JN45
190215 -17 1245  IW2HWN UD8D RR73
190230 -12 2232  UD8D M8GGQ IO94
190245 -11 1245  M8GGQ UD8D -08
190300 -15 2232  UD8D M8GGQ R+16
190315 -18 1245  M8GGQ UD8D RR73
190330 -12 2232  UD8D M8GGQ 73
190345 -14 1245  CQ UD8D MO07 (x2)
190445 -15 1245  G7RZA UD8D -16
191230 -19 1245  UD8D DB8JV JO31 (x2)
192330 -21 1245  UD8D 2E0WWG IO70

80m

UTC    dB Audio  Message
202245 -21 1185  UD8D R4KR/P R+03
202300  +2 1113  R4KR/P UD8D RR73
202315 -15 1228  UD8D M1WLK IO82 (x3)
202445  +6 1113  UD8D SP2LLP JO94 (x3)
190400  +5  999  R2EA/P UD8D -16
190415  -3 1482  UD8D R2EA/P R-09
190430  +6  999  R2EA/P UD8D RR73
190845 +10 2604  R1BNG/P UD8D -13
190900 -18 2246  UD8D R1BNG/P R-05
190915  +8 2603  R1BNG/P UD8D RR73
190930 -17 2246  UD8D R1BNG/P 73

160m

UTC    dB Audio  Message
195345 -24 1378  UD8D R8LCX R-18 (x2)
190045 -12 1508  UD8D UA3ECJ R-13 (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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