R2UD — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: LO07

Receiver-side FT8 activity involving R2UD, decoded by SO8OO in southeastern Poland. 73 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 5 UTC dates in the available aggregate history. Observed between 2026-08-27 and 2026-09-04.

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 73 FT8 messages attributed to R2UD as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (51%), followed by 80 m (49%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (60%); the estimated median was -5 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-5 dB

Estimated median S/N

Bands

80m · 36 40m · 37

First attributed message: 2026-08-27
Last attributed message: 2026-09-04 18:22 UTC

Observed FT8 message patterns

Attributed sample: 73 messages
Active dates: 5 UTC dates
Estimated median S/N: -5 dB
Estimated 10th-90th percentile: -14 to +11 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 24, strong (≥ -8 dB) 44.

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 R2UD in decoded directed-looking exchanges:

9A3AUH · Croatia ×2 4X1UF · Israel 9A4ZM · Croatia DK8HC · Fed. Rep. of Germany DL7ACA · Fed. Rep. of Germany EI9KF · Ireland PD2WCW · Netherlands R1BDX · European Russia R6DZR · European Russia SP9YGD · Poland UA9CR · Asiatic Russia YT2FA · 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 R2UD

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: LO07 · 24 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,510 km (approx.)
Last such locator decoded: 2026-09-04 18:22 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	R2UD S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-04 18:26	40m	- / -3	RZ6CO	-7 / -	3	Partial capture
09-04 18:15	40m	- / -17	R4PFY	-10 / -	2	Partial capture
09-04 18:15	40m	-9 / -	R1BDX	- / -1	2	✓ Closing fragment
09-04 18:10	40m	-9 / -16	9A4ZM	+10 / -15	8	✓ Full exchange observed
09-04 18:10	40m	- / -12	R6DZR	+4 / -	3	✓ Closing fragment
09-04 18:09	40m	-13 / -7	OZ/KD0NDU	+3 / -10	2	Partial capture
09-03 20:15	80m	+6 / -	RK3DSW	- / -13	2	✓ Closing fragment
09-03 20:13	80m	+9 / -	R5VCW	- / -2	3	✓ Closing fragment
09-03 20:11	80m	+15 / +1	M6XZD	+1 / -11	5	✓ Full exchange observed
09-03 20:10	80m	+14 / -	EA4HPY	- / -10	2	✓ Closing fragment
09-03 20:08	80m	+6 / +2	RL2F	+10 / -12	5	✓ Full exchange observed
09-03 20:03	80m	+6 / -1	RV6ARZ	-1 / -2	9	✓ Full exchange observed
09-03 20:03	80m	+10 / +7	SP100PKP	+24 / -4	4	Partial capture
09-03 20:02	80m	+8 / +5	PA3EVY	+4 / -9	5	✓ Full exchange observed
09-03 19:58	80m	- / -5	R1DM	+7 / -	2	✓ Closing fragment
09-03 19:56	80m	0 / -6	DL5DQZ	0 / -20	4	✓ Full exchange observed
09-03 19:52	80m	+2 / -	R6ML	- / -12	2	✓ Closing fragment
09-03 19:51	80m	+2 / -	DK2CC	0 / -14	6	✓ Closing observed
09-03 19:50	80m	+4 / -	UA4FKT	+12 / -	4	✓ Closing observed
09-03 19:49	80m	+1 / -4	OZ7CL	+7 / -9	4	✓ Full exchange observed
09-01 21:58	40m	-6 / -	DK8HC	- / -16	2	✓ Closing fragment
09-01 21:55	40m	-18 / 0	EI9KF	-14 / -14	6	✓ Full exchange observed
09-01 21:51	40m	-12 / +3	4X1UF	-12 / -7	5	✓ Full exchange observed
09-01 21:47	40m	-9 / -	TF8KW	-9 / -13	3	Partial capture
09-01 21:45	40m	- / -5	DL7ACA	-4 / -	2	✓ Closing fragment
09-01 21:42	40m	- / -	RL7Z	-15 / -	2	Partial capture
09-01 21:37	40m	-11 / -7	PD2WCW	-9 / -11	3	✓ Full exchange observed
09-01 21:34	40m	-11 / -	YT2FA	-8 / -	2	✓ Closing observed
09-01 21:33	40m	-12 / -	SP9YGD	- / -9	2	✓ Closing fragment
09-01 21:31	40m	-11 / -	UA9CR	- / 0	2	✓ Closing fragment
09-01 21:29	40m	-11 / -	9A3AUH	+2 / -25	5	✓ Closing observed
09-01 21:27	40m	-6 / -	VJ6X	- / -	2	Partial capture
08-27 20:29	40m	- / -4	LZ2II	+6 / -	2	Partial capture
08-27 20:29	40m	-10 / -15	HA5UB	+6 / -11	7	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
181130  +8  575  R2UD 9A4ZM JN86
181145  -9  575  9A4ZM R2UD -15 (x2)
181330 +15  572  R2UD 9A4ZM R-16 (x2)
181445  -8  572  9A4ZM R2UD RR73
181500  +1 1237  R2UD RM5F KO85
181515  -9  572  R1BDX R2UD -01
181530 -11 1675  R2UD R4PFY -17
181545  -9  571  R1BDX R2UD RR73
181600 -10 1675  R2UD R4PFY -17
182215 -16 2301  YB2TTM R2UD LO07
182600  -7 1685  R2UD RZ6CO -03 (x3)

80m

UTC    dB Audio  Message
200900 +12 1650  R2UD RL2F RRR
200915  +5 1650  RL2F R2UD 73
201015 +12  725  EA4HPY R2UD R-10 (x2)
201115 +13  629  M6XZD R2UD LO07
201130  +0  629  R2UD M6XZD +01
201145 +14  629  M6XZD R2UD R-11
201200  +2  629  R2UD M6XZD RR73
201215 +17  628  M6XZD R2UD 73
201245 +17  615  PA1UN R2UD LO07
201345 +11 1003  R5VCW R2UD LO07 (x3)
201545  +6 1553  RK3DSW R2UD 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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