UI7N — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KN98

Receiver-side FT8 activity involving UI7N, decoded by SO8OO in southeastern Poland. 534 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 21 UTC dates in the available aggregate history. Observed between 2026-07-18 and 2026-09-13.

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 534 FT8 messages attributed to UI7N as the transmitting token by decoded message structure across 21 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (54%), followed by 40 m (37%) and 10 m (6%). Most decodes (69%) fell within the six-hour window 19:00-01:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8.1 dB.

Overview

534

Messages attributed

UTC dates decoded

Active 15-min windows

-8.1 dB

Estimated median S/N

Bands

80m · 17 40m · 196 20m · 291 10m · 30

First attributed message: 2026-07-18
Last attributed message: 2026-09-13 18:11 UTC

Observed FT8 message patterns

Attributed sample: 534 messages
Active dates: 21 UTC dates
Estimated median S/N: -8.1 dB
Estimated 10th-90th percentile: -18 to +3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 111, moderate (-15 to -9 dB) 153, strong (≥ -8 dB) 270.

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 UI7N in decoded directed-looking exchanges:

EC3A · Spain ×2 VP5G · Turks & Caicos Islands ×2 DK7ZT · Fed. Rep. of Germany ×2 EA1IOK · Spain ×2 EB3JT · Spain ×2 HG8LXL · Hungary ×2 R2AL · European Russia ×2 R9FF · European Russia ×2 RG5A · European Russia ×2 S52D · Slovenia ×2 SV2AEL · Greece ×2 YO4NF · Romania ×2

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 UI7N

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: KN98 · 208 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,257 km (approx.)
Last such locator decoded: 2026-09-13 18:11 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	UI7N S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-13 18:09	40m	+2 / -	4O4DB	- / -	4	Partial capture
09-08 19:40	40m	+12 / -	R1AI	- / -	2	Partial capture
09-02 16:23	40m	- / -	UA4FKT	+2 / -	2	Partial capture
09-02 16:21	40m	-2 / +2	UA4FEN	-9 / 0	5	✓ Full exchange observed
09-02 16:18	40m	+3 / -5	R2GBR	-6 / -1	2	Partial capture
09-02 16:17	40m	-4 / +4	RM5F	-1 / -3	7	✓ Full exchange observed
09-02 16:17	40m	+1 / -8	SP6FME	-8 / -7	6	✓ Full exchange observed
09-02 16:16	40m	+1 / -	RA7Z	- / -10	2	✓ Closing fragment
09-02 16:15	40m	+1 / -6	RC9WC	-6 / +1	3	✓ Full exchange observed
09-02 16:14	40m	-2 / -6	RA6MQ	+1 / +3	4	✓ Full exchange observed
09-02 16:13	40m	-4 / -	R7IW	- / -4	3	✓ Closing fragment
08-31 20:35	20m	-4 / -	KC3WRH	- / -	2	Partial capture
08-31 20:16	20m	- / -16	K1WY	-1 / -	2	✓ Closing fragment
08-28 22:29	40m	+6 / -	UF1A	- / -	2	Partial capture
08-28 22:27	40m	+7 / -15	CN8NS	-9 / -9	4	✓ Full exchange observed
08-28 22:26	40m	+10 / -	VK6BAD	- / -16	2	✓ Closing fragment
08-28 22:22	40m	+5 / -3	UG0B	-14 / -9	8	✓ Full exchange observed
08-28 22:20	40m	+8 / +10	DK7ZT	+2 / -6	4	✓ Full exchange observed
08-28 22:19	40m	+6 / -	JY5IB	- / -12	3	✓ Closing fragment
08-28 21:00	20m	- / +1	EB3JT	+7 / -	3	✓ Closing fragment
08-28 20:59	20m	- / -3	S52D	0 / -	2	✓ Closing fragment
08-28 20:53	20m	- / -	DK7ZT	+2 / -	2	✓ Closing fragment
08-28 20:52	20m	- / -5	KS0CW	-22 / -	2	✓ Closing fragment
08-28 20:44	20m	- / -1	AA3B	+4 / -	3	Partial capture
08-28 16:49	20m	+16 / -	HA9PP	- / +3	2	✓ Closing fragment
08-28 16:45	20m	+17 / -	RA0AN	- / -17	7	Partial capture
08-25 23:14	20m	- / -13	WA5PJA	-15 / -	2	✓ Closing fragment
08-25 23:08	20m	- / -9	VA3DIF	-8 / -	2	✓ Closing fragment
08-25 23:01	20m	- / -4	K2RKJ	+2 / -	3	✓ Closing fragment
08-25 22:55	20m	- / -19	KB2BJD	-13 / -	2	✓ Closing fragment
08-25 22:51	20m	-14 / -	K4TEI	- / -	2	Partial capture
08-25 22:49	20m	- / -24	KC4DPT	-10 / -	2	✓ Closing fragment
08-25 22:43	20m	- / -4	KD2WBX	-9 / -	6	✓ Closing fragment
08-25 22:43	20m	- / -11	V31DL	-5 / -	3	✓ Closing fragment
08-25 22:11	20m	- / -	VE3NVK	-16 / -	5	Partial capture
08-25 21:43	20m	- / -2	TJ1GD	-10 / -	2	✓ Closing fragment
08-11 19:54	20m	- / +2	RU9F	+7 / -	4	✓ Closing fragment
08-11 19:51	20m	- / -2	SV2AEL	-7 / -	5	✓ Closing fragment
08-11 19:48	20m	-8 / -	TT1GD	-9 / -	3	✓ Closing observed
08-11 19:43	40m	-9 / -	JA6VQA	- / -9	2	✓ Closing fragment
08-11 19:41	40m	-9 / -	JR1HFI	- / -13	3	✓ Closing fragment
08-11 19:40	40m	-10 / -	JH1CTV	- / -12	2	✓ Closing fragment
08-11 19:37	40m	-2 / -	YC2BUZ	- / -	2	Partial capture
08-10 19:58	20m	-17 / -	Z34K	- / -	2	Partial capture
08-10 19:57	20m	-13 / -	RU3FM	-13 / -9	3	✓ Closing observed
08-10 19:54	20m	-16 / +3	RA6YDX	-17 / -4	3	✓ Full exchange observed
08-10 19:50	20m	-14 / -	RA0ZIH	- / -12	2	Partial capture
08-10 18:43	20m	- / -	EC7B	-18 / -	2	Partial capture
08-08 21:06	40m	-6 / -	F1IQH	- / -17	2	✓ Closing fragment
08-08 21:04	40m	-4 / -	YC2ULK	- / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
162200 -12 1711  UI7N UA4FEN +01
162200  +1  838  UI7N RM5F 73
162215  +0 1712  UA4FEN UI7N R+00
162230  -8 1711  UI7N UA4FEN RR73
162245  -5 1712  UA4FEN UI7N 73
162300 -12 2571  UI7N UB2FEK KO04
162300  +2 1712  UI7N UA4FKT LO23 (x2)
143145  -3  936  SQ5WBW/P UI7N KN98
194030 +12  689  R1AI UI7N KN98 (x2)
180915  +2 2698  4O4DB UI7N KN98 (x4)

20m

UTC    dB Audio  Message
204430  +3  653  UI7N AA3B -01 (x2)
205200 -24 1963  UI7N KS0CW -05 (x2)
205300  +0 2738  UI7N DK7ZT +11 (x2)
205945  -1 1167  UI7N S52D R-03 (x2)
210015  +4 1038  UI7N EB3JT JN01 (x3)
201645  -2  755  UI7N K1WY -16 (x2)
203530  -4  591  KC3WRH UI7N KN98 (x2)

80m

UTC    dB Audio  Message
203230 -10 2709  RW4M UI7N R-21
203245  +1 2710  UI7N RW4M RR73
203300 -13 2710  RW1C UI7N R-11
203315 +11 2389  UI7N RW1C -11
203330 -13 2710  RW1C UI7N R-11
203345 +11 2389  UI7N RW1C -11
203400 -10 2710  RW1C UI7N R-10 (x2)
203530 -24 2392  CQ UI7N KN98
203545 +10 2391  UI7N RW1C -12
203600 -16 2392  RW1C UI7N R-13
203615  +9 2391  UI7N RW1C RR73
203830  +8  242  UI7N <...> -13
204030  -1 2065  UI7N R6TY -14 (x2)

10m

UTC    dB Audio  Message
201230 -12 2198  HI3A UI7N R-10 (x2)
201330 -10 2198  CA3POR UI7N KN98 (x2)
143900  +2 2830  UI7N 9J2FI -05 (x2)
151445  -8 2677  TJ1GD/P UI7N R-15
151645  -9 2676  PP5GP UI7N R-23 (x2)
093215 -21 1154  RA4NCC UI7N RR73
093545 -19 1154  RK3MXT UI7N KN98 (x2)
093945 -18 1153  YD2UNY UI7N KN98
094745 -19 1154  UA9FFV UI7N -12 (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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