UB7K — 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: KN85

Receiver-side FT8 activity involving UB7K, decoded by SO8OO in southeastern Poland. 1,128 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 42 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-17.

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 1,128 FT8 messages attributed to UB7K as the transmitting token by decoded message structure across 42 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (38%), followed by 40 m (25%) and 10 m (20%). Most decodes (76%) fell within the six-hour window 15:00-21:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (86%); the estimated median was +0.9 dB.

Overview

1,128

Messages attributed

UTC dates decoded

133

Active 15-min windows

+0.9 dB

Estimated median S/N

Bands

160m · 424 80m · 179 40m · 278 20m · 24 10m · 223

First attributed message: 2026-06-06
Last attributed message: 2026-10-17 21:42 UTC

Observed FT8 message patterns

Attributed sample: 1,128 messages
Active dates: 42 UTC dates
Estimated median S/N: +0.9 dB
Estimated 10th-90th percentile: -10 to +11 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 22, moderate (-15 to -9 dB) 140, strong (≥ -8 dB) 966.

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 UB7K in decoded directed-looking exchanges:

R9CS/P · Asiatic Russia ×4 R50RKZ · European Russia ×2 R6AO · European Russia ×2 RJ3T · European Russia ×2 UA4QK · European Russia ×2 BA7IWL · China ×2 HA7TM · Hungary ×2 R6OM · European Russia ×2 RK6OV · European Russia ×2 R1IO · European Russia R2UZ/P · European Russia R8KAW/P · Asiatic 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 UB7K

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: KN85 · 630 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,237 km (approx.)
Last such locator decoded: 2026-10-17 21:39 UTC

Other locator fields attributed to this token: KN75 (5).

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	UB7K S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-17 21:56	80m	- / -	S58Z	+12 / -	2	Partial capture
10-17 21:41	80m	-3 / -4	R2EN	-5 / +4	4	✓ Full exchange observed
10-17 21:40	80m	-2 / -6	RV6ANA	-3 / -	4	✓ Full exchange observed
10-17 21:37	80m	-3 / -	S79VU	- / -	6	Partial capture
10-17 21:15	80m	-2 / -	S79VU	- / -	12	Partial capture
10-17 17:15	80m	-5 / -	R1BNG/P	- / -19	9	✓ Closing fragment
10-17 17:05	80m	-1 / -	R1BNG/P	- / -	5	Partial capture
10-17 17:04	160m	- / -	9A6OY	-15 / -	4	Partial capture
10-17 17:04	160m	-3 / -	R9CS/P	- / -13	7	✓ Closing fragment
10-10 15:51	80m	0 / -14	UA9FLI	-9 / -3	6	✓ Full exchange observed
10-07 20:25	160m	- / -	DL7ET	-4 / -	3	Partial capture
10-07 20:20	160m	-6 / -	RV9CX/M	- / -11	2	Partial capture
10-07 20:19	160m	-8 / -	EO210WLP	- / -11	2	Partial capture
10-07 20:13	160m	-6 / -	R9CS/P	- / -11	3	Partial capture
10-07 20:11	160m	+2 / -	RV9C	- / -11	3	Partial capture
10-07 16:24	160m	+4 / -	R6OI	- / -2	2	Partial capture
10-07 16:10	160m	+1 / -	R8KAW/P	- / -17	26	✓ Closing fragment
10-06 15:43	160m	+4 / -	R9CS/P	- / -12	2	Partial capture
10-04 15:37	40m	-2 / -8	RX9WM	-9 / 0	4	✓ Full exchange observed
10-04 15:34	40m	- / -	PA0WDN	-12 / -	2	Partial capture
10-04 15:33	40m	-2 / -8	RC5F	-6 / +6	6	✓ Full exchange observed
10-04 15:33	40m	-1 / -	RW9WJ	-3 / -	3	✓ Closing observed
10-04 15:30	40m	-2 / -	JK7ATC	- / -11	2	✓ Closing fragment
10-04 15:29	40m	- / -	DL6UM	-2 / -	3	Partial capture
10-04 15:29	40m	- / -	UB2FEK	-16 / -	2	Partial capture
10-04 15:27	40m	-5 / +5	UA3PTY	-3 / -	5	✓ Full exchange observed
10-04 15:24	40m	-3 / -14	UB3LCH	+2 / +8	4	✓ Full exchange observed
10-04 15:23	40m	+1 / -	UA4CKN	- / -5	2	✓ Closing fragment
10-04 15:21	40m	-2 / -2	HA7TM	+14 / -	5	✓ Full exchange observed
10-04 15:04	40m	-5 / -	UB4HVA	-14 / -2	4	✓ Closing observed
10-03 20:39	40m	-1 / -	V61GSE	- / -11	19	✓ Closing fragment
10-01 16:26	40m	-2 / -9	R7KB	+5 / -5	5	✓ Full exchange observed
10-01 16:20	40m	-1 / -	UA4NDE	- / -	10	Partial capture
09-24 19:54	40m	-9 / -13	PE1NPS	-1 / -14	6	✓ Full exchange observed
09-24 19:42	40m	- / +3	RD3FY	-8 / -	3	✓ Closing fragment
09-24 19:40	40m	- / +7	GJ0KYZ	+2 / -	2	✓ Closing fragment
09-24 19:39	40m	- / -3	R3DMS	-12 / -	3	✓ Closing fragment
09-24 19:37	40m	- / -	SP2NBH	-8 / -	2	Partial capture
09-24 19:32	40m	-10 / -	JE1POK	- / -18	2	Partial capture
09-24 19:30	40m	- / -17	OE6TNO	0 / -	3	✓ Closing fragment
09-24 19:29	40m	- / +4	GJ0KYZ	+2 / -	3	Partial capture
09-24 19:19	40m	-12 / -6	SQ6ELV	-11 / -	4	✓ Closing observed
09-24 19:13	40m	- / -17	DL9FCK	-11 / -	2	✓ Closing fragment
09-24 19:02	40m	- / +8	R3KLE	-10 / -	2	Partial capture
09-24 18:58	40m	- / -10	F1PBZ	-12 / -	3	Partial capture
09-24 18:38	40m	- / -	9A6OY	-5 / -	6	Partial capture
09-24 18:35	40m	-10 / -4	EU1CZ	-6 / -	4	✓ Closing observed
09-24 18:31	40m	- / -	PE1NPS	-2 / -	2	Partial capture
09-24 18:28	40m	-10 / -	UB0AMB	- / -4	2	✓ Closing fragment
09-24 18:21	40m	- / -14	EA1FKI	-14 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
213730  +0  753  S79VU UB7K KN85 (x5)
214015  -2  752  UB7K RV6ANA KN95
214030  -4  753  RV6ANA UB7K +12
214045  -4  753  UB7K RV6ANA R-06
214100  +1  753  RV6ANA UB7K RR73
214115  -2 2408  UB7K R2EN -04
214200  -3  753  R2EN UB7K R+04
214215  -5 2408  UB7K R2EN RR73 (x2)
215630 +12 2957  UB7K S58Z JN76 (x2)

160m

UTC    dB Audio  Message
202500  -1  318  UB7K DL7ET JO31 (x3)
194530  +6  852  RU0LL/P UB7K KN85
170415  -7  951  R9CS/P UB7K -13
170430 -16 2340  UB7K 9A6OY JN83
170445  -4  951  R9CS/P UB7K -13
170500 -13 2340  UB7K 9A6OY JN83
170515  -6  951  R9CS/P UB7K -13
170530 -17 2340  UB7K 9A6OY JN83 (x2)
170615  -7  951  R9CS/P UB7K -13 (x4)

40m

UTC    dB Audio  Message
153430  -3  480  CQ UB7K KN85
153445  -6 1346  UB7K RC5F KO85
153445 -11 1540  UB7K PA0WDN JO22
153500  -3  480  RC5F UB7K +06
153515  -2 1347  UB7K RC5F R-08
153600  -2  480  RC5F UB7K RR73
153615 -10 1347  UB7K RC5F 73
153615 -13 1540  UB7K PA0WDN JO22
153630  -1  480  CQ UB7K KN85 (x2)
153715  +0  478  UB7K RZ6AOJ KN96
153730  -2  480  RX9WM UB7K +00
153745  -8  482  UB7K RX9WM R-08
153800  -1  480  RX9WM UB7K RR73
153815 -10  483  UB7K RX9WM 73

60m

UTC    dB Audio  Message
190045  +0  383  UB7K DH0BRO JO62

20m

UTC    dB Audio  Message
061615 +12  522  R6OP UB7K KN85
061630  +9 2339  UB7K EA5HEU JN00
061645 +14  522  R6OP UB7K KN85 (x2)
061800  -6  949  UB7K EA3BIC JN11
061815 +13  522  R6OP UB7K KN85
061830  -5  949  UB7K EA3BIC JN11
061845 +10  521  R6OP UB7K KN85 (x6)
065515 +14  486  <...> UB7K KN85 (x2)

10m

UTC    dB Audio  Message
085515 -16 1308  RI0FA UB7K -07 (x6)

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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