YU7VK — 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: Serbia Most frequent locator attributed to this token: KN04

Receiver-side FT8 activity involving YU7VK, decoded by SO8OO in southeastern Poland. 423 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 39 UTC dates in the available aggregate history. Observed between 2026-06-27 and 2026-10-16.

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 423 FT8 messages attributed to YU7VK as the transmitting token by decoded message structure across 39 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (33%), followed by 80 m (27%) and 60 m (24%). Several six-hour UTC windows tied for the largest share (74%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

423

Messages attributed

UTC dates decoded

Active 15-min windows

-8 dB

Estimated median S/N

Bands

160m · 21 80m · 115 60m · 101 40m · 139 20m · 35 10m · 12

First attributed message: 2026-06-27
Last attributed message: 2026-10-16 18:28 UTC

Observed FT8 message patterns

Attributed sample: 423 messages
Active dates: 39 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -18 to +6 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 74, moderate (-15 to -9 dB) 126, strong (≥ -8 dB) 223.

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 YU7VK in decoded directed-looking exchanges:

YO4NF · Romania ×3 DK7UY · Fed. Rep. of Germany ×2 TN8GD · Republic of the Congo ×2 9A4ZM · Croatia ×2 US2YW · Ukraine ×2 YO4GIY · Romania ×2 DK7ZT · Fed. Rep. of Germany ×2 OM5JG · Slovak Republic ×2 4Z5ML · Israel CE2SV · Chile CT1EEX · Portugal CT3MD · Madeira Islands

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 YU7VK

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: KN04 · 150 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 608 km (approx.)
Last such locator decoded: 2026-10-16 18:28 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	YU7VK S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-16 18:56	40m	- / -	PE1NPS	0 / -	2	Partial capture
10-16 18:55	40m	- / -7	RV3X	+1 / -	3	✓ Closing fragment
10-16 18:25	40m	- / -5	ON3CCM	-10 / -	3	✓ Closing fragment
10-11 06:06	40m	+4 / -	SQ8ECJ	- / -	2	✓ Closing fragment
10-11 06:05	40m	- / -	DL3IAK	-7 / -	7	Partial capture
10-11 06:03	40m	- / -10	R2SN	-16 / -	2	✓ Closing fragment
10-11 06:00	40m	- / +6	IQ0AAX	-15 / -	2	✓ Closing fragment
10-11 05:52	40m	- / 0	YO3GNF	-9 / -	3	✓ Closing fragment
10-09 04:19	40m	- / -19	RC5F	-7 / -	3	✓ Closing fragment
10-09 04:14	40m	- / -	RZ4FWA	-21 / -	3	Partial capture
10-08 18:29	40m	+1 / 0	S53AK	-8 / -5	5	✓ Full exchange observed
10-08 18:27	40m	0 / -8	DK7UY	0 / -12	4	✓ Full exchange observed
10-08 18:24	40m	- / -	DK7UY	0 / -	2	Partial capture
10-08 18:22	40m	0 / -	A93MO	- / -11	2	✓ Closing fragment
10-08 18:20	40m	0 / -	9A5MP	- / -22	3	✓ Closing fragment
10-08 18:17	40m	-1 / -	9A5MP	- / -	3	Partial capture
10-06 18:47	160m	-23 / -22	HA8ZG	-16 / -	4	✓ Closing observed
10-06 18:44	80m	+2 / -	EA1IOK	-8 / -24	6	Partial capture
10-06 18:44	80m	+6 / -11	EC3A	-7 / -8	5	✓ Full exchange observed
10-04 19:48	160m	-16 / -	F4BPO	0 / -14	8	Partial capture
10-04 19:47	160m	- / -22	HA5AO	+7 / -	2	✓ Closing fragment
10-04 19:42	160m	- / -	F4BPO	+3 / -	3	Partial capture
09-18 04:43	80m	+5 / -	C31KC	- / -18	4	✓ Closing fragment
09-18 04:37	80m	+4 / -	ON4MAP	-20 / -25	7	Partial capture
09-18 04:36	80m	+3 / -9	US2YW	+6 / +2	5	✓ Full exchange observed
09-18 04:34	80m	+6 / -	GU4WRP	- / -	5	Partial capture
09-17 19:00	160m	- / -21	OE3KJO	-12 / -	2	✓ Closing fragment
09-17 18:49	160m	- / +1	YO2CK	-6 / -	2	✓ Closing fragment
09-13 19:45	160m	-16 / -15	9A5E	-1 / -	5	✓ Full exchange observed
09-13 19:40	80m	+5 / -	TA7DX	-6 / +2	4	✓ Closing observed
09-13 19:30	80m	+12 / -2	YL3PK	-8 / -22	8	✓ Full exchange observed
09-13 19:26	80m	-1 / -	ON5MX	- / -16	2	Partial capture
09-13 19:18	80m	- / -	YL3BU	+12 / -	2	Partial capture
09-13 19:15	80m	- / -	YL3BU	+7 / -	2	Partial capture
09-13 19:15	80m	+2 / -5	LB6BK	-13 / -18	5	✓ Full exchange observed
09-13 19:14	80m	0 / -14	OH2CI	0 / -14	4	✓ Full exchange observed
09-13 19:11	80m	+15 / -9	SN40KZE	+1 / -17	4	Partial capture
09-13 19:03	80m	+12 / -	9H4JX	- / -6	2	Partial capture
09-12 20:03	80m	+6 / -14	OZ1A	-1 / -21	3	Partial capture
09-12 20:03	80m	- / -	EA1IOK	-11 / -	3	Partial capture
09-12 20:03	80m	- / -11	F1PBZ	-2 / -	3	Partial capture
09-12 20:03	80m	- / -11	R2EA	0 / -	2	Partial capture
09-12 19:54	160m	- / -24	OK1DXR	+4 / -	4	✓ Closing fragment
09-12 19:47	160m	- / -16	YO2MTG	+8 / -	3	✓ Closing fragment
09-12 19:44	160m	- / -11	SP5GW	+2 / -	3	✓ Closing fragment
09-09 19:01	40m	0 / -3	YO3GK	+5 / +4	5	✓ Full exchange observed
08-30 04:08	40m	- / -	R6DVV	-12 / -	4	Partial capture
08-30 04:07	40m	- / -12	UR3AHB	+5 / -	2	Partial capture
08-29 04:31	20m	- / -	EK1KE	-20 / -	2	Partial capture
08-29 04:15	80m	-6 / -	SM7TZK	- / -	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
060715  +2  897  SQ8ECJ YU7VK RR73
060730  -7  349  YU7VK DL3IAK JN49 (x2)
060815  +2  897  DF2KD YU7VK -20
060900  -5  349  YU7VK DL3IAK JN49
060945  -3 2194  DG4YT YU7VK -24
182530 -10 1203  YU7VK ON3CCM -05 (x3)
182845 -12 1510  BG0FQU YU7VK KN04
185515  -1 2076  YU7VK RV3X KO84 (x3)
185615  -1  594  YU7VK PE1NPS JO22 (x2)

160m

UTC    dB Audio  Message
194745  +8  981  YU7VK HA5AO RR73
194815  +6 1525  YU7VK F4BPO JN36 (x2)
194900 -21  980  F4BPO YU7VK -14
194915  +0 1525  YU7VK F4BPO JN36 (x2)
195000 -15  980  F4BPO YU7VK -16
195015  -7 1525  YU7VK F4BPO JN36
195030 -13  981  F4BPO YU7VK -14
195345  +5 2102  YU7VK SP5GW KO12
184745 -22 1640  HA8ZG YU7VK KN04
184800 -15 1640  YU7VK HA8ZG -22 (x2)
184845 -24 1641  HA8ZG YU7VK 73
185015 -23 1641  CQ YU7VK KN04

80m

UTC    dB Audio  Message
184115 -16  203  CQ YU7VK KN04
184200  +3  947  YU7VK DL9AJ JO52
184400 -12 1226  YU7VK EC3A -11
184400 -11  559  YU7VK EA1IOK IN62
184430  +9  723  YU7VK OE5ABL -13
184430  -2 1226  YU7VK EC3A -11
184430  -9  559  YU7VK EA1IOK IN62
184445  +6  723  EC3A YU7VK R-08
184500  -7 1226  YU7VK EC3A RR73
184500  -6  559  YU7VK EA1IOK IN62
184530  -7 1226  YU7VK EC3A RR73
184530  -6  559  YU7VK EA1IOK IN62
184600  +7  722  YU7VK UR3LM KN89
184615  +0  723  EA1IOK YU7VK -24 (x2)

10m

UTC    dB Audio  Message
190045 -19 1175  YU7VK PE1NZS JO21
112915  -8  617  YU7VK DN9DKN JO31
113415 -14  654  YU7VK DC5IU JN49
113415  -2 1233  YU7VK 9A7Y JN65
113445 -11  654  YU7VK DC5IU JN49 (x4)
163015  -2  676  YU7VK DH5BM JO41 (x3)
164000  -8  569  YU7VK 4Z5ML -23 (x2)
210830  -6 2590  YU7VK DF7EF JO30
104430 -22 1284  YU7VK EA8VJ -08

20m

UTC    dB Audio  Message
202945  -5 2106  YU7VK UA6YW LN04 (x2)
204345  -6 1978  YU7VK F4JZW JN08
204345  -8 2042  YU7VK BG7BVI -07
204415  -7 1978  YU7VK F4JZW R-01 (x3)
204545  -1 2854  YU7VK JR2TER PM84
181045 -17 2421  YU7VK PE1NPS JO22
181045 +12 2191  YU7VK F4FSY -11
181115 -12 2421  YU7VK PE1NPS JO22
181300  +0  671  YU7VK F5PBG R-06
043130 -22 1319  YU7VK EK1KE RRR (x2)
043645  -8 1321  EK1KE YU7VK 73

60m

UTC    dB Audio  Message
040615 -15 1233  YU7VK F4GAJ 73
040700  -5 1173  OS4K YU7VK R-11
040830  -8 1653  SQ2RBY/P YU7VK KN04 (x3)
041030  -5 1174  KQ4RLN YU7VK KN04
041045 -15 1653  YU7VK EA5JHD -15
041100  -3 1174  KQ4RLN YU7VK KN04
041130  -4 1174  EA5JHD YU7VK R+01 (x2)
041245 -11 1174  YU7VK EA5JHD RRR
041300  -7 1174  EA5JHD YU7VK 73
041315  -3 1913  YU7VK SV2BWY KN10
041315  -4 2275  YU7VK IU6JMK JN63
041345  -2 1913  YU7VK SV2BWY KN10

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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