YT1VDA — 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 YT1VDA, decoded by SO8OO in southeastern Poland. 2,553 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 54 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-23.

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 2,553 FT8 messages attributed to YT1VDA as the transmitting token by decoded message structure across 54 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (70%), followed by 20 m (23%) and 80 m (7%). Most decodes (74%) fell within the six-hour window 16:00-22:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

2,553

Messages attributed

UTC dates decoded

257

Active 15-min windows

-8 dB

Estimated median S/N

Bands

80m · 174 40m · 1,788 20m · 591

First attributed message: 2026-06-06
Last attributed message: 2026-10-23 17:01 UTC

Observed FT8 message patterns

Attributed sample: 2,553 messages
Active dates: 54 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -20.1 to +2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 759, moderate (-15 to -9 dB) 505, strong (≥ -8 dB) 1,289.

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 YT1VDA in decoded directed-looking exchanges:

F4LPO · France ×2 LZ3CB · Bulgaria ×2 CS7BPG · Portugal ZS6MGM · South Africa 4X4DK · Israel 5P1KZX · Denmark CT1BFP · Portugal CT3MD · Madeira Islands CT4KQ · Portugal DA1EA · Fed. Rep. of Germany DC1KN · Fed. Rep. of Germany DF6WE · Fed. Rep. of Germany

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 YT1VDA

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 · 1,557 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 608 km (approx.)
Last such locator decoded: 2026-10-23 17:00 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	YT1VDA S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-23 17:01	40m	- / -	RN3DN	+3 / -	3	Partial capture
10-23 17:01	40m	-4 / -	RA3LBW	-4 / +2	4	✓ Closing observed
10-23 16:59	40m	-2 / -12	SP6PST	-12 / -10	4	✓ Full exchange observed
10-23 16:55	40m	-1 / -4	OK1XLE	+5 / +6	7	✓ Full exchange observed
10-23 16:53	40m	-1 / -	RL6ZK	-16 / -10	5	✓ Closing observed
10-23 16:52	40m	-2 / -	RM1B	- / +2	2	✓ Closing fragment
10-23 16:49	40m	-4 / -	TA3XEE	- / -19	2	✓ Closing fragment
10-23 16:44	40m	-2 / -	RA8AF	-8 / -10	11	✓ Closing observed
10-23 16:41	40m	0 / -9	UA6BGM	-1 / -6	7	✓ Full exchange observed
10-23 16:38	40m	-1 / -	JA4FKX	- / -	5	Partial capture
10-23 16:36	40m	-1 / -	VJ6X	- / -	4	Partial capture
10-23 16:36	40m	- / -	OK2CNI	-2 / -	3	Partial capture
10-23 16:30	40m	-2 / -	VJ6X	- / -	5	Partial capture
10-23 16:25	40m	-8 / -	A61DD	- / -	3	Partial capture
10-23 16:03	40m	-2 / -	R8OAE	- / -	4	Partial capture
10-23 15:55	40m	+4 / -	IW2HWN	- / -20	2	Partial capture
10-23 15:53	40m	-4 / +6	OH3MB	0 / +3	4	✓ Full exchange observed
10-23 15:52	40m	- / -19	F1PBZ	-4 / -	4	Partial capture
10-23 15:48	40m	-2 / -1	S53AK	+4 / +8	7	✓ Full exchange observed
10-23 15:48	40m	0 / -6	I4BUQ	-10 / -8	7	✓ Full exchange observed
10-23 11:42	40m	-6 / -	IZ8XXE	- / -13	2	✓ Closing fragment
10-22 17:37	40m	- / -	UR3QMO	-20 / -	3	Partial capture
10-22 17:30	40m	-15 / -	SA6BZZ	- / -	5	Partial capture
10-22 17:26	40m	- / -4	PD7JLP	-7 / -	6	Partial capture
10-22 17:26	40m	-10 / -	SQ8V	- / +4	2	Partial capture
10-22 17:22	40m	-12 / -	IV3HOS	- / -5	2	✓ Closing fragment
10-22 16:57	40m	-8 / -	DL2VN	- / -2	4	Partial capture
10-22 16:51	40m	-8 / -	ER1XYZ	- / -17	2	Partial capture
10-22 16:49	40m	-5 / -	YL3GAO	- / +8	2	✓ Closing fragment
10-22 16:46	40m	-5 / -	M9NTS	-18 / -19	6	Partial capture
10-22 16:40	40m	-10 / -	F6DQZ	-6 / -11	4	✓ Closing observed
10-22 16:38	40m	-8 / -	EB3BKW	- / -7	3	✓ Closing fragment
10-22 16:29	40m	-6 / -	RD3BZ	-17 / -4	7	Partial capture
10-22 14:07	40m	-7 / -	R4IQ	- / -18	6	Partial capture
10-22 14:04	40m	-2 / -16	DD0IPA	-11 / -14	5	✓ Full exchange observed
10-22 14:04	40m	-4 / -	9A3AWN	-18 / -9	3	✓ Closing observed
10-22 14:01	40m	-4 / -	IZ8QSN	- / -16	3	✓ Closing fragment
10-22 14:00	40m	-6 / -7	PE9JAN	-9 / -7	5	✓ Full exchange observed
10-22 13:59	40m	- / -18	F1PBZ	-2 / -	2	Partial capture
10-22 13:56	40m	- / +5	HA/OE3RAP	-9 / -	3	Partial capture
10-22 13:56	40m	-6 / -12	PD1ACS	-17 / -9	4	✓ Full exchange observed
10-21 19:12	40m	- / -1	DL4DP	-15 / -	3	Partial capture
10-21 19:09	40m	- / -	R6LE	+6 / -	2	Partial capture
10-20 19:44	40m	- / 0	DL4DO	+2 / -	4	✓ Closing fragment
10-20 17:59	40m	0 / -	ES7KEW	-11 / -7	4	✓ Closing observed
10-20 17:57	40m	-3 / +2	DK9EU	-2 / -9	7	✓ Full exchange observed
10-20 17:52	40m	+4 / -	IT9PHU	-19 / -3	3	✓ Closing observed
10-20 17:52	40m	0 / -19	OH3EVO	+5 / +3	8	✓ Full exchange observed
10-16 19:09	40m	- / -1	PF1B	-5 / -	5	✓ Closing fragment
10-16 19:08	40m	- / 0	DK1XAM	-7 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
165745  +4 1592  OK1XLE YT1VDA 73
165815  +4 1597  CQ YT1VDA KN04
165845  +3 1597  LY2CX YT1VDA KN04
165915  +1 1597  SP6PST YT1VDA -10 (x2)
170000 -12 1591  YT1VDA SP6PST R-12
170015  -2 1597  SP6PST YT1VDA RR73
170045 -11 1597  CQ YT1VDA KN04
170100  -8 1596  YT1VDA RA3LBW KO64
170115  -4 1597  RA3LBW YT1VDA +02
170130  +3  487  YT1VDA RN3DN KO84
170145  -3 1597  RA3LBW YT1VDA RR73
170200  +7  487  YT1VDA RN3DN KO84
170200  -1 1595  YT1VDA RA3LBW 73
170330  -1  487  YT1VDA RN3DN KO84

80m

UTC    dB Audio  Message
214715  +4 1507  ON6AA YT1VDA KN04
163230 -18 1267  DG1HBA YT1VDA KN04
163245  -3 1388  YT1VDA DG1HBA -09
163300 -11 1266  DG1HBA YT1VDA R-04
163315  +2 1388  YT1VDA DG1HBA RR73
163330 -15 1266  DG1HBA YT1VDA 73
174200  -4 1266  DO9KB YT1VDA KN04 (x2)
174245  +8 1426  YT1VDA DO9KB -20
174300  +6 1270  DO9KB YT1VDA KN04
174315  +6 1426  YT1VDA DO9KB -20
174330  +3 1271  DO9KB YT1VDA R-02
174345  +3 1426  YT1VDA DO9KB RR73
174400  +0 1270  DO9KB YT1VDA R-02 (x2)

10m

UTC    dB Audio  Message
151800 -22 1888  YT1VDA ZS6MGM RR73
151800 -11 1593  YT1VDA CS7BPG IN51 (x3)

20m

UTC    dB Audio  Message
101600  -7 1656  CQ YT1VDA KN04
101615 -10  269  YT1VDA RA6OY KN88
101630  -1 1655  CQ YT1VDA KN04 (x2)
101715 -13  270  YT1VDA RA6OY KN88
101730  -4 1653  CQ YT1VDA KN04
101745 -12  269  YT1VDA RA6OY KN88
101800  -4 1652  CQ YT1VDA KN04 (x5)
102045 -19 1648  YT1VDA DF6XN JO32
102115 -10  896  YT1VDA R9YBW MO91 (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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee