YO3CBS — 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: Romania Most frequent locator attributed to this token: KN34

Receiver-side FT8 activity involving YO3CBS, decoded by SO8OO in southeastern Poland. 78 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-11-01.

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 78 FT8 messages attributed to YO3CBS as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (58%), followed by 20 m (42%). Several six-hour UTC windows tied for the largest share (99%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (67%); the estimated median was -4 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-4 dB

Estimated median S/N

Bands

40m · 45 20m · 33

First attributed message: 2026-06-07
Last attributed message: 2026-11-01 01:45 UTC

Observed FT8 message patterns

Attributed sample: 78 messages
Active dates: 6 UTC dates
Estimated median S/N: -4 dB
Estimated 10th-90th percentile: -13 to +9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 19, strong (≥ -8 dB) 52.

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 YO3CBS in decoded directed-looking exchanges:

RL1B · European Russia EA4GA · Spain HK3TY · Colombia ND9M · United States OA4ENG · Peru R2SN · European Russia R4ADJ · European Russia TI4LAS · Costa Rica

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 YO3CBS

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: KN34 · 51 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 721 km (approx.)
Last such locator decoded: 2026-11-01 01:45 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	YO3CBS S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-01 01:36	40m	- / -11	EA1AGM	-12 / -	7	Partial capture
10-25 05:54	40m	0 / -	KZ7Y	- / -	4	Partial capture
10-25 05:09	40m	+6 / -	ND9M	- / -12	3	✓ Closing fragment
10-25 05:08	40m	- / -	UR9QQ	-13 / -	5	Partial capture
10-25 05:06	40m	+7 / -	TI4LAS	- / -6	3	✓ Closing fragment
10-25 04:48	40m	-8 / -	TA4SSK	- / +6	2	Partial capture
10-25 04:44	40m	-5 / -	XE1YD	- / -	3	Partial capture
10-25 04:40	40m	- / -	UR9QQ	-8 / -	2	Partial capture
10-25 04:40	40m	-12 / -	KN6TBF	- / -	2	Partial capture
10-25 04:38	40m	-2 / -9	HK3TY	-12 / -1	5	✓ Full exchange observed
10-25 04:35	40m	-6 / -	N3SD	- / -16	4	Partial capture
10-24 07:48	40m	+14 / -	R2SN	- / +3	2	✓ Closing fragment
10-24 07:46	40m	+10 / -	EA4GA	- / -14	3	✓ Closing fragment
10-24 07:04	40m	+4 / -	OA4ENG	- / -17	4	✓ Closing fragment
10-24 07:02	40m	+7 / -	R4ADJ	- / -2	3	✓ Closing fragment
10-17 08:55	10m	- / 0	RL1B	-13 / -	2	✓ Closing fragment
08-09 03:35	40m	-8 / -	YV5YMA	- / -	4	Partial capture
08-09 03:03	40m	- / +3	RX7T	-7 / -	4	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
051145 -11 2330  YO3CBS UR9QQ KN77
055215  -1 2122  K5WKH YO3CBS KN34
055430  -2 2122  KZ7Y YO3CBS KN34 (x4)
013600 -14 1568  YO3CBS EA1AGM IN83 (x7)
014530 -24 1909  YN2RP YO3CBS KN34
015215 -24 1910  YO3CBS EA4HTI IM69

10m

UTC    dB Audio  Message
085515 -15 1371  YO3CBS RL1B +00 (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