YO8SAC — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Romania Most frequent locator attributed to this token: KN36

Receiver-side FT8 activity involving YO8SAC, decoded by SO8OO in southeastern Poland. 28 FT8 messages attributed to this token as transmitter, on 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-13 and 2026-07-13.

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 28 FT8 messages attributed to YO8SAC as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Several six-hour UTC windows tied for the largest share (93%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-9 dB

Estimated median S/N

Bands

20m · 28

First attributed message: 2026-06-13
Last attributed message: 2026-07-13 19:36 UTC

Observed FT8 message patterns

Attributed sample: 28 messages
Active dates: 6 UTC dates
Estimated median S/N: -9 dB
Estimated 10th-90th percentile: -18 to +3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 10, strong (≥ -8 dB) 14.

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 YO8SAC in decoded directed-looking exchanges:

GB2WWA · England R6FX · European Russia 9K2MP · Kuwait BG7BMG · China DL3MIB · Fed. Rep. of Germany DS5USH · Republic of Korea F4DUZ · France HA1BF · Hungary HZ1KS · Saudi Arabia JY5IB · Jordan RN6MA · European Russia UR9QQ · Ukraine

Most frequent locator attributed to YO8SAC

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: KN36 · 10 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 543 km (approx.)
Last such locator decoded: 2026-07-13 19:36 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	YO8SAC S/N	Counterpart	Counterpart S/N	Msgs	Capture
07-13 19:29	20m	-18 / -	F4DUZ	-22 / -5	4	✓ Closing observed
07-13 19:24	20m	- / -12	UA6YW	-9 / -	2	Partial capture
07-13 19:19	20m	- / -13	PD3LKN	-15 / -	3	Partial capture
07-13 19:16	20m	- / +1	PA2IPA	-17 / -	7	Partial capture
07-11 18:05	20m	- / 0	HA1BF	-4 / -	2	✓ Closing fragment
07-11 16:54	20m	-12 / -	AP5ARS	- / -	2	Partial capture
07-11 16:47	20m	- / -13	LZ1BT	-22 / -	4	Partial capture
07-06 19:17	20m	-10 / -	DS5USH	- / -11	3	✓ Closing fragment
07-06 19:14	20m	-15 / -	HZ1KS	- / -	2	✓ Closing fragment
07-06 19:04	20m	0 / -	RN6MA	- / -11	2	✓ Closing fragment
07-06 19:02	20m	-11 / -	BG7BMG	- / -17	2	✓ Closing fragment
07-06 18:58	20m	- / -10	JY5IB	-19 / -	2	✓ Closing fragment
07-05 13:28	20m	- / -2	SN0WWA	-2 / -	2	Partial capture
07-05 09:29	10m	- / -6	DO9PV	-18 / -	2	Partial capture
07-05 09:29	10m	- / -	R6FX	-8 / -	3	✓ Closing fragment
07-05 07:00	20m	- / +2	YO4NF	-6 / -	3	✓ Closing fragment
07-05 06:53	20m	- / -16	RC5F	-17 / -	3	Partial capture
07-05 06:49	20m	- / +1	DL3MIB	-11 / -	4	✓ Closing fragment
07-05 06:49	20m	- / -	DB7GE	-10 / -	6	Partial capture
07-05 06:46	20m	- / -2	YO4NT	-6 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
191745 -15 1822  YO8SAC PA2IPA R+01 (x4)
191945 -19 1240  YO8SAC PD3LKN R-13
191945 -21 1822  YO8SAC PA2IPA R+01
192045 -12 1239  YO8SAC PD3LKN R-13 (x2)
192445  -9  690  YO8SAC UA6YW -12 (x2)
192945 -24 1493  YO8SAC F4DUZ JN19 (x2)
193130 -18 1492  F4DUZ YO8SAC -05 (x2)
193600 -11 3148  CQ YO8SAC KN36

10m

UTC    dB Audio  Message
092900 -12 2676  YO8SAC R6FX LN14 (x2)
092930 -19 1838  YO8SAC DO9PV JO30
093100  -7 2676  YO8SAC R6FX 73
093100 -17 1837  YO8SAC DO9PV R-06
120330 -17 2388  YO8SAC GB2WWA RR73

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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