YO2SH — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Romania Most frequent locator attributed to this token: KN15

Receiver-side FT8 activity involving YO2SH, decoded by SO8OO in southeastern Poland. 21 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-07-16 and 2026-09-18.

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 21 FT8 messages attributed to YO2SH as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (52%), followed by 40 m (33%) and 20 m (14%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (62%); the estimated median was +1 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

+1 dB

Estimated median S/N

Bands

80m · 11 40m · 7 20m · 3

First attributed message: 2026-07-16
Last attributed message: 2026-09-18 17:49 UTC

Observed FT8 message patterns

Attributed sample: 21 messages
Active dates: 4 UTC dates
Estimated median S/N: +1 dB
Estimated 10th-90th percentile: -18 to +10 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 3, strong (≥ -8 dB) 13.

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 YO2SH in decoded directed-looking exchanges:

F5URG · France IQ4JO · Italy RA9UO · Asiatic Russia RX7T · European Russia UA3WG · European Russia R4FV · European 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 YO2SH

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: KN15 · 5 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 502 km (approx.)
Last such locator decoded: 2026-09-18 17:49 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	YO2SH S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-18 17:47	80m	+12 / -	R4FV	-3 / -11	3	✓ Closing observed
09-18 17:46	80m	+10 / -	ZL2NU	- / -25	4	Partial capture
08-30 15:27	20m	- / -4	RI1FJL	-16 / -	2	Partial capture
08-30 04:26	40m	- / -10	UA3WG	-12 / -	2	✓ Closing fragment
08-29 13:45	20m	- / +8	RA9UO	-7 / -	3	✓ Closing fragment
08-11 18:14	40m	+2 / -	LX1NO	- / -9	2	Partial capture
08-11 17:45	40m	-12 / -	<...>	- / -13	2	Partial capture
08-11 17:43	40m	- / -	YO6FNF	-7 / -	3	Partial capture
08-11 17:38	40m	-18 / -	C31BP	- / -16	2	Partial capture
08-09 19:01	20m	-16 / -	EW6EW	- / -11	2	Partial capture
07-16 18:44	80m	- / -	UA4FKT	+10 / -	2	Partial capture
07-16 18:41	80m	+2 / -	<...>	- / -3	3	Partial capture
07-12 15:52	20m	- / -5	F5URG	+6 / -	3	✓ Closing fragment
07-12 15:51	20m	- / -4	RX7T	0 / -	2	Partial capture
06-28 05:46	20m	- / +3	IQ4JO	+3 / -	5	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
184115  +3 1275  <...> YO2SH -03 (x3)
184245  -2 1275  YR50NADIA YO2SH R-04
184400 +10 1275  YO2SH UA4FKT LO23
184400  -5  889  YO2SH RC6OZ KN98
184430 +10 1275  YO2SH UA4FKT LO23
174530  +8 2041  CQ YO2SH KN15
174630 +10 2131  ZL2NU YO2SH R-25
174700 +15 2131  R4FV YO2SH R-11
174715  -3 1190  YO2SH R4FV RR73
174730 +10 2131  R4FV YO2SH 73
174800 +10 2130  ZL2NU YO2SH KN15 (x3)

20m

UTC    dB Audio  Message
155230  +8 2873  YO2SH F5URG -05 (x3)
160130  -1 2483  YO2SH RX7T RR73
185400 -18 1806  YO2SH YO8CRU KN36
190115 -20 1294  EW6EW YO2SH R-11 (x2)
190245 -18 2004  8Q7PR YO2SH -14
140315 -14 1328  YO2SH CR5VP -09
134515  -2 1991  YO2SH RA9UO +08
134515 -14 2230  YO2SH R7OV KN87
134545 -10 1991  YO2SH RA9UO +08 (x2)
152700 -17  479  YO2SH RI1FJL R-04 (x2)

40m

UTC    dB Audio  Message
173845 -19 1377  C31BP YO2SH -16 (x2)
174145 -16 1277  GB64MOD YO2SH -04
174330  -5 1221  YO2SH YO6FNF KN25 (x3)
174545 -10 2124  <...> YO2SH -13 (x2)
181430  +2  519  LX1NO YO2SH -09 (x2)
042645 -18 1293  YO2SH UA3WG R-10 (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.

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