YO8RSL — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Romania Most frequent locator attributed to this token: KN37

Receiver-side FT8 activity involving YO8RSL, decoded by SO8OO in southeastern Poland. 1,328 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 62 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-06.

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 1,328 FT8 messages attributed to YO8RSL as the transmitting token by decoded message structure across 62 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (64%), followed by 80 m (19%) and 20 m (15%). Most decodes (87%) fell within the six-hour window 00:00-06:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.

Overview

1,328

Messages attributed

UTC dates decoded

212

Active 15-min windows

-13 dB

Estimated median S/N

Bands

80m · 255 60m · 23 40m · 847 20m · 202 10m · 1

First attributed message: 2026-06-07
Last attributed message: 2026-09-06 08:27 UTC

Observed FT8 message patterns

Attributed sample: 1,328 messages
Active dates: 62 UTC dates
Estimated median S/N: -13 dB
Estimated 10th-90th percentile: -21.6 to +6 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 509, moderate (-15 to -9 dB) 398, strong (≥ -8 dB) 421.

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 YO8RSL in decoded directed-looking exchanges:

IK4LZH · Italy ×3 F1PBZ · France ×3 UA9SY · Asiatic Russia ×3 KR4DWD · United States ×2 IQ9USG · Sicily ×2 OH5WWA · Finland ×2 IQ7KM · Italy ×2 KP4PW · United States ×2 R4ML · European Russia ×2 SK3WWA · Sweden ×2 K5OA · United States ×2 IK4CBO · Italy

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 YO8RSL

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: KN37 · 998 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 468 km (approx.)
Last such locator decoded: 2026-09-06 04:52 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	YO8RSL S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-08 23:47	80m	- / -	GX4RAF/P	+8 / -	2	Partial capture
09-08 23:41	80m	- / +2	R3PJV	-1 / -	3	✓ Closing fragment
09-08 23:40	80m	- / -	9A2TN	+8 / -	2	Partial capture
09-08 04:28	40m	- / -19	EH3PDA	-16 / -	2	✓ Closing fragment
09-08 03:03	40m	- / -25	9Y4C	-18 / -	2	✓ Closing fragment
09-07 02:01	40m	- / -	KB3Z	-8 / -	2	Partial capture
09-06 04:52	40m	-9 / -	LA5LDX/P	- / -12	3	✓ Closing fragment
09-06 04:45	40m	-10 / -	SP5DFK/QRP	- / -3	2	Partial capture
09-06 04:05	40m	-15 / -	N4NF	- / -	3	Partial capture
09-06 03:53	40m	- / -10	TA2TDW	-15 / -	2	✓ Closing fragment
09-06 03:49	40m	- / -4	RN3ZBX	+8 / -	2	✓ Closing fragment
09-06 02:25	40m	- / -11	SY1BKQ	+2 / -	2	Partial capture
09-06 02:20	40m	- / -9	F1IQH	-5 / -	3	✓ Closing fragment
09-06 02:15	40m	- / -6	LA4O	-9 / -	2	✓ Closing fragment
09-06 01:15	40m	- / -24	W4UCK	-10 / -	3	✓ Closing fragment
09-05 02:02	40m	- / -20	M6WRB	-11 / -	5	✓ Closing fragment
09-04 23:42	40m	-4 / -	K1NOX	- / -	6	Partial capture
09-04 22:54	40m	- / -12	K5OA	-4 / -	2	✓ Closing fragment
09-04 22:32	40m	- / -14	ON5WR	-7 / -	2	✓ Closing fragment
09-04 03:14	40m	-14 / -16	WF2A	+8 / -2	4	✓ Full exchange observed
09-04 03:10	40m	-15 / -22	KQ4NAQ	-18 / -18	5	✓ Full exchange observed
09-04 03:05	40m	-16 / -	FM5GB	- / -	2	Partial capture
09-04 03:03	40m	- / -17	IK8DUA	-8 / -	3	✓ Closing fragment
09-04 03:01	40m	-17 / -	KK7UXY	- / -	4	Partial capture
09-04 02:58	40m	-10 / -	YU65AEC	- / -5	2	Partial capture
09-04 02:49	40m	-10 / -	KY2J	- / -	2	Partial capture
09-04 02:45	40m	-11 / -19	KP4PW	-13 / -19	5	✓ Full exchange observed
09-04 01:37	40m	- / -	M0PFX	-20 / -	5	Partial capture
09-03 04:55	40m	-12 / -	SP8BJU	- / -8	5	✓ Closing fragment
09-03 04:55	40m	- / -	YL3GAO	-6 / -	2	Partial capture
09-03 04:51	40m	-10 / -	VA2EHQ	- / -	4	Partial capture
09-03 02:26	40m	- / -11	N1MIW	-18 / -	4	✓ Closing fragment
09-03 00:49	40m	- / -22	AA4JM	-15 / -	3	✓ Closing fragment
09-02 04:34	40m	- / -12	F1UNR	-14 / -	2	Partial capture
09-02 04:05	40m	- / -	PY1USK	-13 / -	2	Partial capture
09-02 03:58	40m	- / -8	SV1ENM	-12 / -	2	✓ Closing fragment
09-02 02:56	80m	+10 / -8	UA6HFI	-4 / -19	5	✓ Full exchange observed
09-02 02:48	80m	+14 / -5	K5OA	-4 / -19	9	✓ Full exchange observed
09-02 02:35	40m	- / -13	RU6UR	-17 / -	5	✓ Closing fragment
08-31 07:04	20m	-9 / -	CS7BHA	- / -25	2	Partial capture
08-31 06:47	20m	- / -15	TA2ED	-12 / -	2	✓ Closing fragment
08-31 02:15	80m	- / -	DL9KM	-10 / -	7	Partial capture
08-31 02:15	80m	- / -5	ON1JP	-21 / -	6	Partial capture
08-31 02:13	80m	+12 / -	LZ1EV	- / -9	3	✓ Closing fragment
08-30 03:33	40m	- / -9	KB3Z	-18 / -	3	✓ Closing fragment
08-30 03:03	80m	+5 / -	<...>	- / -	5	Partial capture
08-29 04:53	20m	- / -10	9A5MTV	-18 / -	2	Partial capture
08-29 02:34	40m	- / -10	UA9SY	-5 / -	3	Partial capture
08-29 02:30	40m	- / -15	F4MZI	-4 / -	2	✓ Closing fragment
08-29 01:28	40m	-16 / -	WB3FAA	- / -	4	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
025445 +10 1651  CQ YO8RSL KN37 (x3)
025600  -4  954  YO8RSL UA6HFI LN04
025615 +10 1651  UA6HFI YO8RSL -19
025630  -6  954  YO8RSL UA6HFI R-08
025645  +9 1651  UA6HFI YO8RSL RR73
025700  -1  955  YO8RSL UA6HFI 73
234000  +9  610  YO8RSL 9A2TN JN95 (x2)
234100  +2 2460  YO8RSL R3PJV R+02 (x3)
234700  +6  809  YO8RSL GX4RAF/P +15 (x2)

40m

UTC    dB Audio  Message
044545 -11 1353  CQ YO8RSL KN37
044615  -6 1353  SP5DFK/QRP YO8RSL R-03
044630  -5  595  YO8RSL RR73; EW2GI <...> -16
045215 -13 1356  LA5LDX/P YO8RSL KN37 (x3)
082700  +5 2436  YO8RSL SQ100PKP -06
082715 -14 1600  UA3UBV/1 YO8RSL R-13
020115  -8 1633  YO8RSL KB3Z FN20 (x2)
030300 -17 1869  YO8RSL 9Y4C -25 (x2)
031145 -10  587  YO8RSL UA9SY LO63
042800 -18  944  YO8RSL EH3PDA -19 (x2)

10m

UTC    dB Audio  Message
105630 -21 1523  YO8RSL M8FQT IO93 (x4)
134400 -14 1784  YO8RSL PE9JAN JO22 (x3)
135615 -10 1678  YO8RSL PD1RMB JO32 (x4)
112130  +4 2682  YO8RSL DF7EF JO30 (x3)
131500  -3  487  YO8RSL CS7AWL -08

20m

UTC    dB Audio  Message
070930  -9 1791  YO8RSL IK2WSA -12 (x2)
042130  -7 1420  VE7RK YO8RSL KN37
132300  -7 2105  YO8RSL II7MGBT -06
132500 -14 1147  YO8RSL EA7KLL -06 (x2)
043100 -11  467  YO8RSL RI1FJL RR73
045300 -17  947  YO8RSL 9A5MTV -10 (x2)
045815 -12 1211  YO8RSL II7MGLE -15
064700 -16 1522  YO8RSL TA2ED -15 (x2)
070400  -9 1951  CS7BHA YO8RSL KN37 (x2)
073630  -4 1750  YO8RSL SM6OPW -13

60m

UTC    dB Audio  Message
020300 -11 1064  YO8RSL <...> R-01
020345 -18 1521  <...> YO8RSL KN37
020400 -12 1064  YO8RSL OE100OEVSV +01
020415 -15 1521  <...> YO8RSL R-13
015215 -15 1669  IQ9USG YO8RSL KN37
015230  -9 1728  YO8RSL IQ9USG +02
015245 -18 1669  IQ9USG YO8RSL R-12
015300  -6 2030  YO8RSL IK4CBO JN54
015300 -13 1728  YO8RSL IQ9USG RR73
015315  -6 1669  IQ9USG YO8RSL 73
015330  -5 2030  YO8RSL IK4CBO JN54 (x3)
015445 -13 1669  IK4CBO YO8RSL RR73
004215 -11 1488  CQ YO8RSL KN37

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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