YO8RCA — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving YO8RCA, decoded by SO8OO in southeastern Poland. 242 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 20 UTC dates in the available aggregate history. Observed between 2026-06-18 and 2026-09-20.

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 242 FT8 messages attributed to YO8RCA as the transmitting token by decoded message structure across 20 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (64%), followed by 80 m (17%) and 20 m (16%). Most decodes (72%) fell within the six-hour window 03:00-09:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (88%); the estimated median was +1 dB.

Overview

242

Messages attributed

UTC dates decoded

Active 15-min windows

+1 dB

Estimated median S/N

Bands

80m · 41 60m · 6 40m · 156 20m · 39

First attributed message: 2026-06-18
Last attributed message: 2026-09-20 06:55 UTC

Observed FT8 message patterns

Attributed sample: 242 messages
Active dates: 20 UTC dates
Estimated median S/N: +1 dB
Estimated 10th-90th percentile: -9 to +9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 8, moderate (-15 to -9 dB) 20, strong (≥ -8 dB) 214.

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 YO8RCA in decoded directed-looking exchanges:

EW2ZC · Belarus ×2 IN3IZQ · Italy ×2 US2YW · Ukraine ×2 ZL3IO · New Zealand ×2 F4ILK · France F6ASS · France PD0HLA · Netherlands Z34K · North Macedonia 7X2KF · Algeria A61CK · United Arab Emirates DB4MLA · Fed. Rep. of Germany DD0AM · 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 YO8RCA

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 · 8 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 468 km (approx.)
Last such locator decoded: 2026-09-20 06:47 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	YO8RCA S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 06:53	40m	-3 / +6	RC2Y	-15 / -2	6	✓ Full exchange observed
09-20 06:52	40m	+6 / -10	I4WQH	-2 / -15	5	✓ Full exchange observed
09-20 06:49	40m	-2 / -	RC3DN	- / -11	2	Partial capture
09-20 06:48	40m	+5 / +2	US2YW	+10 / -4	8	✓ Full exchange observed
09-20 06:47	40m	+8 / -4	OK2PHI	+2 / -10	5	✓ Full exchange observed
09-20 06:44	40m	-3 / -	YO1PIR	- / -18	3	✓ Closing fragment
09-20 06:42	40m	-4 / -	RC3DN	- / -11	2	Partial capture
09-20 06:37	40m	-5 / -14	PD1HPB	-15 / -22	9	✓ Full exchange observed
09-20 06:35	40m	-2 / -	DJ0MAB	- / -12	4	Partial capture
09-20 06:32	40m	0 / -4	SN100PKP	-8 / -12	2	Partial capture
09-20 06:30	40m	0 / -	RC3DN	- / -8	4	Partial capture
09-20 06:28	40m	+7 / -	YO2UKG	-5 / -	2	✓ Closing observed
09-20 06:26	40m	+7 / -8	OZ1KZX	-5 / -15	4	✓ Full exchange observed
09-20 05:53	40m	+5 / -3	SQ8ECJ	-7 / 0	5	✓ Full exchange observed
09-20 05:52	40m	+4 / -18	YO8XFU	+7 / -11	4	✓ Full exchange observed
09-20 05:25	40m	+2 / -	DG4HAD	- / -21	4	Partial capture
09-20 05:22	40m	-9 / -	SV9FBT	- / -17	4	Partial capture
09-20 05:21	40m	-8 / -7	YO9BZK	-4 / -16	4	✓ Full exchange observed
09-20 05:17	40m	- / +3	YO7CKQ	+10 / -	2	✓ Closing fragment
09-19 09:05	40m	+6 / -9	SO100PKP	+2 / -19	2	Partial capture
09-19 09:00	40m	-1 / -	YO8CNA	-6 / -6	5	✓ Full exchange observed
09-19 05:51	40m	-2 / -13	F4DIA	-5 / -19	6	Partial capture
09-19 05:46	80m	+7 / -	EW2ZC	- / -22	2	✓ Closing fragment
09-19 05:45	40m	- / -	UA3POG	-19 / -	2	Partial capture
09-19 05:44	40m	- / -	F5RRS	-3 / -	4	Partial capture
09-19 05:43	40m	+10 / 0	DL7ARV	+2 / -14	6	✓ Full exchange observed
09-19 05:42	40m	+4 / -5	YO6LM	+12 / -13	4	✓ Full exchange observed
09-19 05:20	40m	+1 / +5	IK4TVP	0 / -8	3	Partial capture
09-19 05:20	40m	+2 / +4	YO3GNF	-2 / -11	7	✓ Full exchange observed
09-19 05:19	40m	+13 / -	ZL3IO	-1 / -15	3	✓ Closing observed
09-19 05:13	40m	-8 / -15	IN3IZQ	-17 / -	3	✓ Closing observed
09-19 04:56	40m	- / -	UA4FKT	-7 / -	2	Partial capture
09-18 19:54	40m	- / -12	RD4AAK	-11 / -	5	✓ Closing fragment
09-18 19:40	40m	-14 / -	SQ3LMR	- / -	3	Partial capture
09-16 15:16	40m	+7 / 0	SQ9SET	-6 / -9	6	✓ Closing observed
09-16 14:18	40m	-6 / -	IN3IZQ	- / -18	5	Partial capture
09-16 06:39	40m	- / -11	GJ0KYZ	-12 / -	3	Partial capture
09-16 06:38	40m	-7 / -	YO2DSA	- / -14	2	✓ Closing fragment
09-16 06:36	40m	-4 / -13	TK5NJ	-17 / -	3	✓ Closing observed
09-16 06:30	40m	-9 / -	F4BNZ	- / -20	4	Partial capture
09-08 08:51	40m	-3 / -	SP9DAT	- / -16	4	Partial capture
09-04 17:53	40m	+5 / +1	RW6B	-10 / -20	7	✓ Full exchange observed
09-04 17:51	40m	+6 / +8	F8FUA	+3 / -12	4	✓ Full exchange observed
09-04 17:49	40m	+4 / -	EG3PDA	- / -22	2	✓ Closing fragment
09-04 17:45	40m	+9 / -	DA1LEO	+4 / -11	2	Partial capture
09-04 17:45	40m	+6 / -	DL9KM	+4 / -11	10	Partial capture
09-04 17:43	40m	+8 / -	EU6ABH	- / -17	2	✓ Closing fragment
09-04 17:40	40m	+6 / -	EX7CQ	- / -20	6	Partial capture
08-31 07:03	20m	0 / -	VK3BOY	- / -13	3	Partial capture
08-29 15:49	20m	- / +1	F5PBG	-3 / -	4	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
065100  +8  494  US2YW YO8RCA -04
065115  +8 1912  YO8RCA US2YW R+02
065130  -1 1912  US2YW YO8RCA RR73
065145  +6 1912  YO8RCA US2YW 73
065230  +5  318  I4WQH YO8RCA -15 (x2)
065315  -3  318  YO8RCA I4WQH R-10
065330  +6  318  I4WQH YO8RCA RR73
065345 -18 1818  YO8RCA RC2Y KO73
065345  -2  318  YO8RCA I4WQH 73
065415 -16 1818  YO8RCA RC2Y KO73
065430  -4 1818  RC2Y YO8RCA -02
065445 -13 1818  YO8RCA RC2Y R+06
065500  -2 1818  RC2Y YO8RCA RR73
065515 -13 1818  YO8RCA RC2Y 73

80m

UTC    dB Audio  Message
034845  +9  966  SP5GEO YO8RCA RR73
034900  +9  965  YO8RCA SP5GEO 73
034945 +10 1448  YO8RCA YO3OBB R+09
035000  +1 1448  YO3OBB YO8RCA RR73
035015  +3 1448  YO8RCA YO3OBB 73
035100  +6 1449  US2YW YO8RCA -10 (x4)
035300  -2 1631  IN3IZQ YO8RCA -23 (x2)
035345  -9 1630  YO8RCA IN3IZQ R-13
035400  +3 1631  IN3IZQ YO8RCA RR73
054615  +8 2382  EW2ZC YO8RCA -22 (x2)

20m

UTC    dB Audio  Message
132945  -7 2571  YO8RCA JR6EZE R-17
133000  -8 2572  JR6EZE YO8RCA RR73
133015  -3 2571  YO8RCA JR6EZE 73
133100 -13 2323  OK5AG/P YO8RCA -14 (x2)
082345  -7 2081  YO8RCA F4IVG R-08 (x2)
154915  -8 1174  YO8RCA F5PBG IN78 (x4)
155300 -10 1379  YO8RCA JA4FKX 73
070345  -4 1468  VK3BOY YO8RCA -13 (x3)

10m

UTC    dB Audio  Message
093230 -11 1003  YO8RCA RR73; DF5DY <...> -04
075115  +1 2661  YO8RCA PD0HLA 73
131800 -12 2522  YO8RCA F4ILK R-03 (x2)
074745 -13 1097  YO8RCA F6ASS R-05 (x2)
092930  +9  556  YO8RCA Z34K R+15 (x2)

60m

UTC    dB Audio  Message
092915  -1  941  CQ YO8RCA KN37 (x2)
040245  +1 2125  YO3CWC YO8RCA -01 (x2)
040315 -24 1901  YO8RCA DK7ZT -09
040400  +7 2390  US2YW YO8RCA -12 (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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