YO2CK — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving YO2CK, decoded by SO8OO in southeastern Poland. 297 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 10 UTC dates in the available aggregate history. Observed between 2026-06-10 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 297 FT8 messages attributed to YO2CK as the transmitting token by decoded message structure across 10 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (36%), followed by 80 m (28%) and 160 m (23%). Several six-hour UTC windows tied for the largest share (59%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (91%); the estimated median was +4.9 dB.

Overview

297

Messages attributed

UTC dates decoded

Active 15-min windows

+4.9 dB

Estimated median S/N

Bands

160m · 67 80m · 84 40m · 108 20m · 36 10m · 2

First attributed message: 2026-06-10
Last attributed message: 2026-09-20 05:21 UTC

Observed FT8 message patterns

Attributed sample: 297 messages
Active dates: 10 UTC dates
Estimated median S/N: +4.9 dB
Estimated 10th-90th percentile: -8 to +14 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 8, moderate (-15 to -9 dB) 18, strong (≥ -8 dB) 271.

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 YO2CK in decoded directed-looking exchanges:

OZ3AEV · Denmark ×2 S52UF · Slovenia ×2 CT2GQA · Portugal DL3FBI · Fed. Rep. of Germany EB3ENW · Spain IU5AWQ · Italy IU7QKP · Italy LY2BNL · Lithuania OE3KJO · Austria OM3SX · Slovak Republic UR9QQ · Ukraine YO2DSA · Romania

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 YO2CK

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 · 135 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 502 km (approx.)
Last such locator decoded: 2026-09-20 05:21 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	YO2CK S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 04:47	80m	+17 / -	SP9MRP	+18 / -2	7	✓ Full exchange observed
09-20 04:45	80m	+15 / -	K9BAW	- / -	4	Partial capture
09-20 04:36	80m	+10 / -	R6DVS	-10 / -2	3	✓ Closing observed
09-20 04:35	80m	+12 / -1	DO1ID	+17 / -1	4	✓ Full exchange observed
09-20 04:35	80m	+12 / -	EU2ABM	-9 / -17	3	Partial capture
09-20 04:30	80m	+18 / +1	EA3ISZ	-8 / -2	7	✓ Full exchange observed
09-20 04:27	80m	+12 / +4	OK7BB	+2 / -16	4	✓ Full exchange observed
09-20 04:26	80m	+11 / -	KP4PW	- / -15	2	✓ Closing fragment
09-20 04:23	80m	+16 / +4	DO6BLK	-13 / -	3	✓ Closing observed
09-20 04:22	80m	+14 / -7	EC3A	-7 / -4	6	✓ Full exchange observed
09-20 04:21	80m	+11 / -	DO2YJG	- / -15	2	Partial capture
09-20 04:18	80m	+16 / -9	DO1TEM	-10 / -14	4	✓ Full exchange observed
09-20 04:16	80m	+12 / -	GM6URC	-4 / -7	3	✓ Closing observed
09-20 04:13	80m	+16 / -	DO8JB	- / -6	2	✓ Closing fragment
09-20 04:13	80m	- / +8	ON1JP	-13 / -	2	Partial capture
09-20 04:11	80m	+10 / -3	RA6OY	-6 / -1	5	✓ Full exchange observed
09-20 04:07	160m	+6 / -	CT2GQA	-14 / -15	3	✓ Closing observed
09-20 04:05	160m	+12 / -9	EB3ENW	-7 / -12	4	✓ Full exchange observed
09-20 04:03	160m	+10 / -3	IU5AWQ	-12 / -	4	✓ Closing observed
09-20 04:03	160m	+8 / -	DL3FBI	- / -20	2	✓ Closing fragment
09-20 04:01	160m	+9 / -	YO7WCB	-9 / -1	4	✓ Closing observed
09-18 17:36	160m	+3 / -24	UR9QQ	-20 / -6	7	✓ Full exchange observed
09-18 17:36	160m	0 / -	YO2DSA	-22 / -4	4	✓ Closing observed
09-18 17:34	160m	+3 / -	RA6ATZ	- / -	2	Partial capture
09-17 19:10	160m	-10 / -8	OM3SX	-8 / -	3	✓ Closing observed
09-17 19:06	160m	-12 / -	RK6OV	- / -	4	Partial capture
09-17 18:52	160m	-5 / -	SQ2MMX	- / -20	2	Partial capture
09-17 18:49	160m	-6 / -	YU7VK	- / +1	2	✓ Closing fragment
09-17 18:23	160m	+6 / -	OE3KJO	-11 / +3	6	✓ Full exchange observed
09-17 18:19	160m	+6 / -	LY2BNL	-17 / -19	4	✓ Closing observed
09-17 18:15	160m	+4 / -	IU7QKP	- / -12	2	✓ Closing fragment
09-13 06:00	40m	0 / -	F3CJ	- / -11	2	Partial capture
09-13 05:55	40m	+2 / -	R2PX	- / -12	2	✓ Closing fragment
09-13 05:55	40m	+1 / -	DL9KM	0 / -3	8	Partial capture
09-13 05:55	40m	+4 / -	F4LNM	-11 / -12	5	Partial capture
09-13 05:53	40m	+4 / -	UA4FKT	- / -9	2	✓ Closing fragment
09-13 05:51	40m	+2 / -9	F1PBZ	-7 / -5	5	✓ Full exchange observed
09-12 06:21	40m	+6 / -12	R2AVL	-15 / -6	4	✓ Full exchange observed
09-12 06:20	40m	- / -11	F1PBZ	-12 / -	4	Partial capture
09-12 06:18	40m	+1 / -	ZU5WTP/R	- / -18	2	Partial capture
09-12 06:17	40m	0 / -	M0PEI	- / -15	2	Partial capture
09-12 06:11	40m	+6 / -3	HA3TBL	-4 / -1	5	✓ Full exchange observed
09-12 05:59	40m	+6 / -	CT2HEX	- / -11	2	✓ Closing fragment
09-12 05:56	40m	+10 / -10	DH7TS	+5 / 0	5	✓ Full exchange observed
09-12 05:55	40m	+9 / -	CT1DHR	- / -4	3	✓ Closing fragment
09-12 05:44	40m	- / 0	F1PBZ	-10 / -	2	Partial capture
09-12 05:40	40m	+2 / +7	IK4TVP	-6 / +5	5	✓ Full exchange observed
09-12 05:39	40m	+4 / -7	ON1DGN	-15 / -1	3	✓ Full exchange observed
09-12 05:37	40m	-3 / -	R1BDX	- / -12	2	✓ Closing fragment
09-12 05:33	40m	-5 / -1	YO4GIY	-5 / +3	4	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
044530 +14 1067  K9BAW YO2CK KN15 (x3)
044700 +19 1067  CQ YO2CK KN15
044715 +17 1154  YO2CK SP9MRP JO90
044730 +17 1067  SP9MRP YO2CK -02
044745 +16 1154  YO2CK SP9MRP JO90
044800 +19 1067  SP9MRP YO2CK +00
044815 +20 1154  YO2CK SP9MRP R+14
044830 +15 1067  SP9MRP YO2CK RR73
044845 +20 1155  YO2CK SP9MRP 73
050100  +6 1042  CQ YO2CK KN15                         a1 (x4)

160m

UTC    dB Audio  Message
040400 +10 1074  DL3FBI YO2CK RR73
040445 -16 1515  YO2CK IU5AWQ R-03
040500 +10 1074  IU5AWQ YO2CK RR73
040515 -12 1515  YO2CK IU5AWQ 73
040530 +13 1074  EB3ENW YO2CK -12
040545  -8  701  YO2CK EB3ENW R-09
040600 +11 1074  EB3ENW YO2CK RR73
040615  -6  701  YO2CK EB3ENW 73
040700  +9 1074  CQ YO2CK KN15
040730  +6 1074  CT2GQA YO2CK -15 (x2)
040815 -14 1074  YO2CK CT2GQA 73
040830  +9 1074  CQ YO2CK KN15 (x3)

40m

UTC    dB Audio  Message
055600  +1 1948  R2PX YO2CK RR73
055615  -2 1185  YO2CK DL9KM JN68 (x2)
055700  +6 1948  F4LNM YO2CK -12
055715  +4 1186  YO2CK DL9KM JN68
055730  +1 1948  F4LNM YO2CK -12
055745  +8 1186  YO2CK DL9KM JN68
055800  +5 1948  CQ YO2CK KN15
055815 -11 1950  YO2CK F4LNM JN09
055815  +5 1186  YO2CK DL9KM JN68
055830  +1 1948  DL9KM YO2CK -03
055930  -2 1948  CQ YO2CK KN15 (x2)
060030  +2 1948  F3CJ YO2CK -11 (x2)

20m

UTC    dB Audio  Message
104415 -18 1913  RA9CUU YO2CK KN15 (x3)
105330 -21 1905  YO2CK R6DJR -04 (x2)
105630 -17  949  YO2CK IW1PVB JN44 (x4)

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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