CB1K — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Chile Most frequent locator attributed to this token: FG49

Receiver-side FT8 activity involving CB1K, decoded by SO8OO in southeastern Poland. 47 FT8 messages attributed to this token as transmitter, on 20m, 10m, across 3 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-10-17.

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 47 FT8 messages attributed to CB1K as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (64%), followed by 10 m (36%). Several six-hour UTC windows tied for the largest share (64%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-11 dB

Estimated median S/N

Bands

20m · 30 10m · 17

First attributed message: 2026-06-11
Last attributed message: 2026-10-17 16:47 UTC

Observed FT8 message patterns

Attributed sample: 47 messages
Active dates: 3 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -16 to -5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 27, 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 CB1K in decoded directed-looking exchanges:

RI1FJL · Franz Josef Land ×2 CR7BUW · Portugal KC2SKM · United States SP5MNT · Poland SV1HFE · Greece SV2CLJ · Greece XE2SSB · Mexico DG8GAE · Fed. Rep. of Germany EA1AXX · Spain P40AA · Aruba R1YY · European Russia RA3TKS · European Russia

Most frequent locator attributed to CB1K

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: FG49 · 4 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 11,931 km (approx.)
Last such locator decoded: 2026-10-17 16:40 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	CB1K S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-17 16:43	10m	-12 / -	XE2SSB	- / -16	2	✓ Closing fragment
10-17 16:40	10m	- / -3	CR7BUW	-12 / -	2	✓ Closing fragment
10-17 16:36	10m	-13 / -	9A5AVL	- / -14	2	Partial capture
10-17 16:24	10m	-15 / -	SP5MNT	- / -13	2	✓ Closing fragment
10-17 16:22	10m	-15 / -	CR7BUW	-12 / -15	2	Partial capture
10-17 05:55	40m	- / -14	SP3QDM	0 / -	6	✓ Closing fragment
10-17 05:45	40m	- / -18	IK5PWQ	+6 / -	3	Partial capture
10-17 05:43	40m	- / -19	G4IFX	+8 / -	3	Partial capture
10-17 05:41	40m	- / -14	UA3DIB	+6 / -	3	✓ Closing fragment
10-17 05:37	40m	- / -17	IU3ACL	-4 / -	11	✓ Closing fragment
10-17 05:36	40m	- / -11	ES6RMR	-9 / -	7	✓ Closing fragment
10-17 05:36	40m	- / -18	IZ2AMW	+19 / -	3	✓ Closing fragment
10-17 05:33	40m	- / -	PA3EZB	-7 / -	2	Partial capture
10-17 05:32	40m	- / -26	RA5BQ	-7 / -	4	✓ Closing fragment
10-17 05:30	40m	- / -	PA3EZB	-1 / -	2	Partial capture
10-17 05:25	40m	- / -9	F4DIA	-7 / -	3	✓ Closing fragment
10-17 05:19	40m	- / -24	ES2AJ	+8 / -	3	✓ Closing fragment
10-17 05:17	40m	- / -18	RA3DAD	-7 / -	3	✓ Closing fragment
08-29 02:36	20m	-8 / -	EA5HM	- / -19	3	Partial capture
08-29 02:35	20m	-8 / -	SP4NKU	- / -15	2	✓ Closing fragment
08-29 02:34	20m	-8 / -	UA9SAV	- / -12	2	✓ Closing fragment
08-29 02:28	20m	-6 / -	RI1FJL	- / -12	10	✓ Closing fragment
08-25 05:55	20m	- / -4	DG8GAE	-5 / -	3	✓ Closing fragment
08-16 07:01	20m	- / -	DL3LBK	-4 / -	4	Partial capture
08-16 06:56	20m	- / -16	SP3DOF	-13 / -	4	✓ Closing fragment
08-16 06:43	20m	- / -	I2XIP	+1 / -	3	Partial capture
08-07 22:36	20m	- / -	DH2RL	-7 / -	4	Partial capture
08-06 06:47	20m	- / -17	EA1AXX	-6 / -	2	✓ Closing fragment
08-06 06:43	20m	- / -13	G8VVY	-9 / -	3	Partial capture
08-06 04:39	20m	- / -5	HB9HVG	-16 / -	2	Partial capture
08-06 04:37	20m	- / 0	UA9AX	-2 / -	4	Partial capture
08-06 04:11	20m	- / -	RA3TKS	-5 / -	3	✓ Closing fragment
08-06 04:01	20m	- / -12	RA3TKS	-11 / -	3	Partial capture
08-06 04:00	20m	- / -4	R1YY	-3 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
054315 +13 2646  CB1K G4IFX IO91
054345  -2  782  CB1K IU3ACL RR73
054345  +3 2648  CB1K G4IFX IO91 (x2)
054545  +5 2356  CB1K IK5PWQ JN53 (x3)
054945 -13 2602  CB1K EB3DIM -17
055545  +1 2418  CB1K SP3QDM JO82 (x6)
060100  -9  348  CB1K EA8WU RR73

10m

UTC    dB Audio  Message
163615 -13  831  9A5AVL CB1K FG49
163645 -14  831  SV2CLJ CB1K RR73
163700  -9 2496  CB1K CR7BUW IM58
163715 -19  831  7Q6M CB1K FG49
163745 -13  831  9A5AVL CB1K R-14
163945 -16  831  YT1LOG CB1K -16
164000 -12 2496  CB1K CR7BUW R-03
164015 -17  831  7Q6M CB1K FG49
164100 -12 2496  CB1K CR7BUW 73
164345 -12  831  XE2SSB CB1K R-16
164400  -3 1510  CB1K CT7AUT IM67
164415 -12  831  XE2SSB CB1K 73
164515 -14  831  LA7HJA CB1K R-15
164645 -16  831  KC2SKM CB1K RR73
164745 -16  831  OM1US CB1K -16

20m

UTC    dB Audio  Message
022945  -3  816  RI1FJL CB1K RR73 (x8)
023415  -9  817  UA9SAV CB1K -12 (x2)
023515  -9  817  SP4NKU CB1K -15 (x2)
023615  -9  817  EA5HM CB1K -19 (x3)

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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