TK/4O7CC — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Corsica

Receiver-side FT8 activity involving TK/4O7CC, decoded by SO8OO in southeastern Poland. 900 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-09-14 and 2026-09-17.

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 900 FT8 messages attributed to TK/4O7CC as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (43%), followed by 80 m (35%) and 160 m (14%). Most decodes (63%) fell within the six-hour window 19:00-01:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (66%); the estimated median was -4 dB.

Overview

900

Messages attributed

UTC dates decoded

Active 15-min windows

-4 dB

Estimated median S/N

Bands

160m · 123 80m · 316 60m · 72 40m · 389

First attributed message: 2026-09-14
Last attributed message: 2026-09-17 19:42 UTC

Observed FT8 message patterns

Attributed sample: 900 messages
Active dates: 4 UTC dates
Estimated median S/N: -4 dB
Estimated 10th-90th percentile: -17 to +8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 108, moderate (-15 to -9 dB) 201, strong (≥ -8 dB) 591.

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 TK/4O7CC in decoded directed-looking exchanges:

SX48JM · Greece ×12 OT26B · Belgium ×7 3Z25AB · Poland ×2 SP2DTW · Poland ×2 Z335MK · North Macedonia ×2 DK5WL · Fed. Rep. of Germany EA3Y · Spain UZ5CA · Ukraine 8Z96ND · Saudi Arabia DG4LXM · Fed. Rep. of Germany EA1HFI · Spain HA3HZ · Hungary

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.

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	TK/4O7CC S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-17 22:23	160m	- / -16	EW6FL	+5 / -	4	Partial capture
09-17 22:21	160m	- / -17	RV6AVU	+4 / -	3	Partial capture
09-17 22:18	160m	- / -12	OE3OOG	+7 / -	2	Partial capture
09-17 21:32	80m	- / -6	IN3XSV	-6 / -	2	Partial capture
09-17 21:21	80m	- / +6	DL6MRM	-6 / -	3	Partial capture
09-17 21:19	80m	- / -	YL2IV	-2 / -	2	Partial capture
09-17 21:06	60m	- / -6	OT4R	-16 / -	2	Partial capture
09-17 21:05	80m	- / -	DO9BAU	+3 / -	11	Partial capture
09-17 20:57	80m	- / -	IS0LLL	-24 / -	2	Partial capture
09-17 20:53	60m	- / -12	GM4YTD	-9 / -	2	Partial capture
09-17 20:48	80m	- / -6	DK2FM	+9 / -	4	Partial capture
09-17 20:41	80m	- / -11	SQ5PIK	+6 / -	2	Partial capture
09-17 20:15	80m	- / -	DO8JB	-22 / -	2	Partial capture
09-17 20:02	80m	- / -	DO9BAU	-1 / -	13	Partial capture
09-17 19:55	60m	- / -	OH6EPM	-14 / -	2	Partial capture
09-17 19:50	160m	- / -7	DL1NEO	+4 / -	2	Partial capture
09-17 19:50	160m	- / -	OK2BUZ	+19 / -	2	Partial capture
09-17 19:48	160m	- / -	SQ5N	-11 / -	5	Partial capture
09-17 19:43	80m	- / -	DO8JB	-16 / -	3	Partial capture
09-17 19:42	60m	-12 / +10	OZ0A	0 / 0	3	Partial capture
09-17 19:28	60m	- / -	DL1MST	-4 / -	2	Partial capture
09-17 19:16	80m	- / 0	DO8JB	-11 / -	3	Partial capture
09-17 19:08	160m	- / -14	DO9BAU	-22 / -	2	Partial capture
09-17 18:59	80m	- / -	SP7ROM	+4 / -	2	Partial capture
09-17 18:45	80m	- / +1	YO2MTG	+6 / -	2	Partial capture
09-17 18:43	80m	- / -14	DO8JB	-11 / -	3	Partial capture
09-17 18:42	80m	- / 0	EV1R	+14 / -	2	Partial capture
09-17 18:33	80m	- / -	PH7GD	-9 / -	4	Partial capture
09-17 18:10	160m	- / -2	RT2P	-4 / -	2	Partial capture
09-17 18:08	160m	- / -21	DL1ET	-8 / -	3	Partial capture
09-17 18:07	80m	- / +4	IN3XSV	-4 / -	2	Partial capture
09-17 18:06	80m	- / +1	SP8OBQ	+4 / -	2	Partial capture
09-17 18:01	160m	- / -	RA3ZH	-16 / -	2	Partial capture
09-17 18:00	80m	- / -	OK1YQ	+22 / -	2	Partial capture
09-17 18:00	80m	- / -	F5OIH	-12 / -	2	Partial capture
09-17 17:50	160m	- / -21	UI6A	-8 / -	4	Partial capture
09-17 17:41	160m	- / -16	RY9C	-12 / -	3	Partial capture
09-17 17:27	80m	- / -	IK6DLK	+4 / -	2	Partial capture
09-17 17:25	80m	- / -	DO8JB	-14 / -	4	Partial capture
09-17 17:24	160m	- / -	RN4LP	-18 / -	2	Partial capture
09-17 17:21	160m	- / -14	OM3SX	+7 / -	3	Partial capture
09-17 17:08	80m	- / -21	UA3QNA	+17 / -	3	Partial capture
09-17 17:05	80m	- / -16	LY2SA	+20 / -	2	Partial capture
09-17 16:44	160m	- / -12	OM3SX	0 / -	2	Partial capture
09-17 16:41	160m	- / -	R2SDZ	-8 / -	3	Partial capture
09-17 16:41	160m	- / -18	UI6A	-13 / -	3	Partial capture
09-17 16:37	160m	- / -	OM3SX	+1 / -	6	Partial capture
09-17 05:59	80m	- / -	SP2BZ	+1 / -	3	Partial capture
09-17 05:58	40m	- / -	RA3YAO	-12 / -	2	Partial capture
09-17 05:50	40m	- / -9	US2UM	0 / -	4	Partial capture

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
194945 -10 2289  TK/4O7CC SQ5N KO02 (x2)
195045 +19 2695  TK/4O7CC OK2BUZ
195045  +4  703  TK/4O7CC DL1NEO JN59
195115 +19 2695  TK/4O7CC OK2BUZ
195115  +3  703  TK/4O7CC DL1NEO R-07
221815  +6  895  TK/4O7CC OE3OOG JN87 (x2)
222115  +7  416  TK/4O7CC RV6AVU KN94 (x3)
222345  +2 1222  TK/4O7CC EW6FL KO45 (x4)

80m

UTC    dB Audio  Message
210930  +2 2402  TK/4O7CC DO9BAU JO62 (x3)
211800 +10 1752  TK/4O7CC SQ5PIK -20
211915  +2 2566  TK/4O7CC YL2IV KO06 (x2)
212145 -10 2506  TK/4O7CC DL6MRM JO52 (x3)
213230  -6 1503  TK/4O7CC IN3XSV JN55 (x2)
214100 -12 1754  TK/4O7CC ON4WIY R-09
214330  +8 1751  TK/4O7CC SQ5PIK -20
215715 +11 2567  TK/4O7CC IT9KHI R-14
221030  -2  367  TK/4O7CC Z33PB -16

60m

UTC    dB Audio  Message
182000  +5 1390  TK/4O7CC YT2ZE -07
191745  +7  986  TK/4O7CC SP8AOV R-06
192800  -3  393  TK/4O7CC DL1MST JO30 (x2)
194230  -2  538  TK/4O7CC OZ0A JO55
194245 -12  537  OZ0A TK/4O7CC +00
194300  +3  538  TK/4O7CC OZ0A R+10
194330 -22 1449  TK/4O7CC DL1BJL JO33
195530 -12 2109  TK/4O7CC OH6EPM KP12 (x2)
202245  +3  996  TK/4O7CC PA3DP -07
205315  -8  554  TK/4O7CC GM4YTD IO74 (x2)
210615 -13 1453  TK/4O7CC OT4R -06 (x2)

40m

UTC    dB Audio  Message
032445 -15  641  TK/4O7CC EB2EMZ IN83
032515  +0  642  TK/4O7CC UA4FKT LO23 (x2)
034130 -24 1482  TK/4O7CC N4DWD R-12
054200  +1  383  TK/4O7CC F6FTB JN27 (x4)
055045  +0 2232  TK/4O7CC US2UM KO50 (x4)
055615  -5 1943  TK/4O7CC RA3YAO KO73 (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.

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