KC9USW — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Locator transmitted in a decoded message: EN70

Receiver-side FT8 activity involving KC9USW, decoded by SO8OO in southeastern Poland. 479 related FT8 messages, 47 CQ messages, observed on 20m, 10m, across 14 UTC dates. Heard between 2026-06-10 and 2026-07-27.

These are automated observations at the SO8OO receiver, not the station's official logbook. Times are UTC. Decoder S/N describes messages received at SO8OO; inferred entity and location data may be inaccurate for portable, remote or special-event operation.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee

Overview

479

Related messages

CQ messages

UTC dates heard

-9 dB

Mean decoder S/N

Bands

20m 10m

First seen: 2026-06-10
Last seen: 2026-07-27 00:51 UTC

Frequent QSO partners observed at SO8OO

Stations KC9USW worked most often, as logged from our receiver:

YU1LD · Serbia JA8DKJ · Japan N1KY · United States DL9KM · Fed. Rep. of Germany WA2HIP · United States RK4FF · European Russia RN3DN · European Russia PD1HPB · Netherlands OD5KU · Lebanon RN6MA · European Russia DB1SN · Fed. Rep. of Germany RA6OY · European Russia

Activity Heatmap

Locator transmitted by KC9USW

Approximate centre of EN70, decoded 2026-07-27 01:56 UTC. A transmitted locator is not proof of the operator's permanent location.

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	KC9USW S/N	Counterpart	Counterpart S/N	Msgs	Capture
07-27 02:08	20m	- / -12	R8CIS	-17 / -	2	Partial capture
07-27 01:19	20m	-6 / -	AE4RC	- / -7	2	Partial capture
07-27 01:17	20m	-8 / -	WA2HIP	- / -13	2	✓ Closing fragment
07-27 01:12	20m	-9 / -	RA6OY	- / -18	2	✓ Closing fragment
07-26 23:50	20m	- / -	5Z4VJ	-21 / -	3	Partial capture
07-26 23:49	20m	- / -	WV2B	-4 / -	3	Partial capture
07-26 21:42	20m	- / -	LB0TH	-8 / -	2	Partial capture
07-23 05:18	20m	- / -	LZ3BS	-2 / -	2	Partial capture
07-23 05:15	20m	- / -	YO3FFE	-16 / -	9	Partial capture
07-23 04:57	20m	- / -	RA3RDN	-5 / -	2	Partial capture
07-20 23:32	20m	- / -10	DL9KM	-15 / -	5	✓ Closing fragment
07-20 23:28	20m	- / -16	YU1LD	+1 / -	6	✓ Closing fragment
07-20 23:22	20m	- / -	RX9ABI	-10 / -	2	Partial capture
07-20 22:56	20m	- / -13	PD0DDA	-12 / -	4	Partial capture
07-20 22:18	20m	- / -	TA1CCM	-18 / -	2	Partial capture
07-19 08:29	20m	- / -5	PD0HLA	-15 / -	2	Partial capture
07-19 08:29	20m	- / -	DJ7JB	+3 / -	5	Partial capture
07-19 08:29	20m	- / -16	OZ9FF	-13 / -	8	Partial capture
07-19 08:29	20m	- / -	PD1ADA	-19 / -	6	Partial capture
07-19 08:27	20m	- / -	PD1PSR	-22 / -	2	Partial capture
07-19 08:25	20m	- / -	M0PBG	-8 / -	2	Partial capture
07-19 08:21	20m	- / -	OE6TXW	-12 / -	3	Partial capture
07-19 08:19	20m	- / -	DL1R	-1 / -	7	Partial capture
07-16 06:28	20m	- / +5	F5LOW	-16 / -	2	✓ Closing fragment
07-16 05:26	20m	- / -	DB1SO	-10 / -	2	Partial capture
07-16 05:22	20m	- / -17	OD5KU	0 / -	4	✓ Closing fragment
07-16 05:20	20m	- / -	OE9KFV	+1 / -	2	Partial capture
07-16 05:06	20m	- / -22	HB9GNH	-4 / -	7	Partial capture
07-13 06:01	20m	- / -	PD1ADA	-20 / -	4	Partial capture
07-13 06:01	20m	- / -14	DG1KDD	-9 / -	2	Partial capture
07-13 05:56	20m	- / -	F5IXN	-8 / -	2	Partial capture
07-13 05:54	20m	- / -20	SP7XIF	-3 / -	2	Partial capture
07-13 05:54	20m	- / -14	DG1KDD	-1 / -	2	Partial capture
07-13 05:45	20m	- / -	OK1KM	-9 / -	12	Partial capture
07-13 05:41	20m	- / -14	DG1KDD	-15 / -	3	Partial capture
07-13 05:33	20m	- / -	DL3VZL	+10 / -	5	Partial capture
07-13 05:31	20m	- / -	LZ2XF	-8 / -	2	Partial capture
07-13 05:30	20m	- / -	OE9KFV	-2 / -	5	Partial capture
07-13 05:28	20m	- / -10	UA3RAU	-14 / -	3	Partial capture
07-13 05:26	20m	- / -	S51CC	-5 / -	2	Partial capture
07-13 05:26	20m	- / +7	PA3EVY	-8 / -	2	Partial capture
07-13 05:24	20m	- / -	PA2CV	-11 / -	3	Partial capture
07-13 05:23	20m	- / -11	IV3GOW	-4 / -	7	Partial capture
07-13 05:22	20m	- / -	RX3ASQ	-4 / -	2	Partial capture
07-13 05:21	20m	- / -	IK4RVY	-12 / -	6	Partial capture
07-13 05:18	20m	- / -	RV3QI	-11 / -	2	Partial capture
07-13 05:17	20m	- / -	OD5KU	0 / -	2	Partial capture
07-13 05:17	20m	- / -	RX3ASQ	-4 / -	2	Partial capture
07-13 05:15	20m	- / -	IV3GOW	-2 / -	5	Partial capture
07-13 04:24	20m	- / -	HB9FMC	-24 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
012330  -9  322  CQ KC9USW EN70 (x2)
012900 -11  321  DJ7XY KC9USW -17
013300 -10  319  CQ KC9USW EN70 (x2)
014130 -21 2179  W5DAH KC9USW +14
014400 -21 2179  CQ KC9USW EN70                        a1 (x5)
020815 -20 1614  KC9USW R8CIS MO06 (x2)
020845  -7 3077  KC9USW UB8CPH -09
025145 -20 1988  KC9USW R3UAX LO17

10m

UTC    dB Audio  Message
191615  +5  491  KC9USW IK4LZH JN54 (x4)
192145  +1 2890  KC9USW DF8DR JO31 (x2)

Decoder S/N history by band

Daily averages across messages associated with this profile as decoded at SO8OO.