KJ4SKO — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EL98

Receiver-side FT8 activity involving KJ4SKO, decoded by SO8OO in southeastern Poland. 46 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-08-27.

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 46 FT8 messages attributed to KJ4SKO as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (43%), followed by 80 m (35%) and 40 m (20%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-13 dB

Estimated median S/N

Bands

80m · 16 60m · 1 40m · 9 20m · 20

First attributed message: 2026-06-09
Last attributed message: 2026-08-27 02:22 UTC

Observed FT8 message patterns

Attributed sample: 46 messages
Active dates: 7 UTC dates
Estimated median S/N: -13 dB
Estimated 10th-90th percentile: -24 to -3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 18, moderate (-15 to -9 dB) 16, strong (≥ -8 dB) 12.

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 KJ4SKO in decoded directed-looking exchanges:

EA7LHN · Spain R6DWD · European Russia M0GQC · England M8KKH · England 4X5MZ · Israel DF3IS · Fed. Rep. of Germany F4DIA · France F5RRS · France HZ1TT · Saudi Arabia LA8ENA · Norway M0DRN · England MW0USK · Wales

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 KJ4SKO

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: EL98 · 16 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,464 km (approx.)
Last such locator decoded: 2026-08-27 02:21 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	KJ4SKO S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-01 00:45	40m	- / -16	DF3IS	-3 / -	2	✓ Closing fragment
08-27 02:23	40m	- / -	UB6OFG	+11 / -	3	Partial capture
08-27 02:21	40m	-12 / -	W7PK	- / -3	3	✓ Closing fragment
08-27 02:17	40m	-12 / -	EI9KF	- / -	2	Partial capture
08-08 18:40	10m	- / -5	EA7LHN	-1 / -	4	✓ Closing fragment
08-04 02:37	60m	- / -6	F5MYK	-13 / -	2	✓ Closing fragment
08-04 02:26	60m	-20 / -12	TA1BM	-1 / -7	6	✓ Full exchange observed
08-04 02:25	60m	- / -17	SP5EXA	-12 / -	2	✓ Closing fragment
08-04 02:11	80m	- / -18	UT5ZC	+12 / -	2	✓ Closing fragment
08-04 02:04	80m	-22 / -4	K4YT	0 / -	4	✓ Closing observed
07-31 22:31	20m	- / -14	M8KKH	+2 / -	2	✓ Closing fragment
07-20 00:11	40m	- / -9	G0TIX	-17 / -	3	Partial capture
07-17 02:35	80m	- / -19	OM1II	+15 / -	3	✓ Closing fragment
07-16 01:27	40m	- / -13	4X5MZ	-18 / -	3	✓ Closing fragment
07-12 01:26	40m	- / -9	LA8ENA	-14 / -	2	✓ Closing fragment
07-12 00:47	40m	- / -14	R6LPF	-10 / -	2	✓ Closing fragment
07-11 00:20	40m	- / -6	MW0USK	0 / -	2	✓ Closing fragment
07-11 00:16	40m	- / -	R6LPF	-14 / -	2	Partial capture
07-09 01:26	80m	-18 / -	EA5HM	- / -	2	Partial capture
07-05 04:19	40m	- / -16	YO4NF	-13 / -	2	Partial capture
07-05 02:47	80m	-14 / -	K2L	- / +10	2	✓ Closing fragment
07-05 02:36	80m	- / -19	F8NHF	+9 / -	9	✓ Closing fragment
07-05 02:35	80m	- / -	DL3MIB	+6 / -	7	Partial capture
07-05 02:34	80m	- / -13	SP3PLD	+26 / -	2	✓ Closing fragment
07-05 02:26	80m	- / -	EC5M	-2 / -	3	✓ Closing fragment
07-05 02:20	80m	-20 / -10	9A5E	+13 / -15	5	✓ Full exchange observed
07-05 01:15	80m	-18 / -	K2H	- / -5	2	Partial capture
06-29 01:18	40m	- / -19	F5RRS	-15 / -	3	✓ Closing fragment
06-29 01:16	40m	- / 0	F4DIA	-6 / -	2	✓ Closing fragment
06-27 01:24	80m	- / -19	DK7ZT	+9 / -	2	Partial capture
06-27 01:18	80m	-24 / -17	DK1AQ	+10 / -21	14	✓ Full exchange observed
06-27 01:03	80m	- / -25	DK7ZT	+8 / -	2	Partial capture
06-27 01:00	80m	- / -13	EA5CRC	0 / -	6	✓ Closing fragment
06-27 00:23	40m	- / -15	SV2HTW	-6 / -	2	✓ Closing fragment
06-25 01:14	40m	- / -13	HZ1TT	-20 / -	2	✓ Closing fragment
06-25 00:29	40m	- / -11	OM0RX	-3 / -	6	Partial capture
06-25 00:27	40m	- / -4	M0DRN	-19 / -	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
001215 -18 1335  KJ4SKO G0TIX RRR (x2)
004200  -9  596  KJ4SKO DK8HC JO42
023900 -19 2080  KJ4SKO LA6VQ -25
021745 -13 2594  EI9KF KJ4SKO EL98 (x2)
022130 -12 2472  W7PK KJ4SKO EL98 (x3)
022315 +14 2609  KJ4SKO UB6OFG KN98 (x3)
022900  +6 2645  KJ4SKO DL8TV JN49
004545  -1  933  KJ4SKO DF3IS -16 (x2)

10m

UTC    dB Audio  Message
161200 -17 2022  KJ4SKO SV2AOB -06
161400 -14 1271  KJ4SKO R6DWD RR73
184015  +1  641  KJ4SKO EA7LHN IM77 (x4)

60m

UTC    dB Audio  Message
022545 -12 1327  KJ4SKO SP5EXA -17
022615  +3 1764  KJ4SKO TA1BM KM39
022615 -12 1328  KJ4SKO SP5EXA RR73
022645  +0 1764  KJ4SKO TA1BM KM39 (x2)
022730 -20 1188  TA1BM KJ4SKO -07
022845  -2 1764  KJ4SKO TA1BM R-12 (x2)
023245 -10  737  KJ4SKO IT9VCE 73
023700 -11 2334  KJ4SKO F5MYK -06 (x2)

80m

UTC    dB Audio  Message
024745 -14 1213  K2L KJ4SKO R+10 (x2)
025145 -15 2397  K2G KJ4SKO EL98
012200 -21 2434  KB6BZZ KJ4SKO R+07
012645 -24 1094  EA5HM KJ4SKO EL98 (x2)
023530 +15 2102  KJ4SKO OM1II JN88 (x3)
020430 -24 1200  K4YT KJ4SKO EL98
020445  +0  425  KJ4SKO K4YT -04 (x2)
020530 -20 1200  K4YT KJ4SKO 73
021115 +11 1571  KJ4SKO UT5ZC -18 (x2)

20m

UTC    dB Audio  Message
222730 -14 1377  KJ4SKO M0GQC RR73
223130  +2  797  KJ4SKO M8KKH -14 (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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