KO4PRE — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: FM18

Receiver-side FT8 activity involving KO4PRE, decoded by SO8OO in southeastern Poland. 867 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, across 54 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-10-06.

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 867 FT8 messages attributed to KO4PRE as the transmitting token by decoded message structure across 54 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (65%), followed by 40 m (21%) and 160 m (15%). Most decodes (100%) fell within the six-hour window 23:00-05:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.

Overview

867

Messages attributed

UTC dates decoded

170

Active 15-min windows

-13 dB

Estimated median S/N

Bands

160m · 126 80m · 562 40m · 179

First attributed message: 2026-06-08
Last attributed message: 2026-10-06 04:53 UTC

Observed FT8 message patterns

Attributed sample: 867 messages
Active dates: 54 UTC dates
Estimated median S/N: -13 dB
Estimated 10th-90th percentile: -22 to -5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 311, moderate (-15 to -9 dB) 356, strong (≥ -8 dB) 200.

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 KO4PRE in decoded directed-looking exchanges:

DH1KJ · Fed. Rep. of Germany ×3 DF2GH · Fed. Rep. of Germany ×2 IT9VCE · Sicily ×2 LY7M · Lithuania ×2 OE5RLM · Austria ×2 OK1XV · Czech Republic ×2 ON8DM · Belgium ×2 PY6HD · Brazil ×2 SM2LIY · Sweden ×2 SP3PLD · Poland ×2 US1VM · Ukraine ×2 EW8AAC · Belarus ×2

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 KO4PRE

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: FM18 · 482 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,390 km (approx.)
Last such locator decoded: 2026-10-06 04:52 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	KO4PRE S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-11 02:05	160m	- / -20	HA7TM	+20 / -	2	✓ Closing fragment
10-07 03:35	160m	- / -12	M5RJR	+2 / -	12	✓ Closing fragment
10-06 04:53	160m	- / -	DK5WL	-1 / -	3	Partial capture
10-06 04:51	160m	- / -	HB9GNH	-13 / -	5	Partial capture
10-06 04:51	160m	-8 / -16	G1XOW	+5 / -15	7	✓ Full exchange observed
10-06 04:47	160m	- / -26	DK5WL	-12 / -	6	Partial capture
10-06 04:45	160m	-5 / -12	F5LEN	+2 / -	5	✓ Closing observed
10-06 04:36	160m	-10 / -11	HA8EV	+12 / -11	4	✓ Full exchange observed
10-06 04:35	160m	-10 / -6	OK1PI	+11 / -13	7	✓ Full exchange observed
10-06 02:28	160m	-10 / -	WB5TUF	- / -2	2	Partial capture
10-05 01:48	160m	- / -	9A4ZM	+11 / -	2	Partial capture
10-03 05:33	160m	- / -21	HB9HFN	-12 / -	4	✓ Closing fragment
10-03 05:32	160m	- / -9	EA6Y	-12 / -	2	✓ Closing fragment
10-03 05:23	160m	- / -13	IK2TDM	-14 / -	2	Partial capture
10-03 05:17	160m	- / -	LA5LJA	-16 / -	2	Partial capture
10-03 05:16	160m	- / -	HB9HFN	-10 / -	8	Partial capture
10-03 05:16	160m	- / -15	IK2TDM	-8 / -	4	Partial capture
10-03 04:58	160m	- / -	HB9HFN	-7 / -	9	Partial capture
10-03 04:40	160m	- / -	DK3UA	+6 / -	2	Partial capture
10-03 04:31	160m	- / -20	OM3WBY	+2 / -	4	Partial capture
10-03 04:29	160m	- / -11	IZ8VYU	-18 / -	2	✓ Closing fragment
10-03 04:25	160m	- / -17	IK4ADE	+5 / -	3	✓ Closing fragment
10-03 04:22	160m	- / -6	EA3NP	-20 / -	2	✓ Closing fragment
10-03 04:14	160m	- / -3	S53R	+18 / -	2	✓ Closing fragment
10-03 03:30	160m	- / -14	ES2AJ	+15 / -	5	✓ Closing fragment
10-03 02:33	160m	- / -25	ES2AJ	+10 / -	2	Partial capture
10-03 02:19	160m	- / -	UW5ZO	+16 / -	3	Partial capture
10-03 02:06	160m	-23 / -12	OH5KNL	+4 / -20	5	✓ Full exchange observed
10-03 01:56	160m	- / -13	OH0Z	+16 / -	4	✓ Closing fragment
10-03 01:39	160m	- / -19	OH5KNL	-2 / -	3	Partial capture
10-03 01:37	160m	- / -5	GM4YXI	+8 / -	2	✓ Closing fragment
10-03 01:09	160m	- / -14	G7RAU	-4 / -	4	✓ Closing fragment
10-03 01:04	160m	- / -	HB9HFN	+10 / -	9	Partial capture
10-03 00:30	160m	- / -9	LA9JKA	-3 / -	11	✓ Closing fragment
10-03 00:28	160m	-13 / -17	GI4SNA	+6 / -	3	✓ Closing observed
10-03 00:25	160m	- / -	LA9JKA	-4 / -	4	Partial capture
10-02 02:38	160m	- / -17	UT5ECZ	+8 / -	3	✓ Closing fragment
10-01 05:16	160m	- / -	HB9HFN	-8 / -	9	Partial capture
10-01 05:16	160m	- / -15	ON4IQ	+2 / -	4	✓ Closing fragment
10-01 05:15	160m	- / -1	LX1TI	-2 / -	2	✓ Closing fragment
10-01 04:44	160m	- / -8	E73DPR	-8 / -	2	✓ Closing fragment
10-01 04:41	160m	-6 / -	F6ECI	- / -	3	Partial capture
10-01 04:39	160m	-6 / -	E73DPR	- / -	2	Partial capture
10-01 04:36	160m	-5 / -	EA6VQ	- / -	2	Partial capture
10-01 04:33	160m	-4 / -	ON4GG	- / -	6	Partial capture
10-01 04:29	160m	-4 / -	EA6VQ	- / -	2	Partial capture
10-01 04:27	160m	-6 / -	OZ8R	- / -	2	Partial capture
10-01 04:23	160m	-7 / -	EA6VQ	- / -	6	Partial capture
10-01 04:21	160m	0 / -10	EW4M	+19 / -	3	✓ Closing observed
10-01 03:29	160m	-15 / -12	OE5RLM	+2 / -	4	✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
045415  -2 1733  KO4PRE DK5WL JN39
033545  +2 1320  KO4PRE M5RJR -12 (x12)
020500 +20  555  KO4PRE HA7TM -20 (x2)

80m

UTC    dB Audio  Message
014915 -12  591  VE9HF KO4PRE R-02
015030  -6  861  KO4PRE DL2KZA JO64
002030 -16  702  CQ KO4PRE FM18
002045 +23  702  KO4PRE DD6WF JO62
002100 -13  702  CQ KO4PRE FM18
002115 +15  888  KO4PRE DK1ML -20
002115 +22  702  KO4PRE DD6WF JO62
002130 -10  701  DK1ML KO4PRE R-14
002145 +21  888  KO4PRE DK1ML RR73
002200 -11  701  DK1ML KO4PRE 73
002215 +13 1108  KO4PRE SM5DIC JO89 (x5)

40m

UTC    dB Audio  Message
032830  -8  457  VE5PMG KO4PRE FM18 (x3)
033715 -21 2184  YN9ZDJ KO4PRE R-13 (x2)
020415 -24 1881  VE7UBA KO4PRE FM18 (x4)
020615 -21 1881  VP5/K5UR KO4PRE FM18 (x2)
004400 -16  932  HZ1IP KO4PRE FM18
004630 -14  932  VO1ACZ KO4PRE FM18
011845 -13  861  KF8EDQ KO4PRE FM18 (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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