KP4WK — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Puerto Rico Most frequent locator attributed to this token: EL87

Receiver-side FT8 activity involving KP4WK, decoded by SO8OO in southeastern Poland. 49 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 9 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-09-14.

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 49 FT8 messages attributed to KP4WK as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (63%), followed by 40 m (35%) and 80 m (2%). Several six-hour UTC windows tied for the largest share (88%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-9 dB

Estimated median S/N

Bands

80m · 1 40m · 17 20m · 31

First attributed message: 2026-06-09
Last attributed message: 2026-09-14 02:07 UTC

Observed FT8 message patterns

Attributed sample: 49 messages
Active dates: 9 UTC dates
Estimated median S/N: -9 dB
Estimated 10th-90th percentile: -14 to -6 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 29, strong (≥ -8 dB) 19.

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 KP4WK in decoded directed-looking exchanges:

R2EC · European Russia ×2 4X1UF · Israel 9A4ZM · Croatia 9K2ES · Kuwait HB9AUS · Switzerland IU8RFW · Italy OD5ZZ · Lebanon OK4FX · Czech Republic OM0RX · Slovak Republic PA4AA · Netherlands R7SF · European Russia RL6MT · European Russia

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 KP4WK

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: EL87 · 14 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,675 km (approx.)
Last such locator decoded: 2026-09-10 03:22 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	KP4WK S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-14 02:07	40m	-10 / -7	OE8DDX	-16 / -7	3	Partial capture
09-14 02:05	40m	- / -4	EB3JT	-3 / -	3	✓ Closing fragment
09-14 02:04	40m	- / -15	EI2IXB	+6 / -	2	✓ Closing fragment
09-03 04:46	80m	- / -12	F5RMK	-14 / -	4	Partial capture
09-03 04:40	80m	- / -	HB9ALO	-9 / -	4	Partial capture
08-29 03:08	40m	-8 / -14	RT6C	+8 / -4	8	✓ Full exchange observed
08-29 03:01	40m	-12 / -	NP4VA	- / -15	3	Partial capture
08-29 03:00	40m	-12 / -	NZ1VA	- / 0	3	Partial capture
08-29 02:55	40m	- / -	RT6C	+4 / -	3	Partial capture
08-19 00:52	80m	- / -14	W4AWI	-9 / -	3	✓ Closing fragment
08-19 00:48	40m	- / -16	IC8TEM	-4 / -	4	Partial capture
08-04 02:31	80m	- / +3	VP2MAA	-11 / -	4	Partial capture
08-01 04:01	40m	- / -15	YO9IAB	-13 / -	5	✓ Closing fragment
07-29 03:23	80m	- / -	F5MYK	-12 / -	2	Partial capture
07-29 03:23	80m	- / -	OK1XV	+8 / -	2	Partial capture
07-28 02:58	80m	- / -1	KZ4ZZ	-24 / -	2	✓ Closing fragment
07-28 02:52	40m	- / -17	R2EC	-4 / -	4	✓ Closing fragment
07-28 02:48	40m	- / -12	IZ8VYU	-3 / -	2	✓ Closing fragment
07-27 01:39	40m	- / -	UA4FKT	0 / -	2	Partial capture
07-27 01:38	40m	- / +1	PD1CMP	-18 / -	2	✓ Closing fragment
07-22 03:24	80m	- / -13	HB9EFK	+20 / -	2	✓ Closing fragment
07-19 01:48	80m	- / -24	HB9CXZ	+5 / -	4	Partial capture
07-10 20:53	20m	- / -19	EA3IE	-8 / -	2	Partial capture
07-10 20:47	20m	- / -18	EB5FMC	-14 / -	6	Partial capture
07-10 01:47	20m	-8 / -	9J2FI	- / -20	2	Partial capture
07-10 01:34	20m	- / -	HB9TIH	-20 / -	2	Partial capture
07-10 01:08	20m	-9 / -	A41KB	- / -1	2	Partial capture
07-10 01:07	20m	-7 / -	PA4AA	- / +1	2	✓ Closing fragment
07-10 01:06	20m	-5 / -	R7SF	- / -20	2	✓ Closing fragment
07-10 01:04	20m	-5 / -	9A4ZM	- / 0	2	✓ Closing fragment
07-10 00:08	20m	- / -9	9K2ES	-16 / -	2	✓ Closing fragment
07-09 22:42	20m	-7 / -	Z62NS	- / -	5	Partial capture
07-07 21:27	20m	- / -8	HB9AUS	-20 / -	2	✓ Closing fragment
06-30 04:12	20m	-10 / -	9A4ZM	- / -6	2	Partial capture
06-30 04:11	20m	-9 / -	G3TKT	+6 / -4	3	Partial capture
06-30 04:07	20m	- / -	G3TKT	+8 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
015915  -5  891  KP4WK CR7BRV -12
032200 -13  527  HC5F KP4WK EL87
033600  -1  332  KP4WK EH3PDA +03
033630  +0  332  KP4WK RR73; RZ6L <...> -02
040730  -8  625  KP4WK Z68PX -10
040845 -12  592  S58MU KP4WK R-14
020445  +7  238  KP4WK EI2IXB -15 (x2)
020545  -4  460  KP4WK EB3JT JN01 (x3)
020730 -16  854  KP4WK OE8DDX -07
020745 -10  460  OE8DDX KP4WK R-07
020800 -16  855  KP4WK OE8DDX RRR
020900  -1 2163  KP4WK MI7XHT IO64

80m

UTC    dB Audio  Message
005215  +1  872  KP4WK MI7XHT IO64
005245  -8  780  KP4WK W4AWI EL95 (x3)
044015  -4  905  KP4WK HB9ALO JN45 (x2)
044230 -17 2554  KP4WK F1PBZ -07
044230 -24 1618  KP4WK DL2DBI JO31
044245  -9  852  KP4WK HB9ALO JN45
044330 -10  406  KP4WK DO1FZL JO50
044400 -17  852  KP4WK HB9ALO JN45
044615 -13 1300  KP4WK F5RMK -12 (x4)

20m

UTC    dB Audio  Message
014715  -9  357  9J2FI KP4WK -20 (x2)
204700 -15 1108  KP4WK EB5FMC -18 (x6)
205300  -9  928  KP4WK EA3IE -19 (x2)
193400 -15 1821  KP4WK M1DBW -24
210715  -9 2149  KP4WK DH0YAH -11
020830 -18 1809  KP4WK F1POK -14
023315 -17 1096  KP4WK RK9UN NO33
023345 -14  970  KP4WK UT7UJ -09

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.

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