K4PWM — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: FM08

Receiver-side FT8 activity involving K4PWM, decoded by SO8OO in southeastern Poland. 25 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-08-26 and 2026-09-25.

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 25 FT8 messages attributed to K4PWM 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 (60%), followed by 20 m (40%). 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

40m · 15 20m · 10

First attributed message: 2026-08-26
Last attributed message: 2026-09-25 02:40 UTC

Observed FT8 message patterns

Attributed sample: 25 messages
Active dates: 4 UTC dates
Estimated median S/N: -13 dB
Estimated 10th-90th percentile: -23 to -8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 10, moderate (-15 to -9 dB) 12, strong (≥ -8 dB) 3.

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 K4PWM in decoded directed-looking exchanges:

4L7T · Georgia F5MXH · France OH2XO · Finland PA2EW · Netherlands PD0RCQ · Netherlands PD9JPV · Netherlands R6YY · European Russia YO9HP · Romania CT7AUT · Portugal DL3MIB · Fed. Rep. of Germany DL9KM · Fed. Rep. of Germany EA3NE · Spain

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 K4PWM

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: FM08 · 9 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,510 km (approx.)
Last such locator decoded: 2026-09-25 02:40 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	K4PWM S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-18 03:03	40m	- / -	F3CJ	-19 / -	4	Partial capture
10-18 03:02	40m	- / -	G1UMV	-16 / -	2	Partial capture
10-18 02:59	40m	- / -8	F4PCM	-6 / -	6	✓ Closing fragment
10-18 02:59	40m	- / -	HI3LER	-8 / -	2	Partial capture
10-18 02:51	40m	- / -	LZ2VQ	-10 / -	2	Partial capture
10-18 02:51	40m	- / -	HG8LXL	-10 / -	2	Partial capture
10-18 02:48	40m	- / -11	UT5ECZ	+11 / -	4	✓ Closing fragment
10-18 02:40	40m	- / -9	IZ8NON	-11 / -	2	Partial capture
10-18 02:21	40m	- / -	G3TKT	-10 / -	2	Partial capture
10-18 02:16	40m	- / -7	F4CQS	-8 / -	4	Partial capture
10-18 02:08	40m	- / -13	F4CQS	-8 / -	5	Partial capture
10-18 02:02	40m	- / -	G3TKT	-4 / -	5	Partial capture
10-18 01:53	40m	- / -14	RK6A	+17 / -	4	✓ Closing fragment
10-18 01:48	40m	- / -1	G3TKT	-5 / -	8	Partial capture
10-18 01:47	40m	- / -9	F4CQS	-9 / -	3	Partial capture
10-18 01:36	40m	- / -8	CT2GQA	-6 / -	3	Partial capture
10-18 01:33	40m	- / -	F4HKP	-5 / -	3	Partial capture
10-18 01:28	40m	- / -	F4FLF	-3 / -	5	Partial capture
10-16 03:22	40m	- / -12	MI7XHT	-14 / -	3	✓ Closing fragment
10-16 03:14	40m	- / -14	SV5AZK	-18 / -	2	Partial capture
10-16 03:11	40m	- / -10	CT7AUT	-12 / -	2	✓ Closing fragment
10-09 04:21	40m	- / -	F5OZK	-3 / -	3	Partial capture
10-09 02:29	40m	- / -12	F4MXT/P	+7 / -	3	✓ Closing fragment
10-09 02:26	40m	- / -	F4FPR	+3 / -	3	Partial capture
10-09 02:26	40m	- / -	F4MXT/P	0 / -	2	Partial capture
10-09 02:25	40m	- / -	G3TKT	+2 / -	2	Partial capture
10-09 02:25	40m	- / -	G7KNF	-4 / -	2	Partial capture
10-09 02:07	40m	- / -	CT2GQA	-10 / -	5	Partial capture
10-09 02:07	40m	- / -	R7DX	-12 / -	3	Partial capture
10-09 02:04	40m	- / -	LZ2PAJ	-10 / -	2	Partial capture
10-07 00:36	40m	- / -	CT3MD	-9 / -	4	Partial capture
10-06 00:04	40m	- / -	M0PEL	-8 / -	2	Partial capture
10-05 01:02	40m	- / -	G3TKT	-4 / -	6	Partial capture
10-05 00:51	40m	- / -13	F4GVO	+4 / -	3	✓ Closing fragment
10-04 23:44	40m	- / -6	EA4HPY	+3 / -	3	✓ Closing fragment
10-04 23:33	40m	- / -	HI8WJI	-16 / -	3	Partial capture
10-04 23:12	40m	- / -	F6FDY	-11 / -	5	Partial capture
10-04 23:09	40m	- / -16	F1PBZ	-2 / -	3	Partial capture
10-04 22:59	40m	- / -	CT7ARQ	-16 / -	7	Partial capture
10-04 22:58	40m	- / -6	EA1DWZ	-4 / -	2	Partial capture
10-02 23:41	40m	- / -	RA3ZH	-4 / -	2	Partial capture
10-02 23:38	40m	- / -	WA4CHJ	-18 / -	3	✓ Closing fragment
10-02 23:25	40m	- / -13	F1PBZ	-6 / -	4	Partial capture
10-02 03:51	40m	- / +6	G3TKT	-14 / -	4	Partial capture
10-02 02:43	40m	- / -2	G3TKT	-12 / -	4	Partial capture
10-02 02:41	40m	- / -14	ON1JP	-19 / -	5	Partial capture
10-02 02:41	40m	- / -	PA3KUS	-7 / -	11	Partial capture
10-02 02:40	40m	- / -8	RA6ABC	+10 / -	3	✓ Closing fragment
10-02 02:25	40m	- / -	R6OK	-6 / -	2	Partial capture
10-02 02:24	40m	- / -	PA3KUS	-13 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
025215 -12 2382  K4PWM LZ2VQ KN23
025915  -8  537  K4PWM HI3LER FK49
025915  -3 2043  K4PWM F4PCM JN23
025945  -8  537  K4PWM HI3LER FK49
025945  -1 2043  K4PWM F4PCM JN23 (x5)
030215 -12 2042  K4PWM G1UMV IO92 (x2)
030315 -20 1896  K4PWM F3CJ JO10 (x4)

80m

UTC    dB Audio  Message
014445 -21 2206  K4PWM K4YT -04 (x2)
234800 -12 2539  K4PWM K1NOX RR73 (x2)

20m

UTC    dB Audio  Message
200715  -1 3046  K4PWM PA2EW JO22 (x3)
224845 -20 2040  MW7IDN K4PWM -13 (x2)
225715 -20 1634  M9NTS K4PWM RRR (x5)
230115 -14 1634  CQ K4PWM FM08
230545  -7 2326  W4FSO K4PWM FM08 (x2)
010130  -9 2217  K4PWM YO9HP -07 (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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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