K4SO — 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: FM18

Receiver-side FT8 activity involving K4SO, decoded by SO8OO in southeastern Poland. 134 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 10m, across 13 UTC dates in the available aggregate history. Observed between 2026-08-05 and 2026-10-29.

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 134 FT8 messages attributed to K4SO as the transmitting token by decoded message structure across 13 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (46%), followed by 40 m (36%) and 160 m (16%). Most decodes (98%) fell within the six-hour window 22:00-04:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.

Overview

134

Messages attributed

UTC dates decoded

Active 15-min windows

-13 dB

Estimated median S/N

Bands

160m · 21 80m · 62 60m · 2 40m · 48 10m · 1

First attributed message: 2026-08-05
Last attributed message: 2026-10-29 02:06 UTC

Observed FT8 message patterns

Attributed sample: 134 messages
Active dates: 13 UTC dates
Estimated median S/N: -13 dB
Estimated 10th-90th percentile: -22 to -3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 47, moderate (-15 to -9 dB) 51, strong (≥ -8 dB) 36.

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 K4SO in decoded directed-looking exchanges:

EP2AES · Iran ×3 SP3PLD · Poland ×2 G8KHF · England ×2 9A3YV · Croatia DF6PW · Fed. Rep. of Germany DJ2TI · Fed. Rep. of Germany DL1RWN · Fed. Rep. of Germany DL8LE · Fed. Rep. of Germany EA3A · Spain F5NZ · France HB9CXZ · Switzerland HB9FLU · Switzerland

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 K4SO

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 · 56 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,390 km (approx.)
Last such locator decoded: 2026-10-29 02:03 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	K4SO S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-29 02:03	40m	+2 / -	UK8OM	- / -14	2	Partial capture
10-28 01:28	40m	- / -14	R2BQM	-13 / -	3	Partial capture
10-28 01:21	40m	-13 / -	EP2AES	- / -6	9	✓ Closing fragment
10-23 14:15	10m	- / -	CT7AUT	-8 / -	3	Partial capture
10-22 03:52	160m	- / -17	LZ1ST	-6 / -	4	Partial capture
10-22 03:50	160m	- / -21	DL8LE	+14 / -	4	✓ Closing fragment
10-22 03:50	160m	- / -	OM0RX	+5 / -	3	Partial capture
10-22 03:50	160m	- / -25	OZ1DJJ	+4 / -	2	✓ Closing fragment
10-19 04:04	80m	- / -18	DO5HOK	+2 / -	2	Partial capture
10-19 04:02	80m	-24 / -	F4EGM	+2 / -	2	✓ Closing observed
10-19 04:01	80m	- / -14	IW0GYC	+6 / -	4	✓ Closing fragment
10-16 01:05	60m	- / -10	PA4PA	+10 / -	2	✓ Closing fragment
10-15 23:51	60m	- / -11	SP5EXA	-8 / -	2	✓ Closing fragment
10-15 23:45	60m	- / -9	F5RMK	-7 / -	2	✓ Closing fragment
10-12 01:42	80m	- / 0	VP2MAW	-17 / -	2	✓ Closing fragment
10-09 04:48	160m	- / -20	DL1RWN	+8 / -	2	✓ Closing fragment
10-09 03:15	80m	-18 / -14	G8KHF	-10 / -	3	✓ Closing observed
10-09 03:10	80m	-14 / -18	OK1UOZ	+8 / -8	5	✓ Full exchange observed
10-09 03:08	80m	-12 / -8	GM6URC	-10 / -9	5	✓ Full exchange observed
10-09 03:04	80m	- / -	DO1NAE	0 / -	12	Partial capture
10-03 05:30	160m	- / -12	LA6YEA	-9 / -	3	✓ Closing fragment
10-03 05:27	160m	- / +1	EA3A	-14 / -	4	✓ Closing fragment
09-25 04:53	160m	- / -15	HB9FLU	-10 / -	2	✓ Closing fragment
09-25 04:53	160m	- / -18	IK1LRX	-8 / -	11	Partial capture
09-25 04:43	160m	- / -20	SP3PLD	+12 / -	5	✓ Closing fragment
09-25 04:42	160m	- / -16	OO9A	-11 / -	5	✓ Closing fragment
09-25 04:41	160m	- / -	IK1LRX	-4 / -	12	Partial capture
09-25 04:38	160m	- / -13	F5NZ	-7 / -	6	✓ Closing fragment
09-24 04:59	160m	- / -	9A5E	-8 / -	8	Partial capture
09-24 04:01	160m	- / -12	OH5LF	+2 / -	2	Partial capture
09-24 03:59	160m	-19 / -16	LY7M	+14 / -9	4	✓ Full exchange observed
09-24 03:58	160m	-19 / -1	SV8JE	-5 / +2	5	✓ Full exchange observed
09-24 03:57	160m	- / -	DL6ON	-4 / -	3	Partial capture
09-24 03:57	160m	- / -	IV3IRO	-5 / -	11	Partial capture
09-24 03:57	160m	- / -13	LZ2EV	-10 / -	4	✓ Closing fragment
09-24 03:56	160m	-15 / -12	OH5LF	+8 / -20	4	Partial capture
09-24 03:55	160m	-16 / -13	OH2CLX	+8 / -16	8	✓ Full exchange observed
09-24 03:52	160m	-21 / -	IT9VCE	-24 / -8	2	✓ Closing observed
09-24 03:50	160m	-11 / -5	9A3YV	+9 / -	4	✓ Closing observed
09-24 03:50	160m	-18 / -13	DJ2TI	+6 / -8	6	✓ Full exchange observed
09-24 03:49	160m	-18 / -	N1KI	- / -1	2	✓ Closing fragment
09-24 03:48	160m	-19 / -8	OH5VT	+4 / -18	5	✓ Full exchange observed
09-24 03:46	160m	- / -7	SP3BPU	+10 / -	3	✓ Closing fragment
09-24 03:35	160m	-22 / -	VE6KIX	- / -	2	Partial capture
09-24 02:05	160m	- / -25	OH1MLZ	+19 / -	4	✓ Closing fragment
09-24 02:03	160m	- / -16	PY6HD	-16 / -	2	✓ Closing fragment
09-23 04:29	80m	- / -13	SP9WP	+1 / -	6	Partial capture
09-23 04:25	80m	- / -11	SP7SZJ	-3 / -	4	Partial capture
09-23 04:24	80m	- / -2	5P1KZX	+11 / -	2	✓ Closing fragment
09-23 04:07	80m	- / -	EU7FBB	-1 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
035015  +3 1502  K4SO OM0RX JN88
035030  +5 2210  K4SO OZ1DJJ RR73
035030 +15  961  K4SO DL8LE JN68 (x2)
035115  +6 1502  K4SO OM0RX JN88
035130 +15  961  K4SO DL8LE R-21
035145  +5 1502  K4SO OM0RX JN88
035200 -10 2051  K4SO LZ1ST KN21
035200 +14  961  K4SO DL8LE 73
035230  -4 2051  K4SO LZ1ST KN21 (x3)
035645 +10  652  K4SO F1PBZ -13
041000 +16  258  K4SO UW5ZM -10
045030 +16 2500  K4SO DL3IAE -19

40m

UTC    dB Audio  Message
012330 -11 2491  EP2AES K4SO FM18 (x7)
012830  +8 2443  K4SO RZ6L KN97
012830 -16 1677  K4SO R2BQM -14 (x3)
020015  +0 2796  UK8OM K4SO FM18 (x3)
020615  +3 2796  F6FHZ K4SO R-18

10m

UTC    dB Audio  Message
141545 -10 1532  K4SO CT7AUT IM67 (x3)
142130 -15  835  EP2AES K4SO 73

80m

UTC    dB Audio  Message
031545 -18 2269  G8KHF K4SO FM18
031630  -9  912  K4SO G8KHF -14 (x2)
031815 -19 2269  HB3YOY K4SO FM18
032145 -21 2280  WF3J K4SO +15
014215 -17 1312  K4SO VP2MAW +00 (x2)
040145  +7 2421  K4SO IW0GYC JN61
040200 -24 1969  F4EGM K4SO RR73
040215  +8 2421  K4SO IW0GYC JN61
040215  +2 1853  K4SO F4EGM 73
040245  +8 2420  K4SO IW0GYC R-14 (x2)
040415  +0  808  K4SO DO5HOK -18 (x2)

60m

UTC    dB Audio  Message
020230 -16 2020  K4SO ER3ZW -06
020245 -19 1874  ER3ZW K4SO R+02
020300 -18 2020  K4SO ER3ZW RRR
020315 -20 1875  ER3ZW K4SO 73
020330 -16 2351  K4SO UT9NA KN49
234500  -7 2038  K4SO F5RMK -09 (x2)
235145  -9 2533  K4SO SP5EXA -11 (x2)
235315  -9  981  K4SO F4FTV JN15
010530 +14  263  K4SO PA4PA -10 (x2)
011545 -14 1740  K4SO EC3A -20

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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