N4DWD — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EM86

Receiver-side FT8 activity involving N4DWD, decoded by SO8OO in southeastern Poland. 728 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 32 UTC dates in the available aggregate history. Observed between 2026-06-07 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 728 FT8 messages attributed to N4DWD as the transmitting token by decoded message structure across 32 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (94%), followed by 20 m (6%). Most decodes (98%) 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 -16.6 dB.

Overview

728

Messages attributed

UTC dates decoded

125

Active 15-min windows

-16.6 dB

Estimated median S/N

Bands

40m · 684 20m · 44

First attributed message: 2026-06-07
Last attributed message: 2026-10-06 01:45 UTC

Observed FT8 message patterns

Attributed sample: 728 messages
Active dates: 32 UTC dates
Estimated median S/N: -16.6 dB
Estimated 10th-90th percentile: -21 to -11 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 421, moderate (-15 to -9 dB) 289, strong (≥ -8 dB) 18.

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 N4DWD in decoded directed-looking exchanges:

F1PBZ · France ×2 CT2GQA · Portugal ×2 F1IQH · France ×2 F4MMH · France ×2 F5MOO · France ×2 GJ0KYZ · Jersey ×2 IW2ODG · Italy ×2 KE9EUV · United States ×2 KF9UG · United States ×2 TA3NK · Asiatic Turkey ×2 EA3CUU · Spain ×2 HB9ALO · Switzerland ×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 N4DWD

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: EM86 · 441 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,911 km (approx.)
Last such locator decoded: 2026-10-05 23:20 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	N4DWD S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-07 06:20	40m	- / -11	F4DIA	-2 / -	2	Partial capture
10-07 06:16	40m	- / -	OT8T	-8 / -	2	Partial capture
10-07 06:09	40m	- / -10	LX1NO	+2 / -	5	Partial capture
10-07 06:03	40m	- / -	ON4CFC	-4 / -	3	Partial capture
10-07 06:02	40m	- / -12	F4FPO	-10 / -	2	Partial capture
10-07 05:38	40m	- / 0	GJ0KYZ	-3 / -	2	✓ Closing fragment
10-06 02:53	40m	- / -11	DB4SZ	-11 / -	4	✓ Closing fragment
10-06 02:43	40m	- / -	F3CJ	-15 / -	3	Partial capture
10-06 02:20	40m	- / -	CT2HEX	-14 / -	2	✓ Closing fragment
10-06 02:13	40m	- / -	R6OG	-11 / -	2	✓ Closing fragment
10-06 01:42	40m	-18 / -16	LZ1QZ	-6 / -	6	✓ Closing observed
10-06 01:38	40m	-20 / -19	LZ1QZ	-11 / -13	2	Partial capture
10-06 00:25	40m	- / -	IU2SLI	-18 / -	4	Partial capture
10-05 23:56	40m	- / -	CT3IQ	-13 / -	2	Partial capture
10-05 23:48	40m	- / -12	I4DOR	+1 / -	4	✓ Closing fragment
10-05 23:39	40m	- / -11	AO5CV	-4 / -	2	✓ Closing fragment
10-05 05:31	60m	- / -13	DL4MFC	-6 / -	4	✓ Closing fragment
10-05 05:31	60m	- / -15	F1IQH	-10 / -	3	✓ Closing fragment
10-05 05:30	60m	- / -16	ON1JP	-23 / -	2	Partial capture
10-05 04:41	80m	- / -	DL3OCF	+13 / -	2	Partial capture
10-05 04:28	80m	- / -16	DL3OCF	+8 / -	4	Partial capture
10-05 04:22	40m	- / -6	IT9JNR	+1 / -	2	✓ Closing fragment
10-05 04:20	40m	- / +3	AM5CV	-18 / -	2	Partial capture
10-05 04:01	40m	- / -	F5OEQ	-19 / -	2	Partial capture
10-05 03:24	40m	- / -7	IU3VGK	-7 / -	2	Partial capture
10-05 03:20	40m	- / -3	J48S	-8 / -	2	✓ Closing fragment
10-05 02:50	40m	- / -13	UI6A	-11 / -	3	Partial capture
10-05 02:26	40m	- / -2	TA3NK	0 / -	6	✓ Closing fragment
10-05 02:22	40m	- / -6	IT9CCB	0 / -	3	✓ Closing fragment
10-05 01:18	40m	-19 / -10	YO4CVV	-5 / -21	9	Partial capture
10-05 01:10	40m	- / -	SV1MOZ	+2 / -	5	Partial capture
10-05 00:58	40m	- / +2	KR4I	+1 / -	2	✓ Closing fragment
10-05 00:53	40m	-16 / -	AE9WW	- / +4	3	Partial capture
10-05 00:51	40m	- / +8	KX7C	-4 / -	6	Partial capture
10-05 00:51	40m	-14 / -	W1HNT	- / +8	4	✓ Closing fragment
10-05 00:40	40m	-18 / -	AE9WW	- / -	2	Partial capture
10-05 00:35	40m	-18 / -	KC9UEA	- / -13	5	Partial capture
10-05 00:25	40m	-20 / -	KC8TDS	- / +2	2	Partial capture
10-05 00:16	40m	-18 / 0	R6AR	+1 / -18	9	✓ Full exchange observed
10-05 00:05	40m	-18 / -	F8FKI	- / -	2	✓ Closing fragment
10-05 00:02	40m	-19 / -	KJ5NSM	- / +6	2	✓ Closing fragment
10-04 23:42	40m	-23 / -	KC4JEM	- / -14	2	✓ Closing fragment
10-04 23:41	40m	- / -	PS8ARP	-10 / -	3	Partial capture
10-04 23:38	40m	-15 / -	WQ5W	- / -17	2	✓ Closing fragment
10-04 23:36	40m	-14 / -	W4RKZ	- / -	2	Partial capture
10-04 23:32	40m	-18 / -	W5RYG	- / -8	2	Partial capture
10-04 23:31	40m	-20 / -	WA8H	- / -	2	✓ Closing fragment
10-04 23:16	40m	- / -16	IW1GB	-6 / -	2	Partial capture
10-04 22:57	40m	- / -	G8CRB	-14 / -	2	Partial capture
10-04 22:21	40m	- / -16	EA1QC	-16 / -	4	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
060200  -9 1279  N4DWD F4FPO JN35 (x2)
060300  -7 1278  N4DWD ON4CFC JO21 (x3)
060630 -10 2760  N4DWD EA3EHQ 73
060930  +4  827  N4DWD LX1NO JN39 (x5)
061600 -10  841  N4DWD OT8T JO21 (x2)
062000  -2 1169  N4DWD F4DIA JN36 (x2)

60m

UTC    dB Audio  Message
051700  -6 1642  N4DWD PA3T R-15 (x2)
035945  -4 2230  N4DWD Z35T -12 (x2)
041215 -13 1956  N4DWD F4LVE -01 (x2)
053045 -22 1529  N4DWD ON1JP -16
053115  -9  783  N4DWD F1IQH JN27
053115  -3 1970  N4DWD DL4MFC JN58
053145 -12  783  N4DWD F1IQH R-15
053215 -24 1529  N4DWD ON1JP -16
053215  -9  783  N4DWD F1IQH 73
053215  -4 1167  N4DWD DL4MFC JN58 (x3)

80m

UTC    dB Audio  Message
054445 +11  506  N4DWD DO4DXA JN58 (x2)
054545 -11 1409  N4DWD IT9VCE JM77 (x3)
055130 -14 1191  N4DWD IZ2EWN JN45 (x3)
042830 -10 2235  N4DWD F4LZZ JN09
042830  +9 1262  N4DWD DL3OCF -16 (x6)

20m

UTC    dB Audio  Message
052900  -7 1548  N4DWD IT9LCC 73
193730  -2  965  N4DWD M9KTM IO91 (x3)
194430  +5  621  N4DWD M9OOS IO93
015615 -21 2158  KF0VR N4DWD R+05
015930 -23 2157  KD5RYB N4DWD EM86 (x2)
161145  -2 1022  N4DWD DL7HS JN48 (x3)
220145  +4  412  N4DWD CT2KCK IM59 (x3)
220630  -8  412  KK6PMM N4DWD -17

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