N1DNZ — 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 N1DNZ, decoded by SO8OO in southeastern Poland. 26 FT8 messages attributed to this token as transmitter, on 80m, 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-07-18 and 2026-08-26.

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 26 FT8 messages attributed to N1DNZ as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (77%), followed by 80 m (23%). 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

80m · 6 20m · 20

First attributed message: 2026-07-18
Last attributed message: 2026-08-26 23:01 UTC

Observed FT8 message patterns

Attributed sample: 26 messages
Active dates: 6 UTC dates
Estimated median S/N: -13 dB
Estimated 10th-90th percentile: -21 to -3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 10, moderate (-15 to -9 dB) 10, strong (≥ -8 dB) 6.

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 N1DNZ in decoded directed-looking exchanges:

DK7ZT · Fed. Rep. of Germany ×2 IW0FFK · Italy EA9ABC · Ceuta & Melilla OY1HJ · Faroe Islands SP5MCZ · Poland SV5BYP · Dodecanese EB1LA · Spain EB3JT · Spain ER3ZW · Moldova F4FCE · France MI0OBC · Northern Ireland OK1AYM · Czech Republic

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 N1DNZ

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 · 7 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,390 km (approx.)
Last such locator decoded: 2026-08-25 23:32 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	N1DNZ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-17 00:13	40m	- / -	UA4FKT	+8 / -	4	Partial capture
09-16 02:24	160m	- / -17	IW0FFK	+17 / -	2	✓ Closing fragment
09-16 02:13	80m	- / -	K4YT	-19 / -	4	Partial capture
09-02 00:57	40m	- / -	DJ0MAB	-10 / -	2	Partial capture
08-26 23:00	20m	-15 / -18	SV5BYP	-5 / -2	6	✓ Full exchange observed
08-25 23:37	20m	-14 / -	F5PBG	- / -3	2	Partial capture
08-25 23:33	20m	-8 / -	OY1HJ	- / -6	5	✓ Closing fragment
08-25 23:31	20m	+2 / -	TJ1GD	- / -	2	Partial capture
08-25 23:30	20m	-12 / -	OY1HJ	- / -2	2	Partial capture
08-24 23:11	20m	-10 / -	TJ1GD	- / -6	2	Partial capture
08-24 23:07	20m	-19 / -	ZX3P	- / -12	3	Partial capture
08-21 00:47	40m	- / -8	VP2MAA	-9 / -	2	✓ Closing fragment
08-20 03:12	80m	- / -7	K1BZ	-15 / -	2	✓ Closing fragment
08-19 01:09	80m	- / -22	PI4DX	0 / -	3	✓ Closing fragment
08-09 01:57	80m	- / -14	CR7BRV	+5 / -	3	✓ Closing fragment
08-09 01:26	80m	- / -	F8NHF	-6 / -	6	Partial capture
08-09 01:25	80m	- / -	DO5PY	-12 / -	2	Partial capture
08-04 04:05	80m	- / -	K4YT	-6 / -	5	Partial capture
08-02 01:30	20m	- / -	R3KCW	-17 / -	2	Partial capture
08-01 02:36	40m	- / -	DL4ZIP	-16 / -	5	Partial capture
08-01 02:34	40m	- / -	F5RRS	-8 / -	4	Partial capture
07-31 02:51	80m	-24 / -	N5MIG	-14 / -7	2	✓ Closing observed
07-30 03:52	40m	- / -	YO9IAB	-12 / -	2	Partial capture
07-28 00:45	80m	- / -23	9A5E	+2 / -	3	✓ Closing fragment
07-27 00:46	20m	- / -7	A71UN	-19 / -	3	Partial capture
07-26 23:32	40m	- / -15	EB1LA	-14 / -	4	✓ Closing fragment
07-26 23:32	40m	- / -19	IZ8EYN	-6 / -	5	Partial capture
07-26 23:27	40m	- / -25	SM2OTU	-9 / -	3	✓ Closing fragment
07-24 01:31	80m	- / -20	EA2AR	-10 / -	6	Partial capture
07-24 01:19	80m	- / -10	HB9CXZ	+6 / -	3	✓ Closing fragment
07-21 03:23	80m	- / -16	ON8DM	-2 / -	3	✓ Closing fragment
07-21 03:12	80m	- / -12	F5MYK	-3 / -	5	✓ Closing fragment
07-18 01:16	80m	-10 / -15	DK7ZT	+4 / -	6	✓ Closing observed
07-18 01:15	80m	- / -13	HB9EFK	+20 / -	2	✓ Closing fragment
07-18 00:58	40m	- / -12	EW8HP	-24 / -	2	Partial capture
07-15 04:03	40m	- / -20	F4FCE	-12 / -	3	✓ Closing fragment
07-15 02:52	40m	- / -	ER3ZW	-21 / -	3	✓ Closing fragment
07-15 02:16	40m	- / -12	OK1AYM	-5 / -	3	✓ Closing fragment
07-15 02:04	40m	- / -12	EB3JT	-19 / -	3	✓ Closing fragment
07-15 01:47	80m	- / -	DO9JTR	+8 / -	2	✓ Closing fragment
07-15 01:03	40m	- / -19	RW3QU	-5 / -	5	✓ Closing fragment
07-15 00:46	40m	- / -8	DK7ZT	-22 / -	2	✓ Closing fragment
07-12 22:32	20m	- / -13	9K2YM	-12 / -	2	Partial capture
07-12 22:19	20m	- / -12	EA9ABC	-9 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
023630 -17 1863  N1DNZ DL4ZIP JO42
023645  -2 2550  N1DNZ SV1BLD KM17
023800 -17 1864  N1DNZ DL4ZIP JO42 (x3)
004745  -9  577  N1DNZ VP2MAA -08 (x2)
005715 -10  341  N1DNZ DJ0MAB JN49 (x2)
001215 -18  988  N1DNZ F1PBZ -03
001245 -15 1266  N1DNZ PD0RCQ JO21
001315  +8 1268  N1DNZ UA4FKT LO23 (x4)

160m

UTC    dB Audio  Message
022215 -17 1089  N1DNZ W1LH -06
022415 +17  555  N1DNZ IW0FFK -17 (x2)

80m

UTC    dB Audio  Message
012900  -8 1328  N1DNZ F8NHF JO10 (x2)
015745  +4  750  N1DNZ CR7BRV -14 (x3)
010930  +1 1875  N1DNZ PI4DX R-22 (x3)
031215 -13 2411  N1DNZ K1BZ R-07 (x2)
022830  -6  801  N1DNZ NM1G 73
021330 -15 1324  N1DNZ K4YT FM19 (x4)

20m

UTC    dB Audio  Message
233215  +1  542  TJ1GD N1DNZ FM18
233315  -6  542  OY1HJ N1DNZ -06 (x5)
233615  -4 1969  SP5MCZ N1DNZ RR73
233715 -13 1969  F5PBG N1DNZ -03 (x2)
230045 -17 2031  SV5BYP N1DNZ -02
230100  -3 2059  N1DNZ SV5BYP R-18
230115 -16 2031  SV5BYP N1DNZ -02
230130  -3 2059  N1DNZ SV5BYP R-18
230145 -12 2031  SV5BYP N1DNZ RR73
230200  -8 2059  N1DNZ SV5BYP 73

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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