NX7U — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: FN20

Receiver-side FT8 activity involving NX7U, decoded by SO8OO in southeastern Poland. 19 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-08-26 and 2026-09-07.

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 19 FT8 messages attributed to NX7U 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 (74%), followed by 80 m (26%). In this small sample, the estimated median decoder S/N was +4 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

+4 dB

Estimated median S/N

Bands

80m · 5 40m · 14

First attributed message: 2026-08-26
Last attributed message: 2026-09-07 00:40 UTC

Observed FT8 message patterns

Attributed sample: 19 messages
Active dates: 4 UTC dates
Estimated median S/N: +4 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 1, strong (≥ -8 dB) 14.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with NX7U in decoded directed-looking exchanges:

9J2FI · Zambia SP7NC · Poland UK8OM · Uzbekistan UN7LZ · Kazakhstan F5OWT · France SP3SLA · Poland SP5AA · Poland SP6TGI · Poland

Most frequent locator attributed to NX7U

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: FN20 · 10 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,111 km (approx.)
Last such locator decoded: 2026-09-07 00:39 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	NX7U S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-07 00:41	40m	- / -7	R2BQM	-2 / -	4	Partial capture
09-07 00:37	40m	+5 / -17	UK8OM	+8 / -15	7	✓ Full exchange observed
09-07 00:36	40m	- / -12	R2EA	+4 / -	2	Partial capture
09-07 00:34	40m	+10 / -	9J2FI	- / -11	4	✓ Closing fragment
09-03 00:38	40m	+3 / -	SP7NC	- / -9	2	✓ Closing fragment
09-03 00:36	40m	+6 / -17	UN7LZ	-9 / -19	5	✓ Full exchange observed
08-30 02:31	80m	-15 / -8	9A5E	+9 / -	8	Partial capture
08-26 03:34	80m	-22 / -	LY3BRA	- / -	2	Partial capture
08-26 03:33	80m	- / -	SV8JE	+2 / -	2	Partial capture
08-26 03:30	80m	- / -	IU5LQC	-11 / -	3	Partial capture
08-26 03:29	80m	- / -9	F5OWT	+8 / -	3	✓ Closing fragment
08-26 03:27	80m	- / -	K4YT	-14 / -	3	Partial capture
08-26 03:27	80m	- / -14	SP3SLA	+7 / -	4	✓ Closing fragment
08-26 03:26	80m	-19 / -17	SP5AA	+17 / -	4	✓ Closing observed
08-26 03:22	80m	-22 / -15	SP6TGI	+10 / -	3	✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
003615  -2  442  NX7U MI7XHT IO64
003645  -4 2773  NX7U VU2MSA -09
003645  +2 2433  NX7U R2EA -12
003715  -8 2771  NX7U UX1VT KN68
003745 +10 2772  UK8OM NX7U FN20 (x3)
004000  +9  546  NX7U UK8OM -17
004015  +4 2377  UK8OM NX7U R-15
004030  +8  546  NX7U UK8OM RR73
004045  +0 2377  UK8OM NX7U 73
004100  -6 2377  NX7U R2BQM -07 (x4)

80m

UTC    dB Audio  Message
033045  +5 2422  NX7U F5OWT 73
033115  -8 1047  NX7U IU5LQC JN53 (x2)
033315  +1  275  NX7U SV8JE KM08 (x2)
033400 -20 2105  LY3BRA NX7U FN20 (x2)
023145 -15 2457  9A5E NX7U FN20
023300  +8 1972  NX7U 9A5E -08 (x7)

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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