WP4NVX — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Puerto Rico Most frequent locator attributed to this token: FK67

Receiver-side FT8 activity involving WP4NVX, decoded by SO8OO in southeastern Poland. 106 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-09-14.

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 106 FT8 messages attributed to WP4NVX as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (65%), followed by 20 m (35%). Several six-hour UTC windows tied for the largest share (99%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (64%); the estimated median was -17 dB.

Overview

106

Messages attributed

UTC dates decoded

Active 15-min windows

-17 dB

Estimated median S/N

Bands

40m · 69 20m · 37

First attributed message: 2026-06-09
Last attributed message: 2026-09-14 00:49 UTC

Observed FT8 message patterns

Attributed sample: 106 messages
Active dates: 7 UTC dates
Estimated median S/N: -17 dB
Estimated 10th-90th percentile: -21 to -13 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 68, moderate (-15 to -9 dB) 38, strong (≥ -8 dB) 0.

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 WP4NVX in decoded directed-looking exchanges:

G5MJF · England IU4BJC · Italy R2EC · European Russia R5DT · European Russia R7MP · European Russia RA3FY · European Russia RA6ABC · European Russia RN6MA · European Russia YO3GCL · Romania F1PBZ · France HK3W · Colombia IK4LZH · Italy

Most frequent locator attributed to WP4NVX

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: FK67 · 56 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,443 km (approx.)
Last such locator decoded: 2026-09-14 00:48 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	WP4NVX S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-13 01:50	40m	-22 / -	PY4PK	- / -18	2	✓ Closing fragment
09-13 01:44	40m	-20 / -12	HK3W	-8 / -5	5	✓ Full exchange observed
09-13 01:19	40m	-16 / -	KJ5DZV	- / -13	2	Partial capture
09-13 01:17	40m	-16 / -	R2EA	- / -14	2	✓ Closing fragment
09-13 01:16	40m	-16 / -	K0DVH	- / -12	2	✓ Closing fragment
09-13 01:10	40m	-13 / -	ON1DGN	- / -22	4	Partial capture
09-13 01:04	40m	-17 / -	K2AA	- / -	6	Partial capture
09-13 00:56	40m	-20 / -18	R6ZEJ	-4 / -	4	✓ Closing observed
09-13 00:54	40m	-21 / -15	RN6LPC	+5 / -	5	✓ Closing observed
09-13 00:51	40m	- / -	RV6MX	-8 / -	2	Partial capture
09-13 00:49	40m	-20 / -	WP4TUN	- / -17	2	✓ Closing fragment
09-12 21:27	40m	- / -	PA3EWP	+3 / -	4	Partial capture
09-12 21:25	40m	- / -	LB7ZG	+12 / -	4	Partial capture
08-17 21:36	20m	- / -	YO4MXK	-10 / -	3	Partial capture
08-17 21:34	20m	- / -11	YO3GCL	-9 / -	3	✓ Closing fragment
08-17 20:30	20m	- / -24	G5MJF	-14 / -	3	✓ Closing fragment
08-17 20:28	20m	- / -15	IU4BJC	-16 / -	2	✓ Closing fragment
08-11 01:31	20m	- / -15	R5DT	-10 / -	2	✓ Closing fragment
08-10 23:59	20m	- / -	DL1R	0 / -	7	Partial capture
07-31 19:36	10m	- / -	DF4TC	-18 / -	2	Partial capture
07-31 01:44	40m	- / -	R4UR	-19 / -	2	✓ Closing fragment
07-17 01:36	20m	- / -12	RA6ABC	-14 / -	5	✓ Closing fragment
07-14 19:41	20m	- / -7	F1ODM	-12 / -	2	Partial capture
07-10 00:45	40m	- / -	UA3PAB	-18 / -	2	✓ Closing fragment
07-10 00:40	40m	- / -16	PD1LVK	-12 / -	2	✓ Closing fragment
07-10 00:24	40m	- / -	IK4LZH	+2 / -	3	✓ Closing fragment
07-09 23:45	40m	- / -	IK4LZH	+5 / -	3	Partial capture
07-07 03:58	20m	- / -16	R7MP	-21 / -	3	✓ Closing fragment
07-07 03:57	20m	- / -17	RA3FY	-15 / -	3	✓ Closing fragment
07-07 03:52	20m	- / -19	R2EC	-2 / -	4	✓ Closing fragment
06-24 23:33	40m	- / -	RK4FV	-19 / -	3	✓ Closing fragment
06-24 23:31	40m	- / -17	RA3THN	-12 / -	4	✓ Closing fragment
06-23 01:57	40m	- / -	UA3QHF	-16 / -	3	Partial capture
06-23 01:55	40m	- / -20	IQ4JO	+12 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
014245 -20 1929  CQ WP4NVX FK67
014400 -10 1092  WP4NVX HK3W FJ34
014415 -19 1929  HK3W WP4NVX -05
014430  -7 1092  WP4NVX HK3W R-12
014445 -21 1929  HK3W WP4NVX RR73
014500  -7 1092  WP4NVX HK3W 73
014715 -19 1929  CQ WP4NVX FK67                        a1 (x3)
014900 -19 1929  WP4NVX R5AV -20
015015 -21 1929  PY4PK WP4NVX -18 (x2)
004800 -15 1928  CQ WP4NVX FK67 (x2)
004930 -17 1928  K9DLO WP4NVX -10

20m

UTC    dB Audio  Message
013215  -9  754  WP4NVX R5DT RR73
202815 -17 1724  WP4NVX IU4BJC R-15 (x2)
203045 -13 1782  WP4NVX G5MJF -24 (x3)
203715 -15 2324  WP4NVX RQ6Z KN98
213415 -10 2269  WP4NVX YO3GCL KN34 (x3)
213645 -10 2611  WP4NVX YO4MXK KN44 (x3)
005315 -17  843  CQ WP4NVX FK67                        a1
005345 -17  843  W8RAY WP4NVX FK67

10m

UTC    dB Audio  Message
193615 -20 1423  WP4NVX DF4TC JN48 (x2)
195115 -17 1066  WP4NVX M0SSK JO01

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