NP4VO — 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: Puerto Rico Most frequent locator attributed to this token: FK78

Receiver-side FT8 activity involving NP4VO, decoded by SO8OO in southeastern Poland. 5 FT8 messages attributed to this token as transmitter, on 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-08-25 and 2026-08-27.

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 5 FT8 messages attributed to NP4VO as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was -15 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-15 dB

Estimated median S/N

Bands

20m · 5

First attributed message: 2026-08-25
Last attributed message: 2026-08-27 21:43 UTC

Observed FT8 message patterns

Attributed sample: 5 messages
Active dates: 2 UTC dates
Estimated median S/N: -15 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 3, 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. 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 NP4VO in decoded directed-looking exchanges:

IK4LZH · Italy ×2 A71DA · Qatar DG4CG · Fed. Rep. of Germany DL8WEM · Fed. Rep. of Germany EA4FVT · Spain G0BLB · England K8RAR · United States KB3MAW · United States

Most frequent locator attributed to NP4VO

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: FK78 · 3 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,219 km (approx.)
Last such locator decoded: 2026-08-27 21:43 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	NP4VO S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-27 22:57	20m	- / -16	7Z1DM	-9 / -	3	Partial capture
08-27 22:46	40m	- / -	CT2HEX	-14 / -	3	Partial capture
08-27 22:43	20m	- / -	CT2HEX	-7 / -	3	Partial capture
08-26 04:26	20m	- / -15	UN7PNF	-17 / -	2	Partial capture
08-25 04:50	20m	-12 / -	HA5CPN	- / -12	2	Partial capture
08-25 04:44	20m	- / -	DL3HBF	0 / -	4	Partial capture
08-25 04:12	20m	- / -16	TI5RR	-4 / -	2	Partial capture
08-25 04:02	20m	- / -	F4JCU	-6 / -	4	Partial capture
08-25 03:57	20m	- / -	RA3FY	-18 / -	2	Partial capture
08-25 03:33	20m	- / +3	DL8WEM	-10 / -	6	✓ Closing fragment
08-25 03:09	20m	- / -8	DG4CG	-6 / -	3	✓ Closing fragment
08-24 23:33	20m	- / -	K1CXS	-12 / -	2	Partial capture
08-24 23:32	20m	- / -	PD0RCQ	-9 / -	3	Partial capture
08-24 23:29	20m	- / -1	IK4LZH	+2 / -	4	✓ Closing fragment
08-24 03:56	20m	- / -22	A71DA	0 / -	3	✓ Closing fragment
08-23 22:16	20m	- / -	EA5ET	-2 / -	8	Partial capture
08-22 02:48	20m	- / -	F4VTR	-6 / -	5	Partial capture
08-22 02:44	20m	- / -	RV9WF	+4 / -	2	Partial capture
08-22 02:44	20m	- / -	V31DL	-12 / -	2	Partial capture
08-22 02:43	20m	- / -5	IK4LZH	+4 / -	4	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
044645  -6  522  NP4VO DL3HBF JO53
045015 -15 1558  CQ NP4VO FK78
045045 -14 1558  HA5CPN NP4VO -12 (x2)
051845  -4 2212  NP4VO G0BLB 73
042630 -18 2017  NP4VO UN7PNF -15 (x2)
214745 -12 1350  NP4VO EA4FVT RR73
214300 -19 1554  CQ NP4VO FK78                         a1
224300  -7 1264  NP4VO CT2HEX IM58 (x3)
225715 -19 1555  NP4VO 7Z1DM -16 (x3)

40m

UTC    dB Audio  Message
224630 -15 1227  NP4VO CT2HEX IM58 (x3)

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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