NP4PR — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Puerto Rico Most frequent locator attributed to this token: FK68

Receiver-side FT8 activity involving NP4PR, decoded by SO8OO in southeastern Poland. 481 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 45 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 481 FT8 messages attributed to NP4PR as the transmitting token by decoded message structure across 45 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (84%), followed by 20 m (16%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (68%); the estimated median was -17 dB.

Overview

481

Messages attributed

UTC dates decoded

104

Active 15-min windows

-17 dB

Estimated median S/N

Bands

40m · 404 20m · 77

First attributed message: 2026-06-07
Last attributed message: 2026-10-06 23:49 UTC

Observed FT8 message patterns

Attributed sample: 481 messages
Active dates: 45 UTC dates
Estimated median S/N: -17 dB
Estimated 10th-90th percentile: -22 to -13 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 329, moderate (-15 to -9 dB) 145, strong (≥ -8 dB) 7.

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 NP4PR in decoded directed-looking exchanges:

PD1LVK · Netherlands ×2 EA5BH · Spain 9K2YM · Kuwait DL9ATW · Fed. Rep. of Germany EA2WX · Spain HS0ZOY · Thailand KE4EB · United States LA1SDX · Norway XQ1KK · Chile 9A6OY · Croatia 9V1YC · Singapore AC4ZH · United States

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 NP4PR

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: FK68 · 287 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,360 km (approx.)
Last such locator decoded: 2026-10-06 23:49 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	NP4PR S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-07 21:52	40m	- / -	M8RLJ	-20 / -	3	Partial capture
10-06 23:50	40m	- / -	RA6FC	-13 / -	2	Partial capture
10-06 23:49	40m	- / -	EA5JAH	-7 / -	2	Partial capture
10-06 23:48	40m	- / -	DK5WL	+6 / -	3	Partial capture
10-06 23:46	40m	-16 / -	SP9Q	- / -16	2	✓ Closing fragment
10-06 23:44	40m	- / -	RA6ABC	0 / -	3	Partial capture
10-06 23:43	40m	- / -	DL1OBF	-16 / -	5	Partial capture
10-06 23:42	40m	-15 / -13	RD6OZ	-12 / -13	9	✓ Full exchange observed
10-06 23:41	40m	- / -14	UA6JQ	-10 / -	2	Partial capture
10-06 23:40	40m	-16 / -	K8EAC	- / -15	2	✓ Closing fragment
10-06 23:33	40m	- / -	UX1VT	-23 / -	3	Partial capture
10-06 23:33	40m	-17 / -	VO1ACZ	- / -14	2	✓ Closing fragment
10-06 23:32	40m	- / -13	UA6JQ	-10 / -	2	Partial capture
10-06 23:28	40m	-17 / -	9A6OY	- / -19	3	✓ Closing fragment
10-06 23:25	40m	- / -	DK5WL	+1 / -	3	Partial capture
10-06 23:25	40m	- / -	TA2EE	-18 / -	4	Partial capture
10-05 22:55	40m	-16 / -	DL2NBJ	-4 / -10	4	✓ Closing observed
10-05 22:53	40m	-17 / -	KE8LT	- / -13	2	✓ Closing fragment
10-05 22:53	40m	-17 / -	R6NA	+3 / -15	6	✓ Closing observed
10-05 22:50	40m	-18 / -6	F3CJ	-8 / -14	5	✓ Full exchange observed
10-05 22:48	40m	-18 / -	YD4AWV	- / -	3	Partial capture
10-05 22:40	40m	- / -	M0PEL	-4 / -	6	Partial capture
10-05 22:38	40m	- / -13	CT2HEX	-14 / -	2	✓ Closing fragment
10-05 22:38	40m	- / -	M9SND	-8 / -	5	Partial capture
10-05 22:36	40m	- / -	F3CJ	-10 / -	4	Partial capture
10-05 22:33	40m	- / -16	F1PBZ	-4 / -	3	Partial capture
10-05 22:25	40m	- / -15	DK2OCH	-10 / -	3	✓ Closing fragment
10-05 22:25	40m	- / -	MM0DXL	-14 / -	2	Partial capture
10-05 22:19	40m	- / -5	N2PKN	-20 / -	2	Partial capture
10-05 22:16	40m	-22 / -	V51WH	- / -	2	Partial capture
10-05 22:15	40m	-20 / -	YD4AWV	- / -	2	Partial capture
10-04 22:17	40m	- / -	HB9ZHK	-14 / -	3	Partial capture
10-04 20:00	40m	- / -	F6FDY	0 / -	5	Partial capture
10-03 23:33	40m	- / -	F4BYA	+3 / -	3	Partial capture
10-03 23:31	40m	-16 / -	UT0IN	- / -17	2	✓ Closing fragment
10-03 23:29	40m	-18 / -	KR0ZAL	- / -9	2	✓ Closing fragment
10-03 23:29	40m	- / -	F5OZK	-1 / -	4	Partial capture
10-03 23:28	40m	- / -	YO6LM	-15 / -	2	Partial capture
10-03 22:56	40m	- / -	F8CVF	-2 / -	4	Partial capture
10-03 22:54	40m	- / -9	K4DND	-4 / -	2	Partial capture
10-03 22:52	40m	-16 / -	KA3MAJ	- / -15	2	✓ Closing fragment
10-03 22:48	40m	- / -	M0PEL	0 / -	4	Partial capture
10-03 22:46	40m	- / -	EA7GNO	-20 / -	2	Partial capture
10-03 22:44	40m	- / -	MM0DXL	-14 / -	2	Partial capture
10-03 22:39	40m	- / -12	C31CT	0 / -	2	✓ Closing fragment
10-03 22:32	40m	- / -9	M9DNC	-13 / -	7	Partial capture
10-03 22:29	40m	- / -4	IZ4DYU	-9 / -	3	✓ Closing fragment
10-03 22:26	40m	- / -7	IU4WSH	-9 / -	3	✓ Closing fragment
10-03 22:26	40m	- / -	M7HET	-9 / -	2	Partial capture
10-03 22:24	40m	- / -	M1JYN	-8 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
234745 -15 1425  CQ NP4PR FK68 (x2)
234830  +9  592  NP4PR DK5WL JN39
234845 -16 1425  CQ NP4PR FK68
234900  +2  592  NP4PR DK5WL JN39
234915 -16 1424  CQ NP4PR FK68
234930  -7 1924  NP4PR EA5JAH IM99
234930  +8  592  NP4PR DK5WL JN39
235000  -7 1924  NP4PR EA5JAH IM99
235030 -15  983  NP4PR RA6FC LN13 (x2)
215130 -15 1422  NP4PR UA7XA LN13
215200 -15 1421  NP4PR M8RLJ IO94 (x3)

10m

UTC    dB Audio  Message
165415 -15 1190  NP4PR EA5BH IM98 (x7)
171515 -12 2697  NP4PR DM5CY JO42

80m

UTC    dB Audio  Message
233315  +0 1193  NP4PR GM1TGY -16 (x3)
223300  +7 1496  NP4PR UX7QV KN29 (x7)
223330  -5 1496  NP4PR DG0CFK JO52 (x5)

20m

UTC    dB Audio  Message
215815  -9 1553  DL9ATW NP4PR RR73
215915 -15 1553  Z62NS NP4PR FK68 (x2)
014500 -23 1560  CQ NP4PR FK68 (x2)
211030 -11 1110  NP4PR DL3MIB JN57 (x2)
212200 -19 1558  FK8HC NP4PR R-23
222115 -23 1554  CQ NP4PR FK68                         a1
222200 -18 1565  NP4PR DB1EF JO41
222215 -24 1554  CQ NP4PR FK68
222530  -5 2577  NP4PR F1PBZ -20
223330  -2  827  NP4PR PD0IFI JO32 (x2)
223400 -19 1478  NP4PR M7HET IO91

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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