NK5B — 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: United States Most frequent locator attributed to this token: EL96

Receiver-side FT8 activity involving NK5B, decoded by SO8OO in southeastern Poland. 52 FT8 messages attributed to this token as transmitter, on 80m, 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-08-14 and 2026-11-05.

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 52 FT8 messages attributed to NK5B 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 (52%), followed by 80 m (48%). Most decodes (100%) fell within the six-hour window 23:00-05:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

80m · 25 20m · 27

First attributed message: 2026-08-14
Last attributed message: 2026-11-05 23:43 UTC

Observed FT8 message patterns

Attributed sample: 52 messages
Active dates: 6 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -24 to +5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 17, moderate (-15 to -9 dB) 13, strong (≥ -8 dB) 22.

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 NK5B in decoded directed-looking exchanges:

EA5JLB · Spain CT7AUT · Portugal DO9BAU · Fed. Rep. of Germany EA1AUO · Spain HF1Z · Poland IK5CHL · Italy OM2WQ · Slovak Republic SP2BWI · Poland SP5AA · Poland TN8GD · Republic of the Congo UA4FKT · European Russia UT7UA · Ukraine

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 NK5B

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: EL96 · 42 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,634 km (approx.)
Last such locator decoded: 2026-11-05 23:19 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	NK5B S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-05 23:46	80m	- / -20	UA4FKT	+4 / -	6	✓ Closing fragment
11-05 23:45	80m	- / -15	YL3NU	-14 / -	2	Partial capture
11-05 23:42	80m	-19 / -	CT7AUT	-24 / -8	3	✓ Closing observed
11-05 23:41	80m	- / -	YL3NU	-16 / -	3	Partial capture
11-05 23:37	80m	-16 / -	G6PWS	-3 / -18	10	Partial capture
11-05 23:37	80m	- / -17	UT7UA	+11 / -	8	✓ Closing fragment
11-05 23:36	80m	-19 / -	UA4FKT	-2 / -9	2	Partial capture
11-05 23:35	80m	- / -11	OM2WQ	+12 / -	5	✓ Closing fragment
11-05 23:20	80m	- / -	PE2JMR	-12 / -	2	Partial capture
11-05 23:20	80m	- / -17	SP5AA	+15 / -	4	✓ Closing fragment
11-05 23:19	80m	- / -9	EA1AUO	-14 / -	2	✓ Closing fragment
11-05 23:16	80m	-22 / -	UN0GY	- / -	6	Partial capture
11-05 23:14	80m	- / -	DL2DBR	-4 / -	3	Partial capture
11-04 04:17	80m	-10 / -	UA9XL/P	- / -	2	Partial capture
10-28 00:59	80m	-12 / -	EU3AA	- / -6	2	Partial capture
10-12 21:21	40m	- / -19	EA5JLB	-14 / -	3	✓ Closing fragment
10-06 23:05	80m	- / -	PA3FPQ	+7 / -	3	Partial capture
10-06 23:04	80m	-15 / -15	HF1Z	+6 / -11	5	✓ Full exchange observed
10-06 23:01	80m	- / -11	SP2BWI	-5 / -	4	✓ Closing fragment
10-06 23:00	80m	-22 / -	9V1YC	- / -	5	Partial capture
08-28 00:26	80m	- / -16	Z35T	+3 / -	3	✓ Closing fragment
08-27 02:15	20m	+1 / -	RI1FJL	- / -	16	Partial capture
08-27 02:11	20m	- / -	I1RJP	+4 / -	2	Partial capture
08-27 02:05	20m	-9 / -	RI1FJL	- / -	11	Partial capture
08-22 00:49	20m	- / -	VU2SW	0 / -	4	Partial capture
08-14 02:03	80m	- / -	DO1NAE	-9 / -	8	Partial capture
08-14 02:02	80m	-14 / -	TN8GD	- / -14	2	✓ Closing fragment
08-14 02:00	80m	- / -15	DO9BAU	-2 / -	4	✓ Closing fragment
08-14 01:56	80m	- / -10	IK5CHL	-5 / -	5	✓ Closing fragment
08-14 01:55	80m	-17 / -	TN8GD	- / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
234200 -20 2254  CT7AUT NK5B -08
234215 -13 1678  NK5B YL3NU KO27
234230 -18 2253  CT7AUT NK5B RR73
234245 -24 1678  NK5B YL3NU KO27
234245 -24 1427  NK5B CT7AUT 73
234300 -16 2254  G6PWS NK5B -18
234515 -14 1678  NK5B YL3NU R-15 (x2)
234615 +10 2254  NK5B UA4FKT LO23 (x6)
235015  -8 2134  NK5B SI4A JO69

40m

UTC    dB Audio  Message
212115 -10 2340  NK5B EA5JLB -19 (x3)

20m

UTC    dB Audio  Message
021545  +1 2927  RI1FJL NK5B EL96 (x15)

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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