KR4NJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States

Receiver-side FT8 activity involving KR4NJ, decoded by SO8OO in southeastern Poland. 1 FT8 messages attributed to this token as transmitter, on 20m, across 1 UTC dates in the available aggregate history. Last observed 2026-08-20.

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 1 FT8 messages attributed to KR4NJ as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The available sample contains attributed decodes on 20 m (100%). The sample is too small to infer a recurring UTC-hour or received-S/N pattern.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

S/N pattern not inferred

Bands

20m · 1

First attributed message: 2026-08-20
Last attributed message: 2026-08-20 21:28 UTC

Observed FT8 message patterns

Attributed sample: 1 messages
Active dates: 1 UTC dates
S/N summary: Too few decodes
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

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 KR4NJ in decoded directed-looking exchanges:

F6BIA · France UT7UJ · Ukraine NQ3N · United States

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	KR4NJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-17 23:39	40m	- / -	F4BYA	+2 / -	2	Partial capture
09-17 23:38	40m	- / -16	F4CQS	-7 / -	5	Partial capture
09-17 22:10	40m	- / -	F5NBU	+8 / -	4	Partial capture
09-17 22:10	40m	- / -5	NQ3N	-9 / -	2	✓ Closing fragment
08-23 12:07	20m	- / -	F4BYA	+7 / -	4	Partial capture
08-20 21:28	20m	-24 / -22	EA7UW	-17 / +3	2	Partial capture
08-20 21:27	20m	- / -7	UT7UJ	+11 / -	2	✓ Closing fragment
08-13 20:06	20m	- / -24	9A2CD	-10 / -	2	Partial capture
08-04 22:16	20m	- / -	IW2DNI	-5 / -	18	Partial capture
08-02 11:13	20m	- / -16	PA7Q	-17 / -	2	Partial capture
07-27 10:48	20m	- / -	DF3IS	-7 / -	4	Partial capture
07-27 10:39	20m	- / 0	GJ0KYZ	-7 / -	4	Partial capture
07-19 10:49	20m	- / -	F1PSX	-13 / -	7	Partial capture
07-19 10:47	20m	- / -	DK9ZQ	-13 / -	3	Partial capture
07-16 19:23	20m	- / -16	F6BIA	-22 / -	3	Partial capture
07-05 22:50	20m	- / -	EA1IOK	-10 / -	3	Partial capture
07-05 22:47	20m	- / -	UW8SM	-18 / -	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
221045 -10 2580  KR4NJ NQ3N -05
221045 +10 1815  KR4NJ F5NBU JN28
221115  -8 2580  KR4NJ NQ3N RR73
221115  +4 1815  KR4NJ F5NBU JN28 (x3)
233800  -4 1775  KR4NJ F4CQS -16 (x3)
233900  +8 2983  KR4NJ F4BYA JN19
233930  -6 1775  KR4NJ F4CQS -16
233930  -4 2984  KR4NJ F4BYA JN19
234000 -11 1775  KR4NJ F4CQS -16
234300 -15 2481  KR4NJ MI7XHT IO64

20m

UTC    dB Audio  Message
105445 -17 1870  KR4NJ F1PPH JN25
200600 -11 1380  KR4NJ 9A2CD -24 (x2)
143900 -13  913  KR4NJ MW3FLI -19
195200 -19 1500  KR4NJ IU2HUQ -15
212715 +12 1854  KR4NJ UT7UJ -07 (x2)
212800 -24 1853  EA7UW KR4NJ +03
212915 -17 1604  KR4NJ EA7UW R-22
111130 -18 1856  KR4NJ F1PPH JN07
120715  +7 2864  KR4NJ F4BYA JN19 (x4)
212245  -7 1855  KR4NJ DF1KW -20

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