KJ5BNW — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EM25

Receiver-side FT8 activity involving KJ5BNW, decoded by SO8OO in southeastern Poland. 20 FT8 messages attributed to this token as transmitter, on 20m, across 1 UTC dates in the available aggregate history. Last observed 2026-06-17.

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 20 FT8 messages attributed to KJ5BNW as the transmitting token by decoded message structure across 1 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 -17 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-17 dB

Estimated median S/N

Bands

20m · 20

First attributed message: 2026-06-17
Last attributed message: 2026-06-17 02:55 UTC

Observed FT8 message patterns

Attributed sample: 20 messages
Active dates: 1 UTC dates
Estimated median S/N: -17 dB
Estimated 10th-90th percentile: -20 to -13 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 13, moderate (-15 to -9 dB) 7, 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 KJ5BNW in decoded directed-looking exchanges:

PI4DX · Netherlands ×2 5B4AMM · Cyprus MI0JZZ · Northern Ireland RW0SR · Asiatic Russia RW9WT · Asiatic Russia DM5LA · Fed. Rep. of Germany 9A5E · Croatia CR7BRV · Portugal CT3MD · Madeira Islands HB9CXZ · Switzerland KP2B · US Virgin Islands

Most frequent locator attributed to KJ5BNW

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: EM25 · 19 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,671 km (approx.)
Last such locator decoded: 2026-06-17 02:55 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	KJ5BNW S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-29 01:28	80m	- / -17	CT3MD	-9 / -	9	✓ Closing fragment
08-27 03:25	80m	- / -	SQ1X	+14 / -	2	Partial capture
08-20 15:02	20m	- / -16	RW0SR	-8 / -	2	✓ Closing fragment
08-09 03:55	80m	- / -	EA7AH	-24 / -	2	Partial capture
08-09 03:49	80m	- / -15	CR7BRV	-7 / -	2	✓ Closing fragment
08-09 03:44	80m	- / -13	CR7BRV	-3 / -	2	Partial capture
08-08 20:39	20m	- / -10	PI4DX	-17 / -	2	✓ Closing fragment
08-08 04:50	40m	- / -10	DM5LA	-2 / -	3	✓ Closing fragment
08-08 02:38	20m	- / -20	RW9WT	-16 / -	2	✓ Closing fragment
08-07 04:47	40m	- / -11	IK4RVY	-24 / -	2	Partial capture
08-05 01:38	80m	- / -20	HB9CXZ	+18 / -	2	✓ Closing fragment
07-26 04:07	40m	- / -24	IK2PZX	-18 / -	2	Partial capture
07-21 11:52	20m	- / -15	MI0JZZ	-8 / -	4	✓ Closing fragment
07-17 01:38	20m	- / -24	HZ1TT	-6 / -	3	Partial capture
07-17 01:30	20m	- / -17	HZ1TT	-6 / -	3	Partial capture
07-17 01:23	20m	- / -16	HZ1TT	-6 / -	3	Partial capture
07-15 23:12	20m	- / -19	5B4AMM	-11 / -	3	✓ Closing fragment
07-11 03:53	40m	- / -25	PI4DX	0 / -	3	✓ Closing fragment
07-11 03:53	40m	- / -17	DG1KPC	-9 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
035530 -24 1811  KJ5BNW EA7AH IM67 (x2)
031645  +2 2134  KJ5BNW 9A5E RR73
032530 +13 1247  KJ5BNW SQ1X JO74 (x2)
034445 -24 1704  KJ5BNW KP2B RR73
012815 -11 1105  KJ5BNW CT3MD IM13 (x9)

20m

UTC    dB Audio  Message
013845  -4 1762  KJ5BNW HZ1TT -24 (x3)
115230  -9 2533  KJ5BNW MI0JZZ -15 (x4)
012300 -19 1247  KJ5BNW IU8NKW -11
023830 -14 2172  KJ5BNW RW9WT R-20 (x2)
024330 -23 1757  KJ5BNW CN8NS -12
203900 -16 2254  KJ5BNW PI4DX -10 (x2)
150215  -8 2768  KJ5BNW RW0SR -16 (x2)

40m

UTC    dB Audio  Message
035315  -4 2373  KJ5BNW DG1KPC JO30
035345  +1 2256  KJ5BNW PI4DX -25
035345  -8 2374  KJ5BNW DG1KPC -17
035415  -4 2256  KJ5BNW PI4DX -25 (x2)
035445 -14 1541  KJ5BNW DG1KPC -17
040700 -17 1129  KJ5BNW IK2PZX -24 (x2)
044415 -24 1850  KJ5BNW IK4RVY -11 (x3)
044600 -23 1603  KJ5BNW G5TV IO93
045030  -2 1376  KJ5BNW DM5LA JN59 (x3)

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