K5EJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EM45

Receiver-side FT8 activity involving K5EJ, decoded by SO8OO in southeastern Poland. 27 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-09-14 and 2026-09-23.

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 27 FT8 messages attributed to K5EJ as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (96%), followed by 80 m (4%). In this small sample, the estimated median decoder S/N was -16 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-16 dB

Estimated median S/N

Bands

80m · 1 40m · 26

First attributed message: 2026-09-14
Last attributed message: 2026-09-23 00:29 UTC

Observed FT8 message patterns

Attributed sample: 27 messages
Active dates: 3 UTC dates
Estimated median S/N: -16 dB
Estimated 10th-90th percentile: -19 to -8 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 16, moderate (-15 to -9 dB) 8, strong (≥ -8 dB) 3.

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 K5EJ in decoded directed-looking exchanges:

9A4ZM · Croatia SP7NC · Poland TN8GD · Republic of the Congo DL1RWN · Fed. Rep. of Germany OK2SFP · Czech Republic RI1FJZ · Franz Josef Land

Most frequent locator attributed to K5EJ

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: EM45 · 5 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,454 km (approx.)
Last such locator decoded: 2026-09-16 02:49 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	K5EJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-23 00:31	80m	- / -17	DK7ZT	+12 / -	4	Partial capture
09-16 02:54	40m	- / -	DH1NSP	-14 / -	2	Partial capture
09-16 02:49	40m	-18 / -	RI1FJZ	- / -16	11	Partial capture
09-16 00:03	40m	-18 / -	TN8GD	- / -18	3	Partial capture
09-14 02:30	80m	- / 0	OK2SFP	+26 / -	7	✓ Closing fragment
09-14 02:28	80m	- / -22	DK7ZT	+5 / -	5	Partial capture
09-14 02:28	80m	- / +2	F5RRS	+2 / -	5	Partial capture
09-14 02:25	80m	- / -15	DL1RWN	+19 / -	6	✓ Closing fragment
09-14 02:18	80m	- / -16	GX4RAF/P	+12 / -	3	Partial capture
09-14 02:10	40m	-11 / -	SP7NC	- / -12	2	✓ Closing fragment
09-14 02:08	40m	-12 / -	RW9WT	-11 / -14	4	Partial capture
09-14 02:07	40m	-9 / -13	9A4ZM	-14 / -13	8	✓ Full exchange observed
09-14 02:06	40m	- / -	HB9TIH	-14 / -	4	Partial capture
09-14 02:04	40m	-13 / -	R6HV/P	- / -	3	Partial capture
08-07 02:52	40m	- / -	F5RRS	-10 / -	5	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
023015  +5 1113  K5EJ DK7ZT -22
023045 +28  327  K5EJ OK2SFP JN99
023045  +3 1943  K5EJ F5RRS R+02
023045  +3 1113  K5EJ DK7ZT -22
023115 +28  327  K5EJ OK2SFP JN99
023115  +3 1943  K5EJ F5RRS R+02
023145 +25  327  K5EJ OK2SFP JN99 (x4)
002945 -23 1202  RI1FJZ K5EJ RR73
003100 +14 1149  K5EJ DK7ZT -17 (x4)

40m

UTC    dB Audio  Message
000545 -19 1985  TN8GD K5EJ R-18 (x2)
024915 -19 1984  RI1FJZ K5EJ EM45 (x10)
025430 -13 2234  K5EJ DH1NSP JN59
025445 -19 1985  RI1FJZ K5EJ R-15
025530 -15 2234  K5EJ DH1NSP JN59

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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