KR4EJY — 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: EL89

Receiver-side FT8 activity involving KR4EJY, decoded by SO8OO in southeastern Poland. 5 FT8 messages attributed to this token as transmitter, on 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-09-30 and 2026-10-03.

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 5 FT8 messages attributed to KR4EJY as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was -21 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-21 dB

Estimated median S/N

Bands

40m · 5

First attributed message: 2026-09-30
Last attributed message: 2026-10-03 02:03 UTC

Observed FT8 message patterns

Attributed sample: 5 messages
Active dates: 2 UTC dates
Estimated median S/N: -21 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 0, 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 KR4EJY in decoded directed-looking exchanges:

3Z4DX · Poland EA8AR · Canary Islands F4FPR · France F8MRQ · France PI4DX · Netherlands PV8AJ · Brazil

Most frequent locator attributed to KR4EJY

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: EL89 · 2 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,504 km (approx.)
Last such locator decoded: 2026-10-03 01:45 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	KR4EJY S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-13 23:54	40m	- / -3	F8MRQ	-1 / -	5	✓ Closing fragment
10-13 23:51	40m	- / -16	F4FPR	-6 / -	6	✓ Closing fragment
10-13 23:43	40m	- / -	F8MRQ	-4 / -	2	Partial capture
10-03 02:04	40m	- / -	RN6HK	-6 / -	4	Partial capture
10-03 02:03	40m	- / -	RD3FY	+5 / -	3	Partial capture
10-03 01:59	40m	- / -	PE1NPS	+11 / -	3	Partial capture
10-03 01:59	40m	- / -	F5PBG	-12 / -	2	Partial capture
10-03 01:58	40m	- / -	PA3KUS	-6 / -	12	Partial capture
10-03 01:45	40m	-23 / -	3Z4DX	-9 / -	3	✓ Closing observed
10-03 01:30	40m	- / -	F4BYA	+14 / -	4	Partial capture
10-03 01:26	40m	- / -	F4BYA	+16 / -	4	Partial capture
10-03 01:26	40m	- / -	F6FDY	-7 / -	3	Partial capture
10-03 01:23	40m	- / -10	F1PBZ	-8 / -	4	Partial capture
10-03 01:21	40m	- / -	PA3KUS	-3 / -	10	Partial capture
09-30 23:54	40m	- / -9	VE3CM	-11 / -	3	Partial capture
09-30 23:48	40m	- / -7	G8KHF	-5 / -	5	Partial capture
09-30 23:43	40m	- / -9	PV8AJ	-18 / -	3	✓ Closing fragment
09-30 23:25	40m	- / -	PA3KUS	-4 / -	5	Partial capture
09-30 23:06	40m	- / -	PA3KUS	-2 / -	5	Partial capture
09-29 01:33	40m	- / -9	F1PBZ	-1 / -	4	Partial capture
09-29 01:23	40m	- / +5	PI4DX	+10 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
020645  -8  579  KR4EJY PA3KUS JO21
234330  -7 2507  KR4EJY F8MRQ JN17 (x2)
235115  -3 2527  KR4EJY F4FPR IN88 (x6)
235415  -7 2525  KR4EJY F8MRQ JN17 (x5)
000215 -18 1785  KR4EJY EA8AR RR73

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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