EA3CJ — 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: Spain Most frequent locator attributed to this token: JN01

Receiver-side FT8 activity involving EA3CJ, decoded by SO8OO in southeastern Poland. 469 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 27 UTC dates in the available aggregate history. Observed between 2026-06-07 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 469 FT8 messages attributed to EA3CJ as the transmitting token by decoded message structure across 27 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (45%), followed by 80 m (20%) and 60 m (15%). Several six-hour UTC windows tied for the largest share (50%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7 dB.

Overview

469

Messages attributed

UTC dates decoded

Active 15-min windows

-7 dB

Estimated median S/N

Bands

160m · 212 80m · 96 60m · 72 40m · 8 20m · 70 10m · 11

First attributed message: 2026-06-07
Last attributed message: 2026-11-05 06:16 UTC

Observed FT8 message patterns

Attributed sample: 469 messages
Active dates: 27 UTC dates
Estimated median S/N: -7 dB
Estimated 10th-90th percentile: -18 to +4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 83, moderate (-15 to -9 dB) 129, strong (≥ -8 dB) 257.

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 EA3CJ in decoded directed-looking exchanges:

RI1FJL · Franz Josef Land ×3 RI1FJZ · Franz Josef Land ×2 9T0MD · Dem. Rep. of the Congo EB5AFK · Spain F4HSB · France IK4CBO · Italy K1JEA · United States KA9FOX · United States KD3CLB · United States S9R · Sao Tome & Principe SM7WNM · Sweden 9A2WA · Croatia

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 EA3CJ

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: JN01 · 403 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,858 km (approx.)
Last such locator decoded: 2026-11-05 06:16 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	EA3CJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-04 06:22	80m	-12 / -	AK8A	- / -	7	Partial capture
11-04 06:18	80m	-8 / -	AK8A	- / -	4	Partial capture
11-04 06:12	80m	+1 / -	N3FMC	- / -	2	Partial capture
11-04 06:10	80m	-5 / -	NE5TX	- / -9	3	✓ Closing fragment
11-04 06:07	80m	-4 / -	9A2WA	- / -21	2	✓ Closing fragment
11-04 06:05	80m	-8 / -	AA6AA	- / -19	3	Partial capture
11-04 06:02	80m	-5 / -4	T77RN	-21 / -	4	Partial capture
11-04 05:57	80m	-4 / -	N3FMC	- / -	2	Partial capture
11-04 05:56	80m	-2 / -	N8PFK	- / -	2	Partial capture
11-04 05:53	80m	0 / -	KO3ZDE	- / -7	3	✓ Closing fragment
11-04 05:50	80m	+1 / -	W3FAY	- / -11	4	✓ Closing fragment
11-04 05:37	80m	0 / -	WF4DX	- / -	9	Partial capture
11-04 05:35	80m	+3 / -	WD4OBP	- / -	2	Partial capture
11-04 05:33	80m	+5 / -	KA1MXL	- / -23	3	✓ Closing fragment
11-03 05:51	80m	-4 / -	K3HPA	- / -14	5	✓ Closing fragment
11-02 06:25	40m	+6 / -	II4GCLB	- / -13	2	Partial capture
10-31 08:37	40m	-4 / -	LZ26IPA	- / -	3	Partial capture
10-30 06:00	60m	-1 / -	F4HSB	-21 / -	4	✓ Closing observed
10-30 06:00	60m	-2 / -1	SM7WNM	-21 / -1	3	✓ Full exchange observed
10-30 05:58	60m	+3 / -	6W/IK2HKT	- / -5	4	Partial capture
10-28 06:04	60m	+2 / -	S9R	- / -17	3	✓ Closing fragment
10-15 18:56	160m	-15 / -	H49A	- / -16	14	Partial capture
10-15 18:01	160m	-23 / -	H49A	- / -	4	Partial capture
10-15 17:54	160m	-24 / -	H49A	- / -	5	Partial capture
10-15 17:49	160m	-20 / -	H49A	- / -	2	Partial capture
10-15 17:44	160m	- / -	DK9BF	-8 / -	5	Partial capture
10-15 17:33	160m	-21 / -	H49A	- / -	5	Partial capture
10-11 18:29	60m	-3 / -	H49A	- / -	10	Partial capture
10-11 18:26	60m	-6 / -	H49A	- / -	2	Partial capture
10-08 05:44	60m	-13 / -	KA9FOX	- / -10	3	✓ Closing fragment
10-03 05:06	60m	-2 / -	9T0MD	- / -15	9	✓ Closing fragment
10-02 05:23	60m	+4 / -	9T0MD	- / -	2	Partial capture
10-02 05:19	60m	+6 / -	9T0MD	- / -	2	Partial capture
10-02 05:05	60m	0 / -	9T0MD	- / -	17	Partial capture
09-19 23:04	160m	- / -10	RI1FJZ	-18 / -	2	✓ Closing fragment
09-19 21:47	80m	-1 / -	RI1FJZ	- / -8	5	✓ Closing fragment
09-12 05:47	60m	-13 / -	IK4CBO	-10 / -	4	✓ Closing observed
09-12 05:45	60m	-13 / -	EB5AFK	- / -8	4	✓ Closing fragment
09-12 05:43	60m	- / -	IK4CBO	-12 / -	2	Partial capture
09-12 05:40	60m	-12 / -	K1JEA	- / -12	6	✓ Closing fragment
09-12 05:36	60m	-12 / -	KD3CLB	- / -14	5	✓ Closing fragment
09-04 22:39	160m	-13 / -	RI1FJL	- / -11	11	✓ Closing fragment
09-04 22:20	160m	-9 / -	RI1FJL	- / -	24	Partial capture
09-04 21:51	160m	-4 / -	RI1FJL	- / -	17	Partial capture
09-04 21:26	160m	-9 / -	RI1FJL	- / -	31	Partial capture
09-04 21:17	160m	-8 / -	RI1FJL	- / -	5	Partial capture
09-04 21:11	160m	-12 / -	RI1FJL	- / -	6	Partial capture
09-04 20:47	160m	-14 / -	RI1FJL	- / -	4	Partial capture
09-04 20:32	160m	-18 / -	RI1FJL	- / -	2	Partial capture
09-04 19:43	160m	-14 / -	RI1FJL	- / -	17	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
061245  +0 2642  N3FMC EA3CJ JN01 (x2)
061830 -10 2641  AK8A EA3CJ JN01 (x11)
062815 -11 2331  LZ911TD EA3CJ JN01
061630 -13 2125  KD0BTO EA3CJ JN01

40m

UTC    dB Audio  Message
083545  -3  322  PH26BOO EA3CJ JN01
083715  -4  335  LZ26IPA EA3CJ JN01 (x3)
062515  +7  399  II4GCLB EA3CJ JN01 (x2)

60m

UTC    dB Audio  Message
183415  -5  285  H49A EA3CJ JN01
060445  +1  535  S9R EA3CJ JN01 (x3)
055815  +1  303  6W/IK2HKT EA3CJ JN01 (x4)
060030 -21 1358  EA3CJ SM7WNM -01
060030 -18 1602  EA3CJ F4HSB JN37
060045  -3  304  SM7WNM EA3CJ R-01
060100 -22 1602  EA3CJ F4HSB JN37
060115  +0  304  SM7WNM EA3CJ 73
060215  -1  303  F4HSB EA3CJ RR73
060230 -23 1601  EA3CJ F4HSB 73

160m

UTC    dB Audio  Message
180545 -21 1846  H49A EA3CJ JN01 (x15)

20m

UTC    dB Audio  Message
055900 -14 2530  T2JK EA3CJ JN01 (x4)

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

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee