EJ8JCB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Ireland Most frequent locator attributed to this token: IO53

Receiver-side FT8 activity involving EJ8JCB, decoded by SO8OO in southeastern Poland. 387 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 24 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-04.

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 387 FT8 messages attributed to EJ8JCB as the transmitting token by decoded message structure across 24 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (66%), followed by 80 m (26%) and 40 m (5%). Most decodes (80%) fell within the six-hour window 19:00-01:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

387

Messages attributed

UTC dates decoded

Active 15-min windows

-8 dB

Estimated median S/N

Bands

80m · 100 60m · 13 40m · 19 20m · 255

First attributed message: 2026-06-07
Last attributed message: 2026-09-04 22:22 UTC

Observed FT8 message patterns

Attributed sample: 387 messages
Active dates: 24 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -16 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 46, moderate (-15 to -9 dB) 132, strong (≥ -8 dB) 209.

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 EJ8JCB in decoded directed-looking exchanges:

DF7EF · Fed. Rep. of Germany ×3 EC3A · Spain ×2 GJ6WRI · Jersey ×2 RI1FJL · Franz Josef Land ×2 TF3VS · Iceland ×2 YO4NF · Romania ×2 9A3K · Croatia 9K2YM · Kuwait CT1FOE · Portugal EA6UE · Balearic Islands EW8DU · Belarus IZ0MIT · Italy

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 EJ8JCB

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: IO53 · 140 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,140 km (approx.)
Last such locator decoded: 2026-08-31 18:20 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	EJ8JCB S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-04 22:22	40m	-10 / -	NP4EI	- / -25	2	Partial capture
09-04 22:21	40m	-8 / -2	RI1FJL	-6 / +2	3	✓ Full exchange observed
09-03 20:27	40m	-5 / -9	PA3KUS	-7 / -	4	✓ Closing observed
09-03 20:26	40m	- / -13	F4IFO	-3 / -	3	✓ Closing fragment
09-03 20:24	80m	- / -	PC5H	-4 / -	2	Partial capture
09-03 20:23	80m	-22 / -	YO4GIY	- / -12	2	Partial capture
09-03 20:22	80m	- / -5	PA3EVY	+9 / -	4	Partial capture
09-02 18:03	40m	- / -7	ON4APU	+4 / -	2	✓ Closing fragment
08-30 22:47	80m	- / -13	5P1KZX	+4 / -	2	✓ Closing fragment
08-30 22:45	80m	- / -	IK5CHL	-4 / -	2	Partial capture
08-30 22:44	80m	-8 / -14	GJ6WRI	-24 / -24	4	✓ Full exchange observed
08-30 22:43	80m	-8 / -15	ON1BH	-18 / -19	4	✓ Full exchange observed
08-30 22:42	80m	-13 / -18	SM7TZK	-8 / +3	4	✓ Full exchange observed
08-30 21:56	20m	+6 / -	CU2JX	- / -12	2	Partial capture
08-30 21:27	40m	-9 / -16	YO4NF	+14 / -19	6	✓ Full exchange observed
08-30 21:26	40m	-10 / -9	EC3A	-6 / +4	3	✓ Full exchange observed
08-30 21:25	40m	-8 / -9	OE9NET	0 / -	3	✓ Closing observed
08-30 21:23	80m	-9 / -7	SH0T	-4 / -1	2	Partial capture
08-30 21:22	80m	-16 / -7	F5MXH	-7 / -	3	✓ Closing observed
08-30 21:21	80m	-8 / -20	DH4BM	+7 / -18	5	✓ Full exchange observed
08-30 20:06	20m	-6 / -	4L7T	- / +1	2	Partial capture
08-30 20:03	20m	- / -	EB3JT	+10 / -	7	Partial capture
08-30 20:02	20m	-7 / -	9A3K	- / -16	2	✓ Closing fragment
08-30 20:01	20m	-6 / -	OZ1BUR	- / +2	2	✓ Closing fragment
08-30 19:45	40m	-9 / -9	OZ7CL	+7 / -	3	✓ Closing observed
08-30 19:43	40m	-8 / -	PD1AC	-3 / -2	3	Partial capture
08-30 19:42	40m	-7 / -1	DF7EF	+15 / -	4	✓ Closing observed
08-30 19:42	40m	-10 / -	2I0WMN	- / 0	2	✓ Closing fragment
08-30 19:39	60m	-6 / -12	SV1EKI	0 / -18	5	✓ Full exchange observed
08-30 19:38	60m	-8 / -4	IK4CBO	-9 / -12	5	✓ Full exchange observed
08-30 19:37	60m	-8 / -	DK6AH	- / -25	2	✓ Closing fragment
08-30 19:35	60m	- / -	DK7UY	-4 / -	2	Partial capture
08-30 19:35	60m	-8 / -7	LY7Z	-10 / -	5	✓ Closing observed
08-30 19:33	60m	- / -6	EW6BZ	-2 / -	2	✓ Closing fragment
08-30 19:32	80m	- / -19	MW0AXD	-18 / -	2	Partial capture
08-30 19:31	80m	- / -22	RA2FU	-5 / -	4	✓ Closing fragment
08-30 19:26	80m	-15 / -23	HB0WR	+14 / +3	4	✓ Full exchange observed
08-30 18:08	20m	- / -	IW1PVT	-2 / -	2	Partial capture
08-30 16:41	20m	-16 / -	N6TA	- / -25	3	✓ Closing fragment
08-30 16:05	20m	- / -	IU6VLP	-12 / -	2	Partial capture
08-30 16:03	20m	-10 / -	CT1FOE	- / +5	2	✓ Closing fragment
08-30 15:51	20m	-9 / -	CT1FOE	-6 / +3	3	Partial capture
08-30 15:46	20m	-3 / -	EP2AES	- / -16	5	Partial capture
08-29 14:26	20m	-5 / -	RI1FJL	- / -16	3	✓ Closing fragment
08-29 14:24	20m	-10 / -20	RA3DAD	-23 / -	2	✓ Closing observed
08-28 20:45	20m	+11 / -	PY5QW	- / -11	3	Partial capture
08-28 19:37	20m	- / -	CT1FOE	+3 / -	3	Partial capture
08-28 19:24	20m	-6 / -	EA8UP	- / -	2	Partial capture
08-23 13:49	40m	- / -2	PE9JAN	-8 / -	2	✓ Closing fragment
08-21 00:14	80m	- / -	F1UGD	-3 / -	10	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
180330  +3  758  EJ8JCB ON4APU 73
202630  -1  864  EJ8JCB F4IFO JN29
202700 -14 1426  EJ8JCB UG4P -15
202700  -5  864  EJ8JCB F4IFO R-13
202730  -6  742  EJ8JCB PA3KUS JO21
202730  -3  864  EJ8JCB F4IFO 73
202830  -6  743  EJ8JCB PA3KUS R-09
202845  -5 2690  PA3KUS EJ8JCB RR73
202900  -9  742  EJ8JCB PA3KUS 73
222115  -8  541  RI1FJL EJ8JCB +02
222130  -6  446  EJ8JCB RI1FJL R-02
222145  -8  541  RI1FJL EJ8JCB RR73
222200  -9  446  EJ8JCB RR73; IZ1JIZ <...> -12
222215  -8  541  NP4EI EJ8JCB -25 (x2)

80m

UTC    dB Audio  Message
224515 -11  503  GJ6WRI EJ8JCB RR73
224530 -24  690  EJ8JCB GJ6WRI 73
224630  +5 1558  EJ8JCB IK5CHL JN53
224715  +4  619  EJ8JCB 5P1KZX R-13 (x2)
225300 -13  503  KP4AA EJ8JCB +01
202230  +7 2500  EJ8JCB PA3EVY R-05
202300 -23 2303  YO4GIY EJ8JCB -12
202300  +8 2500  EJ8JCB PA3EVY R-05
202330 -21 2303  YO4GIY EJ8JCB -12
202330 +10 2500  EJ8JCB PA3EVY R-05 (x2)
202415  +3  576  EJ8JCB RX3DTN KO85
202445  -6  946  EJ8JCB PC5H JO23 (x2)

20m

UTC    dB Audio  Message
200315 +10  529  EJ8JCB EB3JT JN01 (x7)
200630  -4  729  4L7T EJ8JCB +01 (x2)
214615  -5  680  TJ1GD EJ8JCB -10
215645  +8  680  CU2JX EJ8JCB -12 (x2)
221115 -14 2017  EJ8JCB ZZ2DX R-17
181230  -7 1180  EJ8JCB IK3OCD -07
182030 -10  377  CQ DX EJ8JCB IO53

60m

UTC    dB Audio  Message
193700 -10 1268  EJ8JCB LY7Z 73
193715  -8  634  DK6AH EJ8JCB -25 (x2)
193800 -10 2141  EJ8JCB IK4CBO JN54
193815  -7  634  IK4CBO EJ8JCB -12
193830  -9 2141  EJ8JCB IK4CBO R-04
193845 -10  634  IK4CBO EJ8JCB RR73
193900  -9 2141  EJ8JCB IK4CBO 73
193915  -9  634  OH6FSO EJ8JCB -25
193930  -1 2463  EJ8JCB SV1EKI KM18
193945  -6  633  SV1EKI EJ8JCB -18
194000  -1 2464  EJ8JCB SV1EKI R-12
194015  -6  634  SV1EKI EJ8JCB RR73
194030  +2 2463  EJ8JCB SV1EKI 73
194130  -4 2805  EJ8JCB OH6FSO R-10

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.

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