EB4SM — 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: IN80

Receiver-side FT8 activity involving EB4SM, decoded by SO8OO in southeastern Poland. 809 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 63 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-22.

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 809 FT8 messages attributed to EB4SM as the transmitting token by decoded message structure across 63 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (49%), followed by 20 m (41%) and 40 m (10%). Most decodes (80%) fell within the six-hour window 20:00-02:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.

Overview

809

Messages attributed

UTC dates decoded

137

Active 15-min windows

-12 dB

Estimated median S/N

Bands

80m · 396 60m · 2 40m · 80 20m · 331

First attributed message: 2026-06-06
Last attributed message: 2026-10-22 21:47 UTC

Observed FT8 message patterns

Attributed sample: 809 messages
Active dates: 63 UTC dates
Estimated median S/N: -12 dB
Estimated 10th-90th percentile: -20 to -2.5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 242, moderate (-15 to -9 dB) 309, strong (≥ -8 dB) 258.

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 EB4SM in decoded directed-looking exchanges:

EA2EES · Spain ×2 F8FUA · France LX1JX · Luxembourg 9A5E · Croatia BA8BLK · China BG7BMG · China EA4IBN · Spain EA5HM · Spain F1PBZ · France JR2SHA · Japan JT1BZ · Mongolia R4FDW · European Russia

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 EB4SM

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: IN80 · 525 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,193 km (approx.)
Last such locator decoded: 2026-10-22 21:47 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	EB4SM S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-22 21:44	80m	-11 / -	UN3P	- / -	4	Partial capture
10-22 21:41	80m	-8 / -20	OE3LQA	+8 / -14	4	✓ Full exchange observed
10-22 21:39	80m	-10 / -7	OH5XB	+6 / -	4	✓ Closing observed
10-22 06:24	40m	-18 / -	TO4A	- / -	5	Partial capture
10-22 06:22	40m	-21 / -	C5R	- / -	3	Partial capture
10-12 20:05	80m	-16 / -	LB8TG	- / -17	4	✓ Closing fragment
10-08 22:16	80m	-6 / -11	LY2HM	+10 / -16	2	Partial capture
10-08 21:26	80m	-9 / -5	T77RN	-2 / -22	5	✓ Full exchange observed
10-08 21:15	80m	-11 / -	J48S	- / -11	5	Partial capture
10-08 21:00	80m	-19 / -11	OH8WW	-5 / -14	6	✓ Full exchange observed
10-04 21:39	80m	-14 / -10	R2AL	+12 / -11	6	✓ Full exchange observed
10-04 21:38	80m	-15 / -14	SP5UFK	-3 / -11	5	✓ Full exchange observed
10-04 21:30	80m	- / -11	IQ9SZ	-24 / -	2	✓ Closing fragment
10-04 21:26	80m	-10 / -	BD8CS	- / -	2	Partial capture
10-03 21:04	80m	- / -11	OK2SPZ	+12 / -	2	✓ Closing fragment
10-03 20:57	80m	- / 0	SP2BBQ	-6 / -	2	✓ Closing fragment
10-03 01:30	80m	-12 / -	YO8RSL	- / -	6	Partial capture
10-03 00:41	80m	-12 / -	VE3HLM	- / -15	2	Partial capture
10-03 00:39	80m	- / -	R3ICU	-10 / -	2	Partial capture
10-03 00:27	80m	-15 / -	V26K	- / -	18	✓ Closing fragment
10-03 00:22	80m	-13 / -	V26K	- / -	2	Partial capture
10-03 00:06	80m	-8 / -	HI8JCD	- / -	7	Partial capture
10-02 23:56	80m	-8 / -	HI8JCD	- / -	5	Partial capture
10-02 23:52	80m	- / -	DO5AX	-16 / -	2	Partial capture
10-02 23:42	80m	- / -2	SP9GCZ	+14 / -	2	✓ Closing fragment
10-02 23:22	80m	- / -8	EC3A	-12 / -	2	Partial capture
10-02 23:21	80m	- / -1	LA5ZUA	-15 / -	3	✓ Closing fragment
10-02 23:12	80m	- / -8	4X1VL	-15 / -	3	✓ Closing fragment
10-02 23:11	80m	-7 / -	TA4SSK	- / -12	3	✓ Closing fragment
10-02 23:08	80m	-4 / -8	OH5KNL	+12 / -8	5	✓ Full exchange observed
10-02 22:55	80m	- / -	R3ICU	-9 / -	2	Partial capture
10-02 22:54	80m	-6 / -19	7Z1IS	-12 / -10	4	✓ Full exchange observed
10-02 21:31	40m	-16 / -	T77R	- / -	3	Partial capture
09-30 21:33	80m	-10 / -	EW4M	- / -	3	Partial capture
09-30 21:25	80m	-12 / -7	LA6MNA	+6 / -	5	✓ Closing observed
09-30 20:52	80m	- / -13	DO8JB	0 / -	6	✓ Closing fragment
09-30 20:49	80m	-11 / -21	R6HV	-2 / -13	5	✓ Full exchange observed
09-30 20:35	80m	-12 / -	R6HV	- / -	2	Partial capture
09-29 22:31	80m	-10 / -	TN8GD	- / -20	3	✓ Closing fragment
09-29 22:29	80m	-14 / -4	ON1BH	-4 / -	3	✓ Closing observed
09-29 22:27	80m	-14 / 0	F4CTJ	-2 / +1	7	✓ Full exchange observed
09-29 21:54	40m	-11 / -	VK6BAD	- / -	2	Partial capture
09-28 21:01	80m	-20 / -	CN8WK	- / -	6	Partial capture
09-28 20:26	80m	- / -	HA7XL	+14 / -	6	Partial capture
09-27 19:40	80m	-7 / -3	T77RN	-12 / -	3	Partial capture
09-25 21:06	80m	-11 / -	F2VX/P	- / +2	3	✓ Closing fragment
09-23 22:53	80m	- / -	EC3A	-7 / -	3	Partial capture
09-23 22:50	80m	-8 / -	KP4AA	- / -24	6	✓ Closing fragment
09-22 23:23	160m	- / -11	LX1JX	+2 / -	2	✓ Closing fragment
09-20 00:39	60m	- / -10	J48S	0 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
200615 -12 1842  LB8TG EB4SM R-17 (x2)
213930 -12 1950  OH5XB EB4SM IN80 (x2)
214015  +6 1842  EB4SM OH5XB -07 (x2)
214145  +7 1367  EB4SM OE3LQA JN78
214145 -16 1261  EB4SM EB4FSM R+10
214230  -8 1948  OE3LQA EB4SM -14
214245  +8 1367  EB4SM OE3LQA R-20
214300  -7 1948  OE3LQA EB4SM RR73
214445 -14 1948  UN3P EB4SM IN80 (x4)

40m

UTC    dB Audio  Message
214545 -12 1239  GM5DNA EB4SM 73
230730 -17 1763  D2ACE EB4SM 73
215400 -15 1881  VK6BAD EB4SM IN80 (x2)
213145 -17 1394  T77R EB4SM IN80 (x3)
062215 -19 1659  C5R EB4SM IN80 (x3)
062445 -17 1595  TO4A EB4SM IN80 (x5)

160m

UTC    dB Audio  Message
232315  +1 2707  EB4SM LX1JX -11 (x2)
233300 -23 1807  EB4SM EA8BS -22 (x2)
220645 -13 1436  EB4SM F8FUA RR73

60m

UTC    dB Audio  Message
220300 -14 2445  R70OBN EB4SM IN80
004415  +1 1458  EB4SM DL1UDO JO31 (x2)
004830 -19 1280  EA2EES EB4SM 73
222530  +7 2029  EB4SM ER3ZW -08 (x2)
221930  +0  642  EB4SM OJ0JR -10 (x2)
003930  -1  584  EB4SM J48S -10 (x2)

20m

UTC    dB Audio  Message
000400 -17 1501  BG0EMF EB4SM IN80 (x2)
000630 -19 1500  BA9TX EB4SM IN80 (x2)
001245 -12 1500  BD8ABR EB4SM IN80 (x11)

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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