EA3ISZ — 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 EA3ISZ, decoded by SO8OO in southeastern Poland. 1,216 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 67 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 1,216 FT8 messages attributed to EA3ISZ as the transmitting token by decoded message structure across 67 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (31%), followed by 60 m (26%) and 20 m (24%). The busiest six-hour window was 18:00-00:00 UTC, containing 44% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -17 dB.

Overview

1,216

Messages attributed

UTC dates decoded

296

Active 15-min windows

-17 dB

Estimated median S/N

Bands

80m · 378 60m · 311 40m · 91 20m · 287 10m · 149

First attributed message: 2026-06-07
Last attributed message: 2026-11-05 23:22 UTC

Observed FT8 message patterns

Attributed sample: 1,216 messages
Active dates: 67 UTC dates
Estimated median S/N: -17 dB
Estimated 10th-90th percentile: -23 to -9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 713, moderate (-15 to -9 dB) 396, strong (≥ -8 dB) 107.

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 EA3ISZ in decoded directed-looking exchanges:

F5NAA · France ×2 F8ATS · France ×2 G4IRN · England ×2 ON1DGN · Belgium ×2 DL9KM · Fed. Rep. of Germany ×2 F1PBZ · France ×2 F4MZI · France ×2 GJ0KYZ · Jersey ×2 IN3WZS · Italy ×2 IU0POV · Italy ×2 OZ7KJ/P · Denmark ×2 PA3T · Netherlands ×2

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 EA3ISZ

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 · 898 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,858 km (approx.)
Last such locator decoded: 2026-11-05 23:21 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	EA3ISZ S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-06 06:33	60m	- / +2	PA7RA	-12 / -	3	✓ Closing fragment
11-06 06:25	60m	- / +2	F5RMK	-12 / -	2	✓ Closing fragment
11-05 23:21	60m	-22 / +3	ON1JP	-20 / -9	3	✓ Full exchange observed
11-05 23:08	60m	-17 / -5	IU8LMC	-17 / -15	7	✓ Full exchange observed
11-05 23:03	60m	-19 / -10	UN7EG	-22 / -	5	Partial capture
11-05 22:55	60m	- / -14	F1IQH	-6 / -	2	✓ Closing fragment
11-05 22:52	60m	- / -	SP6VXS	-9 / -	2	Partial capture
11-05 22:49	60m	- / -	F1IQH	-13 / -	5	Partial capture
11-05 22:37	60m	- / -	PB0AKY	-10 / -	2	✓ Closing fragment
11-05 22:33	60m	-19 / -	TF1EM	- / -13	5	✓ Closing fragment
11-05 22:22	60m	-18 / -10	PI4APD	-16 / -13	14	✓ Full exchange observed
11-05 22:18	60m	-16 / -	SP2DNI	- / -15	2	✓ Closing fragment
11-05 22:11	60m	-20 / -15	HA7UL	+2 / -7	4	✓ Full exchange observed
11-05 21:55	60m	- / -	IZ5ILK	-14 / -	3	Partial capture
11-05 21:45	60m	-21 / -12	SP6EFY	-5 / -13	8	✓ Full exchange observed
11-05 21:41	60m	-21 / -14	G0ABI	-1 / -16	9	✓ Full exchange observed
11-05 21:34	60m	-21 / +9	IU5SCG	-7 / -	8	✓ Full exchange observed
11-05 21:23	60m	-18 / +4	IU5SCG	-8 / -	4	Partial capture
11-05 21:16	60m	-22 / -	DM3ER	- / -	4	Partial capture
11-05 20:56	60m	- / 0	DL5RDP	+15 / -	3	✓ Closing fragment
11-05 20:49	60m	-19 / -4	OM2CW	+9 / -17	5	✓ Full exchange observed
11-05 20:44	60m	-22 / -5	DH0GSU	-6 / -	4	✓ Closing observed
11-05 20:36	60m	-20 / +4	PA2HP	-6 / -20	6	✓ Full exchange observed
11-05 20:35	60m	- / -	SP6EFY	-6 / -	2	Partial capture
11-05 20:11	60m	-16 / +3	M1FJG	-8 / -	8	✓ Closing observed
11-05 20:00	60m	-19 / -1	G3PMY	-6 / -	3	✓ Closing observed
11-05 19:52	60m	-22 / -4	S58X	-11 / -19	8	✓ Full exchange observed
11-05 19:51	60m	-19 / -	DH4PAP	+2 / -	4	✓ Closing observed
11-05 19:45	60m	-18 / -	S58X	- / -	5	Partial capture
11-05 19:40	60m	-17 / +6	SM5BVV	-18 / -19	8	Partial capture
11-05 19:34	60m	-18 / -	EB1FE	- / -20	3	✓ Closing fragment
11-05 19:27	60m	-19 / -7	OE5KE	-7 / -11	6	✓ Full exchange observed
11-05 19:16	60m	-21 / -	HA5AZD	-17 / -18	5	✓ Closing observed
11-05 19:08	60m	-22 / -9	PF7DKW	-3 / -	3	✓ Closing observed
11-05 19:05	60m	- / -	F5LMJ	-16 / -	7	Partial capture
11-05 19:02	60m	-22 / -12	4X4DK	+4 / -	4	✓ Closing observed
11-05 18:53	60m	-23 / -	GX6RAF/P	-14 / -16	4	✓ Closing observed
11-05 18:34	60m	-22 / -	IU6FRS	- / -	4	Partial capture
11-05 18:32	60m	-22 / -2	DL4YDR	-5 / -19	7	✓ Full exchange observed
11-05 18:27	60m	-22 / -4	DK2BK	-4 / -11	5	✓ Full exchange observed
11-05 18:19	60m	- / -	OH3MB	-15 / -	2	Partial capture
11-05 18:11	60m	-22 / -2	LB8ZH	-8 / -19	4	✓ Full exchange observed
11-05 18:02	60m	- / -	DF4SI	-6 / -	5	Partial capture
11-03 06:29	60m	- / -	F5LMJ	-18 / -	6	Partial capture
11-03 06:24	60m	- / -	F5LMJ	-20 / -	4	Partial capture
11-03 06:21	60m	- / +7	OE8PIT	+4 / -	4	✓ Closing fragment
11-03 06:08	60m	- / -5	DL1SO	+8 / -	2	✓ Closing fragment
11-03 06:01	60m	- / -15	F5RMK	-10 / -	2	✓ Closing fragment
11-03 05:59	60m	- / -14	HA2EOU	-6 / -	2	✓ Closing fragment
11-03 05:27	40m	- / -19	TC2TR	-18 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
230930 -18 1438  EA3ISZ IU8LMC -14
230945 -19 1782  IU8LMC EA3ISZ R-15
231000 -18 1438  EA3ISZ IU8LMC RR73
231015 -17 1782  IU8LMC EA3ISZ 73
232045 -19 1782  CQ EA3ISZ JN01 (x2)
232130 -19 1584  EA3ISZ ON1JP +03
232215 -22 1782  ON1JP EA3ISZ R-09
232230 -22 1584  EA3ISZ ON1JP RR73
062545 -14 2287  EA3ISZ F5RMK +02 (x2)
063315 -15 1639  EA3ISZ PA7RA +02 (x3)
063530 -18 1769  EA3ISZ IT9JNR +21

40m

UTC    dB Audio  Message
192130 -18 1002  EA3ISZ MW6YPO -19 (x3)
193630  -6 1738  EA3ISZ EA5JLN -07 (x3)
084545 -16 1687  EA3ISZ IK3/UY7LA -08
084615  -7  346  EA3ISZ PF40EUDXF -20
052115  +6 1282  EA3ISZ OE/DL6CGU -18 (x2)
052715 -20 1745  EA3ISZ TC2TR -19 (x3)
053115  +3 1601  EA3ISZ LZ911TD -12
053830 -24 1660  CQ EA3ISZ JN01

10m

UTC    dB Audio  Message
191800 -11  657  EA3ISZ DN9DKN JO31 (x4)
194430  -9 1207  EA3ISZ ON7VZ -01 (x2)
195000 -23 1689  EA3ISZ PD2NBE -13 (x3)
200330  -5  846  EA3ISZ G1OZO -11 (x2)
101645 -20 1919  EA3ISZ 4X5CG -05 (x3)
124630 -10  687  EA3ISZ 5Z4RS -04

80m

UTC    dB Audio  Message
223430 -15 1407  DL5YAS EA3ISZ JN01
224730 -10 1407  MI7XHT EA3ISZ JN01 (x2)
224815  +4  420  EA3ISZ MI7XHT -02 (x3)
224930 -18 1407  MI7XHT EA3ISZ R-17
224945  -6  420  EA3ISZ MI7XHT RR73
225000 -16 1407  MI7XHT EA3ISZ 73
225400 -18 1407  F5OYA/P EA3ISZ JN01 (x4)
071700  -4  503  EA3ISZ DK5OPA JO30 (x2)

160m

UTC    dB Audio  Message
200300  +4 1796  EA3ISZ DO9AO 73
201945  +5  916  EA3ISZ G4IRN -08 (x2)
202530  -7 1854  EA3ISZ SV1ABB -19 (x2)
203215  +1 2791  EA3ISZ LX1JX -09 (x3)
203715 -17 2550  EA3ISZ F8ATS -09 (x2)
212730 -13 2053  EA3ISZ C37AC -03 (x2)
213315  -6 2580  EA3ISZ IW5DNZ -18 (x3)

20m

UTC    dB Audio  Message
044600  -1 1278  EA3ISZ LZ7VV RR73
071730  -6 1674  EA3ISZ ON1DGN -17 (x3)
173500  -6 1532  EA3ISZ II7MGXX +01
175415 -11  550  RI1FJL EA3ISZ JN01 (x7)
182015 -14  276  G7MYR EA3ISZ R-07 (x3)

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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