EA5OS — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Spain Most frequent locator attributed to this token: IM98

Receiver-side FT8 activity involving EA5OS, decoded by SO8OO in southeastern Poland. 54 FT8 messages attributed to this token as transmitter, on 20m, 10m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-08-28.

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 54 FT8 messages attributed to EA5OS as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (78%), followed by 10 m (22%). Several six-hour UTC windows tied for the largest share (87%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-8 dB

Estimated median S/N

Bands

20m · 42 10m · 12

First attributed message: 2026-06-11
Last attributed message: 2026-08-28 16:31 UTC

Observed FT8 message patterns

Attributed sample: 54 messages
Active dates: 8 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -14 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 24, strong (≥ -8 dB) 30.

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 EA5OS in decoded directed-looking exchanges:

RX3ASQ · European Russia DL1NCH · Fed. Rep. of Germany G3PMY · England G7EVY · England G8DQP · England M0EGG · England MM8FKF · Scotland PD1DRE · Netherlands SV2HTW · Greece DL1NB · Fed. Rep. of Germany

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 EA5OS

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: IM98 · 41 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,203 km (approx.)
Last such locator decoded: 2026-08-28 16:30 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	EA5OS S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-11 16:00	40m	- / -	S51PV	-10 / -	5	Partial capture
08-28 16:30	20m	+1 / -8	PD1DRE	+8 / -12	3	✓ Full exchange observed
08-28 16:23	20m	-2 / -	MM/F4MFS	- / -	2	Partial capture
08-28 15:10	20m	- / -	G7MLL	-12 / -	10	Partial capture
08-28 15:09	20m	- / -11	M0EGG	+3 / -	3	✓ Closing fragment
08-28 15:01	20m	- / -3	G7EVY	+7 / -	3	✓ Closing fragment
08-28 14:53	20m	- / -	G3PMY	-2 / -	2	✓ Closing fragment
08-26 08:47	20m	- / -5	G8DQP	-4 / -	2	✓ Closing fragment
08-04 16:24	20m	-11 / -	IU3NAP	- / -13	2	Partial capture
08-04 16:18	20m	- / -	R9FDE	-13 / -	4	Partial capture
08-04 15:57	20m	- / -	DF0KK	+7 / -	5	Partial capture
08-04 15:51	20m	- / -14	DL1NCH	-6 / -	2	✓ Closing fragment
08-04 15:46	20m	- / -	DF0KK	+10 / -	6	Partial capture
08-04 15:22	20m	- / -13	F1PBZ	-4 / -	2	Partial capture
07-31 17:29	20m	- / -	PD3LKN	-8 / -	2	Partial capture
07-31 17:17	20m	-8 / -	M0NZR	- / -	2	Partial capture
07-31 17:16	20m	-6 / -	SV2HTW	- / -2	2	✓ Closing fragment
07-31 17:16	20m	- / -15	DL6KA	-5 / -	6	Partial capture
07-31 17:13	20m	- / -11	F1PBZ	-3 / -	3	Partial capture
07-31 17:11	20m	-4 / -	4X5DF	- / -	3	Partial capture
06-28 15:04	10m	-13 / -	RX3ASQ	- / -12	3	✓ Closing fragment
06-28 15:01	10m	-13 / -	EB3DBR	- / -13	3	Partial capture
06-28 15:00	10m	-12 / +8	HB9MZI	-10 / -3	5	Partial capture
06-28 14:49	10m	- / +1	DJ0MAB	-6 / -	3	Partial capture
06-24 15:41	20m	-13 / -	M1MPB	- / -	3	Partial capture
06-24 15:32	20m	- / -	DF5DY	-6 / -	5	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
160030 -11 2204  EA5OS S51PV JN76
160030 -11  719  EA5OS F1IQH R-03
160100  -9 2202  EA5OS S51PV JN76 (x4)
161215  -7 1129  EA5OS DL1NB RR73

20m

UTC    dB Audio  Message
151345 -23  246  EA5OS G7MLL IO93 (x3)
162115  +0  755  EA5OS M7MOK JO01
162130 -11  755  CQ EA5OS IM98                         a1
162300  -3  755  MM/F4MFS EA5OS IM98 (x2)
162530  -5  754  DG9MAQ EA5OS IM98
162600  -4  754  ON1JP EA5OS R-16
162700  -2  754  CQ EA5OS IM98
162730  -7  754  DB1SN EA5OS R-12
163000  -1  754  M3WHB EA5OS IM98
163045  +1  711  EA5OS PD1DRE -08
163100  +1  754  PD1DRE EA5OS R-12
163115 +15  711  EA5OS PD1DRE RR73

10m

UTC    dB Audio  Message
145230 -14  760  2E0KGX EA5OS IM98
145600 -14  760  DD0PD EA5OS IM98
145900 -15  760  CQ EA5OS IM98                         a1 (x2)
150045  -1  761  EA5OS HB9MZI R+08
150130 -15  761  EB3DBR EA5OS R-13
150215 -11  762  EA5OS HB9MZI JN46
150230 -12  760  EB3DBR EA5OS IM98 (x2)
150315 -15  761  EA5OS HB9MZI JN46 (x2)
150400 -11  760  RX3ASQ EA5OS IM98
150430 -12  760  HB9MZI EA5OS -03
150600 -14  762  RX3ASQ EA5OS R-12 (x2)

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