E75BO — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Bosnia-Herzegovina Most frequent locator attributed to this token: JN93

Receiver-side FT8 activity involving E75BO, decoded by SO8OO in southeastern Poland. 34 FT8 messages attributed to this token as transmitter, on 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-09-30 and 2026-10-02.

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 34 FT8 messages attributed to E75BO as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was -10 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

40m · 34

First attributed message: 2026-09-30
Last attributed message: 2026-10-02 05:18 UTC

Observed FT8 message patterns

Attributed sample: 34 messages
Active dates: 2 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -17 to -6 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 15, strong (≥ -8 dB) 13.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with E75BO in decoded directed-looking exchanges:

ON5ZZ · Belgium ×3 F4DVP · France MI7XHT · Northern Ireland OH8RA · Finland ON4CFC · Belgium ON5ACO · Belgium ON5WR · Belgium ON8BZ · Belgium PD1HBL · Netherlands R6DZR · European Russia RA5AD · European Russia RD3FY · European Russia

Most frequent locator attributed to E75BO

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: JN93 · 21 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 747 km (approx.)
Last such locator decoded: 2026-10-02 05:17 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	E75BO S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-02 23:50	40m	- / -7	PD1HBL	-4 / -	2	✓ Closing fragment
10-02 05:17	40m	-16 / -18	R6DZR	-9 / -12	5	✓ Full exchange observed
10-02 05:13	40m	-16 / -	OA4ENG	- / -	2	Partial capture
10-02 05:11	40m	- / -5	ON4CFC	-9 / -	2	✓ Closing fragment
10-02 05:06	40m	-8 / -	RX6ACR	- / -7	4	✓ Closing fragment
10-02 05:04	40m	-7 / -	OA4ENG	- / -	2	Partial capture
10-02 04:41	40m	-8 / -	OO0O	- / -1	3	Partial capture
10-02 04:31	40m	- / -	G6WCX	-11 / -	2	Partial capture
10-02 04:27	40m	- / -9	RD3FY	-6 / -	2	✓ Closing fragment
10-02 04:25	40m	- / -7	RW3YS	+6 / -	2	✓ Closing fragment
10-02 04:17	40m	- / -11	MI7XHT	-10 / -	2	✓ Closing fragment
10-02 04:01	40m	- / +1	ON8BZ	-7 / -	3	✓ Closing fragment
10-02 03:59	40m	- / -16	F4NJZ	-11 / -	13	Partial capture
10-02 03:13	40m	- / -14	ON5ZZ	-6 / -	4	✓ Closing fragment
10-02 03:08	40m	- / -6	ON5ZZ	-8 / -	2	✓ Closing fragment
10-02 02:54	40m	- / -3	ON5ZZ	-6 / -	4	✓ Closing fragment
10-02 02:50	40m	- / -8	ON5ZZ	+1 / -	2	✓ Closing fragment
10-02 02:45	40m	- / -19	HB9SEX	-7 / -	6	Partial capture
09-30 23:54	40m	- / -10	F4HTW	-12 / -	3	Partial capture
09-30 23:42	40m	- / -14	ON5WR	+12 / -	2	✓ Closing fragment
09-30 23:39	40m	- / -11	F4DVP	0 / -	4	✓ Closing fragment
09-30 23:34	40m	- / -10	RA5AD	-8 / -	2	✓ Closing fragment
09-30 16:40	40m	-8 / -	G4OST	- / -14	2	Partial capture
09-30 16:39	40m	-11 / -	ON5ACO	-5 / -17	2	✓ Closing observed
09-30 16:37	40m	-10 / -	UX7QV	- / +6	2	✓ Closing fragment
09-30 16:36	40m	- / -13	ON5ACO	-6 / -	2	Partial capture
09-30 16:13	40m	-12 / -	IK2ZJR	+11 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
050715  -6 2717  RX6ACR E75BO R-07 (x2)
051100  -8 1592  E75BO ON4CFC -05 (x2)
051345 -12 2776  OA4ENG E75BO JN93 (x2)
051745 -17  933  R6DZR E75BO JN93
051800  -9  941  E75BO R6DZR -18
051815 -15  933  R6DZR E75BO R-12
051830  -9  941  E75BO R6DZR RR73
051845 -17  932  R6DZR E75BO 73
200400  -5 2882  E75BO OH8RA RR73 (x2)
235030  -6  821  E75BO PD1HBL R-07 (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.

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