F4ISO — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: France Locator transmitted in a decoded message: JN25

Receiver-side FT8 activity involving F4ISO, decoded by SO8OO in southeastern Poland. 64 related FT8 messages, 3 CQ messages, observed on 20m, 10m, across 14 UTC dates. Heard between 2026-05-25 and 2026-08-21.

These are automated observations at the SO8OO receiver, not the station's official logbook. Times are UTC. Decoder S/N describes messages received at SO8OO; inferred entity and location data may be inaccurate for portable, remote or special-event operation.

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

Overview

64
Related messages
3
CQ messages
14
UTC dates heard
-3 dB
Mean decoder S/N

Bands

First seen: 2026-05-25
Last seen: 2026-08-21 14:16 UTC

Activity Heatmap

Locator transmitted by F4ISO

Approximate centre of JN25, decoded 2026-08-07 15:42 UTC. A transmitted locator is not proof of the operator's permanent location.

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 UTCBandF4ISO S/NCounterpartCounterpart S/NMsgsCapture
08-21 16:14 20m - / -15 DL3EBJ -1 / - 5 ✓ Closing fragment
07-25 06:01 20m -7 / - G4YLJ - / - 3 Partial capture
07-25 05:57 20m -3 / - KG5EHL - / - 5 Partial capture
07-25 05:50 20m +10 / - S58AT - / - 5 Partial capture
07-25 05:48 20m +9 / - VK3JMA - / - 3 Partial capture
06-27 13:06 20m - / -12 OE3PBS -10 / - 2 ✓ Closing fragment
06-24 06:00 20m -6 / - OK5AW - / - 2 Partial capture
06-22 15:24 10m - / -18 SV2TTC +10 / - 2 ✓ Closing fragment
06-21 17:21 20m -4 / - LA6VM - / - 2 Partial capture
06-21 17:16 20m -4 / - DB2QM - / -8 3 Partial capture
06-21 17:11 20m - / +9 OS4K -10 / - 6 ✓ Closing fragment
06-19 14:48 20m -10 / - SP2SGZ - / - 2 Partial capture
06-19 14:46 20m -6 / - M7EJN - / - 3 Partial capture
06-19 14:43 20m -12 / - HA1BF - / - 4 Partial capture
06-19 13:35 20m -14 / - DG3YDE - / - 2 Partial capture
06-19 13:32 20m -12 / - W3FOX - / - 3 Partial capture
06-19 13:24 20m -13 / - LZ1BT -8 / -6 2 Partial capture
06-19 13:19 20m -11 / - M7JBJ - / -19 5 Partial capture
06-19 13:16 20m -13 / - W9DHI - / -12 2 Partial capture
06-19 13:09 20m - / -14 OZ9TAN -7 / - 2 ✓ Closing fragment
06-19 13:06 20m -6 / - PD1GOL - / - 2 Partial capture
06-19 13:01 20m -9 / - UD8S - / -15 2 Partial capture
06-19 13:00 20m -12 / - PD4RJ - / - 2 Partial capture
06-18 16:31 20m +10 / - 3A2MW -15 / -16 4 ✓ Closing observed
06-18 16:27 20m +12 / - IQ9BH - / -15 2 Partial capture
06-18 16:18 20m -8 / - TA2AUL - / - 2 Partial capture
06-18 16:17 20m -10 / - OH2AP - / - 2 Partial capture
06-18 16:13 20m -11 / - BG4UCZ - / - 3 Partial capture
06-18 06:26 20m -6 / - KE8ZKN - / - 10 Partial capture
06-18 06:20 20m -6 / -15 LZ3DC +4 / -8 3 ✓ Full exchange observed
06-18 06:15 20m -6 / - LZ3DC - / - 6 Partial capture
06-18 06:14 20m -14 / - SM7MBG - / - 2 Partial capture
06-18 06:11 20m -10 / - NI7C - / - 2 Partial capture
06-17 15:09 20m -7 / - 9A5AZK - / - 4 Partial capture
06-17 15:07 20m -8 / - HA1BF - / - 4 Partial capture
06-17 07:59 20m -7 / - SV0LS - / - 2 Partial capture
06-17 07:57 20m -9 / - 9A5AZK - / - 4 Partial capture
06-17 07:54 20m -10 / - TA4INO - / - 4 Partial capture
06-17 07:50 20m -10 / - EA7PY - / - 2 Partial capture
06-14 05:51 20m -10 / - J88IH - / - 2 Partial capture
06-14 05:47 20m -10 / - J88IH - / - 2 Partial capture
06-14 05:41 20m -4 / - LZ1ZF - / - 2 Partial capture
06-14 05:37 20m -7 / - HA2AI - / - 3 Partial capture
06-13 14:56 20m -8 / - TA3RAM - / - 3 Partial capture
06-08 16:12 20m - / -7 S58WW -15 / - 2 ✓ Closing fragment
06-08 05:56 20m - / -12 RC9WC +2 / - 2 Partial capture
06-08 05:51 20m -13 / - XE2SSB - / - 5 Partial capture
06-08 05:38 20m -10 / - SV9QWC - / - 6 Partial capture
06-08 05:32 20m -2 / - DL9UXF - / +1 2 Partial capture
06-08 05:31 20m - / +6 DL2JB +10 / - 5 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m
UTC    dB Audio  Message
055730  -4 2972  KG5EHL F4ISO JN25 (x5)
060100  -8 2972  G4YLJ F4ISO JN25 (x3)
054930 -19 1808  F4ISO <...> -16
060830  -6 2969  WY0V F4ISO JN25
161400  -2  793  F4ISO DL3EBJ -15 (x5)
10m
UTC    dB Audio  Message
135430  -7 3035  CT7AIC F4ISO JN25
135830  -8 3034  JH1FNU F4ISO JN25 (x3)
140100  +1 3034  PU2BRU F4ISO JN25 (x2)
160715  +3 3036  VU3OSA F4ISO JN25
152400 +10 2723  F4ISO SV2TTC -18 (x2)
151100  -7 2983  EA4IPN F4ISO JN25
151415  -3 2983  PD5MVH F4ISO R+01
154215  -6 2980  HA3GX F4ISO JN25

Decoder S/N history by band

Daily averages across messages associated with this profile as decoded at SO8OO.