YO4BSM — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Romania Locator transmitted in a decoded message: KN35

Receiver-side FT8 activity involving YO4BSM, decoded by SO8OO in southeastern Poland. 131 related FT8 messages, 22 CQ messages, observed on 20m, 10m, across 22 UTC dates. Heard between 2026-05-09 and 2026-08-04.

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

131
Related messages
22
CQ messages
22
UTC dates heard
-9 dB
Mean decoder S/N

Bands

20m 10m
First seen: 2026-05-09
Last seen: 2026-08-04 03:02 UTC

Frequent QSO partners observed at SO8OO

Stations YO4BSM worked most often, as logged from our receiver:

Activity Heatmap

Locator transmitted by YO4BSM

Approximate centre of KN35, decoded 2026-07-27 05:08 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 UTCBandYO4BSM S/NCounterpartCounterpart S/NMsgsCapture
07-27 18:01 20m - / +5 R4FDW -20 / - 2 ✓ Closing fragment
07-27 05:06 20m -9 / - K0SSD - / -5 3 ✓ Closing fragment
07-27 04:59 20m 0 / - MI0OBC -22 / -3 6 ✓ Closing observed
07-27 04:44 20m +4 / - P5TIH - / - 2 Partial capture
07-13 04:39 20m -4 / - K3EA - / -9 2 Partial capture
07-13 04:21 20m -4 / - HA7TM - / - 2 ✓ Closing fragment
07-12 15:07 20m - / -11 MI0JZZ -10 / - 2 ✓ Closing fragment
07-12 14:54 20m - / -10 G3ROY -17 / - 2 Partial capture
07-05 06:37 20m - / - F4HSB -20 / - 2 Partial capture
07-05 05:27 20m - / -6 UP7WWA -18 / - 3 ✓ Closing fragment
07-04 20:01 20m - / +9 II7WWA -14 / - 2 ✓ Closing fragment
07-04 13:39 10m - / - IT9CMZ -22 / - 2 Partial capture
07-03 08:11 10m - / +8 OP0WWA -14 / - 2 Partial capture
07-03 07:57 10m - / -3 ON4JMV -8 / - 4 ✓ Closing fragment
06-30 14:22 10m - / - IZ4AIF +5 / - 4 ✓ Closing fragment
06-30 14:21 10m - / +4 R6DOP -5 / - 3 ✓ Closing fragment
06-12 04:42 10m - / -2 RW6HP 0 / - 3 ✓ Closing fragment
06-11 14:03 10m - / - F6BTP -22 / - 2 Partial capture
06-09 20:22 10m - / - PV8AJ -17 / - 2 ✓ Closing fragment
06-09 20:21 10m - / +1 LU1EHX -6 / - 2 ✓ Closing fragment
06-09 19:50 10m - / -16 PU1JSV -13 / - 2 ✓ Closing fragment
06-04 13:29 10m - / -9 F4FSY -2 / - 2 ✓ Closing fragment
06-02 14:38 10m - / -8 DN9SHA -6 / - 3 ✓ Closing fragment
06-01 09:29 10m -1 / - DO1LR - / -4 2 ✓ Closing fragment
06-01 09:23 10m -2 / - DO2DH - / -13 2 ✓ Closing fragment
06-01 09:21 10m -4 / -3 IK4LZH +19 / +10 5 ✓ Full exchange observed
05-31 15:31 10m - / +4 R6DV -5 / - 6 ✓ Closing fragment
05-31 15:02 10m - / -2 UA3ZUX +14 / - 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
045945  +9 2978  MI0OBC YO4BSM KN35 (x3)
050130 -22 1908  YO4BSM MI0OBC RR73
050145  -3 1906  MI0OBC YO4BSM 73
050345 -24 3212  CQ YO4BSM KN35
050645 -22 3212  K0SSD YO4BSM KN35 (x3)
050845 -12 2471  EI9KF YO4BSM KN35
175745  -9 2769  YO4BSM F1PBZ -01
180145 -18 1503  YO4BSM R4FDW +05 (x2)
045145 -11  326  YO4BSM RA6OY KN88
050215 -22 1393  YO4BSM SV5AZK -04
10m 
UTC    dB Audio  Message
142200  -4  893  YO4BSM R6DOP 73
142230  +7  894  YO4BSM IZ4AIF JN54 (x4)
075715 -14 1083  YO4BSM ON4JMV JO10 (x4)
081100 -20 1744  YO4BSM OP0WWA +08 (x2)
133900 -21 1703  YO4BSM IT9CMZ +15 (x2)
171430  +2 2681  YO4BSM TM2WWA -07
134100  -9  926  YO4BSM A61QQ +00

Decoder S/N history by band

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