HB9SFL — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Switzerland Locator transmitted in a decoded message: JN37

Receiver-side FT8 activity involving HB9SFL, decoded by SO8OO in southeastern Poland. 2,582 related FT8 messages, 1,909 CQ messages, observed on 40m, 20m, 10m, across 43 UTC dates. Heard between 2026-05-24 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.

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Overview

2,582
Related messages
1,909
CQ messages
43
UTC dates heard
-13 dB
Mean decoder S/N

Bands

20m 40m 10m
First seen: 2026-05-24
Last seen: 2026-08-21 16:40 UTC

Frequent QSO partners observed at SO8OO

Stations HB9SFL worked most often, as logged from our receiver:

Activity Heatmap

Locator transmitted by HB9SFL

Approximate centre of JN37, decoded 2026-08-21 18:40 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 UTCBandHB9SFL S/NCounterpartCounterpart S/NMsgsCapture
08-21 18:37 40m - / -8 EA1KCN -14 / - 3 ✓ Closing fragment
08-21 18:34 40m - / -4 PD1WMD -6 / - 2 ✓ Closing fragment
08-20 10:17 20m -14 / - T77RN - / -13 2 Partial capture
08-20 10:13 20m -11 / - CT1END/P - / -11 3 Partial capture
08-20 10:03 20m - / +2 F4MSA -3 / - 3 ✓ Closing fragment
08-20 08:51 20m - / -6 T77RN +2 / - 3 Partial capture
08-20 08:48 20m +1 / - T77RN - / -13 2 Partial capture
08-20 08:45 20m -9 / - F5OYA/P - / -9 3 Partial capture
08-20 08:43 20m -8 / - SP8BJU - / -4 2 ✓ Closing fragment
08-19 10:55 20m -21 / -11 UT4QM -14 / - 6 ✓ Closing observed
08-16 13:04 40m - / -19 SP7SZJ -10 / - 12 ✓ Closing fragment
08-16 12:35 20m - / +5 DL6NAC -6 / - 3 ✓ Closing fragment
08-16 12:23 20m -19 / - IK0XBU - / -6 3 Partial capture
08-16 11:49 20m - / -6 PD2WL -16 / - 2 ✓ Closing fragment
08-16 10:40 20m -18 / - Z35WTF - / -21 2 Partial capture
08-16 10:36 20m - / - DL5ASK -7 / - 2 ✓ Closing fragment
08-16 10:32 20m -20 / - KC8QDQ - / -13 2 Partial capture
08-16 09:06 20m -17 / -15 OE5BTM 0 / - 6 ✓ Closing observed
08-16 08:41 20m - / -2 PD0PMF -8 / - 3 ✓ Closing fragment
08-16 08:36 20m - / - DL9MY -7 / - 3 ✓ Closing fragment
08-16 08:33 20m - / -14 DK5DW -6 / - 4 ✓ Closing fragment
08-11 12:52 20m - / -1 M9MAS -5 / - 3 Partial capture
08-11 11:43 20m -14 / - PD9R - / -14 2 ✓ Closing fragment
08-11 11:13 20m - / - PE0F -10 / - 2 Partial capture
08-11 10:41 20m - / -7 PA3FWZ -10 / - 3 ✓ Closing fragment
08-04 14:17 20m - / - G4TCI -11 / - 2 ✓ Closing fragment
08-04 13:56 20m - / - PH9OY -20 / - 2 ✓ Closing fragment
08-03 13:06 20m -22 / -3 IK5EEA -7 / -1 6 ✓ Full exchange observed
08-01 09:16 20m -15 / - N2XSG - / -3 4 Partial capture
08-01 09:14 20m -14 / - <...> - / -12 2 Partial capture
08-01 09:11 20m -17 / - DG3DXL -15 / - 2 ✓ Closing observed
08-01 09:06 20m - / -20 UX0ZAB -18 / - 2 ✓ Closing fragment
08-01 08:57 20m -16 / -7 M0LAD -14 / -1 4 ✓ Full exchange observed
08-01 08:41 20m - / -1 PB7Z +6 / - 3 ✓ Closing fragment
08-01 08:25 20m -15 / - W4GAF - / -15 14 Partial capture
08-01 07:40 40m - / -11 SP9JCN -12 / - 4 ✓ Closing fragment
07-31 14:48 20m - / +7 F5SJC -7 / - 4 ✓ Closing fragment
07-31 13:59 20m -16 / -15 G4EBY -16 / +2 3 Partial capture
07-31 13:09 20m - / -3 F1PBZ -2 / - 2 Partial capture
07-31 13:01 20m - / - DG3VB +8 / - 3 Partial capture
07-31 12:56 20m - / -17 F4JZW -18 / - 3 ✓ Closing fragment
07-30 13:37 20m - / -15 F1PBZ -11 / - 3 Partial capture
07-30 12:54 20m -16 / - DL1R -2 / -5 7 Partial capture
07-30 12:52 20m - / - PA2Z -19 / - 3 ✓ Closing fragment
07-30 12:38 20m - / - IU3PSC -17 / - 3 ✓ Closing fragment
07-30 12:32 20m - / -7 IV3DSG -12 / - 3 ✓ Closing fragment
07-29 14:06 10m -13 / - EA3DYI - / +4 2 Partial capture
07-29 10:56 20m - / - M7SXZ -9 / - 2 Partial capture
07-29 10:01 20m - / -18 PD0RCQ -2 / - 3 ✓ Closing fragment
07-27 11:12 20m - / -8 F4JZW -11 / - 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
130630 -12 1184  HB9SFL SP7SZJ R-19 (x8)
183330  -3 1892  HB9SFL OE2LEX JN67
183430  -7 2478  HB9SFL PD1WMD R-04 (x2)
183700 -14 2278  HB9SFL EA1KCN IN53 (x3)
184015 -11 2090  CQ HB9SFL JN37                        a1
20m 
UTC    dB Audio  Message
100115 -14 1913  CQ HB9SFL JN37 (x2)
100330  +0  901  HB9SFL F4MSA +02 (x3)
101145 -11 1913  CQ HB9SFL JN37 (x2)
101315 -11 1913  CT1END/P HB9SFL -11 (x3)
101545 -13 1913  CQ HB9SFL JN37 (x3)
101715 -17 1913  T77RN HB9SFL -13 (x2)
10m 
UTC    dB Audio  Message
165930 -11 2313  CQ HB9SFL JN37
170100  -6 2313  YO8XMD HB9SFL RR73
170130  -6 2313  CQ HB9SFL JN37
170200 -10 2313  SP5OKO HB9SFL -06 (x2)
170300 -11 2314  CQ HB9SFL JN37 (x3)
170430  +3 2314  DL4YDR HB9SFL +09 (x4)
140545 -14 2521  CQ HB9SFL JN37
140615 -13 2521  EA3DYI HB9SFL +04 (x2)

Decoder S/N history by band

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