HB9EFK — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Switzerland Locator transmitted in a decoded message: JN46

Receiver-side FT8 activity involving HB9EFK, decoded by SO8OO in southeastern Poland. 28,265 related FT8 messages, 25,239 CQ messages, observed on 160m, 80m, 60m, 40m, 20m, 10m, across 81 UTC dates. Heard between 2026-05-26 and 2026-08-24.

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

28,265

Related messages

25,239

CQ messages

UTC dates heard

+4 dB

Mean decoder S/N

Bands

80m 20m 40m 60m 10m 160m

First seen: 2026-05-26
Last seen: 2026-08-24 05:51 UTC

Frequent QSO partners observed at SO8OO

Stations HB9EFK worked most often, as logged from our receiver:

HA3GX · Hungary ×14 SQ8AA · Poland ×10 DG5PW · Fed. Rep. of Germany ×9 DA6DE · Fed. Rep. of Germany ×8 VK6CO · Australia ×7 KC2NDA · United States ×5 IW5ALZ · Italy ×5 IZ5FSO · Italy ×5 ZL1VAH · New Zealand ×5 BG4OOO · China ×5 SV2BWY · Greece ×5 F5LMJ · France ×5

Activity Heatmap

Locator transmitted by HB9EFK

Approximate centre of JN46, decoded 2026-08-24 07:51 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 UTC	Band	HB9EFK S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-24 07:46	20m	-6 / -	SP7AAO	- / -2	2	✓ Closing fragment
08-24 07:44	20m	+1 / -	SP3QDU	- / -4	2	✓ Closing fragment
08-24 07:39	20m	+1 / 0	EA1PZM	-20 / -4	3	✓ Full exchange observed
08-24 07:25	20m	+1 / +4	DL5KMR	-8 / +2	5	✓ Full exchange observed
08-24 07:15	20m	+8 / -	VK4MDP	- / -16	2	Partial capture
08-24 07:11	20m	+1 / -	ZL1VAH	- / -18	3	✓ Closing fragment
08-24 07:08	20m	+3 / -	N5TLH	- / -10	3	✓ Closing fragment
08-24 07:05	20m	+2 / -	VE3EIB	- / -13	3	Partial capture
08-24 06:58	20m	+7 / -	VK5JK	- / -	3	Partial capture
08-24 06:57	20m	+12 / -	G4JEB	- / -9	2	✓ Closing fragment
08-24 06:35	40m	+2 / +2	SP9KH	-3 / -15	5	✓ Full exchange observed
08-24 06:32	40m	0 / -18	SQ7NNI	-15 / -1	5	✓ Full exchange observed
08-24 06:29	40m	0 / -	IN3IZQ	- / -20	2	✓ Closing fragment
08-24 06:25	40m	0 / -	G3ZRK	- / -12	2	✓ Closing fragment
08-24 06:23	40m	0 / -11	F4VTR	-14 / -10	4	✓ Full exchange observed
08-24 06:18	40m	+2 / -	OK1WE	+12 / -6	5	✓ Full exchange observed
08-24 06:17	40m	+1 / -	F5LMJ	- / -11	2	✓ Closing fragment
08-24 06:15	40m	-1 / -	M0PFX	- / -15	3	✓ Closing fragment
08-24 06:12	40m	0 / -	EA7LGO	- / -10	2	✓ Closing fragment
08-24 06:07	40m	+2 / -11	DC1SN	-13 / -11	4	✓ Full exchange observed
08-24 06:03	40m	+2 / -	DC9GT	- / -2	2	✓ Closing fragment
08-24 05:56	40m	+6 / +2	PI4TS	-8 / -2	4	✓ Full exchange observed
08-24 05:49	40m	-3 / -	HB9UQF	- / -18	2	✓ Closing fragment
08-24 05:46	40m	+2 / -8	DL1JHQ	-14 / -13	4	✓ Full exchange observed
08-24 05:43	40m	0 / -	HB9NBN	-15 / -3	5	✓ Full exchange observed
08-24 05:39	40m	+4 / -	MM6EJO	- / -15	2	✓ Closing fragment
08-24 05:37	40m	+5 / -16	UW5ESX	-15 / -	5	✓ Closing observed
08-24 05:34	40m	+2 / -	W1BCL	- / -17	2	✓ Closing fragment
08-24 05:32	40m	+2 / -	KC0VNY	- / -5	2	✓ Closing fragment
08-24 05:30	40m	0 / -	M7DFM	- / -5	2	✓ Closing fragment
08-24 05:27	40m	+2 / -	PD2WL	- / -5	2	✓ Closing fragment
08-24 05:23	40m	+1 / -	SV6JUA	- / -13	3	✓ Closing fragment
08-24 05:23	40m	-3 / -	DJ3HW	-3 / 0	9	✓ Full exchange observed
08-24 05:20	40m	+4 / -10	DG5PW	-4 / -16	5	✓ Full exchange observed
08-24 05:16	40m	+7 / -	XE1NK	- / -12	5	✓ Closing fragment
08-24 05:13	40m	+8 / -	KK5JY	- / -15	3	✓ Closing fragment
08-24 05:11	40m	+3 / -	EB1LA	- / -2	3	Partial capture
08-23 06:37	20m	+12 / -	US5RK	- / -7	2	✓ Closing fragment
08-23 06:35	20m	+16 / -	M7KSV	- / -11	3	✓ Closing fragment
08-23 06:33	20m	+18 / +3	R4HLG	0 / -11	5	✓ Full exchange observed
08-23 06:28	20m	+22 / -	RU6FK	-9 / -12	4	✓ Closing observed
08-23 06:25	20m	+19 / -	OH2DXB	- / -1	2	✓ Closing fragment
08-23 06:25	20m	- / -	PD3LKN	-3 / -	11	Partial capture
08-23 06:21	20m	+14 / -	ER3GM	- / -13	2	✓ Closing fragment
08-23 06:06	20m	- / +4	TA3NK	+2 / -	3	✓ Closing fragment
08-23 05:44	40m	0 / -	NR5D	- / +7	6	✓ Closing fragment
08-23 05:40	40m	+2 / -	PI4TS	-24 / -10	3	✓ Closing observed
08-23 05:36	40m	+2 / -	KU0W	- / -11	2	✓ Closing fragment
08-23 05:33	40m	+5 / -	K4QVH	- / -12	2	✓ Closing fragment
08-23 05:27	40m	+1 / -	OK2UPG	- / +1	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
074445  -3 2883  SP3QDU HB9EFK RR73
074515  +6 2883  CQ HB9EFK JN46 (x3)
074645  -5 2883  SP7AAO HB9EFK -02 (x2)
074745 +12 2884  CQ HB9EFK JN46 (x9)

40m

UTC    dB Audio  Message
063245  +0 2455  SQ7NNI HB9EFK -01
063300 -15 2455  HB9EFK SQ7NNI R-18
063315  +1 2455  SQ7NNI HB9EFK RR73
063330 -14 2455  HB9EFK SQ7NNI 73
063345  +1 2455  CQ HB9EFK JN46 (x4)
063530  -7 2455  HB9EFK SP9KH JN99
063545  +2 2455  SP9KH HB9EFK -15
063600  -4 2455  HB9EFK SP9KH R+02
063615  +1 2455  SP9KH HB9EFK RR73
063630  +2 2955  HB9EFK SP9KH 73
063645  +3 2455  CQ HB9EFK JN46 (x2)

160m

UTC    dB Audio  Message
035215  -7 1487  CQ HB9EFK JN46 (x15)

10m

UTC    dB Audio  Message
154145  +8 2495  CQ HB9EFK JN46 (x2)
154245  +3 2495  M7GOA HB9EFK -21 (x3)
154415 +12 2495  CQ HB9EFK JN46 (x4)
154615  +7 2495  G8CZW HB9EFK -15 (x2)
154715  +3 2495  CQ HB9EFK JN46 (x4)

80m

UTC    dB Audio  Message
045715 -13  292  CQ HB9EFK JN46 (x12)
050315  +0  292  XE2V HB9EFK JN46 (x3)

60m

UTC    dB Audio  Message
053115  +8 2621  CQ HB9EFK JN46
053145  +8 2621  GB8VJ HB9EFK R-01 (x2)
053245  +2 2621  CQ HB9EFK JN46 (x12)

Decoder S/N history by band

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