HB9GHJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Switzerland Most frequent locator attributed to this token: JN46

Receiver-side FT8 activity involving HB9GHJ, decoded by SO8OO in southeastern Poland. 299 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 9 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-09-10.

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 299 FT8 messages attributed to HB9GHJ as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (47%), followed by 80 m (39%) and 20 m (11%). Several six-hour UTC windows tied for the largest share (80%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

299

Messages attributed

UTC dates decoded

Active 15-min windows

-9 dB

Estimated median S/N

Bands

80m · 117 40m · 140 20m · 33 10m · 9

First attributed message: 2026-06-09
Last attributed message: 2026-09-10 16:29 UTC

Observed FT8 message patterns

Attributed sample: 299 messages
Active dates: 9 UTC dates
Estimated median S/N: -9 dB
Estimated 10th-90th percentile: -15 to -2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 21, moderate (-15 to -9 dB) 140, strong (≥ -8 dB) 138.

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.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with HB9GHJ in decoded directed-looking exchanges:

GB2WWA · England ×5 TM2WWA · France ×5 DA0WWA · Fed. Rep. of Germany ×4 II8WWA · Italy ×3 SN2WWA · Poland ×3 DO9BAU · Fed. Rep. of Germany ×2 Z30WWA · North Macedonia ×2 CR2WWA · Azores ×2 CS2WWA · Portugal ×2 DL9KM · Fed. Rep. of Germany ×2 SN4WWA · Poland ×2 II3WWA · Italy ×2

Attributed messages by UTC hour

Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.

Most frequent locator attributed to HB9GHJ

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: JN46 · 168 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,020 km (approx.)
Last such locator decoded: 2026-09-10 16:26 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	HB9GHJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-10 16:29	40m	-18 / -	R1BDX	-24 / -22	3	✓ Closing observed
09-10 16:28	40m	-22 / -	G6LSO	- / -8	2	✓ Closing fragment
09-10 16:26	40m	-18 / -	G6ZRV	-9 / -3	4	✓ Full exchange observed
09-10 16:26	40m	-19 / -1	OZ1SMB	+12 / -	4	✓ Closing observed
09-10 16:24	40m	-3 / -	EG26PDA	- / -12	2	Partial capture
09-10 16:22	40m	-4 / +3	F4FSY	-8 / -	2	✓ Closing observed
09-10 16:21	40m	-10 / -5	DF5ZB	-14 / +8	5	✓ Full exchange observed
09-10 16:20	40m	-8 / -	OK1TI	-6 / -7	3	✓ Closing observed
09-10 16:14	40m	+1 / -17	LA7VK	-18 / -	4	✓ Closing observed
09-10 16:00	40m	-11 / -10	R5AV	-10 / -12	2	Partial capture
09-10 15:56	40m	-8 / -	GW7HQL	- / -19	4	Partial capture
09-10 15:44	40m	- / -	IZ2SPX	-16 / -	2	Partial capture
09-10 15:42	40m	- / -	SH7MEM	-1 / -	6	Partial capture
09-10 15:42	40m	- / -	DC7KM	0 / -	2	Partial capture
09-10 15:41	40m	- / -	F4MZI	-10 / -	6	Partial capture
08-27 16:07	40m	-6 / -	F5PZT	-21 / +4	5	✓ Full exchange observed
07-05 21:39	40m	-10 / -	DA0WWA	-3 / -	2	✓ Closing observed
07-05 21:38	40m	- / -8	GB2WWA	-14 / -	2	✓ Closing fragment
07-05 21:34	80m	-7 / -1	CS2WWA	-14 / -14	7	✓ Full exchange observed
07-05 21:32	80m	-6 / -11	SK3WWA	+10 / -6	4	✓ Full exchange observed
07-05 21:30	80m	-11 / -	DA0WWA	- / -	2	Partial capture
07-05 21:29	80m	-12 / -12	II8WWA	-4 / +1	4	✓ Full exchange observed
07-04 20:53	80m	-4 / -	IR0WWA	- / -	7	Partial capture
07-04 20:50	80m	-5 / -6	OH5WWA	-4 / -11	7	✓ Full exchange observed
07-04 20:42	80m	- / -10	SN4WWA	+4 / -	2	Partial capture
07-04 20:38	80m	-2 / -	OH5WWA	- / -	4	Partial capture
07-04 20:36	80m	-3 / -10	HG8LXL	+19 / +5	6	✓ Full exchange observed
07-04 20:34	80m	-1 / -	TM2WWA	- / +6	4	✓ Closing fragment
07-04 20:28	40m	-10 / -2	TM2WWA	-10 / -8	7	✓ Full exchange observed
07-04 20:20	40m	-12 / -	SC9WWA	- / -9	13	✓ Closing fragment
07-04 20:19	40m	-10 / -	DA0WWA	- / -4	2	Partial capture
07-04 20:17	40m	-7 / -	SN0WWA	- / +6	3	Partial capture
07-04 20:15	40m	-8 / -	DA0WWA	- / -	3	Partial capture
07-04 20:11	40m	-8 / -	Z30WWA	- / -	7	Partial capture
07-04 20:08	40m	-11 / -	DA0WWA	- / -	4	Partial capture
07-04 20:04	40m	-8 / -	EG4WWA	- / -	2	✓ Closing fragment
07-04 20:03	40m	-9 / -9	II3WWA	+1 / -6	7	Partial capture
07-03 21:01	80m	- / -13	II2WWA	-4 / -	2	✓ Closing fragment
07-02 22:38	80m	-6 / -7	II1WWA	-22 / +1	11	✓ Full exchange observed
07-02 22:35	80m	-5 / +1	SD9WWA	-2 / +3	6	✓ Full exchange observed
07-02 22:32	80m	-3 / +1	OH5WWA	-4 / -9	7	Partial capture
07-02 22:31	80m	+4 / +5	DL9KM	-8 / -	3	✓ Closing observed
07-02 22:27	80m	-6 / -	DA0WWA	-3 / -	6	✓ Closing observed
07-02 22:19	80m	-5 / -	TM2WWA	- / -	2	✓ Closing fragment
07-02 22:16	80m	-9 / -	SN2WWA	+10 / +3	5	✓ Closing observed
07-02 22:12	80m	-7 / -6	SN4WWA	+4 / +2	3	✓ Full exchange observed
07-02 22:11	80m	-11 / -11	SK3WWA	-2 / -	5	✓ Closing observed
07-02 22:02	40m	-8 / -	IR0WWA	- / -	5	Partial capture
07-02 22:01	40m	-10 / -	TM2WWA	-4 / +2	4	✓ Full exchange observed
07-02 21:59	40m	-14 / -	OL6WWA	- / -	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
162630  -8 2432  HB9GHJ G6ZRV JO02
162645 -18 1733  G6ZRV HB9GHJ -03
162700 -10 2432  HB9GHJ G6ZRV R+12
162715 -18 1733  G6ZRV HB9GHJ RR73
162730 -14 1259  HB9GHJ SM7WNM -03
162800 +13 2833  HB9GHJ OZ1SMB R-01
162815 -19 1733  OZ1SMB HB9GHJ RR73
162830 +11 2833  HB9GHJ OZ1SMB 73
162845 -23 1733  G6LSO HB9GHJ R-08 (x2)
162930 -24 1733  HB9GHJ R1BDX KO59
162945 -18 1733  R1BDX HB9GHJ -22
163030 -24 1732  HB9GHJ R1BDX 73
163630 -12 1732  HB9GHJ PA2KV R+10
163700  -6 1732  HB9GHJ DL6BCZ JO43

80m

UTC    dB Audio  Message
212945 -11 1879  II8WWA HB9GHJ 73
213045 -12 1879  DA0WWA HB9GHJ JN46 (x2)
213130  +6  873  HB9GHJ RR73; IK8IOO <...> -10
213215 +10 1354  HB9GHJ SK3WWA -11
213230  -5 1879  SK3WWA HB9GHJ R-06
213245 +10 1354  HB9GHJ SK3WWA RR73
213300  -8 1879  SK3WWA HB9GHJ 73
213415  -8 1879  CS2WWA HB9GHJ JN46 (x3)
213530 -14 1238  HB9GHJ CS2WWA -01
213545  -9 1880  CS2WWA HB9GHJ R-14
213600 -13 1237  HB9GHJ CS2WWA RR73
213615  -9 1880  CS2WWA HB9GHJ 73

20m

UTC    dB Audio  Message
201515  -7 1179  OL6WWA HB9GHJ 73
135030 -23 1693  HB9GHJ IR0WWA +15
140100 -14 2477  HB9GHJ GB2WWA RR73
140130  -9 1697  HB9GHJ DL9KM JN68 (x6)
140545 -14 2051  HB9GHJ TM8WWA +14 (x2)
205400  -6  730  HB9GHJ CR2WWA +16 (x2)
205700  -6 1250  HB9GHJ CS2WWA +02 (x2)

10m

UTC    dB Audio  Message
142045 -18 1258  SC9WWA HB9GHJ JN46 (x2)
142345  -9 1438  Z30WWA HB9GHJ R-18 (x2)
142445 -10 1438  DO9BAU HB9GHJ -02 (x2)
142615 -22 1438  DK8HC HB9GHJ -07 (x3)
200430  -8  724  HB9GHJ SX0W +01 (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.

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