HB9ACA — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Switzerland Most frequent locator attributed to this token: JN36

Receiver-side FT8 activity involving HB9ACA, decoded by SO8OO in southeastern Poland. 3,204 FT8 messages attributed to this token as transmitter, on 60m, 20m, 10m, across 59 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-11.

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 3,204 FT8 messages attributed to HB9ACA as the transmitting token by decoded message structure across 59 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (65%), followed by 10 m (25%) and 60 m (10%). Most decodes (98%) fell within the six-hour window 04:00-10:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12.1 dB.

Overview

3,204

Messages attributed

UTC dates decoded

297

Active 15-min windows

-12.1 dB

Estimated median S/N

Bands

60m · 331 20m · 2,080 10m · 793

First attributed message: 2026-06-08
Last attributed message: 2026-09-11 06:38 UTC

Observed FT8 message patterns

Attributed sample: 3,204 messages
Active dates: 59 UTC dates
Estimated median S/N: -12.1 dB
Estimated 10th-90th percentile: -21 to +1.5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1,176, moderate (-15 to -9 dB) 880, strong (≥ -8 dB) 1,148.

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 HB9ACA in decoded directed-looking exchanges:

MM7CEH · Scotland ×5 IW5ALZ · Italy ×4 M7KSV · England ×3 DL1UDO · Fed. Rep. of Germany ×2 LA6RJA · Norway ×2 F1PBZ · France ×2 R8LCA · Asiatic Russia ×2 9A5AZK · Croatia ×2 G4SRT · England ×2 OH1ZE · Finland ×2 DD4DZ · Fed. Rep. of Germany ×2 R4ML · European Russia ×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 HB9ACA

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: JN36 · 1,996 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,158 km (approx.)
Last such locator decoded: 2026-09-11 06:38 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	HB9ACA S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-11 06:27	60m	-22 / -	IK3HTH	-24 / -	2	✓ Closing observed
09-11 06:10	60m	-18 / -	DL8OAZ	- / -11	2	✓ Closing fragment
09-11 06:09	60m	-20 / -	GI4OGS	- / 0	2	✓ Closing fragment
09-10 07:25	60m	- / -12	SP6PCL	-9 / -	3	✓ Closing fragment
09-10 06:44	60m	-22 / -	W2JIT	- / -7	2	Partial capture
09-10 06:38	60m	-20 / -	N3FMC	- / -16	3	Partial capture
09-10 06:35	60m	-19 / -	DD4DZ	- / -11	2	✓ Closing fragment
09-10 06:30	60m	-20 / -	IQ4JO	- / -10	6	✓ Closing fragment
09-10 06:29	60m	-19 / -	DL4YDR	-15 / -7	4	✓ Full exchange observed
09-08 07:01	60m	-22 / -	SM6XVI	- / -20	4	✓ Closing fragment
09-08 06:42	60m	-22 / -	F4FQY	- / +9	2	✓ Closing fragment
09-08 06:38	60m	-23 / -	GW4HZA	- / -3	3	✓ Closing fragment
09-08 06:36	60m	-20 / -	DG1KFR	-18 / +2	4	✓ Closing observed
09-08 06:22	60m	- / -4	ON6LEO	+5 / -	3	✓ Closing fragment
09-08 06:16	60m	-19 / -	G3ZRK	- / +3	2	✓ Closing fragment
09-08 06:14	60m	-16 / -	W2TAD	- / -8	2	✓ Closing fragment
09-08 06:11	60m	-18 / -	F4FQY	- / -	4	✓ Closing fragment
09-08 06:08	60m	-18 / -	K5PC	- / -	3	Partial capture
09-08 06:06	60m	-18 / -	KA9FOX	- / -17	3	Partial capture
09-08 06:05	60m	-18 / -	KR4JUK	- / -16	2	✓ Closing fragment
09-08 06:03	60m	-17 / -	KD3CLB	- / -10	3	✓ Closing fragment
09-07 06:19	60m	-18 / -	F6FHZ	- / +1	2	✓ Closing fragment
09-07 06:16	60m	-17 / -	F8CRS	- / 0	3	✓ Closing fragment
09-07 06:15	60m	-19 / -	DL4HTK	-19 / -5	5	✓ Closing observed
09-07 06:14	60m	-19 / -	D44TWO	- / -14	3	✓ Closing fragment
09-06 06:41	60m	- / +10	OT4N	-19 / -	2	✓ Closing fragment
09-06 06:32	60m	-21 / -	DL6NDN	-14 / -	3	✓ Closing observed
09-06 06:30	80m	- / -	DL9KM	-5 / -	7	Partial capture
09-06 06:28	60m	-16 / +2	DL2AOM	-16 / -	2	✓ Closing observed
09-06 06:23	60m	-19 / -	G4SRT	- / +9	2	✓ Closing fragment
09-06 06:20	60m	-18 / -	DL1MST	-12 / -	2	✓ Closing observed
09-05 07:11	60m	-20 / -	HB9HDK	- / +6	2	✓ Closing fragment
09-05 07:03	60m	-22 / -	F4FRQ	- / -	2	✓ Closing fragment
09-05 07:01	60m	-20 / -	EA7Y	- / -19	3	✓ Closing fragment
09-05 06:58	60m	-23 / -13	OE6TNO	-17 / -	4	✓ Closing observed
09-05 06:44	60m	-21 / -	W5UHQ	- / -23	2	Partial capture
09-04 06:47	60m	-21 / -1	DF0AWG	-5 / -	5	✓ Full exchange observed
09-04 06:44	60m	- / +7	DK8EW	-5 / -	3	✓ Closing fragment
09-04 06:36	60m	- / -9	IK7FPV	-10 / -	6	✓ Closing fragment
09-04 06:30	60m	-20 / -	F5LMJ	- / -	2	Partial capture
09-04 06:25	60m	-18 / -	DH5NC	- / +8	2	✓ Closing fragment
09-04 06:16	60m	-20 / -	N8OQ	- / -20	2	✓ Closing fragment
09-04 06:14	60m	-22 / -	DB4SZ	- / +8	2	✓ Closing fragment
09-04 06:09	60m	-12 / -	<...>	- / -8	3	Partial capture
09-04 06:06	60m	-17 / -	DL5RDP	-1 / -	8	✓ Full exchange observed
09-04 06:03	60m	-17 / -	NP3MR	- / -14	2	Partial capture
08-29 13:40	20m	-12 / -	R8AGV	- / -12	3	Partial capture
08-29 13:38	20m	-8 / -12	F4FPR	-12 / -12	4	✓ Full exchange observed
08-29 13:35	20m	-10 / -	GB9WHP	- / -6	2	✓ Closing fragment
08-29 13:24	20m	-10 / -	LX7I	- / -	10	Partial capture

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
062630 -20 1931  CQ HB9ACA JN36 (x2)
062745 -24 1933  HB9ACA IK3HTH JN65
062830 -22 1931  IK3HTH HB9ACA RR73
062900 -24 1932  CQ HB9ACA JN36                        a1 (x11)

80m

UTC    dB Audio  Message
063015  -8 2050  HB9ACA DL9KM JN68 (x7)

20m

UTC    dB Audio  Message
132800  -4 1275  LX7I HB9ACA JN36 (x2)
133445  -6 2174  CQ HB9ACA JN36
133515  -7 2174  GB9WHP HB9ACA -06 (x2)
133645 -11 2174  M9KPF HB9ACA RR73
133715  -6 2174  CQ HB9ACA JN36 (x2)
133800 -11 2174  HB9ACA F4FPR -12
133815  -8 2174  F4FPR HB9ACA R-12
133830 -12 2174  HB9ACA F4FPR RR73
133845  -8 2174  F4FPR HB9ACA 73
134015  -9 2174  R8AGV HB9ACA -12 (x3)

10m

UTC    dB Audio  Message
083430 -12 2283  CQ HB9ACA JN36
083500 -10 2283  ON2WI HB9ACA RR73
083530  -9 2283  CQ HB9ACA JN36
083600 -10 2283  PA3AGN HB9ACA -04 (x2)
083730 -11 2283  CQ HB9ACA JN36 (x2)
083830 -10 2283  F5NLY HB9ACA -11 (x2)
083930 -17 2283  CQ HB9ACA JN36 (x2)
084100 -16 2283  DO9MK HB9ACA +04 (x2)
084300 -13 2283  PE4T HB9ACA +10 (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.

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