HB9TLL — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Switzerland Most frequent locator attributed to this token: JN47

Receiver-side FT8 activity involving HB9TLL, decoded by SO8OO in southeastern Poland. 445 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 36 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-14.

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 445 FT8 messages attributed to HB9TLL as the transmitting token by decoded message structure across 36 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (61%), followed by 20 m (20%) and 60 m (11%). Most decodes (66%) fell within the six-hour window 17:00-23:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -15 dB.

Overview

445

Messages attributed

UTC dates decoded

Active 15-min windows

-15 dB

Estimated median S/N

Bands

80m · 2 60m · 49 40m · 271 20m · 87 10m · 36

First attributed message: 2026-06-07
Last attributed message: 2026-09-14 19:29 UTC

Observed FT8 message patterns

Attributed sample: 445 messages
Active dates: 36 UTC dates
Estimated median S/N: -15 dB
Estimated 10th-90th percentile: -22 to -6 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 204, moderate (-15 to -9 dB) 163, strong (≥ -8 dB) 78.

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 HB9TLL in decoded directed-looking exchanges:

DL9ATW · Fed. Rep. of Germany ×2 JA4FKX · Japan ×2 RT4A/P · European Russia ×2 UT8SQ · Ukraine ×2 9A4ZM · Croatia DF3RD · Fed. Rep. of Germany DK7UY · Fed. Rep. of Germany EA8UP · Canary Islands F1PBZ · France F4ETS · France I8JPO · Italy IU1VEY · Italy

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 HB9TLL

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: JN47 · 269 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 975 km (approx.)
Last such locator decoded: 2026-09-14 19:29 UTC

Other locator fields attributed to this token: KM08 (22).

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	HB9TLL S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-14 19:29	40m	-16 / -13	MI0OBC	-1 / -	5	✓ Closing observed
09-12 08:21	40m	-22 / -	DL4YDR	- / -15	2	✓ Closing fragment
09-12 08:10	40m	- / -10	GX4RAF/P	-16 / -	2	✓ Closing fragment
09-12 08:10	40m	- / -	HA3HZ	0 / -	3	Partial capture
09-12 08:10	40m	-15 / -	RT4A/P	- / -15	3	✓ Closing fragment
09-12 07:59	40m	-16 / -	RT4A/P	- / -2	2	✓ Closing fragment
09-12 07:58	40m	- / +7	S57CT	-5 / -	3	✓ Closing fragment
09-12 07:54	40m	- / -	HA3HZ	-13 / -	2	Partial capture
09-12 07:40	40m	-18 / +3	IU3WOH	-4 / -8	6	✓ Full exchange observed
09-12 07:32	40m	-16 / -5	ON1DGN	-22 / -1	2	Partial capture
09-12 07:28	40m	-18 / -	DK5EO	- / -17	2	Partial capture
09-12 07:25	40m	-21 / -8	SP3SX	-2 / -13	6	✓ Full exchange observed
09-11 10:35	40m	-22 / -	G6ZRV	- / -22	2	Partial capture
09-11 10:29	40m	- / -18	DL6RS	-10 / -	2	Partial capture
09-10 20:13	80m	- / -13	HB3YPJ	-16 / -	8	Partial capture
09-10 20:05	80m	- / -13	HB3YPJ	-16 / -	10	Partial capture
09-10 20:03	80m	- / -16	G0JEI	-12 / -	2	Partial capture
09-10 19:55	80m	- / -	DA6OOM	-17 / -	4	Partial capture
09-10 19:55	80m	- / -4	OK1CI	+6 / -	3	✓ Closing fragment
09-10 18:30	40m	- / -	LZ1ZF	0 / -	2	Partial capture
09-10 18:24	40m	-10 / -13	SV9QWC	-10 / -2	12	✓ Full exchange observed
09-08 18:12	40m	- / -	ON4BMA	-7 / -	3	Partial capture
09-08 18:08	40m	-8 / -10	F6BEC	+2 / -10	3	✓ Full exchange observed
09-08 18:02	40m	-11 / -6	DB5OET	-6 / -17	6	✓ Full exchange observed
09-08 18:02	40m	- / -9	R1BNJ	-3 / -	5	✓ Closing fragment
09-08 17:56	40m	- / -	R2FBW	-10 / -	2	Partial capture
09-02 20:54	40m	-4 / -2	DF2HZ	-10 / -15	7	Partial capture
09-02 20:52	40m	-1 / -	JG3TRB	- / -	2	Partial capture
09-01 21:03	40m	0 / -	EA7AKE	- / -19	3	✓ Closing fragment
08-31 20:09	40m	-4 / -6	SP0ZKR	+1 / -8	10	✓ Full exchange observed
08-31 20:07	40m	-4 / -20	PD0RAA	-20 / -	5	✓ Closing observed
08-31 20:05	40m	-8 / -3	F5SJC	-8 / -9	6	✓ Full exchange observed
08-31 20:03	40m	-6 / -12	PD4RJ	-12 / -14	5	✓ Full exchange observed
08-31 19:58	40m	-6 / -15	JA4FKX	-17 / -18	6	✓ Full exchange observed
08-31 19:56	40m	-1 / +10	OE8PIT	-1 / -9	6	✓ Full exchange observed
08-27 20:59	40m	-8 / -1	OE2LEX	-2 / -6	5	Partial capture
08-27 20:57	40m	-7 / -	DC9GT	- / -	2	✓ Closing fragment
08-27 20:53	40m	- / +7	DF8MV	-11 / -	3	✓ Closing fragment
08-27 20:52	40m	- / -16	JH5LCN	-4 / -	2	✓ Closing fragment
08-27 18:06	20m	- / -	CT2HEX	-11 / -	3	Partial capture
08-26 19:37	60m	- / -	9A5WA	-2 / -	2	Partial capture
08-26 19:17	20m	-11 / -	RI1FJL	- / -	4	Partial capture
08-17 17:46	20m	- / -10	RC6OG	-14 / -	2	Partial capture
08-16 19:22	10m	- / -	PA1GLD	-18 / -	2	✓ Closing fragment
08-16 09:14	20m	- / -	DK5DW	-9 / -	4	Partial capture
08-14 19:49	60m	-14 / -	DL4DBM	- / -	7	Partial capture
08-14 19:47	60m	- / -	EA1KCN	-14 / -	2	Partial capture
08-14 19:44	60m	-12 / +9	DL9DBZ	-5 / 0	5	✓ Full exchange observed
08-14 19:44	60m	-14 / -10	LY8O	-5 / -3	8	✓ Full exchange observed
08-14 19:42	60m	-12 / -10	GB8VJ	-12 / -11	4	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
081530 -21 2011  CQ HB9TLL JN47 (x7)
082100 -23 2011  DL4YDR HB9TLL -15 (x2)
192200 -18 1531  IN3IZQ HB9TLL JN47
192900 -16 1532  MI0OBC HB9TLL JN47 (x2)
192945  -2 2861  HB9TLL MI0OBC -13 (x3)

80m

UTC    dB Audio  Message
200745 -11 2003  HB9TLL HB3YPJ -13 (x15)

20m

UTC    dB Audio  Message
092230 -23 1745  CQ HB9TLL JN47
092715 -12 1744  HB9TLL SP7ROM JO91
174615 -14 1746  HB9TLL RC6OG KN98 (x2)
165945 -14 1465  HB9TLL CT1END/P R+01
191700 -10 2381  RI1FJL HB9TLL JN47 (x4)
192415 -10 2463  HB9TLL R3ZBY RR73
175200  -4 2492  SV7LYG HB9TLL JN47
180615  -8  824  HB9TLL CT2HEX IM58 (x3)
180745 -12 1656  HB9TLL R6HD LN15

60m

UTC    dB Audio  Message
194745 -15 2303  HB9TLL EA1KCN IN53
194800 -16 1700  LY8O HB9TLL RR73
194815  -6 1833  HB9TLL LY8O 73
194830 -13 1700  LY8O HB9TLL 73
194900 -11 1700  DL4DBM HB9TLL JN47
194915 -13 2303  HB9TLL EA1KCN IN53
194930 -14 1700  DL4DBM HB9TLL JN47 (x6)
185430 -16 1700  DB5HA HB9TLL RR73
193715  -4 2002  HB9TLL 9A5WA JN85 (x2)

10m

UTC    dB Audio  Message
150615  +4 1296  HB9TLL F4ETS 73
150730  -7  353  HB9TLL IU1VEY 73
174445 -17 1294  HB9TLL M8FQT IO93 (x3)
161415 -22 1800  HB9TLL PD2BS R-03 (x2)
161845 -20 1300  HB9TLL PD8GB JO32 (x2)
182630 -24 1762  CQ HB9TLL JN47
182745 -21 1805  HB9TLL F4EOC JN39
182800 -24 1762  PP2BO HB9TLL JN47
191930 -22 1762  CQ HB9TLL JN47
192215 -19 1525  HB9TLL PA1GLD JO21 (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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