HB9SEX — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving HB9SEX, decoded by SO8OO in southeastern Poland. 86 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 11 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-17.

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 86 FT8 messages attributed to HB9SEX as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (81%), followed by 40 m (9%) and 10 m (9%). Several six-hour UTC windows tied for the largest share (84%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-8 dB

Estimated median S/N

Bands

40m · 8 20m · 70 10m · 8

First attributed message: 2026-06-07
Last attributed message: 2026-09-17 22:17 UTC

Observed FT8 message patterns

Attributed sample: 86 messages
Active dates: 11 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -19 to +12 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 14, moderate (-15 to -9 dB) 28, strong (≥ -8 dB) 44.

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 HB9SEX in decoded directed-looking exchanges:

DL4GHS · Fed. Rep. of Germany HA1BF · Hungary IQ4JO · Italy OT4R · Belgium UN7EAX · Kazakhstan DL4JC · Fed. Rep. of Germany

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 HB9SEX

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 · 56 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,158 km (approx.)
Last such locator decoded: 2026-09-17 22:17 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	HB9SEX S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-17 22:16	40m	-10 / -	A61DD	- / -	2	Partial capture
09-12 17:27	40m	- / +2	DL4JC	-8 / -	4	✓ Closing fragment
09-01 21:35	80m	- / -18	DO1OAS	-7 / -	5	Partial capture
08-23 18:01	20m	+18 / -9	UN7EAX	+3 / -9	20	✓ Full exchange observed
07-14 13:17	20m	-19 / -	OT4R	- / -13	2	✓ Closing fragment
07-14 13:14	20m	-19 / -	F6HAA	- / -16	3	Partial capture
07-08 18:19	20m	-8 / -9	TN8GD	-10 / -	6	Partial capture
07-06 21:25	20m	-2 / -	9A4AA	- / -	5	Partial capture
07-06 21:23	20m	-15 / -8	HA1BF	+1 / -12	6	✓ Full exchange observed
07-06 21:18	20m	-6 / -	IQ4JO	- / +9	2	✓ Closing fragment
07-06 21:14	20m	-11 / -	C31CT	- / -	2	Partial capture
07-05 19:38	40m	-12 / -	LA1WWA	- / -	2	Partial capture
07-05 19:32	20m	- / +4	TM8WWA	-6 / -	3	Partial capture
07-05 19:28	20m	-10 / -	DL4GHS	- / -6	2	✓ Closing fragment
07-05 19:27	20m	-10 / -	MD0CCE	- / -	2	Partial capture
06-28 18:51	10m	-9 / -	UB3DRL	- / -	3	Partial capture
06-27 20:42	40m	-18 / -	IU4SQE	- / -	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
204215 -18 2215  IU4SQE HB9SEX JN36 (x2)
193745 -14 2289  CQ HB9SEX JN36                        a1 (x2)
193845 -13 2289  LA1WWA HB9SEX JN36 (x2)
172700  -6 1787  HB9SEX DL4JC JN39
172700  -4 1287  HB9SEX DL3BWG -16
172830  -8 1787  HB9SEX DL4JC JN39 (x3)
221630  -8  826  A61DD HB9SEX JN36 (x2)

80m

UTC    dB Audio  Message
213515 -12  808  HB9SEX DO1OAS -18 (x4)
213715  -6 2253  HB9SEX F1PBZ -05
213715  -9  808  HB9SEX DO1OAS -18

20m

UTC    dB Audio  Message
180230  +6 2637  HB9SEX UN7EAX RR73
180245 +17 2637  UN7EAX HB9SEX R-09
180300  +1 2637  HB9SEX UN7EAX RR73
180315 +18 2636  UN7EAX HB9SEX R-09
180330  +4 2636  HB9SEX UN7EAX RR73
180345 +17 2636  UN7EAX HB9SEX R-09
180400  +5 2636  HB9SEX UN7EAX RR73
180415 +17 2636  UN7EAX HB9SEX R-09
180430  +3 2637  HB9SEX UN7EAX RR73
180445 +17 2636  UN7EAX HB9SEX R-09
180500  +0 2636  HB9SEX UN7EAX RR73 (x5)

10m

UTC    dB Audio  Message
184515 -10 1597  CQ HB9SEX JN36 (x5)
185100  -7 2427  UB3DRL HB9SEX JN36 (x3)

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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