HB9HFM — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving HB9HFM, decoded by SO8OO in southeastern Poland. 92 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-08-27 and 2026-09-18.

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 92 FT8 messages attributed to HB9HFM as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (62%), followed by 80 m (33%) and 60 m (4%). Most decodes (100%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (89%); the estimated median was -1 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-1 dB

Estimated median S/N

Bands

80m · 30 60m · 4 40m · 57 20m · 1

First attributed message: 2026-08-27
Last attributed message: 2026-09-18 19:58 UTC

Observed FT8 message patterns

Attributed sample: 92 messages
Active dates: 6 UTC dates
Estimated median S/N: -1 dB
Estimated 10th-90th percentile: -9 to +7 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 9, strong (≥ -8 dB) 82.

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 HB9HFM in decoded directed-looking exchanges:

9A4ZM · Croatia DF4JY · Fed. Rep. of Germany F5PBG · France RI1FJL · Franz Josef Land T77R · San Marino V51WH · Namibia YO6LM · Romania 7X5CY · Algeria

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 HB9HFM

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 · 71 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,158 km (approx.)
Last such locator decoded: 2026-09-18 19:58 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	HB9HFM S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-18 20:02	40m	- / -9	F5PBG	-9 / -	3	✓ Closing fragment
09-18 19:56	40m	+2 / -	VU2OY	- / -	2	Partial capture
09-18 19:51	40m	-2 / -	UA4FKT	+12 / 0	2	Partial capture
09-18 19:50	40m	+6 / -4	9A4ZM	+14 / -	3	✓ Closing observed
09-18 19:50	40m	-1 / -	DF4JY	- / -12	2	✓ Closing fragment
09-18 19:47	40m	-1 / -3	T77R	+3 / +9	5	✓ Full exchange observed
09-18 19:25	80m	-5 / -	R2EA/P	- / -	8	Partial capture
09-18 18:50	60m	-7 / -	IS0CDO	- / -	4	Partial capture
09-12 22:06	80m	+3 / -1	7X5CY	-12 / +8	12	✓ Full exchange observed
09-12 21:57	40m	+2 / -	LU4FW	- / -	9	Partial capture
09-11 21:05	40m	+5 / -	V51WH	- / -11	24	✓ Closing fragment
09-09 19:11	80m	-8 / -	5Z4VJ	- / -	9	Partial capture
09-09 19:01	80m	-2 / -	5Z4VJ	- / -	3	Partial capture
09-04 17:34	40m	-5 / -	RI1FJL	- / -13	14	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
194915  +2 1339  HB9HFM T77R RR73
194930  -3 2777  T77R HB9HFM 73
195000  -4 2778  DF4JY HB9HFM -12 (x2)
195045 +19 2774  HB9HFM 9A4ZM JN86 (x2)
195130  +6 2778  9A4ZM HB9HFM RR73
195145 +12 2779  HB9HFM UA4FKT LO23
195230  +0 2778  YO6LM HB9HFM RR73
195300  -2 2778  UA4FKT HB9HFM +00
195645  +7 2778  VU2OY HB9HFM JN36 (x2)
200230  -7 2778  HB9HFM F5PBG IN78 (x3)

80m

UTC    dB Audio  Message
220845  +4  766  7X5CY HB9HFM JN36 (x3)
221000 -13  563  HB9HFM 7X5CY -01
221015  -4  766  7X5CY HB9HFM R+08
221030 -10  563  HB9HFM 7X5CY RR73
221045  +1  766  7X5CY HB9HFM 73
192545 -10 2054  R2EA/P HB9HFM JN36 (x8)

60m

UTC    dB Audio  Message
185045  -9 1834  IS0CDO HB9HFM JN36 (x4)

20m

UTC    dB Audio  Message
203445  -6 2225  RI1FJL HB9HFM JN36

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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