HB9ISW — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

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

Receiver-side FT8 activity involving HB9ISW, decoded by SO8OO in southeastern Poland. 68 FT8 messages attributed to this token as transmitter, on 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-10-31 and 2026-11-06.

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 68 FT8 messages attributed to HB9ISW as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). Several six-hour UTC windows tied for the largest share (63%), 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

Messages attributed

UTC dates decoded

Active 15-min windows

-9 dB

Estimated median S/N

Bands

40m · 68

First attributed message: 2026-10-31
Last attributed message: 2026-11-06 08:02 UTC

Observed FT8 message patterns

Attributed sample: 68 messages
Active dates: 4 UTC dates
Estimated median S/N: -9 dB
Estimated 10th-90th percentile: -16 to +3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 33, strong (≥ -8 dB) 28.

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 HB9ISW in decoded directed-looking exchanges:

4X1UF · Israel 9A4ZM · Croatia DL1DEU · Fed. Rep. of Germany DL3JHK · Fed. Rep. of Germany GM6URC · Scotland HA1ZW · Hungary LA8ENA · Norway OK1USU · Czech Republic PD4RJ · Netherlands SP3DOF · Poland SP6FME · Poland SP6U · Poland

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 HB9ISW

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 · 39 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 975 km (approx.)
Last such locator decoded: 2026-11-06 08:02 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	HB9ISW S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-06 08:02	40m	-16 / -	M9YDD	- / -	2	Partial capture
11-06 07:58	40m	-14 / -2	SP6FME	-9 / +8	7	✓ Full exchange observed
11-06 07:56	40m	-14 / -	TF5B	- / -6	3	✓ Closing fragment
11-05 08:16	40m	- / -	SP6FME	-11 / -	2	Partial capture
11-05 08:14	40m	-14 / -	GM6URC	- / 0	3	✓ Closing fragment
11-05 08:08	40m	- / -9	G0JEI	-16 / -	2	Partial capture
11-05 08:06	40m	-11 / -	PD4RJ	- / +9	4	✓ Closing fragment
11-05 08:04	40m	-12 / -	HA1ZW	-13 / +4	4	✓ Closing observed
11-05 07:59	40m	-15 / +4	SP3DOF	-16 / -	4	✓ Full exchange observed
11-05 07:59	40m	-9 / -	DJ0MAB	-12 / -	3	Partial capture
11-05 07:58	40m	-17 / -2	LA8ENA	-22 / -2	4	✓ Full exchange observed
11-04 21:06	40m	-9 / -	BG5JGG	- / -	3	Partial capture
11-04 21:04	40m	-15 / -	BA7IWL	- / -	2	Partial capture
11-04 20:29	40m	- / -	5B4AOF	-11 / -	5	Partial capture
11-04 19:43	40m	-7 / -	4X1UF	-18 / -	3	✓ Closing observed
11-04 19:39	40m	- / -	5B4AOF	-10 / -	24	Partial capture
11-04 19:22	40m	+1 / -8	OK1USU	-13 / -	3	✓ Full exchange observed
11-04 19:20	40m	-6 / -22	DL1DEU	+3 / +5	5	✓ Full exchange observed
11-04 19:07	40m	+8 / -	DL3JHK	- / +9	2	✓ Closing fragment
11-04 19:04	40m	+4 / -	RA6FTH	- / +2	3	Partial capture
10-31 17:04	40m	- / -	DL6UM	0 / -	4	Partial capture
10-31 17:03	40m	- / -	R3DHP	-12 / -	2	Partial capture
10-31 17:01	40m	- / -	G0RVY	-8 / -	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
081600 -12 1713  HB9ISW SP6FME JO90 (x2)
075645 -14 1520  TF5B HB9ISW JN47 (x3)
075800  -7 1520  HB9ISW SP6FME JO90 (x2)
075830 -15 1655  DJ5FI HB9ISW JN47
075900 -10 1520  HB9ISW SP6FME JO90
080015 -16 1655  SP6FME HB9ISW +08
080030 -11 1521  HB9ISW SP6FME R-02
080045 -12 1655  SP6FME HB9ISW RR73
080100  -8 1521  HB9ISW SP6FME 73
080200 -15 1743  M9YDD HB9ISW JN47 (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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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