HB9HDI — 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 HB9HDI, decoded by SO8OO in southeastern Poland. 94 FT8 messages attributed to this token as transmitter, on 60m, 40m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-06-14 and 2026-10-28.

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 94 FT8 messages attributed to HB9HDI as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (68%), followed by 60 m (23%) and 20 m (9%). Several six-hour UTC windows tied for the largest share (84%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's moderate S/N range (63%); the estimated median was -14 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-14 dB

Estimated median S/N

Bands

60m · 22 40m · 64 20m · 8

First attributed message: 2026-06-14
Last attributed message: 2026-10-28 19:30 UTC

Observed FT8 message patterns

Attributed sample: 94 messages
Active dates: 7 UTC dates
Estimated median S/N: -14 dB
Estimated 10th-90th percentile: -19 to -9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 26, moderate (-15 to -9 dB) 59, strong (≥ -8 dB) 9.

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 HB9HDI in decoded directed-looking exchanges:

IU4SQE · Italy DC8SG · Fed. Rep. of Germany F5RMK · France M0GDX · England SP2EWQ · Poland SP6JUD · Poland SQ7OBB · Poland IU1MQC · 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 HB9HDI

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 · 66 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 975 km (approx.)
Last such locator decoded: 2026-10-28 19:30 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	HB9HDI S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-29 16:18	60m	- / -15	DC8SG	-8 / -	6	✓ Closing fragment
10-29 16:15	60m	- / -5	SP2EWQ	+4 / -	5	✓ Closing fragment
10-28 18:55	60m	-18 / -	SP6JUD	- / -14	2	✓ Closing fragment
10-28 18:52	60m	-18 / -	SQ7OBB	- / -11	2	✓ Closing fragment
10-28 18:51	60m	- / -	PC7W	-15 / -	3	Partial capture
10-28 18:48	60m	- / -16	ON8DM	-11 / -	2	Partial capture
10-28 18:43	60m	-19 / -11	F5RMK	-6 / -8	4	✓ Full exchange observed
10-28 18:37	80m	- / -18	IU1MQC	-6 / -	3	✓ Closing fragment
10-28 18:32	40m	-9 / -	UR5DU	- / -	2	Partial capture
09-06 06:40	40m	-9 / -15	SP5KOR	-8 / -14	10	Partial capture
09-06 06:38	40m	-8 / -	IU4SQE	- / -	3	✓ Closing fragment
09-06 03:29	60m	- / -	LA2W/P	-4 / -	2	Partial capture
09-06 03:26	60m	- / -	F4AWT	-11 / -	3	Partial capture
09-05 06:10	60m	-20 / -	SQ2RBY/P	- / -	5	Partial capture

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
185545 -18 1279  SP6JUD HB9HDI 73
185830 -13 1366  HB9HDI SP4HXV -14
161445 -15 1315  HB9HDI M0GDX RR73
161515  +8  681  HB9HDI SP2EWQ JO93 (x5)
161815 -10 1394  HB9HDI DC8SG JO40 (x6)
162245 -17 1352  HB9HDI 9A2LM -12

40m

UTC    dB Audio  Message
064045  -7  731  SP5KOR HB9HDI JN47
064100  -8  873  HB9HDI SP5KOR -15
064115  -9  731  SP5KOR HB9HDI JN47 (x2)
064200  -8  872  HB9HDI SP5KOR -15
064215  -9  731  SP5KOR HB9HDI R-22 (x3)
124930 -15 1200  CQ HB9HDI JN47
183230  -7 1203  UR5DU HB9HDI JN47 (x2)
192845 -13 1283  CQ HB9HDI JN47 (x4)

80m

UTC    dB Audio  Message
183745  -5 3003  HB9HDI IU1MQC -18 (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.

CW

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

Explore CW reception at SO8OO

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