HB9DBM — 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: JN37

Receiver-side FT8 activity involving HB9DBM, decoded by SO8OO in southeastern Poland. 680 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 57 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-22.

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 680 FT8 messages attributed to HB9DBM as the transmitting token by decoded message structure across 57 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (33%), followed by 80 m (30%) and 160 m (15%). Most decodes (60%) fell within the six-hour window 03:00-09:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (77%); the estimated median was -2 dB.

Overview

680

Messages attributed

UTC dates decoded

122

Active 15-min windows

-2 dB

Estimated median S/N

Bands

160m · 99 80m · 201 60m · 65 40m · 224 20m · 74 10m · 17

First attributed message: 2026-06-06
Last attributed message: 2026-10-22 16:31 UTC

Observed FT8 message patterns

Attributed sample: 680 messages
Active dates: 57 UTC dates
Estimated median S/N: -2 dB
Estimated 10th-90th percentile: -14.2 to +8.5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 57, moderate (-15 to -9 dB) 99, strong (≥ -8 dB) 524.

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 HB9DBM in decoded directed-looking exchanges:

KI4NPG · United States ×2 EX7CQ · Kyrgyzstan F4FTV · France K4TG · United States LA9JKA · Norway R9SAP · Asiatic Russia RI1FJZ · Franz Josef Land RU6CH · European Russia RX3DTN · European Russia VE9RCI · Canada OX3LX · Greenland BA5CW · China

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 HB9DBM

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: JN37 · 277 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,116 km (approx.)
Last such locator decoded: 2026-10-18 05:58 UTC

Other locator fields attributed to this token: JN47 (154).

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	HB9DBM S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-22 16:29	80m	-1 / -	RC9WC	- / -	6	Partial capture
10-22 16:22	80m	-3 / -	RC9WC	- / -	6	Partial capture
10-18 06:01	80m	- / -	SP3BPC	-1 / -	4	Partial capture
10-18 05:59	80m	-2 / -	PY2WC	- / -16	2	✓ Closing fragment
10-18 05:57	80m	+11 / -	NQ9N	- / -	3	Partial capture
10-17 06:04	40m	-14 / -	W5RBD	- / -12	3	Partial capture
10-16 18:54	40m	-2 / -15	UN0GY	-8 / -8	9	✓ Full exchange observed
10-16 18:32	40m	-4 / -12	HB9ELE	+14 / -2	5	Partial capture
10-16 18:26	40m	-1 / -13	BA5CW	-4 / -13	11	✓ Full exchange observed
10-16 18:18	60m	-6 / -10	TA3GO	-13 / -13	4	✓ Full exchange observed
10-15 06:12	40m	-4 / -	R1BKC	- / -	12	Partial capture
10-14 17:22	60m	-3 / -	ZS6MGM	- / -	3	Partial capture
10-14 16:48	60m	-3 / -	A92AE	- / -19	10	Partial capture
10-14 07:18	60m	-16 / -	SP9JZU	+2 / -4	4	Partial capture
10-14 07:16	60m	-15 / -	VE9TG	- / -20	4	✓ Closing fragment
10-14 06:31	40m	-14 / -	DG4YT	- / -12	2	✓ Closing fragment
10-14 06:28	40m	-15 / -	LA4BHA	- / -	4	Partial capture
10-13 16:00	60m	-4 / -	M0XXJ	- / +3	2	✓ Closing fragment
10-12 18:21	160m	- / -	UA4FKT	-20 / -	3	Partial capture
10-12 18:21	160m	- / -	SP8V	-9 / -	9	Partial capture
10-12 18:20	160m	- / -	RA3VMD	-20 / -	2	Partial capture
10-12 18:20	160m	+4 / -11	RX3DTN	-10 / -16	6	✓ Full exchange observed
10-12 18:18	160m	-5 / -11	RU6CH	-12 / -9	5	✓ Full exchange observed
10-12 18:18	160m	-2 / -9	LA9JKA	-16 / -11	7	✓ Full exchange observed
10-12 18:15	160m	0 / -12	R9SAP	-19 / -9	4	✓ Full exchange observed
10-11 17:04	60m	-10 / -	H49A	- / -	3	Partial capture
10-11 16:55	60m	-8 / -	A92AE	- / -15	6	Partial capture
10-11 16:54	60m	-8 / -	H49A	- / -	2	Partial capture
10-08 10:16	40m	0 / -	PD0IFI	-6 / -	5	✓ Closing observed
10-08 10:13	40m	-1 / -	EA9AA	- / -19	3	✓ Closing fragment
10-06 05:14	40m	- / -	G3TKT	-13 / -	3	Partial capture
10-06 05:10	40m	-19 / -	KT4DZ	- / -18	3	✓ Closing fragment
10-06 05:10	40m	- / +1	ES2AJ	+12 / -	2	Partial capture
10-06 05:09	40m	-18 / -	KC2NJ	- / -14	2	✓ Closing fragment
10-06 05:07	40m	-15 / -	AJ5ZX	- / -	3	Partial capture
10-06 04:41	80m	+7 / -4	DL9KM	-3 / -11	5	✓ Full exchange observed
10-06 04:41	80m	+3 / -	K8OD	- / -16	2	✓ Closing fragment
10-04 16:49	40m	+6 / -	3B9FR	- / -	5	Partial capture
09-25 05:18	160m	-9 / -	V26OC	- / -	10	Partial capture
09-25 05:11	160m	-4 / -	V26OC	- / -	7	Partial capture
09-25 04:44	80m	+4 / -	KI5ZYU	- / -18	3	✓ Closing fragment
09-24 19:16	80m	+4 / -	RI1FJZ	- / -17	6	Partial capture
09-24 18:38	160m	+8 / -	RI1FJZ	- / -22	7	✓ Closing fragment
09-24 18:25	160m	+4 / -	RI1FJZ	- / -	8	Partial capture
09-24 17:29	160m	+1 / -	R7DX	- / -	3	Partial capture
09-24 16:21	160m	-17 / -	EU7A	- / -	8	Partial capture
09-23 17:47	80m	+1 / -	RI1FJZ	- / -	7	Partial capture
09-23 17:34	80m	+1 / -	RI1FJZ	- / -	10	Partial capture
09-23 05:24	80m	+6 / -	W5VYH	- / -14	3	✓ Closing fragment
09-23 05:23	80m	+7 / -	W9JJB	-18 / -5	3	✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
060145  +0 1126  HB9DBM SP3BPC JO81 (x3)
162230  -1 1316  RC9WC HB9DBM JN47 (x12)

40m

UTC    dB Audio  Message
183330 +16  800  HB9DBM HB9ELE JN47
183415  -4 2092  HB9ELE HB9DBM -02
183430  +9  800  HB9DBM HB9ELE R-12
185400 -10 2106  UN0GY HB9DBM JN47 (x5)
185645  -6 2394  HB9DBM UN0GY -15
185700  -1 2450  UN0GY HB9DBM R-08
185715 -10 2394  HB9DBM UN0GY RR73
185730  +3 2451  UN0GY HB9DBM R-08
060400 -14 1865  W5RBD HB9DBM JN47 (x3)

60m

UTC    dB Audio  Message
164945  -7 1279  A92AE HB9DBM JN47 (x8)
172245  -6 1280  ZS6MGM HB9DBM JN47 (x3)
181845  -5  985  TA3GO HB9DBM JN47
181900 -13  785  HB9DBM TA3GO -10
181915  -9  985  TA3GO HB9DBM R-13 (x2)

160m

UTC    dB Audio  Message
182115 -11 1340  HB9DBM RX3DTN R-11
182115 -19 1139  HB9DBM RA3VMD LO06
182130  +2 1958  RX3DTN HB9DBM RR73
182145 -21 1959  HB9DBM UA4FKT LO23
182145  -9  504  HB9DBM SP8V KO10
182145 -14 1341  HB9DBM RX3DTN 73
182215 -19 1959  HB9DBM UA4FKT LO23
182215  -2  504  HB9DBM SP8V KO10
182245 -21 1959  HB9DBM UA4FKT LO23
182245  -9  504  HB9DBM SP8V KO10 (x6)

20m

UTC    dB Audio  Message
083700  -3 1383  R0SDM/P HB9DBM JN37 (x4)
085200 +10 2615  TA2CAX/P HB9DBM JN37
085215  +7 2808  HB9DBM TA2CAX/P +03
085230 +16 2615  TA2CAX/P HB9DBM JN37
085245  -4 2808  HB9DBM TA2CAX/P +03
085300 +16 2615  TA2CAX/P HB9DBM JN37 (x6)
083530  -5 1319  VK6CT HB9DBM JN37

10m

UTC    dB Audio  Message
145315 -19 1706  PT7EM HB9DBM 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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