DB5HB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO54

Receiver-side FT8 activity involving DB5HB, decoded by SO8OO in southeastern Poland. 96 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 11 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-08-24.

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 96 FT8 messages attributed to DB5HB 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 (72%), followed by 80 m (17%) and 40 m (11%). Most decodes (88%) fell within the six-hour window 18:00-00:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

80m · 16 40m · 11 20m · 69

First attributed message: 2026-06-07
Last attributed message: 2026-08-24 19:19 UTC

Observed FT8 message patterns

Attributed sample: 96 messages
Active dates: 11 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -15 to -3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 56, strong (≥ -8 dB) 33.

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 DB5HB in decoded directed-looking exchanges:

9A4ZM · Croatia ×2 3A2MW · Monaco A41ZZ · Oman CN8NS · Morocco CX6TU · Uruguay EC3A · Spain IQ4JO · Italy KC1TLE · United States KP4EJ · Puerto Rico R4FDW · European Russia R5AV · European Russia RK3AF · European Russia

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 DB5HB

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: JO54 · 53 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 892 km (approx.)
Last such locator decoded: 2026-08-24 19:19 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	DB5HB S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-24 19:17	20m	-4 / -	YO6LM	- / +1	2	✓ Closing fragment
08-24 19:15	20m	-8 / +1	IQ4JO	+7 / +6	4	✓ Full exchange observed
08-24 18:45	20m	-13 / -	3A2MW	- / +2	3	✓ Closing fragment
08-07 19:36	20m	-6 / -	CX6TU	- / -9	3	✓ Closing fragment
08-07 19:32	20m	-10 / -	YU4DRX	- / -3	3	✓ Closing fragment
08-07 19:27	20m	-12 / -6	CN8NS	-10 / +3	4	✓ Full exchange observed
07-29 11:32	20m	-10 / -	WA3MH	- / -	2	Partial capture
07-26 00:24	40m	-7 / -	KC1OXG	- / -20	2	Partial capture
07-19 08:48	10m	- / +8	9A4ZM	-11 / -	3	✓ Closing fragment
07-18 23:57	80m	-11 / -17	S56KO	-5 / +2	5	✓ Full exchange observed
07-18 23:54	80m	-6 / -	9A4ZM	+6 / +3	4	✓ Closing observed
07-18 23:53	80m	-5 / -4	8S7DL	-3 / +2	6	✓ Full exchange observed
07-18 23:51	80m	-14 / -	OO0O	-11 / -16	4	✓ Closing observed
07-18 23:47	80m	-2 / -2	UA4FKT	-5 / +3	5	✓ Full exchange observed
07-18 23:46	80m	-3 / -11	RC6OD	-2 / +5	5	✓ Full exchange observed
07-18 23:39	40m	-10 / -	A61OK	- / -	2	Partial capture
07-18 23:36	40m	-12 / -	UB9WPD	- / -7	3	✓ Closing fragment
07-18 23:35	40m	-9 / -	RY3F	-11 / -	2	✓ Closing observed
07-18 23:11	20m	-11 / -	T46FCR	- / -2	3	Partial capture
07-18 23:02	20m	-10 / -	K0MDS	- / -6	3	Partial capture
07-18 22:51	20m	-7 / -	KC1TLE	- / -19	3	✓ Closing fragment
07-18 22:38	20m	-8 / -	WO2E	- / -	2	Partial capture
07-18 20:52	20m	-12 / -	TL8GD	- / -13	3	✓ Closing fragment
07-18 20:41	20m	-10 / -2	XV9T	-12 / -5	3	Partial capture
07-10 13:31	20m	-10 / -	KF0YOB	- / -	2	Partial capture
07-10 13:18	20m	- / -20	EC3A	-15 / -	2	✓ Closing fragment
07-10 13:18	20m	- / -	F5RRS	-14 / -	4	Partial capture
07-10 13:14	20m	- / +1	F5IXN	-12 / -	2	Partial capture
07-10 12:59	20m	- / -12	RK9UN	-10 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
184630 -15 1850  3A2MW DB5HB 73
184700 -11 1850  SP6AXW DB5HB -01
191345 -11 3020  RD0L DB5HB JO54
191445  -2 3020  CQ DB5HB JO54 (x2)
191530 +10 2331  DB5HB IQ4JO JN63
191545  -5 3020  IQ4JO DB5HB +06
191600  +4 2331  DB5HB IQ4JO R+01
191615 -11 3020  IQ4JO DB5HB RR73
191715  -1 3020  CQ DB5HB JO54
191730  -9 2196  DB5HB BI4XDT PM01
191745  -3 3020  YO6LM DB5HB +01 (x2)
191845  -9 3020  CQ DB5HB JO54                         a1 (x2)

40m

UTC    dB Audio  Message
233530 -11  796  DB5HB RY3F RR73
233545  -9  842  RY3F DB5HB 73
233630 -14  842  UB9WPD DB5HB JO54 (x3)
233900  -9  842  A61OK DB5HB JO54 (x2)
234100 -11  842  VE2CKW DB5HB JO54
002145  -4  561  W4DXM DB5HB JO54
002400 -10  560  KC1OXG DB5HB JO54 (x2)
235245  -8  539  KC2HMD DB5HB JO54

10m

UTC    dB Audio  Message
084830 -13  996  DB5HB 9A4ZM JN86 (x3)

80m

UTC    dB Audio  Message
235330  -3 1003  DB5HB 8S7DL -04
235345  -3  807  8S7DL DB5HB R+02
235400  -4 1003  DB5HB 8S7DL RR73
235415  -7  806  8S7DL DB5HB 73
235430  +7  803  DB5HB 9A4ZM JN86
235430  -2 1003  DB5HB 8S7DL 73
235445  -9  807  9A4ZM DB5HB +03 (x2)
235530  +5  803  DB5HB 9A4ZM 73
235745  -4  870  DB5HB S56KO -17
235800  -9  807  S56KO DB5HB R+02
235815  -6  870  DB5HB S56KO RRR
235830 -13  806  S56KO DB5HB 73
235845  -6  870  DB5HB S56KO 73
235930 -12  806  CQ DB5HB JO54

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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