DL1HTB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO40

Receiver-side FT8 activity involving DL1HTB, decoded by SO8OO in southeastern Poland. 658 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 28 UTC dates in the available aggregate history. Observed between 2026-06-15 and 2026-10-03.

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 658 FT8 messages attributed to DL1HTB as the transmitting token by decoded message structure across 28 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (63%), followed by 40 m (30%) and 20 m (7%). Most decodes (86%) fell within the six-hour window 19:00-01:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

658

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

80m · 415 40m · 196 20m · 47

First attributed message: 2026-06-15
Last attributed message: 2026-10-03 01:05 UTC

Observed FT8 message patterns

Attributed sample: 658 messages
Active dates: 28 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -18 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 128, moderate (-15 to -9 dB) 279, strong (≥ -8 dB) 251.

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 DL1HTB in decoded directed-looking exchanges:

IQ4JO · Italy ×2 F1HFP · France ×2 ON4MAP · Belgium ×2 OZ1NIB · Denmark ×2 OZ7KJ/P · Denmark ×2 D2ACE · Angola BG7BVI · China E75W · Bosnia-Herzegovina EA8UP · Canary Islands F1PPH · France F4JVF · France IZ4JMA · 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 DL1HTB

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: JO40 · 432 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 911 km (approx.)
Last such locator decoded: 2026-10-03 01:03 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	DL1HTB S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-03 01:03	80m	-8 / -	EA6LU	0 / -2	4	✓ Closing observed
10-03 01:01	80m	-11 / -21	IK4IDY	-4 / -6	6	✓ Full exchange observed
10-03 00:55	80m	-14 / -	WA1J	- / -	4	Partial capture
10-03 00:46	80m	-17 / -16	LY5A	+15 / -	2	Partial capture
10-03 00:41	80m	-15 / -1	HB9EBM	+7 / -	3	✓ Closing observed
10-03 00:32	80m	-8 / -5	HB9EFK	+2 / -	4	✓ Full exchange observed
10-03 00:27	80m	-7 / -	S55X	- / -	3	Partial capture
10-03 00:22	80m	-1 / -15	EA2EWL	-20 / -12	4	✓ Full exchange observed
10-03 00:01	40m	- / -25	W4PSK	+5 / -	2	✓ Closing fragment
10-02 23:52	40m	-24 / -	RZ4FWA	-21 / +5	3	Partial capture
09-27 00:05	80m	- / -22	EA2FGV	0 / -	2	Partial capture
09-27 00:02	80m	-12 / -	DH1KJ	- / -	2	Partial capture
09-26 23:57	80m	-15 / +2	DD4U	-6 / -	6	✓ Full exchange observed
09-26 19:53	80m	- / -5	DL3AWB	+5 / -	3	Partial capture
09-26 19:49	80m	-5 / -	DO7DBI	-5 / +8	3	✓ Closing observed
09-26 19:45	80m	-7 / -	RZ9OL/M	- / -6	2	Partial capture
09-26 18:58	80m	-17 / -	DO8JB	-6 / +8	2	✓ Closing observed
09-26 18:47	80m	- / -1	DA6NEL	+4 / -	3	✓ Closing fragment
09-26 18:38	80m	-13 / -	R2EA/P	- / -	2	Partial capture
09-26 18:36	80m	-13 / -	DO1TRH	- / -	3	Partial capture
09-20 21:23	80m	-10 / -	SN100PKP	- / -	11	Partial capture
09-20 21:20	80m	-15 / -	HA7EC	- / -	5	Partial capture
09-20 21:12	80m	-9 / -14	IS0IGM	0 / -	6	✓ Closing observed
09-19 22:27	80m	- / -12	T77RN	-13 / -	3	Partial capture
09-19 18:25	40m	0 / -	JA4FKX	- / -	3	Partial capture
09-19 18:16	40m	-4 / -19	TA4SSK	-10 / -24	6	✓ Full exchange observed
09-19 18:14	40m	0 / -1	DL6EL	+14 / -	5	✓ Full exchange observed
09-18 20:21	80m	- / -12	ON1ANW	-20 / -	2	✓ Closing fragment
09-18 20:14	80m	-21 / -	ON3MOH	- / +1	2	✓ Closing fragment
09-05 23:16	80m	-13 / -22	SM7TZK	+8 / +6	6	✓ Full exchange observed
09-05 23:12	80m	-15 / -	LA2W/P	- / -3	5	✓ Closing fragment
09-05 23:06	80m	-11 / -	LA9H	- / -6	9	✓ Closing fragment
09-05 23:03	80m	-10 / -	SP9GCZ	- / -	6	Partial capture
09-05 23:01	80m	-14 / +2	OU7M/P	+7 / -	3	✓ Full exchange observed
09-05 22:55	80m	-17 / -6	OZ7CL	-8 / +1	5	✓ Full exchange observed
09-05 22:51	80m	- / -8	F1PBZ	+6 / -	2	✓ Closing fragment
09-05 22:48	80m	-16 / -17	DO9POL	-18 / -10	6	✓ Full exchange observed
09-05 22:46	80m	-19 / -10	DA6OOM	-9 / -2	5	✓ Full exchange observed
09-05 22:21	80m	-17 / -4	SA3LEN	+12 / -	5	✓ Closing observed
09-05 22:18	80m	-15 / -15	S57TW	+14 / -	6	✓ Closing observed
09-05 22:18	80m	-16 / -9	OZ7KJ/P	+1 / -	6	✓ Full exchange observed
09-05 22:14	80m	-15 / -9	F4MZI	-7 / +2	6	✓ Full exchange observed
09-05 22:02	40m	-6 / -	UR4QWW	- / -5	2	✓ Closing fragment
09-05 22:00	40m	-3 / -	RV3SBS/P	- / +8	2	✓ Closing fragment
09-05 21:51	40m	- / -5	OZ7KJ/P	+6 / -	4	✓ Closing fragment
09-05 21:46	40m	- / -7	UT6HN	+11 / -	2	Partial capture
09-05 21:43	40m	-13 / -	RK3AGG	-14 / -3	4	✓ Closing observed
09-05 21:39	40m	-13 / -	SO100PKP	- / -	5	✓ Closing fragment
09-05 21:34	40m	-2 / -	UA3UBV/1	- / -	2	✓ Closing fragment
09-05 21:26	40m	-10 / -12	EX7CQ	0 / +1	5	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
004630 +15 1071  DL1HTB LY5A -16
005515 -14  746  WA1J DL1HTB JO40 (x4)
010145  -9  745  IK4IDY DL1HTB JO40 (x2)
010230  -2 2022  DL1HTB IK4IDY -21
010245  -9  745  IK4IDY DL1HTB R-06
010300  -5 2022  DL1HTB IK4IDY RR73
010315 -10  746  IK4IDY DL1HTB 73
010345  -9  745  EA6LU DL1HTB JO40 (x2)
010500  +0  804  DL1HTB EA6LU RR73
010515  -9  745  EA6LU DL1HTB 73

40m

UTC    dB Audio  Message
181830  -4  432  TA4SSK DL1HTB RR73
181930  -1  433  CQ DL1HTB JO40
182130  -6  432  JA4FKX DL1HTB JO40 (x4)
235115 -23 1694  HI8JCD DL1HTB JO40
235145 -23 1694  CQ DL1HTB JO40 (x2)
235230 -21 2027  DL1HTB RZ4FWA LO23
235245 -23 1693  RZ4FWA DL1HTB +05 (x2)
235415 -24 1694  CQ DL1HTB JO40                        a1
000100  +6 2798  DL1HTB W4PSK -25 (x2)

20m

UTC    dB Audio  Message
100030  +1 2216  DL1HTB IQ4JO JN63
100045  -4  891  IQ4JO DL1HTB -18
100100  +4 2216  DL1HTB IQ4JO R-09
100115  -4  891  IQ4JO DL1HTB RR73
100130  +5 2216  DL1HTB IQ4JO 73
100215  -9  891  CQ DL1HTB JO40
100230 -16 1891  DL1HTB OH1LA KP01
100245 -14  891  OH1LA DL1HTB +02
100300  -9 1891  DL1HTB OH1LA R-01
100315 -11  890  OH1LA DL1HTB RR73
100330 -22 1891  DL1HTB OH1LA 73
100345  -6  890  CQ DL1HTB JO40
100430 -10  891  DL1HTB F1PPH JN07 (x3)

10m

UTC    dB Audio  Message
173315 -19 2350  DL1HTB D2ACE RR73

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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