DL1RB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO41

Receiver-side FT8 activity involving DL1RB, decoded by SO8OO in southeastern Poland. 869 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 44 UTC dates in the available aggregate history. Observed between 2026-06-15 and 2026-09-16.

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 869 FT8 messages attributed to DL1RB as the transmitting token by decoded message structure across 44 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (71%), followed by 40 m (14%) and 60 m (9%). Several six-hour UTC windows tied for the largest share (72%), 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

869

Messages attributed

UTC dates decoded

138

Active 15-min windows

-9 dB

Estimated median S/N

Bands

80m · 19 60m · 80 40m · 121 20m · 613 10m · 36

First attributed message: 2026-06-15
Last attributed message: 2026-09-16 03:27 UTC

Observed FT8 message patterns

Attributed sample: 869 messages
Active dates: 44 UTC dates
Estimated median S/N: -9 dB
Estimated 10th-90th percentile: -16 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 105, moderate (-15 to -9 dB) 386, strong (≥ -8 dB) 378.

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 DL1RB in decoded directed-looking exchanges:

4X1UF · Israel 5B4ARQ · Cyprus A71XX · Qatar BA3NZ · China BG3NQT · China BI4JJO · China E25KAE · Thailand E70SZ · Bosnia-Herzegovina EA8AT · Canary Islands EB3JT · Spain F5HNQ · France G5MJF · England

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 DL1RB

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: JO41 · 703 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 916 km (approx.)
Last such locator decoded: 2026-09-16 03:27 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	DL1RB S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-08 01:58	40m	- / -	R6UBD	-14 / -	2	✓ Closing fragment
10-08 01:12	40m	- / -9	RN6HK	+2 / -	4	✓ Closing fragment
10-08 01:06	40m	- / -11	RX9WM	-6 / -	3	✓ Closing fragment
09-29 02:55	40m	- / -15	WW2N	-14 / -	2	✓ Closing fragment
09-29 02:54	40m	- / -9	R4IK	-8 / -	2	Partial capture
09-16 03:26	60m	-2 / -	5B4VL	- / -	3	Partial capture
09-16 03:24	60m	-5 / -	HB0WR	- / -	5	✓ Closing fragment
09-16 03:20	60m	-4 / -	XE2X	- / -	6	Partial capture
09-16 03:18	60m	-4 / -	K1WAT	- / -18	4	✓ Closing fragment
09-16 03:11	60m	-3 / -	KE8AFJ	- / -7	14	✓ Closing fragment
09-16 02:58	60m	-2 / -	KA9FOX	- / -	5	Partial capture
09-16 02:49	60m	-5 / -	W1IE	- / 0	3	✓ Closing fragment
09-16 02:43	60m	-2 / -	KA0BWH	- / -	11	Partial capture
09-16 02:37	40m	- / -	EA5HM	-7 / -	5	Partial capture
09-16 02:22	40m	- / -8	9K2WA	-7 / -	2	✓ Closing fragment
09-16 02:17	40m	- / -17	IZ8PPI	-16 / -	2	Partial capture
09-15 02:19	60m	-12 / -	KA9FOX	- / -	6	Partial capture
09-15 02:17	60m	-12 / -9	UR9QQ	-6 / +4	5	✓ Full exchange observed
09-15 02:16	60m	-15 / -	VE3WMI	- / -8	4	✓ Closing fragment
09-15 02:13	60m	+2 / -	9J2FI	- / -	2	Partial capture
09-15 02:01	60m	+2 / -	8R1TM	- / -	13	Partial capture
09-01 03:50	40m	-16 / -2	RW1AI	-8 / +3	5	✓ Full exchange observed
09-01 03:46	40m	-14 / -21	RA6HN	-14 / -10	5	✓ Full exchange observed
09-01 03:12	40m	-12 / -8	K1JAK	-21 / -13	5	✓ Full exchange observed
09-01 03:09	40m	-10 / -	OK1WCF	- / -6	3	✓ Closing fragment
09-01 03:04	40m	-8 / -	UW5IM	- / -3	2	✓ Closing fragment
09-01 02:57	40m	-19 / -5	RN6HGI	-15 / -7	5	✓ Full exchange observed
09-01 02:31	40m	- / -	F1IQH	-4 / -	2	Partial capture
09-01 02:26	40m	- / +10	UA3PAB	-7 / -	3	✓ Closing fragment
08-31 16:09	20m	-10 / -12	7Q7CT	-11 / -	3	Partial capture
08-31 15:55	20m	-10 / -	N1JML	- / -19	8	✓ Closing fragment
08-29 17:21	20m	-18 / -	AE1T	- / -15	3	Partial capture
08-29 17:15	20m	-7 / -	FR5FK	- / -	3	Partial capture
08-29 16:54	20m	+4 / -	VR2VOG	- / -	4	Partial capture
08-29 16:46	20m	-1 / -	N2FBV	- / -	2	✓ Closing fragment
08-29 16:43	20m	+4 / -	II7MGML	- / +2	3	Partial capture
08-29 16:35	20m	-1 / -	BI8SSW	- / -	3	Partial capture
08-29 16:29	20m	-9 / -18	4X1UF	0 / -2	7	✓ Full exchange observed
08-25 15:15	20m	- / -18	TF3JB	-10 / -	2	✓ Closing fragment
08-24 16:49	20m	- / -	CT1BFP	-4 / -	13	Partial capture
08-24 16:37	20m	-7 / -	5B4ARQ	- / -2	8	✓ Closing fragment
08-24 16:26	20m	-5 / -	YB3CCI	-9 / +5	4	✓ Closing observed
08-24 16:08	20m	-10 / -	HL5BPF	- / -	7	Partial capture
08-21 14:46	10m	-3 / -	<...>	- / -	6	Partial capture
08-20 15:30	20m	-5 / -	UA9YHA	- / -	8	Partial capture
08-20 15:12	20m	-5 / -12	BA3NZ	-12 / 0	10	✓ Full exchange observed
08-19 14:52	10m	-11 / -	PY1BP	- / -	3	Partial capture
08-17 17:40	20m	-11 / -	E25IJJ	- / -	4	Partial capture
08-12 17:17	20m	-8 / -	BI2QFV	- / -	2	Partial capture
08-12 17:07	20m	-10 / -	VA6SZ	- / -2	10	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
023945  -5 1534  DL1RB EA5HM IM99
023845 -11  666  DL1RB EA4GHH IN80
025415  -4 1039  DL1RB R4IK -09 (x2)
025545 -15  984  DL1RB WW2N -15 (x2)
010600  -9 1043  DL1RB RX9WM LO74 (x3)
011200  -4 2540  DL1RB RN6HK LN14 (x4)
015830 -15 1029  DL1RB R6UBD RR73 (x2)

60m

UTC    dB Audio  Message
031930  -2 1033  K1WAT DL1RB 73
032000  -3 1033  XE2X DL1RB JO41 (x6)
032415  -9 1033  HB0WR DL1RB JO41 (x5)
032645  +2 1033  5B4VL DL1RB JO41 (x3)

20m

UTC    dB Audio  Message
172130 -18 1077  AE1T DL1RB JO41 (x3)
154900  -7 1075  VK5AIB DL1RB JO41
155530  -3 1075  N1JML DL1RB JO41 (x8)
160915 -11 1075  7Q7CT DL1RB JO41 (x2)
161130 -11  844  DL1RB 7Q7CT -12

10m

UTC    dB Audio  Message
142415  -9 1089  LU7LRP DL1RB JO41 (x5)
144645 -15 1090  PY1BP DL1RB JO41 (x4)
144615  -6 1087  <...> DL1RB JO41 (x6)

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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