DL9RBV — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JN68

Receiver-side FT8 activity involving DL9RBV, decoded by SO8OO in southeastern Poland. 354 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 32 UTC dates in the available aggregate history. Observed between 2026-07-02 and 2026-09-15.

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 354 FT8 messages attributed to DL9RBV as the transmitting token by decoded message structure across 32 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (69%), followed by 40 m (19%) and 80 m (6%). Most decodes (68%) fell within the six-hour window 05:00-11:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.

Overview

354

Messages attributed

UTC dates decoded

Active 15-min windows

-12 dB

Estimated median S/N

Bands

80m · 23 40m · 67 20m · 244 10m · 20

First attributed message: 2026-07-02
Last attributed message: 2026-09-15 05:48 UTC

Observed FT8 message patterns

Attributed sample: 354 messages
Active dates: 32 UTC dates
Estimated median S/N: -12 dB
Estimated 10th-90th percentile: -18 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 92, moderate (-15 to -9 dB) 124, strong (≥ -8 dB) 138.

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 DL9RBV in decoded directed-looking exchanges:

9A4ZM · Croatia ×3 CN2DX · Morocco ×2 EC3A · Spain ×2 YT3MD · Serbia ×2 3A2MW · Monaco 9J2FI · Zambia F6FHZ · France GW8DX · Wales IW8PQ · Italy LZ7VV · Bulgaria R2EA · European Russia SQ8AA · Poland

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 DL9RBV

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: JN68 · 157 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 658 km (approx.)
Last such locator decoded: 2026-09-15 05:46 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	DL9RBV S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-15 05:46	80m	-13 / -	DO9YU	-17 / +2	3	✓ Closing observed
09-15 05:46	80m	-10 / -9	OZ7FOC	-17 / -16	7	✓ Full exchange observed
09-15 05:43	80m	-8 / -	9A5MP	- / -21	3	✓ Closing fragment
09-15 05:41	80m	-6 / -10	9A4ZM	+9 / +5	5	✓ Full exchange observed
09-15 05:39	80m	-11 / -	9A60CBM	- / -1	2	Partial capture
09-15 05:36	80m	-4 / -	IK2LRF	- / -1	2	Partial capture
09-15 05:34	80m	-9 / -	ON1JP	- / -18	2	✓ Closing fragment
09-15 05:34	80m	-5 / -	9A4ZM	+6 / +3	4	Partial capture
09-15 05:32	80m	-8 / -12	HA7TM	+18 / +8	5	✓ Full exchange observed
09-15 05:29	40m	+3 / -7	EU4U	-1 / -	6	Partial capture
09-15 05:24	40m	0 / -	GM6URC	- / -	2	Partial capture
09-14 06:12	40m	-4 / -14	EU4U	-1 / -	5	Partial capture
09-14 06:09	40m	-2 / -	SN40KZE	- / -	2	Partial capture
09-14 06:08	40m	-2 / -	OT7K	- / -	2	Partial capture
09-14 06:06	40m	-4 / -	EC3A	- / -19	2	✓ Closing fragment
09-14 06:03	40m	-5 / -11	UR5ZGY	+6 / -6	9	✓ Full exchange observed
09-14 06:01	40m	-2 / -4	HG8LXL	-9 / -3	5	✓ Full exchange observed
09-14 06:00	40m	-3 / -14	YT3MD	+4 / -6	7	✓ Full exchange observed
09-14 05:54	40m	-7 / -	EW6DM	- / -	2	Partial capture
09-01 07:12	40m	-4 / -	DL6KBV	- / -	2	Partial capture
09-01 07:08	40m	-4 / -	YO3GNF	-10 / -18	42	Partial capture
09-01 07:03	40m	-8 / +8	DL7DL	+6 / -10	13	✓ Full exchange observed
09-01 07:02	40m	+1 / -	<...>	- / -22	2	Partial capture
09-01 06:59	40m	- / -	YO3GNF	+2 / -	5	Partial capture
09-01 06:58	40m	0 / -	SO8DAN	- / -21	4	✓ Closing fragment
09-01 06:49	40m	+2 / -	F1POK	- / -15	2	✓ Closing fragment
09-01 06:44	40m	+3 / +4	9A4ZM	+2 / -14	6	✓ Full exchange observed
09-01 06:43	40m	+2 / -	UT2PC	- / -19	2	Partial capture
09-01 06:41	40m	+3 / -	OO0O	- / -16	3	✓ Closing fragment
09-01 06:40	40m	+5 / -10	F4IEW	-14 / -18	5	✓ Full exchange observed
09-01 06:37	40m	0 / -17	LZ1ZF	-20 / -12	5	✓ Full exchange observed
09-01 06:31	40m	-2 / -	<...>	- / -8	3	Partial capture
09-01 06:28	40m	-5 / -	IZ1CRA	- / -	2	Partial capture
08-29 09:51	20m	- / -14	EA2DR	-16 / -	2	✓ Closing fragment
08-23 09:10	20m	-8 / -	LB9ZG	- / -	4	Partial capture
08-22 07:36	20m	+5 / -	UF4S/P	- / -2	6	Partial capture
08-15 15:45	20m	-9 / -	OM3DX	- / -8	3	✓ Closing fragment
08-15 15:40	20m	0 / -	UN0PA	- / -	2	Partial capture
08-15 15:34	20m	-4 / -	UA4SGZ/6	- / -17	3	Partial capture
08-12 15:29	10m	-14 / -3	GW8DX	+12 / -13	6	✓ Full exchange observed
08-12 15:26	10m	-15 / -	F6FHZ	- / +8	2	✓ Closing fragment
08-12 15:24	10m	-3 / -	LZ7VV	- / -5	3	✓ Closing fragment
08-12 15:19	10m	-9 / -	LX1RFJ	- / -	2	Partial capture
08-12 12:27	10m	-6 / -	SQ8AA	- / -	4	✓ Closing fragment
08-12 12:24	10m	-6 / -	3A2MW	- / -5	3	✓ Closing fragment
08-12 08:34	20m	-16 / -	IK7DTM	- / -	2	Partial capture
08-12 08:30	20m	-20 / -	F4IIX	- / +8	3	✓ Closing fragment
08-12 08:28	20m	-11 / -6	CS8ABF	-18 / -8	4	✓ Full exchange observed
08-12 08:25	20m	-15 / -	IU0VOX	- / -7	3	✓ Closing fragment
08-12 08:21	20m	-23 / -	IU0VOX	- / -7	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
054145  -8 1101  9A4ZM DL9RBV RR73
054200  +8 1096  DL9RBV 9A4ZM 73
054330  -7 1101  9A5MP DL9RBV JN68 (x3)
054600  -6 1101  OZ7FOC DL9RBV JN68
054615 -17 1232  DL9RBV OZ7FOC -09
054630 -16 1101  DO9YU DL9RBV +02 (x2)
054715 -17 1232  DL9RBV OZ7FOC -09
054715 -17 2212  DL9RBV DO9YU 73
054730 -16 1101  OZ7FOC DL9RBV R-16
054745 -17 1232  DL9RBV OZ7FOC RR73
054800 -13 1101  OZ7FOC DL9RBV R-16 (x2)

40m

UTC    dB Audio  Message
061015  -2 1057  SN40KZE DL9RBV JN68
061200  -6 1057  EU4U DL9RBV JN68 (x2)
061315  -4 2734  DL9RBV EU4U -14 (x3)
052445  +1 1449  GM6URC DL9RBV JN68 (x2)
052630  -3 1449  LY2MM DL9RBV JN68
052930  +3 1240  EU4U DL9RBV JN68
053045  +1 2728  DL9RBV EU4U -07 (x5)

20m

UTC    dB Audio  Message
154600 -13 2127  OM3DX DL9RBV 73
154830 -23 2127  A61FJ DL9RBV R-15
073600  +9 1138  UF4S/P DL9RBV JN68 (x6)
065930 -14 1531  XQ1KK DL9RBV JN68
091000 -12 1531  LB9ZG DL9RBV JN68 (x4)
095100 -14 2316  DL9RBV EA2DR -14 (x2)

10m

UTC    dB Audio  Message
151930  -8 1834  LX1RFJ DL9RBV JN68 (x2)
152200  -6 1833  IS0JHW DL9RBV JN68
152415  +0 1833  LZ7VV DL9RBV JN68 (x3)
152615 -12 1832  F6FHZ DL9RBV +08 (x2)
152915 -11 1832  GW8DX DL9RBV JN68
152930 +16 2815  DL9RBV GW8DX -03
152945 -12 1832  GW8DX DL9RBV R-13
153000  +8 2815  DL9RBV GW8DX -03
153015 -18 1832  GW8DX DL9RBV R-11
153100 +12 2755  DL9RBV GW8DX RR73
091245 -20 1119  IZ8DFW DL9RBV JN68

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.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee