DH8BAC — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO33

Receiver-side FT8 activity involving DH8BAC, decoded by SO8OO in southeastern Poland. 535 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 36 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-17.

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 535 FT8 messages attributed to DH8BAC as the transmitting token by decoded message structure across 36 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (74%), followed by 20 m (11%) and 10 m (6%). Most decodes (85%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (92%); the estimated median was +6 dB.

Overview

535

Messages attributed

UTC dates decoded

Active 15-min windows

+6 dB

Estimated median S/N

Bands

160m · 15 80m · 398 40m · 30 20m · 61 10m · 31

First attributed message: 2026-06-06
Last attributed message: 2026-09-17 19:23 UTC

Observed FT8 message patterns

Attributed sample: 535 messages
Active dates: 36 UTC dates
Estimated median S/N: +6 dB
Estimated 10th-90th percentile: -6 to +12 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 9, moderate (-15 to -9 dB) 36, strong (≥ -8 dB) 490.

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 DH8BAC in decoded directed-looking exchanges:

R5ACQ · European Russia ×2 RC9WC · Asiatic Russia ×2 RW6AU · European Russia ×2 DL5EBS · Fed. Rep. of Germany ×2 DK1HZ · Fed. Rep. of Germany HB9ACA · Switzerland LZ2VQ · Bulgaria R8LCA · Asiatic Russia SP9MQS · Poland UR9QQ · Ukraine 9A2AJ · Croatia DF2NV · Fed. Rep. of Germany

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 DH8BAC

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: JO33 · 256 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,091 km (approx.)
Last such locator decoded: 2026-09-17 19:22 UTC

Other locator fields attributed to this token: JN74 (2).

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	DH8BAC S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-17 19:22	80m	+3 / -16	R3PJ	-6 / -19	5	✓ Full exchange observed
09-17 19:09	80m	+14 / -	XQ3SK	- / -	3	Partial capture
09-17 19:02	80m	+11 / -	XQ3SK	- / -	2	Partial capture
09-14 17:25	40m	+14 / -3	SV1DKR	-4 / -	4	✓ Closing observed
09-14 17:21	40m	+11 / +1	S52DD	+8 / -3	8	✓ Full exchange observed
09-14 17:08	40m	+10 / -	RX9ABI	- / -16	3	✓ Closing fragment
09-12 19:58	40m	+6 / -	DH7CS	-13 / -9	3	Partial capture
09-12 19:55	40m	+5 / -2	DL8TT	-2 / -	4	✓ Closing observed
09-12 19:51	40m	+10 / -11	CN8NS	-10 / -15	4	✓ Full exchange observed
09-11 17:15	80m	+12 / 0	UA3QNA	+14 / -2	6	✓ Full exchange observed
09-11 17:13	80m	+10 / -6	RW6AU	-3 / -11	5	✓ Full exchange observed
09-09 19:25	80m	+8 / -	DD1OO	- / -15	4	✓ Closing fragment
09-09 19:21	80m	+7 / -	DD1OO	- / -	2	Partial capture
09-09 19:19	80m	+4 / -6	SV2FNT	+6 / -	3	Partial capture
09-09 19:12	80m	- / -	EA3FP	-20 / -	2	Partial capture
09-09 19:10	80m	+12 / -	SQ100PKP	- / -3	2	Partial capture
09-09 19:07	80m	+6 / +4	DF2JK	-13 / -9	5	✓ Full exchange observed
09-09 19:05	80m	+10 / -1	DL9KM	-20 / -19	5	✓ Full exchange observed
09-09 19:03	80m	+10 / +10	RK2A	+8 / -8	5	✓ Full exchange observed
09-09 19:02	80m	+12 / +10	OZ1GC	-4 / +1	4	✓ Full exchange observed
09-09 18:58	80m	+14 / +4	UR7FM	-2 / -19	10	✓ Full exchange observed
09-07 18:00	80m	- / -	DO1FZL	-8 / -	2	Partial capture
09-07 17:59	80m	+11 / -	DL1CC	- / -3	5	✓ Closing fragment
09-07 17:55	80m	+12 / -	R1943OD	- / -	5	Partial capture
09-07 17:25	80m	+3 / -	9V1YC	- / -20	5	✓ Closing fragment
09-06 19:29	80m	-2 / 0	E75C	+9 / -14	4	✓ Full exchange observed
09-06 19:25	80m	+11 / -	PE2JMR	- / -10	3	✓ Closing fragment
09-06 18:02	80m	-3 / -3	RC6OZ	-6 / -15	4	✓ Full exchange observed
09-06 17:59	80m	+5 / -6	RK3ZB	+10 / -12	5	✓ Full exchange observed
09-05 20:07	80m	+5 / -	SN100PKP	- / -3	3	Partial capture
09-05 20:00	80m	+8 / -	SA4FZA	- / -8	7	Partial capture
09-05 19:51	80m	+9 / -	DO3LZ	- / -7	2	✓ Closing fragment
09-05 19:49	80m	+9 / -	F4GYM	- / -18	3	✓ Closing fragment
09-05 18:37	80m	+12 / -	OM/DL7AU/P	- / -11	2	Partial capture
09-05 17:57	80m	+16 / -	R9SH	- / -	4	Partial capture
09-04 18:38	80m	+7 / -	5B4VL	- / -	2	Partial capture
09-04 18:26	80m	+7 / -	5B4VL	- / -	4	Partial capture
09-04 18:23	80m	+3 / -	UD7G	- / -19	4	✓ Closing fragment
09-04 18:19	80m	+2 / -	RA9SOZ	- / -23	5	✓ Closing fragment
09-02 20:06	80m	-3 / -8	GM6URC	0 / -9	5	✓ Full exchange observed
09-02 19:44	80m	-8 / -	R1DM	- / -	4	Partial capture
09-01 18:24	80m	+12 / +2	R3EDI	-10 / -	3	✓ Closing observed
08-30 19:56	80m	+10 / -	UA3QQG	-7 / -18	5	✓ Closing observed
08-30 19:51	40m	+6 / -5	R3LCW	-2 / -5	4	✓ Full exchange observed
08-30 19:49	40m	+10 / -	DL3BH	- / -13	3	Partial capture
08-30 19:48	40m	+8 / -	RK9UM	- / -12	3	Partial capture
08-30 19:36	80m	+15 / -13	UX5UO	+12 / -12	5	✓ Full exchange observed
08-30 18:32	80m	+11 / -8	R7OF	0 / -15	5	✓ Full exchange observed
08-30 18:14	80m	+11 / -	RC9WC	- / -15	3	✓ Closing fragment
08-29 20:36	80m	+4 / -	<...>	- / -	7	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
171615 +14 1403  DH8BAC UA3QNA +00
171630 +13 1232  UA3QNA DH8BAC R-02
171645 +13 1403  DH8BAC UA3QNA RR73
171700 +11 1232  UA3QNA DH8BAC 73
190200 +12 2583  XQ3SK DH8BAC JO33 (x5)
191945  +9 1346  IT8/HB9TLL DH8BAC JO33
192215  +8 1346  R3PJ DH8BAC JO33
192230  -2 1132  DH8BAC R3PJ -16
192245  -2 1346  R3PJ DH8BAC R-19
192300 -10 1132  DH8BAC R3PJ RR73
192315  +2 1346  R3PJ DH8BAC 73

40m

UTC    dB Audio  Message
170830 +10  928  RX9ABI DH8BAC JO33 (x3)
172115  +9  928  S52DD DH8BAC JO33 (x4)
172400  +6  493  DH8BAC S52DD +01
172415  +8  927  S52DD DH8BAC R-03
172430 +10  493  DH8BAC S52DD RR73
172445 +10  927  S52DD DH8BAC 73
172500  -8 2152  DH8BAC SV1DKR KM18 (x2)
172545 +14  927  SV1DKR DH8BAC RR73
172600  -2 2153  DH8BAC SV1DKR 73

10m

UTC    dB Audio  Message
074430  +8 1067  DH8BAC DL3MIB JN57 (x2)
074515  -5 2045  DL3MIB DH8BAC +00
074530 -14 1693  DH8BAC IK4TVP +11
074530  +6 1067  DH8BAC DL3MIB JN57 (x2)
074630 -13 1693  DH8BAC IK4TVP +11
074630 +11 1067  DH8BAC DL3MIB JN57
074715  -5 2045  IK4TVP DH8BAC R-06
074915  -5 2045  HB0WR DH8BAC JO33 (x6)

20m

UTC    dB Audio  Message
153700  +3 2344  RV9CX DH8BAC R-08 (x2)
163930  +8 2344  RL2F DH8BAC JO33
163945 -12 1869  DH8BAC RL2F +18
164000  +6 2344  RL2F DH8BAC R-14
164015  -7 1869  DH8BAC RL2F RR73
164030  +4 2344  RL2F DH8BAC R-14
164045  -9 1869  DH8BAC RL2F RR73
164100  +6 2344  RL2F DH8BAC 73
164200  +7 2344  BG7BVI DH8BAC 73
164330  +3 2344  M7VME DH8BAC -08 (x2)
164500 +12 2344  UA4FEN DH8BAC R-06 (x2)
084445  +3 1481  <...> DH8BAC R-07

160m

UTC    dB Audio  Message
193215 -12  722  <...> DH8BAC JO33 (x3)
193400 -11  987  DH8BAC DF2NV -14 (x2)
193530  -9 2431  DH8BAC HF5A JO92
184600 -13 1418  OH0ERF DH8BAC JO33 (x9)

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