DH9DR — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO31

Receiver-side FT8 activity involving DH9DR, decoded by SO8OO in southeastern Poland. 4,619 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 77 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-08.

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 4,619 FT8 messages attributed to DH9DR as the transmitting token by decoded message structure across 77 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (43%), followed by 40 m (37%) and 80 m (14%). Most decodes (62%) fell within the six-hour window 04:00-10:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (63%); the estimated median was -5 dB.

Overview

4,619

Messages attributed

UTC dates decoded

469

Active 15-min windows

-5 dB

Estimated median S/N

Bands

80m · 661 60m · 233 40m · 1,686 20m · 1,967 10m · 72

First attributed message: 2026-06-07
Last attributed message: 2026-09-08 17:55 UTC

Observed FT8 message patterns

Attributed sample: 4,619 messages
Active dates: 77 UTC dates
Estimated median S/N: -5 dB
Estimated 10th-90th percentile: -16.3 to +6 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 592, moderate (-15 to -9 dB) 1,138, strong (≥ -8 dB) 2,889.

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 DH9DR in decoded directed-looking exchanges:

IK4LZH · Italy ×4 F1IQH · France ×4 DL9KM · Fed. Rep. of Germany ×4 EA5HM · Spain ×4 OO0O · Belgium ×3 F4DIA · France ×3 G8CVS · England ×3 N1WI · United States ×3 CT2GQA · Portugal ×3 EA4GG · Spain ×2 F5PAC · France ×2 EA7AH · Spain ×2

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 DH9DR

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: JO31 · 2,596 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,054 km (approx.)
Last such locator decoded: 2026-09-08 17:54 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	DH9DR S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-08 17:54	40m	+9 / +8	DL1NRC	-5 / -9	5	✓ Full exchange observed
09-08 17:38	40m	+4 / +10	HB9AKE	-12 / -9	3	✓ Full exchange observed
09-08 17:37	40m	+4 / -	R7MP	-12 / -13	3	✓ Closing observed
09-08 17:32	40m	+2 / -	BH3HAC	- / -	4	Partial capture
09-08 17:31	40m	0 / -	LA5LDX	- / -	2	Partial capture
09-08 17:30	40m	+5 / -	VJ6X	- / -15	3	✓ Closing fragment
09-08 17:27	40m	- / -	US5RK	+4 / -	3	Partial capture
09-08 17:23	40m	+8 / -	5Q1X	- / -6	3	Partial capture
09-08 17:22	40m	- / -	UA3SCU	-2 / -	2	Partial capture
09-08 17:21	40m	+10 / -6	R2SN	-3 / -11	5	✓ Full exchange observed
09-08 16:52	40m	+15 / -	BG7BVP	- / -	3	Partial capture
09-08 16:45	40m	+8 / -9	R4FCK	-11 / -9	5	✓ Full exchange observed
09-08 16:13	40m	+6 / -	R1LH	- / -16	2	✓ Closing fragment
09-08 16:11	40m	0 / -2	RN6MA	-6 / -7	4	✓ Full exchange observed
09-08 16:10	40m	+3 / -	UB4RID	- / -17	3	✓ Closing fragment
09-08 16:07	40m	0 / -2	IN3LTL	-8 / -2	5	✓ Full exchange observed
09-08 16:03	40m	+8 / -6	R9FDE	-14 / -5	4	✓ Full exchange observed
09-08 16:00	40m	-2 / -	EA7TB	- / -10	2	Partial capture
09-08 15:59	40m	- / -9	RN6MA	-8 / -	2	Partial capture
09-08 15:57	40m	-2 / -	UA1RC	- / -10	4	✓ Closing fragment
09-08 15:56	40m	+2 / -	UA1ZFL	- / -11	3	✓ Closing fragment
09-08 15:54	40m	+2 / -1	DL7VAR	+10 / +1	5	✓ Full exchange observed
09-08 15:52	40m	+4 / -	UN7CFG	- / -	4	Partial capture
09-08 15:50	40m	+4 / +7	IW2CAK	-14 / +1	5	✓ Full exchange observed
09-01 09:07	40m	-20 / -	SP9YGD	+2 / -7	8	Partial capture
08-30 05:52	40m	- / +9	II7MGXX	-12 / -	2	Partial capture
08-30 05:52	40m	+9 / -	LU3CQ	- / 0	3	Partial capture
08-30 05:48	40m	+7 / -12	R3KJF	-11 / -6	7	✓ Full exchange observed
08-30 05:44	40m	+2 / -	EO80F	- / -12	2	Partial capture
08-30 05:39	40m	0 / -	N8BV	- / -	7	Partial capture
08-30 05:38	40m	+6 / -	EA5ISA	- / -15	2	✓ Closing fragment
08-30 05:30	80m	0 / -	AA8TT	- / -	3	Partial capture
08-30 05:29	80m	+6 / -3	F5PAC	-14 / 0	4	✓ Full exchange observed
08-29 13:28	20m	-8 / -	BG0EMF	- / -11	4	✓ Closing fragment
08-29 10:11	20m	-10 / -	RI1FJL	- / -	5	Partial capture
08-29 10:09	20m	+13 / -5	RZ4AZ	-5 / -1	4	✓ Full exchange observed
08-29 10:08	20m	+12 / -	R4DD	- / -15	3	✓ Closing fragment
08-29 05:36	80m	-13 / -	N1WI	- / -16	5	✓ Closing fragment
08-29 05:33	80m	- / -10	SP8BJU	+13 / -	2	✓ Closing fragment
08-29 05:31	80m	- / +2	DJ3JD	-22 / -	2	✓ Closing fragment
08-29 05:28	80m	+4 / -	IR7MGGC	- / -18	2	Partial capture
08-29 05:26	80m	+2 / -	EA5JLB	- / -21	3	✓ Closing fragment
08-29 05:24	80m	-1 / -	HF160ID	- / -	4	Partial capture
08-28 07:38	40m	0 / +5	S57CT	-4 / -5	8	✓ Full exchange observed
08-27 17:51	20m	+7 / -	5H6PJ	- / -	5	Partial capture
08-27 06:16	40m	+7 / -	MW0DNF	- / -13	3	✓ Closing fragment
08-27 06:15	40m	+6 / -	OM0MR	-17 / -12	3	✓ Closing observed
08-27 06:14	40m	+8 / -	W8HW	- / -7	2	✓ Closing fragment
08-27 06:13	40m	- / -12	UR3AHB	-4 / -	2	Partial capture
08-27 06:10	40m	+4 / -	N2LEE	- / -8	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
173700  +4 1127  R7MP DH9DR R-13
173715 -12 1643  DH9DR R7MP RR73
173730  +4 1127  R7MP DH9DR 73
173800  +2 1127  CQ DH9DR JO31
173830  +1 1127  HB9AKE DH9DR -09
173845 -12 1127  DH9DR HB9AKE R+10
173900  +7 1127  HB9AKE DH9DR RR73
174000  +0 1127  M7CSI DH9DR RR73
174245 -10  810  DH9DR YL2TM +05
175430  +8  814  CQ DH9DR JO31
175445  -4  998  DH9DR DL1NRC JN39
175500  +7  814  DL1NRC DH9DR -09
175515  -2  998  DH9DR DL1NRC R+08
175530 +11  815  DL1NRC DH9DR RR73
175545  -8  998  DH9DR DL1NRC 73

80m

UTC    dB Audio  Message
053130 -20 1663  DH9DR DJ3JD RR73
053300 +13 1187  DH9DR SP8BJU -10 (x2)
053600 -17 1790  N1WI DH9DR JO31 (x5)
052915 -14 1494  DH9DR F5PAC -03
052930  +5 1134  F5PAC DH9DR R+00
052945 -14 1494  DH9DR F5PAC RR73
053000  +6 1134  F5PAC DH9DR 73
053030  +1 1134  AA8TT DH9DR JO31 (x3)

20m

UTC    dB Audio  Message
100845 +12 2564  R4DD DH9DR R-15 (x2)
100930  -5 2564  DH9DR RZ4AZ LN28
100945 +13 2565  RZ4AZ DH9DR -01
101000  -5 2564  DH9DR RZ4AZ R-05
101015 +13 2565  RZ4AZ DH9DR RR73
101145 -15 1243  RI1FJL DH9DR JO31 (x5)
132830 -10 1480  BG0EMF DH9DR JO31 (x4)

60m

UTC    dB Audio  Message
045600  -6 1097  CQ DH9DR JO31
045615 -13 1100  DH9DR DL9ZKL JO52
045630  -8 1097  DL9ZKL DH9DR -05
045645 -16 1099  DH9DR DL9ZKL R-07
045700  -6 1097  DL9ZKL DH9DR RR73
045715 -14 1099  DH9DR DL9ZKL 73
045730  -7 1097  DL9ZKL DH9DR JO31 (x2)
045830  -5 1097  KE9I DH9DR -12 (x3)
050030  -3 1097  CQ DH9DR JO31 (x4)

10m

UTC    dB Audio  Message
142945 -16 1528  PP2RR DH9DR JO31 (x3)
143345  +2 1244  W2MGF DH9DR JO31 (x2)
143445  +1 1245  YO3JR DH9DR JO31
143645 -10 2393  EA1GTX DH9DR JO31 (x2)
065230 -10 1135  9J2FI DH9DR JO31
065715 -20 2217  DH9DR RA4ABH -17
162900 -12 2581  DH9DR EA3DVP RR73
171745 -20 1458  IW9FRA DH9DR R-07
094515  -6  904  LZ1VL DH9DR JO31
094645 -18 2225  R3KLE DH9DR JO31
094700 -15 2484  DH9DR R3KLE -18

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