DO2DH — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO54

Receiver-side FT8 activity involving DO2DH, decoded by SO8OO in southeastern Poland. 215 FT8 messages attributed to this token as transmitter, on 80m, 10m, across 15 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-06.

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 215 FT8 messages attributed to DO2DH as the transmitting token by decoded message structure across 15 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (84%), followed by 10 m (16%). Several six-hour UTC windows tied for the largest share (89%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (67%); the estimated median was -17.2 dB.

Overview

215

Messages attributed

UTC dates decoded

Active 15-min windows

-17.2 dB

Estimated median S/N

Bands

80m · 180 10m · 35

First attributed message: 2026-06-08
Last attributed message: 2026-09-06 20:38 UTC

Observed FT8 message patterns

Attributed sample: 215 messages
Active dates: 15 UTC dates
Estimated median S/N: -17.2 dB
Estimated 10th-90th percentile: -24 to -12 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 143, moderate (-15 to -9 dB) 67, strong (≥ -8 dB) 5.

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 DO2DH in decoded directed-looking exchanges:

HA7TM · Hungary ×2 DK8HC · Fed. Rep. of Germany ×2 9A3AUH · Croatia CU2AP · Azores DL3MIB · Fed. Rep. of Germany EA3AKY · Spain EA5HEU · Spain F5SZY · France F8AEJ · France G4DBW · England HB9ACA · Switzerland HB9DKG · Switzerland

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 DO2DH

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: JO54 · 137 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 892 km (approx.)
Last such locator decoded: 2026-09-06 20:38 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	DO2DH S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-06 20:48	80m	- / -	HB9HRR	-12 / -	2	✓ Closing fragment
09-06 20:26	80m	- / -25	9A0R	-1 / -	2	✓ Closing fragment
09-06 18:59	80m	- / -7	IU6KKW	-18 / -	2	Partial capture
09-06 18:57	80m	- / -11	DO6MFD	-10 / -	2	✓ Closing fragment
09-06 18:53	80m	- / -	DL5DQZ	-7 / -	2	Partial capture
09-06 18:38	80m	-13 / -7	PA3FPQ	+6 / -	3	✓ Closing observed
09-06 18:33	80m	-18 / -	MM0ULL	-13 / -	2	✓ Closing observed
09-06 18:31	80m	-12 / -	SP100PKP	- / -	2	Partial capture
09-06 18:16	80m	-14 / -	SQ100PKP	- / -	3	Partial capture
09-06 18:09	80m	- / -9	LA3BO	+12 / -	2	✓ Closing fragment
09-06 18:07	80m	- / -12	OH3OJ	0 / -	2	✓ Closing fragment
09-06 18:05	80m	- / -16	RA2FU	+5 / -	3	✓ Closing fragment
09-06 17:14	80m	- / -18	YL2IR	-16 / -	3	Partial capture
09-06 17:07	80m	-20 / -6	DO2XB	-4 / +2	5	✓ Full exchange observed
09-05 20:20	160m	- / -15	SP2FWC	+6 / -	2	✓ Closing fragment
09-05 20:17	160m	- / -20	HA7TM	+11 / -	3	✓ Closing fragment
09-05 19:18	160m	- / -19	PI4DX	+3 / -	4	✓ Closing fragment
09-05 18:39	160m	- / -13	OK1FRG	+8 / -	2	✓ Closing fragment
09-02 20:29	160m	- / -24	9A2RD	-8 / -	6	✓ Closing fragment
09-02 20:16	160m	- / -15	YL3CW	-16 / -	2	✓ Closing fragment
09-02 20:10	160m	- / -18	EI8IQ	-6 / -	2	✓ Closing fragment
09-02 19:58	160m	- / -17	DL7CX	-5 / -	5	✓ Closing fragment
09-02 19:43	160m	- / -20	LX1JX	-4 / -	4	✓ Closing fragment
09-02 19:21	160m	- / -17	LY7M	+14 / -	2	✓ Closing fragment
09-02 19:05	160m	- / -18	OK1DXR	0 / -	6	✓ Closing fragment
09-02 19:04	160m	- / -14	OH6RE	+5 / -	2	✓ Closing fragment
09-02 18:56	160m	- / -17	PA3FR	-8 / -	2	✓ Closing fragment
09-02 17:27	160m	- / -	SP3BPU	+1 / -	2	✓ Closing fragment
08-27 09:54	10m	- / -2	EA3AKY	-7 / -	2	✓ Closing fragment
08-26 19:32	80m	- / 0	SN40KZE	+5 / -	2	Partial capture
08-26 19:23	80m	-12 / -	DO4FOX	- / -13	3	✓ Closing fragment
08-26 19:14	80m	-14 / -	SP1BMK	- / -	2	Partial capture
08-26 18:42	80m	-16 / -10	RL2F	-18 / -	5	✓ Full exchange observed
08-26 18:29	80m	-14 / -19	DO9KB	-14 / +2	4	✓ Full exchange observed
08-26 18:24	80m	-14 / -	OE9MOI	- / -	2	Partial capture
08-26 18:13	80m	-16 / -	OH4SS	- / -	2	Partial capture
08-26 17:54	80m	-20 / -16	OK1VKX	+7 / 0	7	✓ Full exchange observed
08-24 21:10	80m	-12 / -10	PA0EBG	-14 / -	5	✓ Full exchange observed
08-24 21:07	80m	-16 / -15	HA7TM	+12 / -	4	✓ Full exchange observed
08-24 21:02	80m	-22 / -8	DJ3ZF	-4 / -	5	✓ Full exchange observed
08-24 21:02	80m	-15 / -17	R2HB	+1 / -1	11	✓ Full exchange observed
08-24 20:59	80m	-16 / -	IV3IHV	- / -	3	Partial capture
08-24 20:54	80m	-14 / -	IK4LZH	- / -	2	Partial capture
08-24 20:52	80m	-19 / -	DA6LRW	-10 / -10	4	✓ Closing observed
08-24 20:49	80m	-12 / -	F5RRS	- / -	3	Partial capture
08-24 20:46	80m	-13 / -	CT2HEX	- / -	3	Partial capture
08-24 20:44	80m	-15 / -13	HA7TM	+22 / -	5	Partial capture
08-24 20:41	80m	-11 / -	D2UY	- / -15	3	✓ Closing fragment
08-24 20:28	80m	-14 / -7	OZ3MC	-1 / +6	3	✓ Full exchange observed
08-24 20:25	80m	-14 / -	ES0MVM	- / -4	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
184145 -23 1506  F5UGX DO2DH JO54
185300  -9 1721  DO2DH DL5DQZ JO61 (x2)
185700  -8 1204  DO2DH DO6MFD -11 (x2)
185930 -16 1508  DO2DH IU6KKW -07 (x2)
201830 -23 1590  OM2WW DO2DH JO54
202645  +1 2183  DO2DH 9A0R R-25 (x2)
203815 -11 1511  SQ100PKP DO2DH JO54
204600  +3 1309  DO2DH SP5DFK/QRP -19
204800 -11  418  DO2DH HB9HRR RR73
204830  -2  773  DO2DH OE3OOG JN87
204830 -12  418  DO2DH HB9HRR 73

160m

UTC    dB Audio  Message
203045 -13  996  DO2DH 9A2RD -24 (x4)
183915  +9  310  DO2DH OK1FRG -13 (x2)
191800  +7 1051  DO2DH PI4DX -19 (x4)
201730 +11 1499  DO2DH HA7TM KN07 (x3)
202030  +6  722  DO2DH SP2FWC -15 (x2)

10m

UTC    dB Audio  Message
110445  -7 2685  DO2DH 9A3AUH RR73
112500  +0 1124  DO2DH DL3MIB -04 (x2)
112800  -2 2617  DO2DH HB9DKG RR73 (x2)
123930  -7 1699  DO2DH F5ADE +00 (x2)
124715  +3 2495  DO2DH HB9EFK -07 (x2)
140745  -2 2108  DO2DH IK1RQX +02
140830 -24 1610  IK1RQX DO2DH R+02 (x2)
084515 -12 1872  DO2DH CU2AP RR73
095445  -5 1222  DO2DH EA3AKY -02 (x2)

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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