DD7DAC — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

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

Receiver-side FT8 activity involving DD7DAC, decoded by SO8OO in southeastern Poland. 287 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 10 UTC dates in the available aggregate history. Observed between 2026-08-08 and 2026-10-23.

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 287 FT8 messages attributed to DD7DAC as the transmitting token by decoded message structure across 10 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (57%), followed by 20 m (15%) and 40 m (13%). Several six-hour UTC windows tied for the largest share (43%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (91%); the estimated median was +5 dB.

Overview

287

Messages attributed

UTC dates decoded

Active 15-min windows

+5 dB

Estimated median S/N

Bands

160m · 35 80m · 163 40m · 38 20m · 42 10m · 9

First attributed message: 2026-08-08
Last attributed message: 2026-10-23 20:37 UTC

Observed FT8 message patterns

Attributed sample: 287 messages
Active dates: 10 UTC dates
Estimated median S/N: +5 dB
Estimated 10th-90th percentile: -8 to +16 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 13, moderate (-15 to -9 dB) 12, strong (≥ -8 dB) 262.

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 DD7DAC in decoded directed-looking exchanges:

OD5ZZ · Lebanon ×3 CT2GQA · Portugal ×2 DL9KM · Fed. Rep. of Germany ×2 DA0LH · Fed. Rep. of Germany ×2 3A2MW · Monaco SV7BAY · Greece UN7AM · Kazakhstan DF9JL · Fed. Rep. of Germany DL2VN · Fed. Rep. of Germany R4GM · European Russia S57BTI · Slovenia UF4S · European Russia

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 DD7DAC

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 · 133 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,054 km (approx.)
Last such locator decoded: 2026-10-23 20:37 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	DD7DAC S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-23 20:34	160m	- / -14	S57BTI	-3 / -	3	✓ Closing fragment
10-23 20:28	160m	-4 / -	DL9KM	-15 / -19	2	✓ Closing observed
10-23 20:28	160m	-12 / -	DL2VN	-18 / -	3	✓ Closing observed
10-23 19:48	80m	+8 / -	PJ4/DH8BQA	- / -4	2	Partial capture
10-23 19:48	80m	+14 / -	OK1WCF	+26 / -	4	Partial capture
10-23 19:48	80m	- / -	UA9JTJ/4	-4 / -	4	Partial capture
10-23 19:47	80m	+14 / +1	IZ2QPP	-3 / -1	5	✓ Full exchange observed
10-23 19:45	80m	+22 / -	OD5ZZ	- / -25	3	✓ Closing fragment
10-21 20:13	80m	+18 / -	P4/WE9V	- / -	5	Partial capture
10-21 20:11	80m	+22 / -	PA0LDE	- / -10	2	✓ Closing fragment
10-21 20:09	80m	+22 / -	OE3IPU	+6 / -5	6	✓ Full exchange observed
10-21 20:09	80m	+16 / +8	LZ3SD	-8 / -6	4	✓ Full exchange observed
10-21 20:07	80m	- / -	RA6ABO	-5 / -	3	Partial capture
10-21 20:07	80m	+21 / -1	IQ4JO	-2 / +1	5	✓ Full exchange observed
10-21 20:03	80m	+18 / -	DL9FFM	- / -23	3	✓ Closing fragment
10-21 20:01	80m	+14 / -	OD5ZZ	-16 / -	2	✓ Closing observed
10-21 20:01	80m	+15 / -	DD0IPA	- / -4	3	Partial capture
10-21 19:58	80m	+14 / -	OD5ZZ	-14 / -16	5	✓ Closing observed
10-21 19:56	80m	+16 / -	R2EA/P	- / +9	2	Partial capture
10-08 22:48	80m	+14 / 0	US5WFL	-10 / -9	5	✓ Full exchange observed
10-08 22:39	80m	+9 / -13	KP4AA	-24 / -18	4	✓ Full exchange observed
10-08 22:37	80m	+8 / -7	EC3A	0 / +6	4	✓ Full exchange observed
10-08 22:35	80m	+9 / -	M7TUP	- / -13	2	✓ Closing fragment
10-08 22:33	80m	+10 / +4	CT2GQA	-16 / -	4	✓ Closing observed
10-08 22:31	80m	+16 / -	DH1HF	-16 / -19	5	✓ Closing observed
10-08 22:30	80m	+12 / -	DL6RS	+11 / +9	6	✓ Full exchange observed
10-08 22:30	80m	+16 / -	ON4MAP	- / +4	2	✓ Closing fragment
10-08 22:28	80m	+8 / -10	RU3VT	-8 / -16	4	✓ Full exchange observed
10-08 22:27	80m	+11 / +7	G0ANS	-6 / +5	3	✓ Full exchange observed
09-18 22:34	40m	-8 / -	VJ6X	- / -16	4	✓ Closing fragment
09-18 22:05	160m	-17 / -15	UF4S	-6 / -16	5	✓ Full exchange observed
09-18 21:09	160m	-7 / -	S03REC	- / -	2	Partial capture
09-18 21:06	160m	-20 / -21	R4GM	-8 / -16	6	✓ Full exchange observed
09-18 20:57	160m	-12 / -	CT2GQA	- / -12	2	✓ Closing fragment
09-18 20:56	160m	- / -	HG9FS	+8 / -	2	Partial capture
09-18 20:02	40m	+8 / -	VJ6X	- / -	6	Partial capture
09-09 19:12	160m	-5 / -	SP100PKP	- / +7	2	Partial capture
09-09 19:07	160m	+3 / +8	DF9JL	-14 / 0	4	✓ Full exchange observed
09-09 18:42	80m	+16 / -	UA1CEI/3	- / -	4	Partial capture
08-28 14:38	20m	- / -19	EX7DY	-6 / -	2	✓ Closing fragment
08-28 11:16	10m	-7 / -	3A2MW	- / -23	3	✓ Closing fragment
08-20 13:08	20m	+9 / -	HL5BMX	- / -23	3	✓ Closing fragment
08-20 13:05	20m	+10 / -	4L1FL	- / -12	4	✓ Closing fragment
08-20 13:04	20m	+9 / -	BA3NZ	- / -21	3	✓ Closing fragment
08-20 13:03	20m	+7 / -	HA7NB	- / -1	2	✓ Closing fragment
08-20 13:02	20m	+4 / +6	IV3JER	-3 / +3	5	✓ Full exchange observed
08-20 13:01	20m	+8 / -	YO2IS	- / -19	2	✓ Closing fragment
08-20 12:59	20m	+6 / -	IK4TVP	- / -	2	✓ Closing fragment
08-20 12:56	20m	+7 / -11	UA4CQS	-16 / -13	5	✓ Full exchange observed
08-20 12:54	20m	+7 / -6	EA5HM	-17 / 0	8	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
220615 -20 1629  UF4S DD7DAC 73
202815 -15 2538  CQ DD7DAC JO31
202830 -24  964  DD7DAC DL2VN JO51
202845  -4 2538  DL9KM DD7DAC -19
202930 -11  964  DD7DAC DL2VN JO51
203000 -15 1247  DD7DAC DL9KM RR73
203045 -12 2538  DL2VN DD7DAC RR73
203215 -17 2530  CQ DD7DAC JO31                        a1 (x2)
203430  +0 2687  DD7DAC S57BTI JN75 (x3)
203645 -13 2530  CQ DD7DAC JO31 (x3)

80m

UTC    dB Audio  Message
194730  -2 1659  DD7DAC IZ2QPP JN46
194745 +12  330  IZ2QPP DD7DAC -01
194800  -6 1659  DD7DAC IZ2QPP R+01
194815 +17  330  IZ2QPP DD7DAC RR73
194830  -1 1104  <DD7DAC> UA9JTJ/4
194830 +26  330  DD7DAC OK1WCF JO80
194830  -2 1659  DD7DAC IZ2QPP 73
194845 +17  330  PJ4/DH8BQA DD7DAC -04
194900  -5 1104  DD7DAC UA9JTJ/4
194915  -1  330  PJ4/DH8BQA DD7DAC -05
194930  -1 1105  DD7DAC UA9JTJ/4
194945 +10  330  OK1WCF DD7DAC +28
195000 -11 1104  DD7DAC UA9JTJ/4
195015 +14  330  OK1WCF DD7DAC +28 (x2)

40m

UTC    dB Audio  Message
055130  +5  335  OA4ENG DD7DAC JO31 (x3)
151200 -12 2281  DL/SP9DP DD7DAC JO31
200200  -2 2545  VJ6X DD7DAC JO31 (x6)
223200  -7 2656  VO1ACZ DD7DAC JO31
223400  -8 2656  VJ6X DD7DAC JO31 (x4)

20m

UTC    dB Audio  Message
130300  +0 1902  DD7DAC IV3JER 73
130315  +6 2325  HA7NB DD7DAC -01 (x2)
130415  +9 2324  BA3NZ DD7DAC JO31 (x3)
130545  +9 2324  4L1FL DD7DAC JO31 (x4)
130830 +10 2324  HL5BMX DD7DAC JO31 (x3)
143830  -6  335  DD7DAC EX7DY -19 (x2)

10m

UTC    dB Audio  Message
064400 -15  889  DD7DAC UN7AM RR73
064930  +5  481  SV7BAY DD7DAC R-13 (x2)
071030  -6  488  4O7DX DD7DAC JO31 (x4)
111615  -7 2176  3A2MW DD7DAC JO31 (x3)

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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