DD4DZ — 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 DD4DZ, decoded by SO8OO in southeastern Poland. 52 FT8 messages attributed to this token as transmitter, on 60m, 40m, 10m, across 19 UTC dates in the available aggregate history. Observed between 2026-06-15 and 2026-10-16.

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 52 FT8 messages attributed to DD4DZ as the transmitting token by decoded message structure across 19 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (62%), followed by 10 m (37%) and 40 m (2%). Several six-hour UTC windows tied for the largest share (71%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (62%); the estimated median was -17 dB.

Overview

52
Messages attributed
19
UTC dates decoded
26
Active 15-min windows
-17 dB
Estimated median S/N

Bands

60m · 32 40m · 1 10m · 19
First attributed message: 2026-06-15
Last attributed message: 2026-10-16 17:56 UTC

Observed FT8 message patterns

Attributed sample
52 messages
Active dates
19 UTC dates
Estimated median S/N
-17 dB
Estimated 10th-90th percentile
-23 to -12 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 32, moderate (-15 to -9 dB) 20, strong (≥ -8 dB) 0.

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 DD4DZ in decoded directed-looking exchanges:

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 DD4DZ

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 · 25 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,054 km (approx.)
Last such locator decoded
2026-10-16 17:56 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 UTCBandDD4DZ S/NCounterpartCounterpart S/NMsgsCapture
10-23 07:24 40m - / -14 YO2UKG +11 / - 2 ✓ Closing fragment
10-20 17:35 40m - / -12 PD2MAC -12 / - 2 ✓ Closing fragment
10-18 09:57 40m - / -14 DL3EBJ -16 / - 2 ✓ Closing fragment
10-17 18:33 160m - / -19 DK6WS -9 / - 2 ✓ Closing fragment
10-17 18:26 60m - / -13 SP6SOZ -7 / - 2 ✓ Closing fragment
10-17 18:25 60m - / -2 DK1XAM -8 / - 2 ✓ Closing fragment
10-17 18:23 60m - / -20 DL5DQZ 0 / - 2 ✓ Closing fragment
10-17 18:15 60m - / -20 I4IKW +7 / - 3 ✓ Closing fragment
10-17 17:13 40m - / -19 DL6SDZ -4 / - 9 Partial capture
10-16 18:42 80m - / -13 DA6JN -4 / - 2 ✓ Closing fragment
10-16 18:16 60m - / -8 PI4RCK +9 / - 2 ✓ Closing fragment
10-16 18:14 60m - / -14 DK2BJ 0 / - 3 ✓ Closing fragment
10-16 18:12 60m - / -8 M1EPZ -4 / - 3 ✓ Closing fragment
10-16 17:57 60m - / -15 DL7ACA +3 / - 3 ✓ Closing fragment
10-16 17:50 60m - / -17 PA3BMB +1 / - 3 ✓ Closing fragment
10-16 17:48 60m - / - OZ5AGJ -9 / - 3 ✓ Closing fragment
10-16 06:42 80m - / -11 DG1FK -6 / - 2 ✓ Closing fragment
10-16 06:36 80m - / -19 DK7ZT +6 / - 2 ✓ Closing fragment
10-16 06:25 80m - / -21 DF2KD -20 / - 2 ✓ Closing fragment
10-16 05:40 60m - / -12 IK1WGX -11 / - 2 ✓ Closing fragment
10-16 04:52 80m - / -20 F6ECI -2 / - 3 ✓ Closing fragment
10-15 17:41 80m - / -14 DK6WS +1 / - 2 ✓ Closing fragment
10-15 17:10 60m - / -11 OE5DML 0 / - 3 ✓ Closing fragment
10-14 17:17 60m - / -21 PH2M +5 / - 2 ✓ Closing fragment
10-14 17:11 60m - / -10 DL8UD -2 / - 2 ✓ Closing fragment
10-14 17:05 60m - / -19 DL4DBL +2 / - 2 ✓ Closing fragment
10-13 06:07 60m - / -9 HB9EFK -6 / - 2 ✓ Closing fragment
10-12 17:17 60m - / -19 IZ6JPK -12 / - 2 ✓ Closing fragment
10-12 17:13 60m - / -17 OE3RCB -5 / - 3 Partial capture
10-12 17:10 60m - / -12 DL3TC +5 / - 2 ✓ Closing fragment
10-12 17:06 60m - / -17 PA7ZZ +4 / - 2 ✓ Closing fragment
10-12 17:02 60m - / -4 S57MPU +2 / - 2 ✓ Closing fragment
10-12 17:00 60m - / -22 EW6BZ -6 / - 2 ✓ Closing fragment
10-12 06:26 60m -24 / -9 F6JON -14 / 0 3 ✓ Full exchange observed
10-12 06:18 60m - / -17 PC2J -10 / - 3 ✓ Closing fragment
10-12 06:05 60m - / -4 SP2WRH +4 / - 2 ✓ Closing fragment
10-12 06:03 60m - / -5 G3SHK -6 / - 2 ✓ Closing fragment
10-12 05:57 60m -12 / - G8CVS - / -6 2 Partial capture
10-12 05:52 60m - / -16 F1TXI -4 / - 4 ✓ Closing fragment
10-11 15:55 60m - / +3 DL1JEL -2 / - 2 ✓ Closing fragment
10-11 15:49 60m - / -13 OT4N -12 / - 2 ✓ Closing fragment
10-11 09:42 10m - / -18 4X5MZ +6 / - 2 ✓ Closing fragment
10-10 17:32 80m - / -15 ON4CAS -14 / - 3 Partial capture
10-10 06:49 60m - / -16 G8OO -17 / - 3 ✓ Closing fragment
10-10 06:48 60m - / -5 G0ABI -6 / - 3 ✓ Closing fragment
10-09 18:38 60m - / - S58X 0 / - 3 ✓ Closing fragment
10-09 18:38 60m -15 / - PI4TX -16 / - 3 ✓ Closing observed
10-09 18:34 60m -15 / -5 DK0ND +6 / - 3 ✓ Closing observed
10-09 18:34 60m - / -20 LZ2VQ +2 / - 5 ✓ Closing fragment
10-09 18:33 60m - / -10 DF7RG +4 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
171330  -8 2608  DD4DZ DL6SDZ -19 (x8)
095700 -17 2286  DD4DZ DL3EBJ -14 (x2)
173545 -12  384  DD4DZ PD2MAC -12 (x2)
072300 -18 1806  DD4DZ DL0UEP JO30
072400 +11  366  DD4DZ YO2UKG -14 (x2)
160m 
UTC    dB Audio  Message
183300 -10 1360  DD4DZ DK6WS -19 (x2)
60m 
UTC    dB Audio  Message
181415  -3  235  DD4DZ M1EPZ RR73
181445  +0 2540  DD4DZ DK2BJ JO30 (x3)
181645 +11 1533  DD4DZ PI4RCK -08 (x2)
181530  +9  740  DD4DZ I4IKW -20 (x3)
182300  -3 1826  DD4DZ DL5DQZ -20 (x2)
182500  -8  625  DD4DZ DK1XAM -02 (x2)
182645  -5 1321  DD4DZ SP6SOZ -13 (x2)
80m 
UTC    dB Audio  Message
174100  +0 1500  DD4DZ DK6WS -14 (x2)
045245  -1 1170  DD4DZ F6ECI -20 (x3)
062545 -17 1442  DD4DZ DF2KD -21 (x2)
063545 -22 1502  DD4DZ DO9YU 73
063615  +7  826  DD4DZ DK7ZT -19 (x2)
064230  -5  758  DD4DZ DG1FK -11 (x2)
184215  -6  347  DD4DZ DA6JN -13 (x2)
054815 +12 2766  DD4DZ F5HNQ IN98
10m 
UTC    dB Audio  Message
152315 -24 1625  UX7QV DD4DZ R-10 (x2)
150645 -21 2190  DD4DZ EB3JT R-15
072415 -11 1185  DD4DZ IZ3NVR -14
075500 -11 2284  DD4DZ HB9ACA RR73
075630  +9 1067  DD4DZ DL3MIB -04 (x2)
075000  -2  803  DD4DZ UA9MA -18 (x2)
062530 -11 1972  DD4DZ 4Z5ML -18 (x2)
115430  +2 2366  DD4DZ OD5KU R-14 (x2)
094230  +4  638  DD4DZ 4X5MZ -18 (x2)
20m 
UTC    dB Audio  Message
081415 +14 1735  DD4DZ RA3Y -08 (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

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