DD7ZT — 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: JO40

Receiver-side FT8 activity involving DD7ZT, decoded by SO8OO in southeastern Poland. 37 FT8 messages attributed to this token as transmitter, on 80m, 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-08-30 and 2026-09-01.

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 37 FT8 messages attributed to DD7ZT as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (81%), followed by 80 m (19%). In this small sample, the estimated median decoder S/N was -11 dB; no usual signal pattern is inferred.

Overview

37
Messages attributed
2
UTC dates decoded
10
Active 15-min windows
-11 dB
Estimated median S/N

Bands

80m · 7 20m · 30
First attributed message: 2026-08-30
Last attributed message: 2026-09-01 21:29 UTC

Observed FT8 message patterns

Attributed sample
37 messages
Active dates
2 UTC dates
Estimated median S/N
-11 dB
Estimated 10th-90th percentile
-17 to -3 dB
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 21, strong (≥ -8 dB) 9.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with DD7ZT 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 DD7ZT

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
JO40 · 26 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
911 km (approx.)
Last such locator decoded
2026-09-01 21:29 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 UTCBandDD7ZT S/NCounterpartCounterpart S/NMsgsCapture
09-01 21:28 80m -10 / - MI0OBC - / - 2 Partial capture
09-01 21:27 80m -11 / -3 DB100FT -2 / - 3 Partial capture
09-01 18:31 80m -9 / -2 HA1BLA 0 / - 3 ✓ Closing observed
09-01 18:20 80m - / +10 PI4DX +2 / - 2 ✓ Closing fragment
09-01 18:17 80m - / -18 YO4NT +2 / - 2 ✓ Closing fragment
09-01 18:07 80m -14 / - SP5DFG - / - 2 Partial capture
09-01 11:11 10m - / +1 I8OHQ -4 / - 2 ✓ Closing fragment
08-30 18:38 20m -10 / - IK8IUQ - / - 3 Partial capture
08-30 17:48 20m -14 / -8 EA5IXH -1 / -15 5 ✓ Full exchange observed
08-30 17:42 20m -4 / - OE6HTG - / +4 2 Partial capture
08-30 17:39 20m -1 / +1 IK8NRQ -1 / -2 3 ✓ Full exchange observed
08-30 17:34 20m - / -17 G3EFG -2 / - 3 Partial capture
08-30 17:28 20m -14 / - TA2LE +1 / -2 4 ✓ Closing observed
08-30 17:05 20m - / +3 EA5HPF +6 / - 2 ✓ Closing fragment
08-30 16:31 20m -14 / - DL4OAN - / -15 2 Partial capture
08-30 16:19 20m -10 / - ES3BH - / - 4 Partial capture
08-30 16:04 20m - / +9 SA3SHN +2 / - 3 ✓ Closing fragment
08-30 15:54 20m - / -4 EC5M +12 / - 2 ✓ Closing fragment
08-30 15:52 20m -16 / -8 CT7AUT -4 / - 4 ✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
180700 -16 1492  SP5DFG DD7ZT JO40 (x2)
181715  -1 1692  DD7ZT YO4NT -18 (x2)
182045  +2  894  DD7ZT PI4DX +10 (x2)
183130  -9 1492  HA1BLA DD7ZT JO40
183145  -1  649  DD7ZT HA1BLA -02 (x2)
184600  +3 1319  DD7ZT <...> -07
212730 -12 1492  DB100FT DD7ZT JO40 (x2)
212830 -10 1492  MI0OBC DD7ZT JO40
212845  -2 1491  DD7ZT DB100FT -03
212900 -11 1492  MI0OBC DD7ZT JO40
10m 
UTC    dB Audio  Message
111145  -1  417  DD7ZT I8OHQ +01 (x2)
20m 
UTC    dB Audio  Message
174445 -10 1533  CQ DD7ZT JO40 (x3)
174745 -11 1533  TA4SSK DD7ZT RR73
174800  -2 1003  DD7ZT EA5IXH IM98
174815 -15 1533  EA5IXH DD7ZT -15
174830  -3 1003  DD7ZT EA5IXH R-08
174845 -13 1533  EA5IXH DD7ZT RR73
174900  +2 1003  DD7ZT EA5IXH 73
175100  -4 1533  9A6NCC DD7ZT JO40
183800 -14 1534  IK8IUQ DD7ZT JO40 (x3)
184100 -15 1534  YO7LPM DD7ZT JO40
184300  -3 1534  II3DRC DD7ZT JO40

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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