DD3ZZ — 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: JN69

Receiver-side FT8 activity involving DD3ZZ, decoded by SO8OO in southeastern Poland. 1,909 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 28 UTC dates in the available aggregate history. Observed between 2026-08-21 and 2026-10-22.

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 1,909 FT8 messages attributed to DD3ZZ as the transmitting token by decoded message structure across 28 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%), followed by 20 m (0%). Most decodes (72%) fell within the six-hour window 15:00-21:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (64%); the estimated median was -6 dB.

Overview

1,909
Messages attributed
28
UTC dates decoded
163
Active 15-min windows
-6 dB
Estimated median S/N

Bands

40m · 1,900 20m · 9
First attributed message: 2026-08-21
Last attributed message: 2026-10-22 17:39 UTC

Observed FT8 message patterns

Attributed sample
1,909 messages
Active dates
28 UTC dates
Estimated median S/N
-6 dB
Estimated 10th-90th percentile
-15 to +1.5 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 177, moderate (-15 to -9 dB) 503, strong (≥ -8 dB) 1,229.

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 DD3ZZ 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 DD3ZZ

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
JN69 · 615 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
634 km (approx.)
Last such locator decoded
2026-10-22 17:39 UTC

Other locator fields attributed to this token: JN68 (159).

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 UTCBandDD3ZZ S/NCounterpartCounterpart S/NMsgsCapture
10-22 17:35 40m -18 / - EB4FSM - / -18 4 Partial capture
10-22 17:28 40m -18 / -3 IU7EDY -17 / - 6 Partial capture
10-22 17:25 40m - / -14 IK8MKK -11 / - 2 ✓ Closing fragment
10-21 20:57 40m - / -8 G8BCG -17 / - 2 ✓ Closing fragment
10-21 20:37 40m - / -15 IZ8XXE -11 / - 4 ✓ Closing fragment
10-21 19:31 40m - / - TA2E -12 / - 2 ✓ Closing fragment
10-21 19:25 40m - / -5 M6YDZ -17 / - 2 Partial capture
10-21 17:00 40m -5 / - M8FQT -13 / -9 8 Partial capture
10-21 16:58 40m - / - PD5BUS -5 / - 3 Partial capture
10-21 16:53 40m -8 / - M8NAQ - / -15 6 Partial capture
10-21 16:47 40m -8 / - R1DD - / -3 2 Partial capture
10-21 16:45 40m -12 / - IW0DCR - / -10 2 Partial capture
10-21 16:41 40m -6 / - E70SZ - / +2 3 ✓ Closing fragment
10-21 16:39 40m -9 / - M8NAQ - / -12 3 Partial capture
10-21 16:37 40m -5 / -20 DB2ZR -1 / -2 4 Partial capture
10-21 16:31 40m -12 / +1 PD8MD -4 / - 4 ✓ Closing observed
10-21 16:29 40m -12 / - IK8YFU - / -3 2 Partial capture
10-21 16:25 40m -6 / -18 OE8RMJ -14 / +4 5 ✓ Full exchange observed
10-20 21:26 40m - / -20 EA1AUO -12 / - 2 ✓ Closing fragment
10-20 21:12 40m - / -20 EA7UW -13 / - 4 Partial capture
10-20 20:12 40m - / -14 F3CJ -20 / - 3 Partial capture
10-20 20:12 40m - / -16 UA3ALY +5 / - 2 ✓ Closing fragment
10-20 20:09 40m -4 / - M7ECR - / 0 2 Partial capture
10-20 20:07 40m -4 / - EA3CS - / -6 2 Partial capture
10-20 20:05 40m -1 / - SP5MIG - / -4 4 Partial capture
10-20 20:02 40m 0 / - OK1VM - / - 3 Partial capture
10-20 20:00 40m +2 / - LA6OCA - / +7 4 ✓ Closing fragment
10-20 19:56 40m -8 / -19 LZ1DPP -5 / -25 11 ✓ Full exchange observed
10-20 19:50 40m -6 / -8 ON2BCB -1 / -5 4 ✓ Full exchange observed
10-20 19:48 40m -8 / - PD0LBY - / +4 2 Partial capture
10-20 19:44 40m -2 / - ER3BN - / - 2 Partial capture
10-20 19:42 40m 0 / - DL4DO - / - 2 Partial capture
10-20 19:40 40m +4 / - US2UM - / - 2 Partial capture
10-20 16:59 40m - / -9 PD2MAC -8 / - 14 Partial capture
10-20 16:57 40m - / - OE8RMJ -4 / - 2 Partial capture
10-20 16:51 40m 0 / - SP4GDW - / -1 2 Partial capture
10-20 16:49 40m - / - DG7DBM -18 / - 5 Partial capture
10-20 16:49 40m +4 / -14 DK6MR -4 / +4 6 ✓ Full exchange observed
10-20 16:48 40m 0 / -7 IK2JYT +7 / - 4 Partial capture
10-20 16:45 40m +1 / +1 DK5UR +6 / +7 7 ✓ Full exchange observed
10-20 16:44 40m -2 / - DF9ES - / -1 2 ✓ Closing fragment
10-20 16:43 40m -2 / -4 SP2SGZ +3 / +5 3 Partial capture
10-20 16:41 40m -4 / -11 S53AK -4 / - 5 ✓ Full exchange observed
10-20 16:36 40m -4 / - UW5KW - / +8 3 ✓ Closing fragment
10-20 16:36 40m -6 / -9 RA9CIN -18 / -3 4 Partial capture
10-20 16:34 40m -2 / - UN0GY - / - 2 Partial capture
10-20 16:30 40m - / +2 DK1IO/T -11 / - 4 ✓ Closing fragment
10-20 16:30 40m +6 / +1 IK4TVP -4 / -7 7 ✓ Full exchange observed
10-20 16:28 40m +5 / -1 YO9IAB +3 / - 5 ✓ Full exchange observed
10-20 16:27 40m -3 / - PA2WDR - / - 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
173000 -20 1364  DD3ZZ IU7EDY R-03 (x3)
173315 -18 1289  IU7EDY DD3ZZ RRR
173415 -20 1289  CQ POTA DD3ZZ JN69
173515 -24 1288  EB4FSM DD3ZZ -18 (x4)
173715  -8 1289  CQ POTA DD3ZZ JN69 (x6)
20m 
UTC    dB Audio  Message
110600  -9 1835  DD3ZZ SM6KKX R-19 (x3)
110730  -6  412  DD3ZZ EB5AL IM99 (x3)
110830  -8 1009  DD3ZZ 4O4DB R-05
110900  -2  414  DD3ZZ EB5AL IM99
110900  -3  615  DD3ZZ 4O4DB R-05
110930  -2  415  DD3ZZ EB5AL IM99
110930 -11  615  DD3ZZ 4O4DB 73
111000  -4  415  DD3ZZ EB5AL R-13 (x2)
173130 -14 2141  BG4UCZ DD3ZZ JN68
173200 -16 2142  CQ DD3ZZ JN68

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