DJ3ZF — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JN49

Receiver-side FT8 activity involving DJ3ZF, decoded by SO8OO in southeastern Poland. 401 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, across 26 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-09-16.

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 401 FT8 messages attributed to DJ3ZF as the transmitting token by decoded message structure across 26 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (57%), followed by 60 m (33%) and 40 m (8%). 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 strong S/N range (63%); the estimated median was -6 dB.

Overview

401
Messages attributed
26
UTC dates decoded
86
Active 15-min windows
-6 dB
Estimated median S/N

Bands

160m · 5 80m · 229 60m · 134 40m · 33
First attributed message: 2026-06-09
Last attributed message: 2026-09-16 00:18 UTC

Observed FT8 message patterns

Attributed sample
401 messages
Active dates
26 UTC dates
Estimated median S/N
-6 dB
Estimated 10th-90th percentile
-15 to +5 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 34, moderate (-15 to -9 dB) 115, strong (≥ -8 dB) 252.

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 DJ3ZF 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 DJ3ZF

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
JN49 · 230 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
920 km (approx.)
Last such locator decoded
2026-09-16 00:17 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 UTCBandDJ3ZF S/NCounterpartCounterpart S/NMsgsCapture
09-16 00:13 80m -5 / - RI1FJZ - / -16 8 Partial capture
09-16 00:08 80m -4 / - RI1FJZ - / - 2 Partial capture
09-15 23:58 80m -5 / - RI1FJZ - / - 7 Partial capture
09-15 23:16 80m -4 / +10 ON1JP -24 / -8 4 ✓ Full exchange observed
09-15 23:16 80m -4 / - SN1A +4 / - 3 Partial capture
09-15 23:12 80m -11 / +6 DO7KGB +2 / +5 7 ✓ Full exchange observed
09-13 21:46 80m -4 / +1 DK3PM -4 / +4 5 ✓ Full exchange observed
09-13 21:15 80m -21 / - DO5RBB -10 / - 3 ✓ Closing observed
09-11 22:49 80m -17 / - DA6PI - / -5 5 ✓ Closing fragment
09-09 07:45 80m -16 / - DL0VW -2 / - 5 ✓ Full exchange observed
09-08 22:15 80m -8 / - DA6OOM -3 / -5 4 ✓ Closing observed
09-08 22:09 80m -5 / -2 DO6LE +6 / - 3 ✓ Closing observed
09-08 21:37 60m - / -16 DL80NRW +8 / - 2 Partial capture
09-08 21:37 60m -5 / - GX4RAF/P - / - 2 Partial capture
09-08 17:47 60m -16 / - DA1VID - / +7 3 ✓ Closing fragment
09-08 17:38 60m -14 / +10 DL0ABT -10 / +7 4 ✓ Full exchange observed
09-02 01:50 80m - / -8 OH6IH -4 / - 2 Partial capture
09-02 01:47 80m - / -8 OH6IH 0 / - 2 Partial capture
09-02 01:44 80m +3 / -4 YO3GNF -1 / +2 5 ✓ Full exchange observed
09-02 01:42 80m -1 / - DL7ZF - / +3 4 ✓ Closing fragment
09-01 23:43 80m +1 / - <...> - / -8 2 Partial capture
08-24 22:57 80m -2 / - DK4ET - / -2 6 ✓ Closing fragment
08-24 22:55 80m 0 / - DO9FSE - / -3 3 ✓ Closing fragment
08-24 22:41 80m 0 / -3 DK8HC -3 / +2 5 ✓ Full exchange observed
08-24 22:39 80m +1 / +1 DL7UKM -16 / - 5 ✓ Closing observed
08-24 21:02 80m -4 / - DO2DH -22 / -8 5 ✓ Full exchange observed
08-24 18:55 80m -5 / -1 DA6IT -4 / -5 4 ✓ Full exchange observed
08-24 18:52 80m -13 / - DO7DBI 0 / - 4 ✓ Closing observed
08-23 21:04 60m -11 / -3 DG5PW -6 / - 5 ✓ Full exchange observed
08-22 23:13 80m +6 / - VP8A - / -9 5 ✓ Closing fragment
08-09 23:42 80m +4 / - DL9DAJ +6 / - 5 ✓ Full exchange observed
08-09 23:11 60m 0 / - DL6LAL - / - 3 Partial capture
08-09 23:07 60m -3 / - DL6LAL - / - 2 Partial capture
08-09 23:01 60m -11 / - DL6LAL - / - 7 Partial capture
08-09 01:37 80m +8 / - HI8JCD - / -15 4 ✓ Closing fragment
08-09 01:25 80m -8 / -14 9J2FI -12 / -12 6 ✓ Full exchange observed
08-08 22:21 80m -6 / - 9J2FI - / - 12 Partial capture
08-08 22:19 80m -7 / - DL3HN +1 / +4 3 ✓ Closing observed
08-08 22:17 80m -5 / - GB8VJ -22 / -10 4 ✓ Closing observed
08-08 22:13 80m -4 / +5 DL9BDR -10 / -7 7 ✓ Full exchange observed
08-08 22:07 80m -8 / - DL0KHZ - / - 2 Partial capture
08-08 22:03 80m -7 / - DL0KHZ - / - 2 Partial capture
08-08 21:59 80m 0 / - DC1ASE - / -4 4 ✓ Closing fragment
08-08 21:54 80m - / 0 DP6K/P +6 / - 2 ✓ Closing fragment
08-08 21:14 80m -13 / -5 DH8BAC +14 / - 4 ✓ Closing observed
08-04 23:09 80m -11 / - DO8JB - / - 8 Partial capture
08-04 23:04 80m -9 / - <...> - / +8 3 Partial capture
08-03 23:48 60m -6 / - 9J2FI -6 / -14 7 ✓ Closing observed
08-03 23:28 60m -6 / -18 CE2SV -10 / -7 10 ✓ Full exchange observed
08-03 23:24 60m -10 / - CE2SV - / - 3 Partial capture

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
000115  -3 2108  RI1FJZ DJ3ZF JN49 (x15)
60m 
UTC    dB Audio  Message
210515 -12 2001  DG5PW DJ3ZF R+14
210530  -6  984  DJ3ZF DG5PW RR73
210545 -11 2001  DG5PW DJ3ZF 73
222300 -13 2001  OE6HLF DJ3ZF JN49
173800 -16 2001  DL0ABT DJ3ZF JN49
173815 -10 1018  DJ3ZF DL0ABT +10
173830 -13 2001  DL0ABT DJ3ZF R+07
173845 -10 1018  DJ3ZF DL0ABT RR73
174730 -19 2001  DA1VID DJ3ZF JN49 (x3)
213700  -6 2001  GX4RAF/P DJ3ZF JN49
213715  +7 1247  DJ3ZF DL80NRW -16
213730  -4 2001  GX4RAF/P DJ3ZF JN49
213745 +10 1247  DJ3ZF DL80NRW -19
40m 
UTC    dB Audio  Message
194515 -13 2004  DG3DAF DJ3ZF JN49
195745 -14 2004  ZL4KX DJ3ZF JN49 (x3)
195945 -13 2004  IW0FGX DJ3ZF R-02
200215 -14 2004  DG4MDO DJ3ZF 73
210945 -15 2004  DL3RWA DJ3ZF JN49 (x2)
211030  +1 2635  DJ3ZF DL3RWA +14
211045 -22 2004  DL3RWA DJ3ZF R+20
211100  -2 2635  DJ3ZF DL3RWA RR73
211115 -18 2004  DL3RWA DJ3ZF 73
235300 -17 2004  DL2AX DJ3ZF JN49 (x2)
144430 -12 2005  DK7JR DJ3ZF JN49
160m 
UTC    dB Audio  Message
223815  -3 1966  DL1HB DJ3ZF JN49
223830  -6 1582  DJ3ZF DL1HB -01
223845  -3 1966  DL1HB DJ3ZF R+04
223900 -10 1582  DJ3ZF DL1HB RR73
223915  -1 1966  DL1HB DJ3ZF 73
224030  -3 1966  M7CWF DJ3ZF R-02 (x2)
225415 -20 1357  DJ3ZF OK9DMR JO70 (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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