DL4DBM — 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 DL4DBM, decoded by SO8OO in southeastern Poland. 1,417 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 87 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-18.

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 1,417 FT8 messages attributed to DL4DBM as the transmitting token by decoded message structure across 87 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (47%), followed by 20 m (20%) and 60 m (19%). The busiest six-hour window was 11:00-17:00 UTC, containing 45% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9.9 dB.

Overview

1,417
Messages attributed
87
UTC dates decoded
271
Active 15-min windows
-9.9 dB
Estimated median S/N

Bands

First attributed message: 2026-06-06
Last attributed message: 2026-10-18 12:58 UTC

Observed FT8 message patterns

Attributed sample
1,417 messages
Active dates
87 UTC dates
Estimated median S/N
-9.9 dB
Estimated 10th-90th percentile
-18 to +1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 275, moderate (-15 to -9 dB) 508, strong (≥ -8 dB) 634.

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.

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 DL4DBM

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 · 640 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,054 km (approx.)
Last such locator decoded
2026-10-18 12:57 UTC

Other locator fields attributed to this token: JO41 (8).

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 UTCBandDL4DBM S/NCounterpartCounterpart S/NMsgsCapture
10-18 12:57 40m -17 / - G6DXY - / -17 2 Partial capture
10-17 16:14 40m -4 / 0 DB4SNK -2 / -6 5 ✓ Full exchange observed
10-17 14:15 40m -19 / - HB9HJI - / +4 3 ✓ Closing fragment
10-17 14:07 40m -17 / - HB9HJI - / - 9 Partial capture
10-17 12:37 40m -16 / -3 DD3ZZ -16 / - 4 ✓ Closing observed
10-17 12:16 40m -13 / -10 SP3AT -16 / - 2 ✓ Closing observed
10-15 15:19 40m - / - SA7PGN -12 / - 2 Partial capture
10-15 15:12 40m -14 / +5 DL1YFS -15 / - 5 ✓ Full exchange observed
10-15 15:10 40m -14 / - F4HWM -16 / +9 3 ✓ Closing observed
10-15 15:05 40m -8 / - DL8NDV/P - / -11 2 ✓ Closing fragment
10-15 15:04 40m -8 / - M0KQV - / +7 2 ✓ Closing fragment
10-15 15:03 40m -4 / - EA5JKT - / -19 2 ✓ Closing fragment
10-15 15:02 40m -9 / - OZ1ITS - / -9 2 ✓ Closing fragment
10-15 15:01 40m -14 / - DK6MR - / -18 2 ✓ Closing fragment
10-15 14:59 40m -10 / - HB9DLT - / -2 2 ✓ Closing fragment
10-15 14:57 40m -12 / -14 SP9XG -8 / -4 8 ✓ Full exchange observed
10-15 14:56 40m -9 / +3 DK5UR -4 / +3 5 ✓ Full exchange observed
10-15 14:35 40m - / -1 HB9DLT -9 / - 3 Partial capture
10-15 14:34 40m -16 / - G0RQL - / -4 2 ✓ Closing fragment
10-15 14:32 40m -15 / +4 DL7DL -13 / - 4 ✓ Closing observed
10-15 13:59 40m - / - DD6UVO -10 / - 3 Partial capture
10-14 12:40 40m -14 / - PD5RAY - / -9 2 ✓ Closing fragment
10-14 12:38 40m -14 / - DL6ZOG -8 / +10 5 ✓ Full exchange observed
10-14 12:36 40m -14 / - M9PMB - / -9 2 ✓ Closing fragment
10-14 12:35 40m - / -22 RX3AEX -10 / - 10 ✓ Closing fragment
10-14 12:34 40m -14 / - DK7CVD - / - 3 ✓ Closing fragment
10-14 12:30 40m -15 / - F3CJ - / -14 2 ✓ Closing fragment
10-13 05:06 160m 0 / - PA2PF - / -7 2 ✓ Closing fragment
10-13 05:04 160m -4 / - DJ1NE -21 / +1 3 ✓ Closing observed
10-13 05:03 160m -4 / - F4LZZ - / -14 2 ✓ Closing fragment
10-13 05:01 160m -2 / +5 DF4WQ -3 / 0 5 ✓ Full exchange observed
10-12 19:49 60m -7 / - G3TKT -6 / - 5 ✓ Full exchange observed
10-12 19:47 60m -8 / -7 9H6C -16 / 0 3 Partial capture
10-12 19:44 60m -4 / - <...> - / -15 2 Partial capture
10-12 19:41 60m -6 / - EA7GNT - / -15 2 ✓ Closing fragment
10-12 19:39 60m -6 / - DL2CW - / -14 2 ✓ Closing fragment
10-12 19:38 60m -10 / -7 DJ1TU -6 / +8 4 ✓ Full exchange observed
10-12 19:37 60m 0 / - DL1TJ - / -14 2 ✓ Closing fragment
10-11 15:11 40m -9 / - SA6ABU - / -7 3 ✓ Closing fragment
10-11 15:11 40m -7 / - PD1AJJ -13 / -14 7 ✓ Closing observed
10-11 15:08 40m - / -2 G6LEE -14 / - 2 ✓ Closing fragment
10-11 15:07 40m - / - SP9ALK 0 / - 3 Partial capture
10-11 15:07 40m -9 / - EC5CSW - / 0 2 ✓ Closing fragment
10-11 15:05 40m -6 / - EA3HYJ - / -10 2 ✓ Closing fragment
10-11 15:03 40m -12 / - DL2LTH - / - 2 ✓ Closing fragment
10-11 15:02 40m - / -6 PE1MPI -16 / - 2 Partial capture
10-11 15:00 40m - / - PD1AJJ -20 / - 3 Partial capture
10-11 14:59 40m -6 / -15 DK0IL -8 / +4 4 ✓ Full exchange observed
10-11 14:57 40m - / - OE7RMT/P -9 / - 2 ✓ Closing fragment
10-11 14:53 40m -14 / -2 HB9ELE +9 / +6 6 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m
UTC    dB Audio  Message
141115 -16 1638  HB9HJI DL4DBM JO31 (x3)
141445 -13 1638  DG6COC DL4DBM RR73
141515 -16 1638  HB9HJI DL4DBM JO31 (x3)
141930 -17 1638  F4JKY/P DL4DBM JO31
161445  -3 1003  DB4SNK DL4DBM JO31
161500  +0 1003  DL4DBM DB4SNK +00
161515  -7 1003  DB4SNK DL4DBM R-06
161530  -5 1003  DL4DBM DB4SNK RR73
161545  -2 1003  DB4SNK DL4DBM 73
125700 -15 2084  G6DXY DL4DBM JO31 (x2)
160m
UTC    dB Audio  Message
050145  -3 1934  DL4DBM DF4WQ R+05
050200  -1 1120  DF4WQ DL4DBM RR73
050215  -7 1934  DL4DBM DF4WQ 73
050230  +1 1120  CQ DL4DBM JO31
050300  +1 1120  9H1ES DL4DBM JO31
050330  -4 1120  F4LZZ DL4DBM -14 (x2)
050430  +1 1120  CQ DL4DBM JO31
050445 -21 1288  DL4DBM DJ1NE JN39
050500  +1 1120  DJ1NE DL4DBM +01 (x2)
050600  -2 1120  CQ DL4DBM JO31
050630  -1 1120  PA2PF DL4DBM R-07 (x2)
050730  +3 1120  CQ DL4DBM JO31
60m
UTC    dB Audio  Message
194645  -6 1245  CQ DL4DBM JO31
194715  -4 1246  9H6C DL4DBM JO31
194730 -16 1028  DL4DBM 9H6C -07
194745 -11 1246  9H6C DL4DBM R+00
194830  -4 1246  CQ DL4DBM JO31 (x3)
194945  -5  679  DL4DBM G3TKT IO92
195000  -7 1246  G3TKT DL4DBM +14
195015  -5  679  DL4DBM G3TKT R+25
195030  -7 1246  G3TKT DL4DBM RR73
195045  -9  679  DL4DBM G3TKT 73
045815  -3 1146  CQ DL4DBM JO31 (x3)
80m
UTC    dB Audio  Message
034145  +0 1312  G3TKT DL4DBM RR73
034215  +5 1312  CQ DL4DBM JO31
034245  +2 1312  ON4MAP DL4DBM -09
034300 -18 1072  DL4DBM ON4MAP R+09
034315  +5 1312  ON4MAP DL4DBM RR73
034330 -16 1072  DL4DBM ON4MAP 73
034345  -1 1312  CQ DL4DBM JO31
034400  -9 1803  DL4DBM UR5RBP KO51
034415  -6 1312  CQ DL4DBM JO31
045145  +7 1119  DL4DBM I1WQR JN44 (x2)
045230 -12 1120  I1WQR DL4DBM RR73
045245  +9 1118  DL4DBM I1WQR 73
045300 -13 1120  KF8EXX DL4DBM JO31
045330  -7 1120  CQ DL4DBM JO31
20m
UTC    dB Audio  Message
131000  -8 1006  M0RWV DL4DBM JO31 (x4)
131230  +0 1006  G6DXY DL4DBM JO31 (x2)
140830  -2  422  G7LFC DL4DBM JO31 (x3)
190330  -3 2412  Z31PM DL4DBM JO31 (x2)
091415  -8 1729  F4JKY DL4DBM R-02 (x2)
223815  -4 2567  N2YW DL4DBM JO31 (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.

CW

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

Explore CW reception at SO8OO

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