DL7UDK — 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: JN48

Receiver-side FT8 activity involving DL7UDK, decoded by SO8OO in southeastern Poland. 591 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 19 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-11-05.

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 591 FT8 messages attributed to DL7UDK as the transmitting token by decoded message structure across 19 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (24%), followed by 40 m (21%) and 60 m (18%). Most decodes (74%) fell within the six-hour window 21:00-03:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -6.5 dB.

Overview

591
Messages attributed
19
UTC dates decoded
71
Active 15-min windows
-6.5 dB
Estimated median S/N

Bands

First attributed message: 2026-06-09
Last attributed message: 2026-11-05 02:06 UTC

Observed FT8 message patterns

Attributed sample
591 messages
Active dates
19 UTC dates
Estimated median S/N
-6.5 dB
Estimated 10th-90th percentile
-17 to +4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 101, moderate (-15 to -9 dB) 148, strong (≥ -8 dB) 342.

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 DL7UDK

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
JN48 · 361 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
941 km (approx.)
Last such locator decoded
2026-11-05 02:06 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 UTCBandDL7UDK S/NCounterpartCounterpart S/NMsgsCapture
11-05 02:04 80m +1 / - UA9XL/P - / - 5 Partial capture
11-05 02:00 80m +2 / -17 RN6HK -2 / -2 6 ✓ Full exchange observed
11-05 02:00 80m 0 / -7 9A5E +11 / +9 8 ✓ Full exchange observed
11-05 01:58 80m +4 / - CT7BRV -6 / +5 4 ✓ Closing observed
11-05 01:55 60m +3 / - VA3RTG - / - 2 Partial capture
11-05 01:54 60m +8 / - VE3GKA - / - 2 Partial capture
11-05 01:51 60m 0 / - W4EBB - / -8 5 ✓ Closing fragment
11-05 01:46 40m -14 / - EX8ABR - / -13 4 Partial capture
11-05 01:38 40m -11 / - VP2MCV - / - 2 Partial capture
11-05 01:35 40m -14 / - 9Y4C - / - 2 Partial capture
11-05 01:34 40m -12 / - CU2DX - / - 2 Partial capture
11-05 01:12 160m -1 / - AA1K - / - 4 Partial capture
11-05 01:10 160m -2 / - 6W/IK2HKT - / - 4 Partial capture
11-05 01:05 160m -6 / - ON8WR - / -4 2 ✓ Closing fragment
11-05 00:59 160m +4 / - S56P +2 / +2 6 ✓ Full exchange observed
11-05 00:59 160m 0 / +3 SP5EXA +15 / +2 5 ✓ Full exchange observed
11-05 00:56 160m 0 / - CT7AUT - / - 5 Partial capture
11-05 00:53 160m +3 / -6 LA9JKA 0 / +6 8 ✓ Full exchange observed
11-05 00:51 160m -3 / -2 IW4AOT +2 / +10 5 ✓ Full exchange observed
11-05 00:49 160m -4 / -8 5B4AMX -18 / -14 6 ✓ Full exchange observed
11-05 00:44 80m +2 / - UB5O/M - / - 8 Partial capture
11-05 00:42 80m -2 / - SP9TBT/5 - / - 4 Partial capture
11-05 00:40 80m 0 / - LA1HW - / -12 2 ✓ Closing fragment
11-05 00:40 80m -8 / +1 ON4MAP -9 / -12 7 ✓ Full exchange observed
11-05 00:38 80m -1 / - YU4RBL -15 / -21 2 Partial capture
11-05 00:37 80m -2 / -15 DA6SL -6 / +1 4 ✓ Full exchange observed
11-05 00:35 80m +3 / -6 SP8HDC -12 / -6 5 ✓ Full exchange observed
11-05 00:31 80m +3 / - K1XO - / -25 3 Partial capture
11-05 00:30 80m -6 / -1 IQ4JO -2 / +9 5 ✓ Full exchange observed
11-05 00:28 80m -2 / - EX7DY - / - 3 Partial capture
11-05 00:26 80m +4 / -11 EA8AR -8 / 0 5 ✓ Full exchange observed
11-05 00:25 80m +8 / - ON1JP -19 / -11 3 ✓ Closing observed
11-05 00:23 80m +4 / -9 EA4D -14 / -1 5 ✓ Full exchange observed
11-05 00:23 80m - / - SP8HDC -2 / - 2 Partial capture
11-05 00:21 80m 0 / - TJ1GD - / - 3 Partial capture
11-05 00:20 80m -3 / - DA6SL - / 0 2 Partial capture
11-05 00:18 80m - / - DA6SL +1 / - 2 Partial capture
11-05 00:17 80m -5 / -6 EB5CS -9 / -5 5 ✓ Full exchange observed
11-05 00:17 80m -6 / -14 G0AZH -7 / -2 9 ✓ Full exchange observed
11-05 00:17 80m -2 / +4 IU2THY +23 / - 7 ✓ Full exchange observed
11-05 00:15 80m -6 / - 6W/IK2HKT - / +10 3 Partial capture
11-05 00:13 80m +3 / +1 CT2KNA -12 / 0 5 ✓ Full exchange observed
11-05 00:11 60m -4 / - DJ0MAB - / - 2 Partial capture
11-05 00:06 60m -15 / - N4TZ - / -16 2 ✓ Closing fragment
11-05 00:02 60m -18 / -17 DD6ZV -16 / -3 5 ✓ Full exchange observed
11-04 23:58 60m -14 / -16 OH1LA -14 / -7 6 ✓ Full exchange observed
11-04 23:55 60m -10 / - G0ABI - / - 2 Partial capture
11-04 23:37 40m 0 / -11 IU8RFW -4 / -4 5 ✓ Full exchange observed
11-04 23:36 40m -4 / - UR4QWW - / 0 2 ✓ Closing fragment
11-04 23:34 40m -5 / - IZ1HJU - / -15 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m
UTC    dB Audio  Message
020100  -4  925  RN6HK DL7UDK -03
020115  +1 1926  DL7UDK RN6HK R-17
020115 +10 1134  DL7UDK 9A5E JN75
020130  +7  925  RN6HK DL7UDK RR73
020145 +14 1134  DL7UDK 9A5E JN75
020200  +0  925  9A5E DL7UDK +09
020215 +13 1134  DL7UDK 9A5E R-07
020230  +3  925  RN6HK DL7UDK RR73
020245 +13 1134  DL7UDK 9A5E R-07 (x2)
020400  +6  925  UA9XL/P DL7UDK JN48 (x5)
60m
UTC    dB Audio  Message
000930  +1 1253  CQ DL7UDK JN48 (x4)
001145  -7 1253  DJ0MAB DL7UDK JN48 (x2)
015100  +1  953  W4EBB DL7UDK JN48 (x5)
015400  +8  953  VE3GKA DL7UDK JN48 (x2)
015530  +4  953  VA3RTG DL7UDK JN48 (x2)
40m
UTC    dB Audio  Message
233800  -4 2909  DL7UDK IU8RFW R-11 (x3)
234115  -4 1040  CQ DL7UDK JN48                        a1 (x2)
013445 -11 1155  CU2DX DL7UDK JN48 (x2)
013545 -15 1155  9Y4C DL7UDK JN48 (x2)
013845  -8  955  VP2MCV DL7UDK JN48 (x2)
014615 -13  955  EX8ABR DL7UDK JN48 (x4)
160m
UTC    dB Audio  Message
010530  -7  727  ON8WR DL7UDK -04 (x2)
010630  -6  727  CQ DL7UDK JN48 (x5)
011015  -6  727  6W/IK2HKT DL7UDK JN48 (x4)
011215  +1  727  AA1K DL7UDK JN48 (x4)

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