DK4TM — 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 DK4TM, decoded by SO8OO in southeastern Poland. 243 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 23 UTC dates in the available aggregate history. Observed between 2026-09-09 and 2026-11-03.

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 243 FT8 messages attributed to DK4TM as the transmitting token by decoded message structure across 23 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (93%), followed by 80 m (7%). The busiest six-hour window was 18:00-00:00 UTC, containing 44% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (67%); the estimated median was -6 dB.

Overview

243
Messages attributed
23
UTC dates decoded
56
Active 15-min windows
-6 dB
Estimated median S/N

Bands

80m · 18 40m · 225
First attributed message: 2026-09-09
Last attributed message: 2026-11-03 22:49 UTC

Observed FT8 message patterns

Attributed sample
243 messages
Active dates
23 UTC dates
Estimated median S/N
-6 dB
Estimated 10th-90th percentile
-15 to +4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 22, moderate (-15 to -9 dB) 59, strong (≥ -8 dB) 162.

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 DK4TM 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 DK4TM

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 · 114 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
911 km (approx.)
Last such locator decoded
2026-10-30 20:12 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 UTCBandDK4TM S/NCounterpartCounterpart S/NMsgsCapture
11-03 22:49 40m - / - UA4FKT +1 / - 3 Partial capture
10-30 20:09 40m -5 / - LA1PHA - / -2 3 ✓ Closing fragment
10-30 09:31 40m -11 / - DA0M - / -7 2 ✓ Closing fragment
10-30 09:30 40m -10 / - DL6BAD - / -8 2 ✓ Closing fragment
10-30 09:29 40m -6 / - OS4K - / -13 2 ✓ Closing fragment
10-30 09:29 40m - / - UA4FKT -17 / - 3 Partial capture
10-30 09:28 40m -10 / - DL1AG - / -6 2 ✓ Closing fragment
10-29 16:57 40m +4 / - ZL1VAH - / -20 2 Partial capture
10-29 07:06 40m -2 / - OH6FSO - / -15 3 ✓ Closing fragment
10-29 07:04 40m 0 / -6 DD1OO +6 / -5 5 ✓ Full exchange observed
10-29 07:02 40m -1 / - IQ0AK - / -12 3 ✓ Closing fragment
10-26 23:21 80m - / - DA6DNA -5 / - 5 Partial capture
10-26 23:18 80m -11 / - DK8HC -2 / -11 3 ✓ Closing observed
10-26 23:18 80m -11 / -17 DO9BAU +12 / -4 7 ✓ Full exchange observed
10-26 23:17 80m -12 / -9 EI4JFB -4 / -2 5 ✓ Full exchange observed
10-26 23:12 80m - / -9 DL7ACA +17 / - 4 ✓ Closing fragment
10-26 23:11 80m -13 / -7 M7CWF -14 / - 3 ✓ Closing observed
10-26 23:08 80m -12 / - DO5HOK - / -4 3 ✓ Closing fragment
10-26 21:46 40m - / - UR9QQ -14 / - 2 ✓ Closing fragment
10-26 10:49 40m -4 / -8 OE6TNO +2 / -15 8 ✓ Full exchange observed
10-26 10:46 40m -7 / - G8PY - / -16 3 Partial capture
10-26 10:43 40m - / -7 YO2IS -2 / - 4 ✓ Closing fragment
10-26 10:41 40m -6 / - HB9ZHK - / -5 3 ✓ Closing fragment
10-26 10:39 40m -6 / -5 OE8RPK -20 / -10 6 ✓ Full exchange observed
10-26 10:35 40m -7 / - PD1DBL - / +2 5 Partial capture
10-26 10:34 40m -10 / - F1POK - / -5 2 ✓ Closing fragment
10-26 10:34 40m - / - OE8RPK -18 / - 3 Partial capture
10-26 10:33 40m - / -1 IK4JPP -6 / - 2 ✓ Closing fragment
10-26 10:31 40m -5 / -1 DL9KM -5 / -5 7 ✓ Full exchange observed
10-26 10:30 40m -7 / - HB9MZI - / -12 2 ✓ Closing fragment
10-26 10:30 40m - / - OE8RPK -21 / - 2 Partial capture
10-26 10:27 40m -6 / +9 DL7ACA +3 / +1 8 ✓ Full exchange observed
10-26 10:25 40m -5 / - DA1ST -6 / -2 3 ✓ Full exchange observed
10-22 12:45 40m -12 / +8 PE9JAN -15 / 0 7 ✓ Full exchange observed
10-20 21:14 40m -20 / - ER1CW - / - 2 ✓ Closing fragment
10-20 07:35 40m -4 / - TF5B - / - 3 Partial capture
10-20 07:27 40m -2 / - SM7DUZ - / 0 6 ✓ Closing fragment
10-20 07:24 40m +4 / - E74K - / - 2 Partial capture
10-16 22:19 40m -10 / - YD1EQN - / - 4 Partial capture
10-16 21:15 40m -15 / - DS5USH - / -18 4 Partial capture
10-13 20:04 40m -11 / - SP4BB - / - 2 Partial capture
10-13 20:01 40m -3 / - OH3XR - / -6 3 ✓ Closing fragment
10-13 19:59 40m -8 / - OH6WQ -4 / -7 3 ✓ Closing observed
10-13 19:52 40m -5 / +5 GU4WRP +1 / +2 5 ✓ Full exchange observed
10-13 18:24 40m +4 / - OK1AY - / - 3 Partial capture
10-11 23:51 80m -23 / - IZ8XXE - / - 2 Partial capture
10-11 23:47 80m -14 / -15 SM7TZK -7 / -9 3 ✓ Full exchange observed
10-11 23:44 80m -17 / -20 LY2HM -2 / -3 8 Partial capture
10-11 11:01 40m -6 / -13 UX7QV -1 / - 3 ✓ Closing observed
10-11 10:41 40m -5 / - SP6TT - / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
093115 -10 2405  DL6BAD DK4TM RR73
093130 -18 2405  DK4TM UA4FKT LO23
093145 -10 2405  DA0M DK4TM -07 (x2)
195045 -11 2665  JH1FNU DK4TM JO40
195400 -13  681  OH3SW DK4TM R-01
200100  -5 2877  CQ DK4TM JO40
200900  -2  363  LA1PHA DK4TM JO40 (x3)
201245  -5  378  6K5XZE DK4TM JO40
224930 -12  595  WA4CAS DK4TM 73
224945  -2  596  DK4TM UA4FKT LO23 (x3)
80m 
UTC    dB Audio  Message
231845 -11  699  DK8HC DK4TM -11
231900  +5 2502  DK4TM DO9BAU JO62 (x2)
231930  +2 2009  DK4TM DK8HC 73
231945 -17  700  DO9BAU DK4TM -04
232000 +12 2502  DK4TM DO9BAU R-17
232015  -5  699  DO9BAU DK4TM RR73
232030 +16 2502  DK4TM DO9BAU 73
232045 -15  699  CQ DK4TM JO40 (x2)
232130  -5 2343  DK4TM DA6DNA JO62 (x5)

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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