DK8MM — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO53

Receiver-side FT8 activity involving DK8MM, decoded by SO8OO in southeastern Poland. 193 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 12 UTC dates in the available aggregate history. Observed between 2026-07-04 and 2026-09-03.

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 193 FT8 messages attributed to DK8MM as the transmitting token by decoded message structure across 12 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (48%), followed by 160 m (26%) and 10 m (11%). The busiest six-hour window was 17:00-23:00 UTC, containing 46% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (87%); the estimated median was +2 dB.

Overview

193
Messages attributed
12
UTC dates decoded
29
Active 15-min windows
+2 dB
Estimated median S/N

Bands

160m · 51 80m · 18 40m · 10 20m · 93 10m · 21
First attributed message: 2026-07-04
Last attributed message: 2026-09-03 22:04 UTC

Observed FT8 message patterns

Attributed sample
193 messages
Active dates
12 UTC dates
Estimated median S/N
+2 dB
Estimated 10th-90th percentile
-11 to +16 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 8, moderate (-15 to -9 dB) 18, strong (≥ -8 dB) 167.

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 DK8MM 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 DK8MM

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
JO53 · 118 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
841 km (approx.)
Last such locator decoded
2026-09-03 22:01 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 UTCBandDK8MM S/NCounterpartCounterpart S/NMsgsCapture
09-03 21:43 160m +1 / - RI1FJL - / -12 33 Partial capture
09-03 21:29 160m +14 / - EA6Y - / -12 6 ✓ Closing fragment
09-03 21:20 160m +2 / -13 EA1CQ -8 / -3 4 ✓ Full exchange observed
09-03 21:18 160m -3 / - VK6IR - / -24 3 ✓ Closing fragment
09-03 20:49 160m +18 / - TF4M - / -12 2 Partial capture
09-03 20:42 160m +14 / - TF4M - / -17 4 Partial capture
08-28 08:17 10m - / -5 DK8ZZ -7 / - 2 ✓ Closing fragment
08-28 08:11 10m - / -18 DJ3HW 0 / - 2 ✓ Closing fragment
08-28 08:00 10m -7 / -7 IK4JPP -12 / - 2 ✓ Closing observed
08-28 07:57 10m -7 / - IQ4JO - / - 2 ✓ Closing fragment
08-28 07:49 10m -5 / - JT1A - / - 8 Partial capture
08-27 20:19 80m +8 / - RI1FJL - / -16 4 Partial capture
08-27 20:15 80m +1 / - RI1FJL - / - 3 Partial capture
08-26 20:12 80m +3 / - RI1FJL - / - 10 Partial capture
08-26 15:23 20m -9 / - JH6KFY - / -4 4 ✓ Closing fragment
08-26 14:54 20m 0 / - BI1AFK - / -14 3 Partial capture
08-26 14:51 20m +1 / - BH1OHX - / -15 2 ✓ Closing fragment
08-26 14:50 20m +8 / - R4FDW - / -3 2 ✓ Closing fragment
08-26 11:45 20m +16 / - JH6KFY - / - 5 Partial capture
08-25 12:01 20m -7 / - JH6KFY - / -17 4 Partial capture
08-25 11:54 20m -9 / - JH6KFY - / - 4 Partial capture
08-21 17:42 20m +14 / - JH6KFY - / - 2 Partial capture
08-21 17:24 20m +6 / - JH6KFY - / - 2 Partial capture
08-20 18:16 20m -2 / - JH6KFY - / - 3 Partial capture
08-20 18:08 20m -4 / - JH6KFY - / - 6 Partial capture
08-20 15:06 20m - / +1 R1QD -13 / - 3 Partial capture
08-20 15:01 20m +16 / - JH6KFY - / -18 11 Partial capture
08-20 14:54 20m +14 / - JH6KFY - / -15 9 Partial capture
08-20 14:49 20m +2 / - JH6KFY - / -17 2 Partial capture
08-20 14:32 20m +12 / - JH6KFY - / -26 16 Partial capture
08-06 21:01 40m +1 / - LA6OP - / - 6 Partial capture
07-25 08:28 10m +4 / - RK3AW - / -6 2 ✓ Closing fragment
07-25 08:27 10m +6 / - DL3MIB - / -13 2 ✓ Closing fragment
07-25 08:26 10m +5 / - BO0M - / -13 2 ✓ Closing fragment
07-24 15:56 20m +2 / - BO0M - / - 2 Partial capture
07-13 16:00 40m -16 / - RI1PC - / -15 4 Partial capture
07-04 07:22 20m -15 / - RI1ZR - / - 10 Partial capture
07-04 07:17 20m -15 / - RI1ZR - / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

160m 
UTC    dB Audio  Message
215345  +1  612  RI1FJL DK8MM JO53 (x15)
10m 
UTC    dB Audio  Message
075430  -7  416  JT1A DK8MM JO53
075530  -7  416  BX4AP DK8MM -16
075700  -7  415  IQ4JO DK8MM RR73 (x2)
075745  -5  415  DK8MM LZ2VQ KN23
075900  -8  415  CQ DK8MM JO53
080000 -10  415  EA3AKY DK8MM RR73
080045 -12  579  DK8MM IK4JPP R-07
080100  -7  415  IK4JPP DK8MM RR73
080130  -8  415  F4BJN DK8MM +00
081145  -2  702  DK8MM DJ3HW R-18 (x2)
081715  -6 2201  DK8MM DK8ZZ R-05 (x2)
083600 -10  414  DK8MM DK7ZT -07
80m 
UTC    dB Audio  Message
201315  +0  329  RI1FJL DK8MM JO53 (x15)
20m 
UTC    dB Audio  Message
144015 -12 2142  BD6IIC DK8MM R-11
144800  -7 2350  DK8MM R4FDW +05
145015  +7 2140  R4FDW DK8MM R-03 (x2)
145115  +0 2140  BH1OHX DK8MM -15 (x2)
145215  -5 2140  CQ DK8MM JO53                         a1
145345  +1 2140  YO5PHL DK8MM RR73
145415  +3 2140  BI1AFK DK8MM -14 (x3)
152315  -8  411  JH6KFY DK8MM JO53 (x4)
40m 
UTC    dB Audio  Message
160045 -14 1258  RI1PC DK8MM JO53 (x4)
210115  +3  702  LA6OP DK8MM JO53 (x6)

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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