DK4IO — 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: JN49

Receiver-side FT8 activity involving DK4IO, decoded by SO8OO in southeastern Poland. 122 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 11 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-11-04.

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 122 FT8 messages attributed to DK4IO as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (39%), followed by 20 m (34%) and 80 m (24%). Most decodes (79%) fell within the six-hour window 11:00-17:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

122
Messages attributed
11
UTC dates decoded
23
Active 15-min windows
-8 dB
Estimated median S/N

Bands

80m · 29 40m · 47 20m · 41 10m · 5
First attributed message: 2026-06-09
Last attributed message: 2026-11-04 17:41 UTC

Observed FT8 message patterns

Attributed sample
122 messages
Active dates
11 UTC dates
Estimated median S/N
-8 dB
Estimated 10th-90th percentile
-17 to +5 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 18, moderate (-15 to -9 dB) 42, strong (≥ -8 dB) 62.

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 DK4IO 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 DK4IO

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 · 66 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
920 km (approx.)
Last such locator decoded
2026-11-04 17:36 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 UTCBandDK4IO S/NCounterpartCounterpart S/NMsgsCapture
11-04 17:40 80m -10 / -6 LA1KUA 0 / -25 7 ✓ Full exchange observed
11-04 17:36 80m -10 / - DK1HSI - / - 2 Partial capture
11-04 17:28 80m -11 / - DO6KGS - / -10 4 ✓ Closing fragment
11-02 17:14 40m -13 / - R2FBW - / -20 3 ✓ Closing fragment
11-02 17:10 40m -14 / - R4ADD - / -17 2 ✓ Closing fragment
11-02 17:05 40m -15 / - R6DZR - / - 2 ✓ Closing fragment
11-02 17:00 80m -9 / - RC9WC - / - 2 Partial capture
11-02 16:54 80m -3 / - RZ0SW - / - 3 Partial capture
11-02 16:53 80m -6 / -15 UB3YCK -18 / -13 5 ✓ Full exchange observed
11-02 16:51 80m -8 / -7 DL9GCR -12 / - 2 ✓ Closing observed
11-02 16:49 80m -9 / - DO9FR - / -21 3 ✓ Closing fragment
11-02 16:48 80m -8 / - RZ0SW - / - 3 Partial capture
11-02 16:43 80m -18 / - 2E0FHM -16 / -4 3 ✓ Closing observed
10-26 12:29 40m -8 / -3 9A6SJU -5 / -15 4 ✓ Full exchange observed
10-19 11:05 40m -16 / - DJ5PT - / +5 2 ✓ Closing fragment
10-19 11:03 40m -13 / - F4BJN - / -15 2 ✓ Closing fragment
10-19 11:01 40m -14 / - M8FQT - / -11 3 ✓ Closing fragment
10-19 10:59 40m -20 / - G4CPA - / -9 3 ✓ Closing fragment
09-17 12:48 40m - / +7 DK2SW -21 / - 2 ✓ Closing fragment
08-31 16:38 40m -4 / - M6XZD - / -10 3 ✓ Closing fragment
08-31 16:35 40m -14 / - <...> - / -12 2 Partial capture
08-31 16:23 20m +2 / - VU2KPH - / - 2 Partial capture
08-28 13:42 20m +4 / - RI1FJL - / - 11 Partial capture
08-28 11:59 20m 0 / - RI1FJL - / - 4 Partial capture
08-28 11:55 20m 0 / - RI1FJL - / - 2 Partial capture
08-28 11:43 20m +6 / - RI1FJL - / - 13 Partial capture
08-28 11:41 20m +6 / - SA3SHN - / +6 4 ✓ Closing fragment
08-28 11:40 20m +4 / - RA0AG - / - 2 Partial capture
08-26 15:26 40m -13 / - YU2MS - / -12 3 Partial capture
08-26 15:22 40m -17 / -1 HA3AN -6 / +6 5 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
170045 -10 1144  RC9WC DK4IO JN49
170145 -13  957  UA4CCH DK4IO JN49
172845  -9  893  DO6KGS DK4IO JN49 (x4)
173600 -13  945  DK1HSI DK4IO JN49 (x2)
174015  +0 2317  DK4IO LA1KUA -06
174030 -10 2318  LA1KUA DK4IO R-25
174045  -1 2317  DK4IO LA1KUA RR73
174100  -8 2318  LA1KUA DK4IO R-25
174115  +2 2317  DK4IO LA1KUA RR73
174130 -11 2318  LA1KUA DK4IO 73
174145  -1 2317  DK4IO LA1KUA RR73
160m 
UTC    dB Audio  Message
171215 -23 1650  DK4IO DK80NDS -20
40m 
UTC    dB Audio  Message
110530 -15 1265  DJ5PT DK4IO RR73
122530 -16 1232  DL9SFE DK4IO RR73
122745 -22 1510  OZ1BSM DK4IO JN49
122945  -8  359  9A6SJU DK4IO JN49
123000  -6  360  DK4IO 9A6SJU -03
123015  -7  359  9A6SJU DK4IO R-15
123130  -4  362  DK4IO 9A6SJU 73
170515 -19 1238  R6DZR DK4IO JN49 (x2)
171015 -12  849  R4ADD DK4IO R-17 (x2)
171215  -9  849  RA4HG DK4IO 73
171430 -12 1631  R2FBW DK4IO JN49 (x3)
20m 
UTC    dB Audio  Message
134315  +1  344  RI1FJL DK4IO JN49 (x10)
161945 -10 2345  BG7BMG DK4IO 73
162315  +2 1673  VU2KPH DK4IO JN49 (x2)
162900  +1 1688  BU2FW DK4IO JN49
163145  -2  988  BG5JGG DK4IO JN49

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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