DK8CX — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO61

Receiver-side FT8 activity involving DK8CX, decoded by SO8OO in southeastern Poland. 1,605 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 98 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-15.

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 1,605 FT8 messages attributed to DK8CX as the transmitting token by decoded message structure across 98 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (80%), followed by 40 m (10%) and 20 m (7%). Most decodes (84%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (93%); the estimated median was +3 dB.

Overview

1,605
Messages attributed
98
UTC dates decoded
229
Active 15-min windows
+3 dB
Estimated median S/N

Bands

160m · 61 80m · 1,280 40m · 156 20m · 108
First attributed message: 2026-06-07
Last attributed message: 2026-10-15 02:02 UTC

Observed FT8 message patterns

Attributed sample
1,605 messages
Active dates
98 UTC dates
Estimated median S/N
+3 dB
Estimated 10th-90th percentile
-7 to +12 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 25, moderate (-15 to -9 dB) 91, strong (≥ -8 dB) 1,489.

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 DK8CX 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 DK8CX

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
JO61 · 755 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
642 km (approx.)
Last such locator decoded
2026-10-15 01:59 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 UTCBandDK8CX S/NCounterpartCounterpart S/NMsgsCapture
10-15 02:05 40m - / -12 JY5IB -16 / - 2 ✓ Closing fragment
10-15 02:02 80m +8 / - UA3IDQ - / +3 2 ✓ Closing fragment
10-15 01:59 80m +4 / -13 R9CB -2 / -1 7 ✓ Full exchange observed
10-15 01:02 80m +5 / - AP2HA - / - 5 Partial capture
10-15 01:00 80m +10 / -8 Z61DX -8 / +7 5 ✓ Full exchange observed
10-14 20:26 40m - / -16 TA2VUZ -5 / - 2 ✓ Closing fragment
10-14 20:17 80m +7 / - RA6FYL - / - 3 Partial capture
10-14 20:15 80m -4 / - UN3P - / - 2 Partial capture
10-13 20:25 80m +8 / - GM0MST - / -4 4 ✓ Closing fragment
10-13 20:24 80m +8 / - RA0SCA - / - 2 Partial capture
10-13 20:05 160m -3 / -12 DH9DX -18 / -17 9 ✓ Full exchange observed
10-13 20:01 160m +4 / -3 HA5AO +8 / +3 4 ✓ Full exchange observed
10-12 20:35 80m +1 / -5 SP1RKT +2 / +9 6 ✓ Full exchange observed
10-12 20:34 80m -1 / - DJ0JG - / -12 3 ✓ Closing fragment
10-12 20:33 80m -7 / +8 DA6HU/P -12 / -7 3 ✓ Full exchange observed
10-12 20:30 80m +3 / - OZ2JFS - / 0 3 ✓ Closing fragment
10-12 20:26 80m +2 / -4 DO9BLX +12 / - 4 ✓ Full exchange observed
10-12 20:24 80m -1 / -7 OK1GU +11 / +8 6 ✓ Full exchange observed
10-12 20:22 80m - / -13 DO5HOK -2 / - 2 Partial capture
10-11 20:21 160m -1 / - E70SZ - / - 5 ✓ Closing fragment
10-11 20:19 160m -2 / -13 IU7QKP -8 / -11 4 ✓ Full exchange observed
10-11 20:15 80m 0 / - IZ8VYF - / - 2 Partial capture
10-11 20:15 80m +6 / +4 OK1XOE +6 / +5 6 ✓ Full exchange observed
10-11 20:12 80m +8 / 0 ON7VZ -7 / +8 5 ✓ Full exchange observed
10-11 20:10 80m -1 / -12 IK4UOF +2 / -3 5 ✓ Full exchange observed
10-11 20:05 80m +9 / -6 DO1TLP +3 / +5 6 ✓ Full exchange observed
10-11 06:18 80m +6 / - DO2AY - / +2 3 ✓ Closing fragment
10-11 06:14 40m -10 / -10 F4LRA -12 / -14 4 ✓ Full exchange observed
10-11 04:39 80m -1 / - YO3AI - / 0 3 ✓ Closing fragment
10-11 04:36 80m -1 / 0 LY5A +8 / - 5 ✓ Full exchange observed
10-11 04:35 80m +6 / - DO2NTC - / 0 3 ✓ Closing fragment
10-11 04:34 80m +9 / -6 YO4NF 0 / - 4 ✓ Full exchange observed
10-11 04:33 80m +2 / - F4HQL -7 / +4 3 ✓ Closing observed
10-10 20:48 160m -2 / - OE3EAR -7 / +1 4 ✓ Closing observed
10-10 20:46 160m -10 / -11 HF40BLP +10 / +2 3 Partial capture
10-10 20:39 160m 0 / -2 SM1NJC +2 / -7 7 ✓ Full exchange observed
10-10 20:30 160m -6 / -7 EO210WLP -2 / -6 3 Partial capture
10-10 20:22 160m -4 / - EA3AKY -13 / -9 5 ✓ Closing observed
10-10 20:20 160m -14 / - UA4FET - / - 2 Partial capture
10-10 20:17 160m -2 / +3 DC0GL +12 / +9 6 ✓ Full exchange observed
10-10 20:13 160m -3 / 0 DH9YAX -2 / -4 5 ✓ Full exchange observed
10-10 20:10 160m -4 / - DL4FBN -9 / -1 2 Partial capture
10-10 20:09 160m 0 / -11 SM0EUI -24 / - 2 Partial capture
10-10 20:07 160m -8 / - DM6DD - / - 3 ✓ Closing fragment
10-10 20:03 160m 0 / -21 IK4IDY -15 / -10 5 ✓ Full exchange observed
10-10 20:02 160m -4 / -6 LY8O +2 / - 5 ✓ Closing observed
10-10 20:00 160m -1 / -7 DL4BCY -13 / -7 5 ✓ Full exchange observed
10-10 19:59 160m +1 / -14 EW2ZC +15 / +2 5 ✓ Full exchange observed
10-09 20:15 40m -7 / - IU7VOL - / -4 3 ✓ Closing fragment
10-09 20:04 80m -9 / - DG4MDO - / -20 3 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
065545 -12 1718  DK8CX DF3VX +03
065600 -11 1718  DF3VX DK8CX R-06 (x2)
201530  -4 2603  IU7VOL DK8CX JO61 (x3)
201815 -12 1665  DK8CX M0IEP R-09
061445 -12 2241  DK8CX F4LRA -10
061500 -11 2242  F4LRA DK8CX R-14
061515 -13 2241  DK8CX F4LRA RR73
061530  -9 2242  F4LRA DK8CX 73
202645  -4 1604  DK8CX TA2VUZ -16 (x2)
020515 -17 1246  DK8CX JY5IB -12 (x2)
80m 
UTC    dB Audio  Message
010115 +14 1767  Z61DX DK8CX 73
010200  +4 1523  AP2HA DK8CX JO61 (x5)
015930  +6 1355  R9CB DK8CX JO61
015945  -2 1355  DK8CX R9CB -13
020000  +3 1355  R9CB DK8CX R-01
020015  -1 1355  DK8CX R9CB RR73
020030  +9 1355  R9CB DK8CX 73
020045  -2 1355  DK8CX R9CB 73
020100  -1 1355  R9CB DK8CX 73
020215  +9 1965  UA3IDQ DK8CX R+03 (x2)
160m 
UTC    dB Audio  Message
202300  -4 1375  E70SZ DK8CX JO61 (x2)
200115  +6 1244  DK8CX HA5AO -03
200130  +3 1244  HA5AO DK8CX R+03
200145  +9 1244  DK8CX HA5AO RR73
200200  +5 1244  HA5AO DK8CX 73
200515  -8 1442  DH9DX DK8CX JO61
200530 -18 1442  DK8CX DH9DX -12
200545  -5 1442  DH9DX DK8CX JO61
200600 -18 1442  DK8CX DH9DX -08
200615  -2 1442  DH9DX DK8CX R-17
200630 -19 1442  DK8CX DH9DX RR73
200645  +5 1442  DH9DX DK8CX R-17
200700 -18 1442  DK8CX DH9DX RR73
200715  -4 1442  DH9DX DK8CX 73
10m 
UTC    dB Audio  Message
124800  -1 1124  DK8CX DL3MIB 73
125430 -14 1376  DK8CX DC8SQ +08
125845 -24 1708  DK8CX DO3VS -12 (x3)
130215  -5  834  DK8CX DL8NW +21 (x2)
133600 -17 1001  DK8CX F6BNX JN33 (x3)
124700  -7 2735  DK8CX SV2AEL -01 (x2)
130700 -10  600  DK8CX DN9CHV -12
133830 -13 1197  DK8CX CR7BUJ -03 (x2)
20m 
UTC    dB Audio  Message
202445  +9  632  8Z1IT DK8CX R-04
202500  -3  632  DK8CX 8Z1IT RR73
202515  +9  633  8Z1IT DK8CX 73
202600  -3 1697  F4MNH DK8CX JO61
202615  -6 1698  DK8CX F4MNH +00
202630  +4 1697  F4MNH DK8CX R-10
202645  -1 1698  DK8CX F4MNH RR73
202700  -9 1697  F4MNH DK8CX 73
202745  +7 1318  YO6PNM DK8CX JO61 (x4)
203030 +11 2316  KQ4IJI DK8CX JO61 (x2)
203345 +13 2671  K0BLT DK8CX JO61

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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