DK2SW — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO43

Receiver-side FT8 activity involving DK2SW, decoded by SO8OO in southeastern Poland. 2,988 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 83 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-09-20.

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 2,988 FT8 messages attributed to DK2SW as the transmitting token by decoded message structure across 83 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (67%), followed by 20 m (25%) and 10 m (8%). The busiest six-hour window was 04:00-10:00 UTC, containing 40% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

2,988
Messages attributed
83
UTC dates decoded
488
Active 15-min windows
-9 dB
Estimated median S/N

Bands

40m · 2,014 20m · 741 10m · 233
First attributed message: 2026-06-10
Last attributed message: 2026-09-20 11:06 UTC

Observed FT8 message patterns

Attributed sample
2,988 messages
Active dates
83 UTC dates
Estimated median S/N
-9 dB
Estimated 10th-90th percentile
-16.6 to 0 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 410, moderate (-15 to -9 dB) 1,138, strong (≥ -8 dB) 1,440.

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 DK2SW 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 DK2SW

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
JO43 · 2,383 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
964 km (approx.)
Last such locator decoded
2026-09-20 11:05 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 UTCBandDK2SW S/NCounterpartCounterpart S/NMsgsCapture
09-20 11:06 40m -10 / - IU5HIU - / -5 2 ✓ Closing fragment
09-20 11:03 40m -13 / - DK0KG - / - 3 Partial capture
09-20 10:59 40m -12 / - DA0O - / +9 4 Partial capture
09-20 09:19 40m - / - DK8VD -12 / - 2 Partial capture
09-20 09:16 40m -9 / - DF3SP - / -8 3 ✓ Closing fragment
09-20 09:07 40m -14 / - DL4KK - / - 2 Partial capture
09-20 08:55 40m -19 / 0 DG3FFM -8 / - 2 ✓ Closing observed
09-20 08:51 40m -15 / - DL5KMR - / -9 7 ✓ Closing fragment
09-20 08:49 40m -15 / -11 DF0PDF +4 / - 5 ✓ Full exchange observed
09-19 21:03 40m +9 / - JA6GEN - / - 3 Partial capture
09-19 21:01 40m +8 / - JL1QOC - / -20 4 ✓ Closing fragment
09-18 14:15 40m -10 / - DL8LRZ -11 / +4 6 ✓ Full exchange observed
09-18 12:13 40m -16 / +6 DL1HUH -18 / +4 3 ✓ Full exchange observed
09-18 10:50 40m -17 / - DC7ML - / - 3 Partial capture
09-18 09:53 40m -7 / - DG0JBA -12 / - 3 ✓ Closing observed
09-18 09:47 40m -12 / +3 DL1LRI -1 / - 5 ✓ Full exchange observed
09-18 09:02 40m -4 / +4 OK3MB -12 / -4 4 ✓ Full exchange observed
09-18 09:00 40m -6 / - PD0PHA - / -9 3 ✓ Closing fragment
09-18 08:52 40m -14 / - PD1HD - / - 13 Partial capture
09-18 08:30 40m -8 / -12 DL5WP -5 / - 5 ✓ Closing observed
09-18 07:51 40m -8 / -1 DL2LRT +2 / - 5 ✓ Full exchange observed
09-18 06:37 40m -3 / - HC2GRC - / - 4 Partial capture
09-18 04:28 40m +4 / - YN9H - / - 28 Partial capture
09-17 13:50 40m -10 / - DF1PI - / - 2 Partial capture
09-17 13:43 40m -16 / - DL6FKR - / - 4 Partial capture
09-17 13:25 40m -14 / +1 DF0WH -9 / - 7 ✓ Full exchange observed
09-17 13:18 40m -13 / - DJ7XY - / +4 7 Partial capture
09-17 13:16 40m - / -14 DL4GBK -10 / - 2 ✓ Closing fragment
09-17 13:06 40m -17 / - DL7CHR - / - 3 Partial capture
09-17 13:04 40m -21 / - DF2TT - / - 2 Partial capture
09-17 13:02 40m -20 / 0 DD6UVO -4 / - 4 ✓ Closing observed
09-17 12:48 40m -21 / - DK4IO - / +7 2 ✓ Closing fragment
09-17 12:20 40m -10 / - DG5YHK -12 / +1 5 ✓ Closing observed
09-17 12:18 40m -8 / +4 9A3MRN -2 / -7 4 ✓ Full exchange observed
09-17 12:16 40m -12 / -14 E77WM -6 / -4 4 ✓ Full exchange observed
09-17 12:13 40m -17 / +3 DK2FM +3 / - 3 ✓ Closing observed
09-17 11:52 40m -9 / - DL4LUS - / -11 3 ✓ Closing fragment
09-17 11:38 40m -12 / - DL3YAV - / - 19 Partial capture
09-17 11:30 40m -9 / - DL2BCY -12 / - 3 ✓ Closing observed
09-17 11:18 40m -10 / - UB6OGX/3 - / +9 2 Partial capture
09-17 10:50 40m -12 / 0 DK7UY -6 / - 5 ✓ Full exchange observed
09-17 10:49 40m -9 / - DF4JY - / -14 3 ✓ Closing fragment
09-17 06:47 40m -7 / - VK7AC - / - 2 Partial capture
09-16 20:17 40m +4 / - BG7BVP - / - 4 Partial capture
09-16 20:15 40m -4 / - 9A5MP - / -8 3 ✓ Closing fragment
09-16 20:14 40m -6 / - HS0ZKB - / - 2 Partial capture
09-16 14:55 40m -10 / 0 DJ8EW +6 / - 7 ✓ Full exchange observed
09-16 14:49 40m -5 / - DL1WDS - / -3 3 ✓ Closing fragment
09-16 14:46 40m -7 / - DL5NON - / - 5 Partial capture
09-16 14:44 40m -12 / - UB4LDD - / - 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
091545 -12 2583  DD1OO DK2SW JO43
091645  -9 2583  DF3SP DK2SW JO43 (x3)
091900 -12 2583  DK2SW DK8VD JN39 (x2)
105930 -12 2583  DA0O DK2SW JO43 (x4)
110330 -13 2583  DK0KG DK2SW JO43 (x3)
110600  -8 2583  IU5HIU DK2SW -05 (x2)
20m 
UTC    dB Audio  Message
222915 -19 2199  KA0SOC DK2SW JO43
225915 -18 2475  KB1FJC DK2SW JO43
225930 -15 1774  DK2SW KB1FJC -13
225945 -19 2475  KB1FJC DK2SW R-01
230000 -17 1775  DK2SW KB1FJC RR73
230045 -16 2475  WB8YJF DK2SW R+03
230100 -10 2473  DK2SW WB8YJF RR73
230115 -13 2475  WB8YJF DK2SW 73
230300 -15 2475  NA4CN DK2SW JO43 (x7)
10m 
UTC    dB Audio  Message
204615  -2 2474  EA8AID DK2SW 73
131730 -12 2400  DK2SW ES2AJ RR73
064245  -2 2466  DN9KL DK2SW JO43 (x4)
065015 -14 2464  DN9HOQ DK2SW JO43 (x2)
065430 -11 2374  DK2SW DN9CHV JO31 (x3)
231700 -24 1724  WP4UAO DK2SW JO43
232030 -24 1724  WP4TZX DK2SW 73
203130 -10  769  DK2SW I8OHQ -05 (x2)

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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