DH1DAC — 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: JO31

Receiver-side FT8 activity involving DH1DAC, decoded by SO8OO in southeastern Poland. 1,000 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 23 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-10-21.

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 1,000 FT8 messages attributed to DH1DAC as the transmitting token by decoded message structure across 23 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (82%), followed by 40 m (14%) and 20 m (3%). Most decodes (74%) fell within the six-hour window 04:00-10:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

1,000
Messages attributed
23
UTC dates decoded
124
Active 15-min windows
-9 dB
Estimated median S/N

Bands

80m · 824 60m · 7 40m · 136 20m · 33
First attributed message: 2026-06-12
Last attributed message: 2026-10-21 19:17 UTC

Observed FT8 message patterns

Attributed sample
1,000 messages
Active dates
23 UTC dates
Estimated median S/N
-9 dB
Estimated 10th-90th percentile
-18 to +1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 188, moderate (-15 to -9 dB) 322, strong (≥ -8 dB) 490.

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 DH1DAC 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 DH1DAC

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
JO31 · 659 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,054 km (approx.)
Last such locator decoded
2026-10-21 19:17 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 UTCBandDH1DAC S/NCounterpartCounterpart S/NMsgsCapture
10-21 19:22 80m - / -6 RA2FU -6 / - 2 Partial capture
10-21 19:18 80m - / -1 DL26BBQ +16 / - 2 ✓ Closing fragment
10-21 17:05 80m -6 / +3 IU2THY +1 / +2 4 ✓ Full exchange observed
10-21 16:58 80m - / - RK6OQ -11 / - 2 Partial capture
10-21 16:50 80m - / -3 DL6EL +6 / - 3 ✓ Closing fragment
10-21 16:46 80m - / - UR4LG -6 / - 2 Partial capture
10-21 16:45 80m -14 / +2 DA6IT -24 / - 4 ✓ Full exchange observed
10-21 16:22 80m -12 / - DA6HAL - / 0 4 ✓ Closing fragment
10-21 16:11 80m -10 / - DL0PS +4 / - 7 ✓ Full exchange observed
10-21 05:57 80m -8 / +3 DA125RH -2 / +8 3 Partial capture
10-21 05:26 40m +2 / - HI3CH - / - 9 Partial capture
10-19 05:27 80m -3 / - DO1BOC - / -6 6 ✓ Closing fragment
10-19 04:46 80m +3 / - W9HT/VP9 - / - 5 Partial capture
10-14 06:55 60m -12 / - OH0KCE - / +6 3 ✓ Closing fragment
10-14 06:50 60m -18 / - OH0KCE - / - 4 Partial capture
10-14 05:50 80m -12 / - DO4YNH - / - 2 Partial capture
10-14 05:48 80m -3 / - M9DNC - / -9 3 ✓ Closing fragment
10-14 04:48 80m +3 / -17 PJ2/W4IPC -9 / -14 42 Partial capture
10-12 13:56 40m -13 / - RA0QK/8 - / - 3 Partial capture
10-12 09:35 40m -18 / - DD0IPA -18 / - 3 ✓ Closing observed
10-12 08:42 40m -18 / - Z62NS - / - 2 Partial capture
10-12 08:40 40m - / 0 DK0NPB -10 / - 2 ✓ Closing fragment
10-12 08:37 40m -8 / -6 DL7DF -12 / +5 5 ✓ Full exchange observed
10-12 05:35 80m - / - DL6YEK -6 / - 7 Partial capture
10-12 05:28 80m -12 / - DL6YEK - / - 9 Partial capture
10-12 05:19 80m -7 / -16 II5GG -4 / -6 5 Partial capture
10-12 05:14 80m -5 / -7 EA8DO -2 / - 3 ✓ Closing observed
10-12 05:03 80m +2 / -5 T77RN -10 / -11 7 ✓ Full exchange observed
10-12 04:59 80m +8 / -15 DL5JAG +12 / - 4 ✓ Closing observed
10-12 04:47 80m +1 / -11 9H1ES -10 / -7 10 ✓ Full exchange observed
10-11 07:22 80m -15 / - DL1HDL - / +8 2 ✓ Closing fragment
10-11 07:19 80m -17 / -2 DL0NS -14 / - 5 ✓ Closing observed
10-11 07:13 80m -8 / -6 DM8ITZ -6 / -12 4 ✓ Full exchange observed
10-11 07:11 80m -18 / -7 DM8ITZ 0 / - 3 Partial capture
10-11 07:06 80m -13 / - HA/SP7TBS - / - 7 Partial capture
10-11 06:51 80m -16 / -25 DB7KK -7 / -5 8 Partial capture
10-11 06:48 80m -11 / - DM8ITZ - / - 5 Partial capture
10-11 06:46 80m -10 / -13 EA6Y -18 / - 4 ✓ Closing observed
10-11 06:44 80m -16 / +1 DK6WH -3 / +5 5 ✓ Full exchange observed
10-11 06:37 80m -14 / - DL3IKE - / - 2 ✓ Closing fragment
10-11 06:19 80m -7 / -8 ON8LX -17 / - 3 Partial capture
10-11 06:17 80m -10 / - PC2F - / -13 2 ✓ Closing fragment
10-11 06:15 80m -5 / -2 F1IQH -19 / -7 3 ✓ Full exchange observed
10-07 07:22 40m - / -12 DA125RH -4 / - 2 Partial capture
10-07 07:21 40m -11 / - HB9SPACE - / -6 16 Partial capture
10-07 06:26 80m -10 / - DG4SCG - / 0 8 Partial capture
10-07 06:24 80m -12 / - DH3DX +1 / - 5 ✓ Closing observed
10-07 06:22 80m -10 / +8 DO2MOG -22 / -1 5 ✓ Full exchange observed
10-07 05:09 80m -10 / - C31KC - / - 8 Partial capture
10-07 05:01 80m -5 / - N0BUZ - / - 7 Partial capture

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
170215 -12 2127  CQ DH1DAC JO31 (x2)
170530  -4 2716  DH1DAC IU2THY JN45
170545  -3 2127  IU2THY DH1DAC +02
170600  +6 2716  DH1DAC IU2THY R+03
170615  -9 2128  IU2THY DH1DAC RR73
170645  -9 2127  CQ DH1DAC JO31 (x4)
191745  +5 2313  RD9M/3 DH1DAC JO31
191800 +13 2450  DH1DAC DL26BBQ -01 (x2)
192200  +0 2386  DH1DAC RA2FU -06 (x2)
40m 
UTC    dB Audio  Message
094445 -11  496  CQ DH1DAC JO31
135600 -12 2366  RA0QK/8 DH1DAC JO31 (x3)
052645  +1 2646  HI3CH DH1DAC JO31 (x4)
052830 -16 1469  DH1DAC UA1ACO RR73
052845  +2 2646  HI3CH DH1DAC JO31 (x5)
080745  -4 2090  DH1DAC YU65AEC -02
60m 
UTC    dB Audio  Message
065030 -16 2174  OH0KCE DH1DAC JO31 (x7)
20m 
UTC    dB Audio  Message
075345 -21 2091  <...> DH1DAC JO31 (x2)
075445 -19 2091  <HF85MK> DH1DAC JO31
075615 -19 2091  <...> DH1DAC JO31 (x5)
075915 -11 2091  DL5DQZ DH1DAC +08 (x2)
160745 -13 2307  RI1FJL DH1DAC JO31 (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

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee