DL4DBL — 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 DL4DBL, decoded by SO8OO in southeastern Poland. 1,837 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, across 28 UTC dates in the available aggregate history. Observed between 2026-06-22 and 2026-11-03.

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 1,837 FT8 messages attributed to DL4DBL as the transmitting token by decoded message structure across 28 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (27%), followed by 80 m (22%) and 20 m (20%). Most decodes (63%) 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 (83%); the estimated median was +1 dB.

Overview

1,837
Messages attributed
28
UTC dates decoded
162
Active 15-min windows
+1 dB
Estimated median S/N

Bands

First attributed message: 2026-06-22
Last attributed message: 2026-11-03 20:44 UTC

Observed FT8 message patterns

Attributed sample
1,837 messages
Active dates
28 UTC dates
Estimated median S/N
+1 dB
Estimated 10th-90th percentile
-11 to +11 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 57, moderate (-15 to -9 dB) 257, strong (≥ -8 dB) 1,523.

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.

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 DL4DBL

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 · 1,012 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,054 km (approx.)
Last such locator decoded
2026-11-03 20:34 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 UTCBandDL4DBL S/NCounterpartCounterpart S/NMsgsCapture
11-03 20:43 160m -12 / - 5B4AMX - / -8 2 ✓ Closing fragment
11-03 20:41 160m -8 / -8 OH0Z +12 / +4 3 ✓ Full exchange observed
11-03 20:27 160m 0 / -12 I8OHQ -13 / -15 3 ✓ Full exchange observed
11-03 20:26 160m -1 / - DL6NAC - / -10 2 ✓ Closing fragment
11-03 20:21 160m -1 / -14 DH3KR -22 / - 4 ✓ Closing observed
11-03 20:20 160m -6 / -19 SQ9BC +10 / -13 7 ✓ Full exchange observed
11-03 20:20 160m -4 / -9 SQ9PBV +2 / -18 4 ✓ Full exchange observed
11-03 19:46 80m +2 / - TF1EIN - / - 2 Partial capture
11-03 19:45 80m +4 / - LZ2ZD - / - 2 Partial capture
11-03 19:41 80m +1 / -16 YO3FWL +5 / -8 5 ✓ Full exchange observed
11-03 19:40 80m +6 / - DA6DN - / -7 2 ✓ Closing fragment
11-03 19:38 80m +2 / +4 DF4NR +5 / +7 5 ✓ Full exchange observed
11-03 19:32 60m -6 / -13 DJ0MAB -9 / - 8 ✓ Closing observed
11-03 19:30 60m -4 / - GB1RBL - / -7 2 ✓ Closing fragment
11-03 19:27 60m -2 / -13 EA3NE -3 / 0 7 ✓ Full exchange observed
11-03 19:24 60m +3 / -17 DJ0MAB +3 / -20 8 ✓ Full exchange observed
11-03 19:23 60m +1 / - LZ1GC -5 / +5 2 Partial capture
11-03 19:23 60m -2 / -6 OH6FSG -12 / -5 5 ✓ Full exchange observed
11-03 19:04 80m +2 / - DB2QM - / -17 3 ✓ Closing fragment
11-03 19:02 80m +2 / - LZ7MM - / -11 2 Partial capture
11-03 19:01 80m +2 / +2 SP1EG +6 / +6 5 ✓ Full exchange observed
11-03 18:58 40m - / - PA3WZA -10 / - 2 Partial capture
11-03 18:54 40m +5 / -10 IU8RFW -2 / -15 5 ✓ Full exchange observed
11-03 18:21 40m -4 / - UT/WE9G - / -20 3 Partial capture
11-03 18:19 80m +2 / - PI40EUDXF - / -15 2 Partial capture
11-03 18:17 80m +7 / - DO9FR -12 / -6 5 ✓ Full exchange observed
11-03 18:06 160m -12 / - F5TYY - / -13 2 ✓ Closing fragment
11-03 18:02 160m -14 / -4 OE2CAL -14 / +4 4 ✓ Full exchange observed
11-02 20:10 160m -2 / -10 SP5IDR +14 / -5 5 ✓ Full exchange observed
11-02 20:07 160m -4 / - UN0GY - / - 2 Partial capture
11-02 20:05 160m -4 / -5 IT9VCE -8 / -2 5 ✓ Full exchange observed
11-02 19:40 40m - / - EA8CDG -6 / - 2 ✓ Closing fragment
11-02 18:49 40m +12 / - R3ICU - / -17 2 Partial capture
11-02 18:48 40m +13 / - SQ8ECJ - / -5 2 ✓ Closing fragment
11-02 18:45 40m +9 / - F4NMK - / -21 3 ✓ Closing fragment
11-02 18:44 40m +11 / - D2UY - / -10 3 ✓ Closing fragment
11-02 18:41 40m +12 / - SM2EKA - / -17 2 ✓ Closing fragment
11-02 18:38 40m +12 / - IZ5OVP - / -7 2 ✓ Closing fragment
11-02 18:38 40m - / - DL6RS +10 / - 2 Partial capture
11-02 18:37 40m +16 / - IU5VLR - / +1 2 ✓ Closing fragment
11-02 18:18 60m - / -24 PA4PA +14 / - 3 ✓ Closing fragment
11-02 18:01 40m +5 / - UR5XEJ - / -17 2 ✓ Closing fragment
11-02 18:00 40m +3 / - LB5WB - / +1 2 ✓ Closing fragment
11-02 17:59 40m +5 / - LA7PKA -4 / - 3 ✓ Closing observed
10-30 06:52 60m -1 / -2 HA5UK +8 / +8 4 ✓ Full exchange observed
10-26 20:25 80m +15 / -13 RA3ATX -7 / -15 5 ✓ Full exchange observed
10-26 20:22 80m +14 / -15 RA3TD -1 / - 5 ✓ Closing observed
10-26 20:19 80m +14 / - DK1HSI - / -14 2 ✓ Closing fragment
10-26 20:18 80m +12 / +4 DD1GN -7 / -12 6 ✓ Full exchange observed
10-26 20:16 80m +11 / -5 YT5DL +3 / -8 5 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

160m
UTC    dB Audio  Message
202730 -13  695  DL4DBL I8OHQ -12
202745  +0 2370  I8OHQ DL4DBL R-15 (x2)
202845  +1 2370  CQ DL4DBL JO31 (x7)
204115  -9 2615  OH0Z DL4DBL +04
204230 +12 2614  DL4DBL OH0Z R-08
204245  -7 2514  OH0Z DL4DBL RR73
204345 -10 2514  5B4AMX DL4DBL R-08 (x2)
80m
UTC    dB Audio  Message
194130  +1 2806  YO3FWL DL4DBL -08
194145  +7 2806  DL4DBL YO3FWL R-16
194200  +1 2806  YO3FWL DL4DBL RR73
194215  +4 2806  DL4DBL YO3FWL 73
194330  +3 2806  CQ DL4DBL JO31 (x3)
194500  +6 2806  LZ2ZD DL4DBL JO31 (x2)
194630  +1 2807  TF1EIN DL4DBL JO31
194730  -2 2795  CQ DL4DBL JO31 (x2)
194830  +2 2795  TF1EIN DL4DBL JO31
200015  +5 2816  CQ DL4DBL JO31
200115  +2 2817  R8XF/P DL4DBL -15
60m
UTC    dB Audio  Message
193000  -6 2613  CQ DL4DBL JO31
193030  -6 2613  GB1RBL DL4DBL R-07 (x2)
193130 -10 2613  CQ DL4DBL JO31 (x2)
193215  -8 2613  DL4DBL DJ0MAB JN49 (x4)
193400  -4 2613  DJ0MAB DL4DBL RR73 (x2)
193445 -13 2613  DL4DBL DJ0MAB R-13
193500 -10 2613  DJ0MAB DL4DBL RR73
193600  -3 2613  CQ DL4DBL JO31 (x2)
40m
UTC    dB Audio  Message
182145  -7 1923  UT/WE9G DL4DBL JO31 (x3)
182445 +10 2543  M1DDD DL4DBL RR73
185445  +4 2512  IU8RFW DL4DBL -15
185500  -3 2855  DL4DBL IU8RFW JN70 (x2)
185545  +5 2512  IU8RFW DL4DBL RR73 (x2)
185715  -2 2512  CQ DL4DBL JO31 (x2)
185830 -10 2513  DL4DBL PA3WZA JO22
185830 -18 1722  DL4DBL OE5FIL JN68
185845  -1 2513  CQ DL4DBL JO31
185900 -10 2513  DL4DBL PA3WZA JO22
20m
UTC    dB Audio  Message
072700  +3  267  AD9GE DL4DBL R-12 (x2)
072800  +2 2624  AH6WP DL4DBL JO31 (x3)
073000  -7  271  CQ DL4DBL JO31 (x2)
074615 -13  266  AH6WP DL4DBL -21
172400  +1  269  CQ DL4DBL JO31 (x3)
172630  -6  269  G4JES DL4DBL -15 (x2)
172800  +4  269  CQ DL4DBL JO31 (x2)
10m
UTC    dB Audio  Message
081930  -7 2386  DL4DBL LZ2VQ KN23 (x3)
082500 -18 2373  DL4DBL R6DWD -15 (x2)
083200  -1 2499  DL4DBL IU8ADS R-08 (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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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