DH3DX — 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 DH3DX, decoded by SO8OO in southeastern Poland. 395 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 22 UTC dates in the available aggregate history. Observed between 2026-06-26 and 2026-10-22.

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 395 FT8 messages attributed to DH3DX as the transmitting token by decoded message structure across 22 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (51%), followed by 40 m (39%) and 20 m (9%). The busiest six-hour window was 20:00-02:00 UTC, containing 46% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (63%); the estimated median was -4.2 dB.

Overview

395
Messages attributed
22
UTC dates decoded
58
Active 15-min windows
-4.2 dB
Estimated median S/N

Bands

80m · 203 40m · 153 20m · 35 10m · 4
First attributed message: 2026-06-26
Last attributed message: 2026-10-22 08:20 UTC

Observed FT8 message patterns

Attributed sample
395 messages
Active dates
22 UTC dates
Estimated median S/N
-4.2 dB
Estimated 10th-90th percentile
-16 to +9 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 48, moderate (-15 to -9 dB) 97, strong (≥ -8 dB) 250.

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 DH3DX 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 DH3DX

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 · 201 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,054 km (approx.)
Last such locator decoded
2026-10-22 08:17 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 UTCBandDH3DX S/NCounterpartCounterpart S/NMsgsCapture
10-22 08:17 80m -21 / -3 DO2FRE -18 / -19 6 ✓ Full exchange observed
10-22 08:07 80m -13 / - DK2MAX - / - 3 Partial capture
10-22 08:00 80m -11 / - DA6HAL - / - 2 Partial capture
10-10 07:51 40m -6 / - DH9YAP - / - 4 Partial capture
10-10 07:49 40m -2 / - 4O/DL1FDH - / - 2 Partial capture
10-10 07:40 40m -11 / -10 DJ2CR -9 / +3 4 ✓ Full exchange observed
10-10 07:37 40m -7 / - F4LSG - / -11 2 Partial capture
10-10 07:35 40m -8 / - DC9GT - / -9 3 ✓ Closing fragment
10-10 07:32 40m - / +4 DL9SAR -6 / - 2 ✓ Closing fragment
10-10 07:30 40m -10 / +6 DF3VX -18 / -5 4 ✓ Full exchange observed
10-10 07:28 40m -12 / - PF1B - / -5 2 ✓ Closing fragment
10-10 07:26 40m -14 / - SM7WNM - / -1 2 ✓ Closing fragment
10-10 07:25 40m -14 / - DL1TJ - / -15 2 ✓ Closing fragment
10-10 07:23 40m -15 / - DL8HAM - / -12 4 ✓ Closing fragment
10-09 08:12 40m -8 / - DC9GT - / - 3 Partial capture
10-09 08:10 40m -3 / - DM8ITZ - / - 2 Partial capture
10-09 08:05 40m -11 / - DL7VBJ - / - 5 Partial capture
10-09 08:03 40m -8 / - DL1PAB - / - 2 Partial capture
10-09 08:00 40m -15 / - DG5YHK -18 / - 2 ✓ Closing observed
10-09 07:52 40m -6 / - DG0JDE/P - / -13 3 ✓ Closing fragment
10-09 07:50 40m - / -11 DK3TNA -16 / - 2 ✓ Closing fragment
10-09 07:43 40m -14 / -16 DL5YAS -9 / -12 8 ✓ Full exchange observed
10-09 07:40 80m -12 / -12 DM5KM -1 / - 3 ✓ Closing observed
10-09 07:38 80m -13 / - DL9YAO - / -9 3 ✓ Closing fragment
10-09 07:35 80m -14 / - DL9YAO - / - 2 Partial capture
10-09 07:33 80m -24 / - DO7SP - / +6 3 ✓ Closing fragment
10-09 07:29 80m -19 / - DL3BH - / - 2 ✓ Closing fragment
10-09 07:28 80m -13 / - PE2JMR - / - 2 Partial capture
10-09 07:27 80m -16 / - PC1K - / -8 2 ✓ Closing fragment
10-09 07:26 80m -16 / - DO1BWS -9 / - 3 ✓ Closing observed
10-08 11:32 40m -15 / - EA3HMM - / -10 2 Partial capture
10-08 11:29 40m -12 / - DL1ESZ - / -22 4 ✓ Closing fragment
10-08 11:25 40m -10 / - DL2SUD - / -4 2 ✓ Closing fragment
10-08 11:20 40m -16 / - DH9YAP - / - 2 Partial capture
10-08 11:19 40m -15 / - DA0M - / -6 2 ✓ Closing fragment
10-08 11:18 40m -19 / +1 DL8NCV -22 / +3 4 ✓ Full exchange observed
10-08 11:17 40m -16 / - DG3DAF - / - 2 Partial capture
10-08 11:16 40m -2 / - DA0M - / - 2 Partial capture
10-08 11:13 40m -17 / - DL2FM - / -9 4 Partial capture
10-08 11:06 40m -5 / - DL6LAY - / -19 3 ✓ Closing fragment
10-08 11:03 40m -14 / - AO5CV - / - 2 Partial capture
10-07 06:56 80m -2 / - DO2CPH - / +1 2 ✓ Closing fragment
10-07 06:54 80m -2 / - DO2AY - / -2 2 ✓ Closing fragment
10-07 06:43 80m -4 / - LB2WD - / - 2 ✓ Closing fragment
10-07 06:30 80m -3 / - DO2SGW - / -19 4 ✓ Closing fragment
10-07 06:28 80m -7 / - DO9LIP - / -10 5 ✓ Closing fragment
10-07 06:27 80m -8 / - DF40ABF -9 / +8 3 Partial capture
10-07 06:26 80m +8 / - DL9UW - / - 2 Partial capture
10-07 06:24 80m +1 / - DH1DAC -12 / - 5 ✓ Closing observed
10-07 06:23 80m +2 / - DO5HOK - / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
074030  +2  745  DH3DX DM5KM RR73
074045 -12  745  DM5KM DH3DX 73
080045 -11 1735  DA6HAL DH3DX JO31 (x2)
080145 -11  934  DK2MAX DH3DX JO31 (x5)
081745 -23 1631  DO2FRE DH3DX JO31
081800 -22 1631  DH3DX DO2FRE -03 (x3)
081945 -21 1632  DO2FRE DH3DX R-19 (x2)
40m 
UTC    dB Audio  Message
073545  -8  242  DC9GT DH3DX R-09 (x2)
073715  -6 2579  F4LSG DH3DX -11 (x2)
074030 -11 1224  DH3DX DJ2CR -10
074045 -10 1225  DJ2CR DH3DX R+03
074100  -7 1224  DH3DX DJ2CR RR73
074115 -12 1225  DJ2CR DH3DX 73
074515  -4 2531  F5OYA/P DH3DX JO31
074945  -4 2531  4O/DL1FDH DH3DX JO31 (x2)
075115  -4  680  DH9YAP DH3DX JO31 (x4)

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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