DD8HG — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO53

Receiver-side FT8 activity involving DD8HG, decoded by SO8OO in southeastern Poland. 822 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 30 UTC dates in the available aggregate history. Observed between 2026-07-18 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 822 FT8 messages attributed to DD8HG as the transmitting token by decoded message structure across 30 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (54%), followed by 40 m (46%). Most decodes (77%) fell within the six-hour window 17:00-23:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

822
Messages attributed
30
UTC dates decoded
156
Active 15-min windows
-11 dB
Estimated median S/N

Bands

First attributed message: 2026-07-18
Last attributed message: 2026-09-20 18:40 UTC

Observed FT8 message patterns

Attributed sample
822 messages
Active dates
30 UTC dates
Estimated median S/N
-11 dB
Estimated 10th-90th percentile
-17 to -5 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 125, moderate (-15 to -9 dB) 447, 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.

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 DD8HG

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
JO53 · 714 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
841 km (approx.)
Last such locator decoded
2026-09-20 18:40 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 UTCBandDD8HG S/NCounterpartCounterpart S/NMsgsCapture
09-20 18:40 40m -6 / - VJ6X - / - 2 Partial capture
09-20 18:33 40m -9 / - VJ6X - / - 4 Partial capture
09-20 18:30 40m -8 / -8 PD2JV +4 / +7 5 ✓ Full exchange observed
09-19 22:18 40m - / -10 IU2VUZ -6 / - 2 Partial capture
09-19 18:39 40m -12 / -23 G4FRD -13 / - 8 Partial capture
09-19 18:35 40m -15 / - JA4FKX - / - 4 Partial capture
09-19 18:25 40m -8 / - JA4FKX - / - 6 Partial capture
09-19 11:56 40m - / +1 DK4FH -2 / - 2 ✓ Closing fragment
09-19 11:50 40m - / -25 OE3FVU +2 / - 2 ✓ Closing fragment
09-19 11:40 40m - / -19 LY1DY -9 / - 2 ✓ Closing fragment
09-19 10:05 40m - / -13 SQ2ODE -9 / - 5 ✓ Closing fragment
09-19 09:57 40m - / -10 OK2PUM/P -18 / - 2 Partial capture
09-19 07:33 40m -8 / +3 SP6TID +6 / - 2 Partial capture
09-19 07:28 40m - / -7 LB1HI -4 / - 2 ✓ Closing fragment
09-18 23:21 40m - / -20 HZ1TT -12 / - 4 ✓ Closing fragment
09-18 22:46 40m - / -20 4X5JK -7 / - 10 Partial capture
09-18 13:16 40m - / -15 DL7FAI -22 / - 2 Partial capture
09-17 22:34 40m - / -17 RT6Z +3 / - 4 ✓ Closing fragment
09-17 20:58 40m - / -9 ON3MOH -17 / - 4 ✓ Closing fragment
09-17 16:30 40m -13 / -6 9A3MRN -5 / - 4 ✓ Closing observed
09-15 19:53 40m -9 / - SM1ALH - / - 7 Partial capture
09-15 19:49 40m -11 / - OE3ZIO - / - 3 ✓ Closing fragment
09-15 19:42 40m -10 / - GM0SDV - / - 7 Partial capture
09-15 19:21 40m -15 / - RA3VAN - / - 2 Partial capture
09-15 19:10 40m -14 / - RA3VAN - / - 5 Partial capture
09-14 20:25 40m -20 / - M9STN - / - 2 Partial capture
09-14 19:43 40m -14 / -13 MI0OBC -3 / - 3 Partial capture
09-14 19:34 40m -13 / -22 U1BD -14 / -6 5 ✓ Full exchange observed
09-14 19:08 40m -17 / - G0NGL - / - 4 Partial capture
09-14 19:04 40m -22 / -12 PB5DX +1 / - 4 ✓ Closing observed
09-14 18:54 40m -14 / -18 I0XNH +4 / +1 6 ✓ Full exchange observed
09-14 18:38 40m - / -18 DL1DCT -7 / - 4 ✓ Closing fragment
09-14 18:36 40m - / -19 PH9OY -6 / - 4 Partial capture
09-14 17:57 40m - / -7 M0BEW +9 / - 3 ✓ Closing fragment
09-12 18:42 40m -10 / -12 PA3EWP +1 / - 6 ✓ Closing observed
09-12 12:28 40m - / -12 SP7VCL -6 / - 3 ✓ Closing fragment
09-12 08:46 40m - / -19 SQ7RN +2 / - 3 ✓ Closing fragment
09-12 00:51 40m - / - UR9QQ -14 / - 2 Partial capture
09-12 00:15 40m - / -19 YL2KF -7 / - 2 ✓ Closing fragment
09-11 19:29 40m -11 / - UA3VVA - / - 5 Partial capture
09-11 09:58 40m - / - SP7ROM -10 / - 2 Partial capture
09-11 09:57 40m - / -8 SP6FME 0 / - 3 ✓ Closing fragment
09-10 06:02 40m - / -9 IK3SCB +2 / - 2 ✓ Closing fragment
09-08 18:39 40m - / -13 SP9UPH +8 / - 4 ✓ Closing fragment
09-08 18:36 40m - / - SP9UPH +10 / - 2 Partial capture
09-08 18:31 40m -11 / -9 EI8GS +4 / - 4 ✓ Closing observed
09-08 18:26 40m -10 / - IU2SLI - / +2 4 Partial capture
09-08 18:10 40m -14 / - R4CBF/P - / - 2 Partial capture
09-08 18:06 40m -12 / - R4CBF/P - / - 3 Partial capture
09-08 18:00 40m - / -14 M9PCA 0 / - 4 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m
UTC    dB Audio  Message
215615  -5 2619  DD8HG EA1FE -15
221845  -6 2935  DD8HG IU2VUZ -10 (x2)
182900  -3  403  RW3DDZ DD8HG 73
183030 -10  403  PD2JV DD8HG JO53
183045  +3 1975  DD8HG PD2JV -08
183100  -6  403  PD2JV DD8HG R+07
183115  +4 1975  DD8HG PD2JV RR73
183130  -7  403  PD2JV DD8HG 73
183315  -7  404  VJ6X DD8HG JO53 (x6)
20m
UTC    dB Audio  Message
200215 -13 2721  AA3B DD8HG JO53 (x9)
151515  -9 2828  EA7KLL DD8HG JO53
164145 -14 2829  HB9IUA DD8HG JO53 (x2)
164315 -11 2828  US5HL DD8HG JO53
171730  +3 2415  DD8HG 9A170NT -11 (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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