DH1JAD — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO31

Receiver-side FT8 activity involving DH1JAD, decoded by SO8OO in southeastern Poland. 484 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 67 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-15.

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 484 FT8 messages attributed to DH1JAD as the transmitting token by decoded message structure across 67 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (46%), followed by 40 m (36%) and 20 m (18%). Several six-hour UTC windows tied for the largest share (83%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

484
Messages attributed
67
UTC dates decoded
124
Active 15-min windows
-10 dB
Estimated median S/N

Bands

80m · 223 40m · 172 20m · 89
First attributed message: 2026-06-07
Last attributed message: 2026-09-15 12:01 UTC

Observed FT8 message patterns

Attributed sample
484 messages
Active dates
67 UTC dates
Estimated median S/N
-10 dB
Estimated 10th-90th percentile
-19 to +1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 121, moderate (-15 to -9 dB) 158, strong (≥ -8 dB) 205.

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 DH1JAD 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 DH1JAD

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 · 187 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,054 km (approx.)
Last such locator decoded
2026-09-15 12:00 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 UTCBandDH1JAD S/NCounterpartCounterpart S/NMsgsCapture
09-15 12:00 40m -8 / - G0OYQ - / +5 3 ✓ Closing fragment
09-15 11:52 40m -22 / - M7TPT - / - 2 Partial capture
09-15 11:46 40m -13 / - G4MJS - / -1 2 Partial capture
09-14 19:40 80m - / -9 OK2USM +8 / - 2 ✓ Closing fragment
09-14 19:35 80m - / -9 F5NNN -7 / - 2 ✓ Closing fragment
09-14 19:33 80m - / +4 DO1LR -1 / - 2 ✓ Closing fragment
09-14 19:28 40m -1 / - MM7WQD - / - 2 Partial capture
09-12 18:50 40m +4 / -20 GB1HTC -4 / -10 6 Partial capture
09-12 18:48 40m -1 / -7 PD9T -16 / -15 5 ✓ Full exchange observed
09-10 19:05 80m - / - SP3IPA +3 / - 2 Partial capture
09-10 19:02 80m -3 / +1 E74MW +15 / +5 4 ✓ Full exchange observed
09-10 19:00 80m -4 / +2 SN40KZE +9 / +5 3 Partial capture
09-10 18:46 40m -6 / -5 IQ2AAH +2 / -1 8 ✓ Full exchange observed
09-09 19:20 80m -6 / -9 SP7OK +9 / -3 6 ✓ Full exchange observed
09-09 19:18 80m -5 / +3 OZ1GC -4 / -1 5 ✓ Full exchange observed
09-09 19:08 40m -4 / -3 PI4TS -5 / -5 7 ✓ Full exchange observed
09-09 19:06 40m -14 / -6 SQ6JFJ 0 / - 3 ✓ Closing observed
09-09 19:05 40m 0 / -4 ON8DM -2 / -10 4 Partial capture
09-09 19:01 40m -6 / - G8DJO - / -8 4 ✓ Closing fragment
09-09 19:00 40m -1 / -4 M7LBT -10 / -1 5 ✓ Full exchange observed
09-09 18:57 40m -5 / -4 F1RIQ -10 / -13 5 ✓ Full exchange observed
09-08 19:02 80m -4 / - DL2DBI - / +10 2 ✓ Closing fragment
09-08 18:52 40m -9 / - M7GQW -9 / -11 2 ✓ Closing observed
09-08 18:51 40m -11 / - IU2IKT - / +4 2 ✓ Closing fragment
09-07 19:14 80m -10 / - HB9EKJ - / - 2 Partial capture
09-07 19:11 80m -13 / - ON3CH - / -13 4 ✓ Closing fragment
09-07 19:09 80m - / -9 DA6IT -8 / - 2 ✓ Closing fragment
09-07 19:07 80m -16 / - OV6ZM - / +1 2 Partial capture
09-07 18:57 40m -3 / +3 GM0AXY -7 / -4 4 ✓ Full exchange observed
09-07 18:55 40m - / -13 DL6NDN +12 / - 2 ✓ Closing fragment
09-07 18:53 40m 0 / - N5MIG/P - / +4 2 Partial capture
09-06 19:26 80m -4 / -1 IK2BUF -17 / - 2 Partial capture
09-06 19:25 80m -8 / -18 OZ7CL -6 / +2 4 ✓ Full exchange observed
09-06 19:23 80m -8 / -12 E75C +5 / -3 5 ✓ Full exchange observed
09-06 19:12 40m - / - EA3HMM +6 / - 2 Partial capture
09-06 19:10 40m -9 / -11 OV6ZM +6 / -2 5 ✓ Full exchange observed
09-06 15:13 40m -10 / +3 DL7UKM -2 / +2 4 ✓ Full exchange observed
09-05 19:51 80m - / -10 EA1AKS -12 / - 2 ✓ Closing fragment
09-03 14:59 40m -20 / +9 DL0HAM +10 / +5 8 ✓ Full exchange observed
09-02 19:13 80m -15 / - I1APQ - / -6 3 ✓ Closing fragment
09-02 10:38 40m -22 / +6 SP100PKP 0 / -2 3 Partial capture
09-02 10:34 40m - / +8 DL3IKE -20 / - 2 ✓ Closing fragment
09-02 10:33 40m - / - PE9JAN -22 / - 2 ✓ Closing fragment
09-02 10:15 40m - / - DH3CW -8 / - 2 ✓ Closing fragment
09-01 19:45 40m -9 / -6 CT7AIU -10 / -5 4 ✓ Full exchange observed
09-01 19:43 40m -4 / - G5GDX - / -6 3 ✓ Closing fragment
08-29 19:05 80m -14 / -9 M0PYU -21 / -5 4 ✓ Full exchange observed
08-29 19:04 80m -11 / -20 SP1905MFK +3 / -5 2 Partial capture
08-29 19:02 80m - / -8 DO2BBC -1 / - 2 ✓ Closing fragment
08-28 20:02 80m -11 / - IN3IZQ - / -7 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
185100  +5  651  GB1HTC DH1JAD R-09 (x4)
192800  -3 1035  MM7WQD DH1JAD JO31 (x2)
114345 -21 1557  ON3MOH/P DH1JAD JO31
114645 -13  796  G4MJS DH1JAD JO31 (x2)
115230 -22 1950  M7TPT DH1JAD JO31 (x2)
115500 -16 1371  DH4MK DH1JAD 73
120000  -8  542  G0OYQ DH1JAD JO31 (x3)
80m 
UTC    dB Audio  Message
190015  -5  615  SN40KZE DH1JAD JO31
190030  +9  620  DH1JAD SN40KZE +02
190045  -3  615  SN40KZE DH1JAD R+05
190230 +14  820  DH1JAD E74MW +01
190245  -3  453  E74MW DH1JAD R+05
190300 +16  820  DH1JAD E74MW +01 (x2)
190500  +2  517  DH1JAD SP3IPA JO82 (x2)
193345  -3 1175  DH1JAD DO1LR +04 (x2)
193515  -9  999  DH1JAD F5NNN R-09 (x2)
194000  +5 1232  DH1JAD OK2USM -09 (x2)
20m 
UTC    dB Audio  Message
183500  -6  515  DH1JAD LZ1WV -14
182700  -9 1574  DH1JAD EA5JLN +03
091530  -5 1996  DH1JAD F6FDY RR73
194730  +0  978  DH1JAD II7MGXX -09
194800  +3  978  DH1JAD RR73; F1TXI <...> -04
195030  -4  813  DH1JAD CT7BDJ -02 (x2)
195700 -17 1040  HA3HM DH1JAD JO31
193200  +3  568  DH1JAD TA3KJ -16 (x2)
184930  -5 1844  DH1JAD G3VCQ -03 (x2)
185230  +0  621  DH1JAD M9OOS -19 (x2)
185530  -8  832  DH1JAD M3WHB RR73

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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