DL4JTH — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO60

Receiver-side FT8 activity involving DL4JTH, decoded by SO8OO in southeastern Poland. 1,787 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 75 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-10-15.

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 1,787 FT8 messages attributed to DL4JTH as the transmitting token by decoded message structure across 75 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (82%), followed by 20 m (10%) and 10 m (7%). Most decodes (76%) fell within the six-hour window 12:00-18:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

1,787
Messages attributed
75
UTC dates decoded
266
Active 15-min windows
-11 dB
Estimated median S/N

Bands

40m · 1,468 20m · 186 10m · 133
First attributed message: 2026-06-10
Last attributed message: 2026-10-15 18:30 UTC

Observed FT8 message patterns

Attributed sample
1,787 messages
Active dates
75 UTC dates
Estimated median S/N
-11 dB
Estimated 10th-90th percentile
-20 to -0.1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 513, moderate (-15 to -9 dB) 597, strong (≥ -8 dB) 677.

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 DL4JTH 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 DL4JTH

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
JO60 · 873 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
628 km (approx.)
Last such locator decoded
2026-10-15 18:30 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 UTCBandDL4JTH S/NCounterpartCounterpart S/NMsgsCapture
10-15 18:30 40m -7 / - R4GD - / - 2 Partial capture
10-10 15:55 40m -9 / - GI0VAB - / - 3 Partial capture
10-06 11:41 40m -2 / - M1DBB - / - 2 Partial capture
10-06 11:38 40m -1 / -8 S57ACD -5 / -6 8 ✓ Full exchange observed
10-06 11:35 40m +1 / - M1DBB - / - 3 Partial capture
10-06 11:34 40m 0 / +1 YO2UKG +11 / -3 5 ✓ Full exchange observed
10-05 12:29 40m -2 / - M0LAD - / - 2 Partial capture
10-05 12:27 40m -6 / -8 SP4GDW -15 / -1 4 ✓ Full exchange observed
10-05 12:26 40m -12 / - PA0WCH - / - 2 Partial capture
10-05 12:25 40m -12 / - F4FYO - / -3 3 ✓ Closing fragment
10-03 12:19 10m - / +10 TF4M -17 / - 2 ✓ Closing fragment
10-03 12:07 10m - / -12 CR7BUJ -12 / - 2 ✓ Closing fragment
10-03 12:00 10m - / -2 R9AV -17 / - 2 ✓ Closing fragment
09-27 16:25 40m -3 / - M3ZZF - / -2 6 ✓ Closing fragment
09-27 16:22 40m -2 / -6 G3JPJ -21 / -5 6 ✓ Full exchange observed
09-27 16:20 40m -6 / - F1BBM - / 0 3 ✓ Closing fragment
09-27 16:17 40m -1 / +9 YL2FD +7 / - 4 ✓ Closing observed
09-27 16:15 40m -6 / - RZ4FWA - / -13 4 Partial capture
09-27 16:13 40m -1 / - 2E0LMA - / -20 3 ✓ Closing fragment
09-27 16:10 40m -6 / - EV6Z - / - 2 Partial capture
09-27 16:06 40m -6 / - SP7OK -1 / 0 4 ✓ Closing observed
09-27 15:45 40m -3 / - 8A81TEL - / - 2 Partial capture
09-27 12:27 40m -14 / - SM7IUN - / +10 2 ✓ Closing fragment
09-27 12:25 40m -7 / - SQ7KHW -16 / +9 4 ✓ Closing observed
09-27 12:23 40m -13 / - 9A2LM - / -17 3 ✓ Closing fragment
09-26 11:14 40m -14 / - IU4PPL - / -9 6 ✓ Closing fragment
09-26 11:12 40m -12 / - ON4KBU - / -2 2 ✓ Closing fragment
09-26 11:09 40m -11 / +2 DJ3ZF -20 / +9 5 ✓ Full exchange observed
09-26 11:08 40m -11 / - LB9ZG - / -20 3 ✓ Closing fragment
09-25 12:13 40m -12 / - PE1KVL - / -20 2 ✓ Closing fragment
09-25 12:11 40m -11 / -1 S57CT -12 / +1 7 ✓ Full exchange observed
09-25 12:10 40m -15 / - OZ2ADC - / +6 3 ✓ Closing fragment
09-25 12:07 40m -6 / - DG9SEH -19 / - 4 ✓ Closing observed
09-25 12:06 40m -6 / - F5MXH - / -1 2 Partial capture
09-25 12:05 40m -9 / - SQ5KB - / +8 3 ✓ Closing fragment
09-25 12:02 40m -15 / -9 SA4AGM -20 / -6 4 ✓ Full exchange observed
09-25 12:00 40m -16 / 0 9A1CCB 0 / - 5 ✓ Full exchange observed
09-25 11:58 40m -12 / - DL7ACN -19 / 0 4 ✓ Closing observed
09-25 11:57 40m -13 / - 9A/G3VCQ - / -10 2 Partial capture
09-25 11:35 10m - / -11 UN7LAN -20 / - 2 ✓ Closing fragment
09-23 17:48 40m -13 / - A41KB - / -7 2 ✓ Closing fragment
09-23 17:40 40m -17 / - VK2MDS - / - 3 Partial capture
09-22 18:36 40m +9 / -11 ZA5G -6 / -25 4 ✓ Full exchange observed
09-17 12:49 40m 0 / - I0XNH - / -11 4 ✓ Closing fragment
09-17 12:48 40m -2 / - ON8WR - / -3 2 ✓ Closing fragment
09-15 16:49 40m +5 / - YC2BUZ - / - 2 Partial capture
09-14 17:19 40m +4 / - G4SPE - / -8 6 ✓ Closing fragment
09-13 16:42 40m 0 / - C31HS - / - 3 Partial capture
09-11 17:56 40m +4 / - VI9POL - / - 2 Partial capture
09-11 17:53 40m - / -10 IT9ECY -13 / - 4 Partial capture

Recent FT8 messages decoded at SO8OO

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

10m 
UTC    dB Audio  Message
165000  +1  568  4Z5ML DL4JTH JO60 (x2)
165100 -16 1499  PY2FUI DL4JTH JO60 (x3)
110930 -20 1742  DL4JTH CU2AP RR73
113545 -20 2074  DL4JTH UN7LAN -11 (x2)
120015 -20 1193  DL4JTH R9AV -02 (x2)
120700 -11 1234  DL4JTH CR7BUJ -12 (x2)
121900 -16 2216  DL4JTH TF4M +10 (x2)
120800 -24 1528  DL4JTH WB2REM +02
40m 
UTC    dB Audio  Message
113815  -5 2427  DL4JTH S57ACD -08
113830  -2 2426  S57ACD DL4JTH R-06 (x2)
113915  -5 2426  DL4JTH S57ACD -08
113930  +0 2426  S57ACD DL4JTH R-06 (x3)
114145  -5 2475  M1DBB DL4JTH JO60 (x2)
162100  -5 1305  DL4JTH ON8AT -02
155500  -6 1858  GI0VAB DL4JTH JO60 (x3)
183015  -5 1985  R4GD DL4JTH JO60 (x2)
20m 
UTC    dB Audio  Message
120915  -1 1801  G6ZRV DL4JTH R-03
120930  -1 2002  DL4JTH G6ZRV RR73 (x2)
121015  -3  729  OK1CT/QRP DL4JTH JO60
121030  +2 2002  DL4JTH G6ZRV RR73
121045  -2  729  OK1CT/QRP DL4JTH JO60
121115  +2  729  G6ZRV DL4JTH 73
121130  -4 2461  DL4JTH UT4QM KN77
121145  +0  729  UT4QM DL4JTH -16
121200 -11 2461  DL4JTH UT4QM R-14
121215  -2  729  UT4QM DL4JTH RR73
121230 -11 2461  DL4JTH UT4QM 73
121345  +1  729  OK1CT/QRP DL4JTH JO60 (x3)

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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