DF4JY — 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 DF4JY, decoded by SO8OO in southeastern Poland. 2 FT8 messages attributed to this token as transmitter, on 40m, across 1 UTC dates in the available aggregate history. Last observed 2026-09-17.

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 2 FT8 messages attributed to DF4JY as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The available sample contains attributed decodes on 40 m (100%). The sample is too small to infer a recurring UTC-hour or received-S/N pattern.

Overview

2
Messages attributed
1
UTC dates decoded
1
Active 15-min windows
-
S/N pattern not inferred

Bands

40m · 2
First attributed message: 2026-09-17
Last attributed message: 2026-09-17 20:41 UTC

Observed FT8 message patterns

Attributed sample
2 messages
Active dates
1 UTC dates
S/N summary
Too few decodes
S/N percentile sample
Too small
Recurring-pattern threshold
Not met

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with DF4JY in decoded directed-looking exchanges:

Most frequent locator attributed to DF4JY

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
SO8OO receiver locator
KN09VW
Locator-centre separation
1,054 km (approx.)
Last such locator decoded
2026-09-17 20:41 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 UTCBandDF4JY S/NCounterpartCounterpart S/NMsgsCapture
09-19 14:39 40m - / -13 PA2V -8 / - 2 ✓ Closing fragment
09-19 14:28 40m - / -12 PB7Z -4 / - 2 ✓ Closing fragment
09-19 14:03 40m - / -18 IW5DNZ -2 / - 5 ✓ Closing fragment
09-19 13:53 40m - / -14 DL2FM -10 / - 2 Partial capture
09-19 13:42 40m - / -17 DL3AWB +7 / - 2 ✓ Closing fragment
09-18 20:15 40m - / -13 IV3UWA +2 / - 2 ✓ Closing fragment
09-18 19:51 40m - / -7 F8MRQ +4 / - 2 ✓ Closing fragment
09-18 19:50 40m - / -12 HB9HFM -1 / - 2 ✓ Closing fragment
09-18 19:39 40m - / -12 F8MRQ 0 / - 3 Partial capture
09-18 19:22 40m - / -19 EB1LA -8 / - 2 Partial capture
09-18 18:56 40m - / -11 PD1DP +1 / - 2 ✓ Closing fragment
09-18 18:48 40m - / -14 DL3JHK +3 / - 4 ✓ Closing fragment
09-18 18:13 40m - / -5 F1DSZ -8 / - 2 ✓ Closing fragment
09-17 20:43 40m - / -9 EA1DR -6 / - 2 ✓ Closing fragment
09-17 13:34 40m - / -16 ON6ZV -8 / - 2 Partial capture
09-17 13:25 40m - / - PD3FR -8 / - 3 Partial capture
09-17 13:14 40m - / -19 PA1AZ -7 / - 3 ✓ Closing fragment
09-17 13:06 40m - / -16 DL7CHR +8 / - 2 ✓ Closing fragment
09-17 11:39 40m - / -14 DF0WH -3 / - 2 ✓ Closing fragment
09-17 10:49 40m - / -14 DK2SW -9 / - 3 ✓ Closing fragment
09-17 10:30 40m - / -15 PD2JV -21 / - 2 ✓ Closing fragment
09-16 19:56 40m - / -13 EH3ST -22 / - 2 Partial capture
09-16 13:31 40m - / -13 DL2HUC -11 / - 3 ✓ Closing fragment
09-16 12:45 40m - / - DG4LXM +1 / - 5 Partial capture
09-16 12:28 40m - / -11 HB9DGR -14 / - 2 ✓ Closing fragment
09-15 19:44 40m - / -8 M7WUK -18 / - 2 ✓ Closing fragment
09-15 19:32 40m - / -13 OZ1NIB -2 / - 2 Partial capture
09-15 19:19 40m - / -15 F4HEX -1 / - 3 ✓ Closing fragment
09-15 14:16 40m - / -18 DF2WS -15 / - 3 ✓ Closing fragment
09-15 14:11 40m - / -13 OZ2BX -18 / - 2 ✓ Closing fragment
09-15 14:04 40m - / -15 HA7TM +17 / - 2 ✓ Closing fragment
09-14 20:23 40m - / -23 M0PKE -2 / - 3 ✓ Closing fragment
09-14 20:16 40m - / -12 F8GAF +2 / - 2 Partial capture
09-14 20:15 40m - / -15 F4MLW +2 / - 2 Partial capture
09-14 20:10 40m - / -17 ON6AO +3 / - 2 ✓ Closing fragment
09-14 18:52 40m - / -16 DL4MFF +8 / - 3 ✓ Closing fragment
09-14 18:45 40m - / -24 HB9ELE +6 / - 4 ✓ Closing fragment
09-14 18:41 40m - / -24 HB9ELE +4 / - 3 Partial capture
09-14 18:35 40m - / -19 I0XNH +6 / - 3 Partial capture
09-14 18:24 40m - / -16 PA2MD +4 / - 6 Partial capture
09-13 10:34 40m - / -11 PD0IFI -13 / - 2 ✓ Closing fragment
09-13 10:17 40m - / -18 DL6CMF -8 / - 2 ✓ Closing fragment
09-13 10:11 40m - / -12 DL5MK +2 / - 2 ✓ Closing fragment
09-13 09:52 40m - / -16 DL2FM -18 / - 2 Partial capture
09-13 09:34 40m - / -19 DL3LBK -19 / - 3 ✓ Closing fragment
09-12 19:29 40m - / -11 OZ1KZX -8 / - 3 ✓ Closing fragment
09-12 19:18 40m - / -22 DJ2AX +6 / - 3 Partial capture
09-12 18:47 40m - / -15 G4CFS +1 / - 2 ✓ Closing fragment
09-12 18:41 40m - / -13 I2OGV +10 / - 2 ✓ Closing fragment
09-12 18:36 40m - / -25 PI4DX +4 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
134200  +7  642  DF4JY DL3AWB -17 (x2)
134700 -13 1007  DF4JY DC2CB RR73
135300 -11  692  DF4JY DL2FM -14 (x2)
140330  -1  320  DF4JY IW5DNZ -18 (x5)
142800  -1  343  DF4JY PB7Z -12 (x2)
143200 -12 2517  DF4JY IU2WCY -24
143900  -8  568  DF4JY PA2V -13 (x2)
20m 
UTC    dB Audio  Message
132330 -19 2148  DF4JY IQ4JO JN63 (x3)
131645 -10  461  DF4JY IK4LZH R-09
153945 -16 1455  DF4JY M0RLF RR73

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