DF5JU — 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: JO33

Receiver-side FT8 activity involving DF5JU, decoded by SO8OO in southeastern Poland. 207 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 26 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-10-10.

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 207 FT8 messages attributed to DF5JU as the transmitting token by decoded message structure across 26 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (58%), followed by 20 m (24%) and 80 m (18%). Most decodes (91%) fell within the six-hour window 16:00-22:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10.4 dB.

Overview

207
Messages attributed
26
UTC dates decoded
46
Active 15-min windows
-10.4 dB
Estimated median S/N

Bands

80m · 37 40m · 121 20m · 49
First attributed message: 2026-06-08
Last attributed message: 2026-10-10 20:36 UTC

Observed FT8 message patterns

Attributed sample
207 messages
Active dates
26 UTC dates
Estimated median S/N
-10.4 dB
Estimated 10th-90th percentile
-20 to 0 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 66, moderate (-15 to -9 dB) 59, strong (≥ -8 dB) 82.

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 DF5JU 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 DF5JU

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
JO33 · 112 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,091 km (approx.)
Last such locator decoded
2026-10-10 20:36 UTC

Other locator fields attributed to this token: JO42 (3).

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 UTCBandDF5JU S/NCounterpartCounterpart S/NMsgsCapture
10-10 20:29 80m - / -16 IU3MAG -2 / - 2 Partial capture
10-10 20:25 80m -22 / - SP1MGM +4 / - 3 ✓ Closing observed
10-10 20:19 80m -21 / - SP1MGM - / - 2 Partial capture
10-10 20:18 80m -22 / - DL1UDO - / - 2 Partial capture
10-10 20:14 80m -16 / -15 DL2DBQ -3 / - 4 Partial capture
10-09 19:53 80m - / -22 SP3HUU +10 / - 2 Partial capture
10-09 19:47 80m - / -6 OK2MTB 0 / - 2 Partial capture
10-09 19:41 80m -18 / -17 OH8WW -3 / +3 7 ✓ Full exchange observed
10-09 19:37 80m -19 / +3 OZ1KWJ -2 / - 5 ✓ Full exchange observed
10-09 19:36 80m -13 / - ON9TT - / -7 2 ✓ Closing fragment
10-09 19:34 80m - / -11 DO1DX -10 / - 2 ✓ Closing fragment
10-09 19:21 80m -7 / -18 DL7VGU +10 / - 3 ✓ Closing observed
10-09 19:16 80m -18 / -15 HB9FGO -3 / -6 7 ✓ Full exchange observed
10-09 19:15 80m -18 / -10 DO3ME -1 / +4 6 ✓ Full exchange observed
10-02 08:57 40m - / -10 OZ9FF -11 / - 2 ✓ Closing fragment
10-02 08:55 40m - / -11 DL9KM -10 / - 5 ✓ Closing fragment
09-27 17:03 40m -12 / -8 G0LZX -12 / - 3 ✓ Full exchange observed
09-27 17:01 40m - / -7 F5LWD -12 / - 2 ✓ Closing fragment
09-27 17:00 40m -7 / -7 IW2GXC -8 / +4 3 ✓ Full exchange observed
09-27 16:58 40m - / -11 OE6OCG +1 / - 2 ✓ Closing fragment
09-20 20:30 40m - / -10 IK2UJS 0 / - 2 ✓ Closing fragment
09-20 20:29 40m -20 / - LB9ZG - / -3 2 Partial capture
09-20 20:26 40m -17 / -13 S56SD -11 / - 2 ✓ Closing observed
09-18 19:37 40m - / -17 G8KHF -2 / - 6 Partial capture
09-18 19:32 40m - / -10 OH5KNL +8 / - 3 ✓ Closing fragment
09-18 19:29 40m - / -10 9A5E +11 / - 2 ✓ Closing fragment
09-18 19:24 40m -13 / -9 SQ6WA -5 / - 2 Partial capture
09-17 19:13 40m - / -12 E70SZ +1 / - 7 Partial capture
09-17 19:11 40m - / -12 LA8ENA -4 / - 2 ✓ Closing fragment
09-17 19:07 40m - / -8 SM5FQQ +2 / - 2 ✓ Closing fragment
09-17 19:05 40m - / -4 RA3GZ +12 / - 2 ✓ Closing fragment
09-14 21:19 40m - / -18 HB9ELE +7 / - 4 Partial capture
09-02 19:42 40m -7 / - SV9QWC - / -5 3 ✓ Closing fragment
09-01 20:10 40m -11 / -6 SP9YGD -11 / - 3 ✓ Closing observed
08-30 18:35 40m -1 / - G0WTZ - / - 3 Partial capture
08-30 18:32 40m -3 / - ON3EBR - / - 4 ✓ Closing fragment
08-30 18:31 40m -2 / -11 HA7JDU +6 / - 4 ✓ Full exchange observed
08-30 18:26 40m - / -12 IW4ECF +6 / - 2 ✓ Closing fragment
08-30 18:21 40m +3 / -8 SP6TL +13 / - 3 ✓ Closing observed
08-29 20:18 40m -12 / - IS0LJG - / - 3 Partial capture
08-29 20:15 40m -10 / -11 9A5MTV -16 / +1 6 ✓ Full exchange observed
08-29 20:13 40m +4 / -3 LZ5UY +3 / - 3 ✓ Closing observed
08-29 20:11 40m -1 / - SN4K - / - 2 Partial capture
08-29 20:06 40m - / - IU2IKT -3 / - 5 Partial capture
08-29 20:03 40m +1 / +2 HB9HGI +4 / - 6 ✓ Full exchange observed
08-29 20:02 40m +2 / - GM3DRA - / - 3 Partial capture
08-29 20:00 40m -1 / -8 LZ6C +4 / +2 4 ✓ Full exchange observed
08-29 19:59 40m 0 / - GM3DRA - / - 2 Partial capture
08-29 19:55 40m +2 / -11 IU2IKT +2 / - 5 Partial capture
08-28 21:09 40m +1 / - EA5HM - / - 4 Partial capture

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
201445  -3 2132  DF5JU DL2DBQ -15
201500 -15 2142  DL2DBQ DF5JU R+17 (x2)
201800 -23 2142  DL1UDO DF5JU JO33 (x2)
201930 -24 2141  SP1MGM DF5JU JO33 (x2)
202230 -20 2141  DO1HO DF5JU JO33
202500 -19 2141  SP1MGM DF5JU R+14
202515  +4  892  DF5JU SP1MGM RR73
202530 -24 2141  SP1MGM DF5JU 73
202900  -3  925  DF5JU IU3MAG -16 (x2)
203600  -9 2141  DO1SHK DF5JU JO33
203630 -10 2141  YO7LMU DF5JU JO33
40m 
UTC    dB Audio  Message
170030  -7 1004  IW2GXC DF5JU R+04
170045  -8  340  DF5JU IW2GXC RR73
170145 -13 1580  DF5JU F5LWD -07 (x2)
170330 -12  852  DF5JU G0LZX -08
170345 -10 1004  G0LZX DF5JU R+15 (x2)
170615  -6 1004  ON3CL DF5JU JO33
085515 -10 1433  DF5JU DL9KM JN68 (x5)
085745  -9 2316  DF5JU OZ9FF -10 (x2)
20m 
UTC    dB Audio  Message
194715  -6 2770  DF5JU F1PBZ -12 (x2)
194830 -15  836  JH5AVM DF5JU JO33
102845 -14  837  WK2M DF5JU JO33 (x6)
103345 -14  836  EI9KF DF5JU JO33
184530 -10  835  AC2XM DF5JU JO33 (x5)

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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