DF5RJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JN59

Receiver-side FT8 activity involving DF5RJ, decoded by SO8OO in southeastern Poland. 110 FT8 messages attributed to this token as transmitter, on 60m, 40m, 20m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-14 and 2026-09-10.

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 110 FT8 messages attributed to DF5RJ as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (41%), followed by 20 m (31%) and 40 m (28%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

110
Messages attributed
8
UTC dates decoded
15
Active 15-min windows
-9 dB
Estimated median S/N

Bands

60m · 45 40m · 31 20m · 34
First attributed message: 2026-06-14
Last attributed message: 2026-09-10 05:55 UTC

Observed FT8 message patterns

Attributed sample
110 messages
Active dates
8 UTC dates
Estimated median S/N
-9 dB
Estimated 10th-90th percentile
-17 to -1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 18, moderate (-15 to -9 dB) 38, strong (≥ -8 dB) 54.

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 DF5RJ 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 DF5RJ

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
JN59 · 59 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
777 km (approx.)
Last such locator decoded
2026-09-10 05:54 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 UTCBandDF5RJ S/NCounterpartCounterpart S/NMsgsCapture
09-10 05:54 60m -6 / - IS0AFM - / -13 3 ✓ Closing fragment
09-10 05:51 60m -3 / - EH1PDA -17 / -3 5 ✓ Closing observed
09-10 05:47 60m -6 / - IS0AFM - / - 5 Partial capture
09-10 05:42 60m +2 / - EA5KA - / - 8 Partial capture
09-10 05:40 60m +5 / 0 9A7BB -12 / +4 5 ✓ Full exchange observed
08-31 05:50 60m -7 / - EB5RCA - / - 5 Partial capture
08-31 05:43 60m -11 / - HA2EOU -4 / 0 5 ✓ Full exchange observed
08-31 05:42 60m -10 / - IK4JPP - / -3 2 ✓ Closing fragment
08-31 05:40 60m -8 / -4 F5OZC -14 / +1 6 ✓ Full exchange observed
08-31 05:38 60m -8 / - IK4CBO -19 / - 5 ✓ Full exchange observed
08-31 05:36 60m -12 / -1 OZ1BLP -15 / +2 8 ✓ Full exchange observed
07-31 07:04 10m - / -11 A71UN -10 / - 2 ✓ Closing fragment
07-21 06:22 20m -6 / -3 PE1NPS -16 / - 5 ✓ Full exchange observed
07-21 06:18 20m -14 / - W4GGJ - / -14 2 Partial capture
07-20 06:13 40m -18 / - OZ6P - / - 4 Partial capture
07-20 06:11 40m -19 / -13 SP3IPA -14 / - 3 ✓ Closing observed
07-20 06:08 40m -15 / - EA6BH - / -5 3 ✓ Closing fragment
07-20 06:07 40m -18 / - UT4PA -7 / - 5 ✓ Closing observed
07-20 06:06 40m -17 / - IK2UCL - / -12 2 ✓ Closing fragment
07-15 09:18 20m -17 / - A61OK - / - 2 ✓ Closing fragment
07-15 09:12 20m -8 / - 3A2MW - / -16 6 ✓ Closing fragment
07-07 07:11 20m -9 / - F5RRS -2 / -18 5 Partial capture
07-07 07:10 20m -2 / - KB3Z - / 0 2 ✓ Closing fragment
07-07 07:03 20m -6 / - HC2GRC - / - 3 Partial capture
07-07 07:01 20m -4 / - RI0SP - / -14 3 Partial capture
07-07 06:59 20m -8 / - G8IXM - / -5 2 ✓ Closing fragment
07-07 06:57 20m -5 / - KF0YOB - / -16 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

60m 
UTC    dB Audio  Message
054515  +1 2406  EA5KA DF5RJ JN59 (x2)
054700 -11 1519  IS0AFM DF5RJ JN59 (x5)
055145  -3 1519  EH1PDA DF5RJ JN59 (x3)
055300 -17 1152  DF5RJ EH1PDA RR73
055315  -4 1519  EH1PDA DF5RJ 73
055430  -8 1520  IS0AFM DF5RJ JN59 (x3)
10m 
UTC    dB Audio  Message
070400  -8 1297  DF5RJ A71UN -11 (x2)
20m 
UTC    dB Audio  Message
091930 -17 2469  A61OK DF5RJ 73
061600 -15 1670  KC8SKY DF5RJ 73
061700 -18 1625  HG8LXL DF5RJ RR73
061800 -12 1626  W4GGJ DF5RJ -14 (x2)
061930 -11 1626  KK5JY DF5RJ -20
062130 -10 1626  W4GGJ DF5RJ RR73
062245 -20 2275  DF5RJ PE1NPS JO22
062300  -5 1626  PE1NPS DF5RJ +21
062315 -15 2274  DF5RJ PE1NPS R-03
062330  -6 1626  PE1NPS DF5RJ RR73
062345 -12 2274  DF5RJ PE1NPS 73
062445  -5 1626  N1NRL DF5RJ JN59
062930  +1 2575  GM0GDD DF5RJ JN59
055315  -3 1894  XE2V DF5RJ JN59
40m 
UTC    dB Audio  Message
060830 -16 1386  EA6BH DF5RJ JN59 (x3)
060945  -7 1387  DF5RJ UT4PA KO20
061030 -18 1386  UT4PA DF5RJ RR73
061045  -7 1387  DF5RJ UT4PA 73 (x2)
061145 -14 1011  DF5RJ SP3IPA R-13
061200 -19 1386  SP3IPA DF5RJ RR73
061215 -14 1010  DF5RJ SP3IPA 73
061315 -21 1386  OZ6P DF5RJ JN59 (x4)
061700 -22 1387  OY1R DF5RJ R-20

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.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee