DF8RU — 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: JN68

Receiver-side FT8 activity involving DF8RU, decoded by SO8OO in southeastern Poland. 8,199 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 42 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-19.

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 8,199 FT8 messages attributed to DF8RU as the transmitting token by decoded message structure across 42 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (73%), followed by 80 m (18%) and 20 m (8%). The busiest six-hour window was 18:00-00:00 UTC, containing 50% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (83%); the estimated median was +0.2 dB.

Overview

8,199
Messages attributed
42
UTC dates decoded
442
Active 15-min windows
+0.2 dB
Estimated median S/N

Bands

80m · 1,484 40m · 5,999 20m · 684 10m · 32
First attributed message: 2026-06-06
Last attributed message: 2026-10-19 22:40 UTC

Observed FT8 message patterns

Attributed sample
8,199 messages
Active dates
42 UTC dates
Estimated median S/N
+0.2 dB
Estimated 10th-90th percentile
-11.9 to +12 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 405, moderate (-15 to -9 dB) 959, strong (≥ -8 dB) 6,835.

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 DF8RU 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 DF8RU

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
JN68 · 5,127 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
658 km (approx.)
Last such locator decoded
2026-10-19 22:40 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 UTCBandDF8RU S/NCounterpartCounterpart S/NMsgsCapture
10-19 22:38 40m -16 / - BV2NF - / - 3 Partial capture
10-18 05:02 40m - / +1 UY0HY -12 / - 2 ✓ Closing fragment
10-18 04:58 40m -23 / -15 R3XDT -17 / - 4 Partial capture
10-18 04:50 40m -8 / - KJ5ORI - / -7 2 ✓ Closing fragment
10-18 04:48 40m -15 / - EA7NK - / -9 3 ✓ Closing fragment
10-18 04:45 40m -4 / -9 UA3LRN -10 / - 2 Partial capture
10-18 04:43 40m -3 / - K5MGY - / - 3 Partial capture
10-18 04:41 40m - / - R4FDD -17 / - 3 Partial capture
10-18 04:39 40m -6 / - N4DWD - / - 2 Partial capture
10-18 04:36 40m -1 / - W5TVC - / - 2 Partial capture
10-18 04:35 40m -9 / - W8SFN - / - 2 Partial capture
10-18 04:32 40m 0 / - KK4JO - / - 2 ✓ Closing fragment
10-18 04:26 40m -4 / - WB5TUF - / - 2 Partial capture
10-18 04:24 40m -5 / - EA1MU - / - 3 ✓ Closing fragment
10-18 04:23 40m -9 / - RA5O +4 / - 4 ✓ Full exchange observed
10-18 04:20 40m -5 / - W4DAF - / - 3 Partial capture
10-18 04:19 40m 0 / - OH7UE - / - 2 Partial capture
10-18 04:13 40m 0 / - ND9M - / - 2 Partial capture
10-18 04:12 40m 0 / - OH4NDU - / - 2 Partial capture
10-18 04:10 40m +2 / - R7DX - / - 2 Partial capture
10-18 04:08 40m +1 / - KB5YNF - / -18 3 ✓ Closing fragment
10-18 04:07 40m -3 / - W8BJF - / - 2 Partial capture
10-18 04:04 40m 0 / - R7ZL - / - 3 Partial capture
10-18 04:03 40m -1 / - UA3VFL -19 / - 4 ✓ Closing observed
10-18 03:59 40m -1 / - N1NRL - / -11 5 Partial capture
10-18 03:57 40m -5 / - WV5A - / - 3 Partial capture
10-18 03:56 40m -4 / - KS0USA - / - 2 Partial capture
10-18 03:53 40m -3 / - TA5DOB - / - 3 Partial capture
10-18 03:48 40m -3 / - DL5DQZ - / - 3 Partial capture
10-18 03:43 40m -1 / - KR4EOD - / - 2 Partial capture
10-18 03:41 40m -7 / -12 RA8AF -18 / -8 2 Partial capture
10-18 03:24 40m - / -13 RA8AF -14 / - 2 ✓ Closing fragment
10-18 03:20 40m - / -10 EA4EQ -20 / - 2 Partial capture
10-18 01:09 40m - / -2 MI0NWA -6 / - 2 ✓ Closing fragment
10-18 00:58 40m - / -4 RW3WX -10 / - 2 ✓ Closing fragment
10-18 00:12 40m - / -15 M7MFS -12 / - 3 ✓ Closing fragment
10-17 23:37 40m - / -8 TA2VUZ -11 / - 2 ✓ Closing fragment
10-17 23:29 40m - / -10 A61DD -13 / - 2 Partial capture
10-17 21:47 40m - / -15 EA7LZ -21 / - 2 ✓ Closing fragment
10-17 21:42 80m -5 / - YO3HUI - / - 3 Partial capture
10-17 21:38 80m +1 / -10 G0HSP -8 / - 9 Partial capture
10-17 21:37 80m 0 / -10 DO5PY -9 / -9 5 ✓ Full exchange observed
10-17 21:36 80m - / - DL9PN -8 / - 3 Partial capture
10-17 21:34 80m -3 / -4 T77RN +8 / -12 4 ✓ Full exchange observed
10-10 08:25 40m -2 / - OS5U - / +2 3 ✓ Closing fragment
10-10 08:23 40m +2 / - DJ2MS - / +8 3 ✓ Closing fragment
10-10 08:22 40m 0 / -8 S53AK -8 / - 5 ✓ Full exchange observed
10-10 08:20 40m -3 / - LY1SR - / - 3 Partial capture
10-10 08:18 40m 0 / - F5NQW - / -6 5 ✓ Closing fragment
10-10 08:16 40m 0 / - OZ6NC - / -17 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
045030 -12 1536  KJ5ORI DF8RU 73
045200 -18 1536  CQ DF8RU JN68 (x3)
045700 -19 1536  TI5GAX DF8RU JN68
045830 -23 1536  R3XDT DF8RU JN68
045945 -16 1537  DF8RU R3XDT -15 (x3)
050215 -14 1317  DF8RU UY0HY +01 (x2)
223815 -15 1536  BV2NF DF8RU JN68 (x3)
224015 -20 1535  9V1YC DF8RU JN68
80m 
UTC    dB Audio  Message
213800  -8 2302  DF8RU DO5PY R-10
213815  +0 1502  DO5PY DF8RU RR73
213830 -10 2302  DF8RU DO5PY 73
213845  -3 1502  G0HSP DF8RU JN68
213900  -6 2122  DF8RU G0HSP -10
213915  +3 1502  G0HSP DF8RU R+12
213930  -9 2122  DF8RU G0HSP -10
213945  -5 1501  G0HSP DF8RU R+12 (x5)
214215  -4 1502  YO3HUI DF8RU JN68 (x3)
20m 
UTC    dB Audio  Message
101345 +14 1570  RM6OG DF8RU JN68
101400  -6 2088  DF8RU RM6OG +01 (x2)
101445 +18 1570  RM6OG DF8RU R+04 (x2)
101530  -8 2089  DF8RU RM6OG RR73
101545 +16 1570  RM6OG DF8RU 73
101615 +14 1570  M0LAD DF8RU JN68 (x2)
101700  -9 1570  DF8RU M0LAD -05
101715 +14 1570  M0LAD DF8RU JN68
101730 -10 1569  DF8RU M0LAD -05
101745 +16 1570  M0LAD DF8RU JN68
101800 -16 1569  DF8RU M0LAD -05
154500 -10  479  DF8RU EA1ARJ IN73

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

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