R4DR — 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: European Russia Most frequent locator attributed to this token: LO32

Receiver-side FT8 activity involving R4DR, decoded by SO8OO in southeastern Poland. 58 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 11 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-11-01.

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 58 FT8 messages attributed to R4DR as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (52%), followed by 40 m (43%) and 10 m (5%). Several six-hour UTC windows tied for the largest share (95%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-12 dB

Estimated median S/N

Bands

40m · 25 20m · 30 10m · 3

First attributed message: 2026-06-11
Last attributed message: 2026-11-01 04:28 UTC

Observed FT8 message patterns

Attributed sample: 58 messages
Active dates: 11 UTC dates
Estimated median S/N: -12 dB
Estimated 10th-90th percentile: -22 to +1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 22, moderate (-15 to -9 dB) 15, strong (≥ -8 dB) 21.

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 R4DR in decoded directed-looking exchanges:

PV8AJ · Brazil

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 R4DR

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: LO32 · 47 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,769 km (approx.)
Last such locator decoded: 2026-11-01 04:23 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 UTC	Band	R4DR S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-01 04:26	40m	-20 / -11	PY2UBK	-15 / -14	4	Partial capture
11-01 04:23	40m	-21 / -10	PV8AJ	-13 / -	3	✓ Closing observed
09-18 01:07	40m	-4 / -	PT7YB	- / -	2	Partial capture
09-13 03:07	40m	-9 / -	PY2DV	- / -	2	Partial capture
09-13 03:00	40m	-8 / -	D44TWO	- / -	2	Partial capture
09-13 02:54	40m	-9 / -	D44TWO	- / -	3	Partial capture
08-25 03:48	20m	-1 / -	XE2V	- / -	3	Partial capture
08-25 03:45	20m	0 / -	<...>	- / -11	3	Partial capture
08-25 03:22	20m	+3 / -	ZL2TAZ	- / -	3	Partial capture
08-25 03:19	20m	+2 / -	PR8ZX	- / -	4	Partial capture
08-10 02:31	20m	-23 / -	TT1GD	- / -10	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
030745 -10 1546  PY2DV R4DR LO32 (x2)
010700  -4 1546  PT7YB R4DR LO32 (x2)
041430 -17 1254  HK4GSO R4DR LO32
041600 -15 1252  OA4ENG R4DR LO32
042130 -17 1249  LU3CAQ R4DR LO32
042315 -21 1249  PV8AJ R4DR LO32
042330 -13 1447  R4DR PV8AJ -10 (x2)
042630 -18 1250  PY2UBK R4DR -14
042645 -14 2337  R4DR PY2UBK R-11 (x2)
042830 -21 1250  PY2UBK R4DR -14
043630 -17 2134  R4DR R3KJF KO91

20m

UTC    dB Audio  Message
023115 -24 1657  TT1GD R4DR LO32 (x2)
031945  +1 1725  PR8ZX R4DR LO32 (x4)
032230  -1 1753  ZL2TAZ R4DR LO32 (x3)
034545  +1 1732  <...> R4DR LO32 (x3)
034815  -1 1730  XE2V R4DR LO32 (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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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