RN4SW — 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

Receiver-side FT8 activity involving RN4SW, decoded by SO8OO in southeastern Poland. 33 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-07-05 and 2026-10-29.

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 33 FT8 messages attributed to RN4SW as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (52%), followed by 80 m (39%) and 20 m (9%). Several six-hour UTC windows tied for the largest share (52%), 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

80m · 13 40m · 17 20m · 3

First attributed message: 2026-07-05
Last attributed message: 2026-10-29 12:24 UTC

Observed FT8 message patterns

Attributed sample: 33 messages
Active dates: 4 UTC dates
Estimated median S/N: -12 dB
Estimated 10th-90th percentile: -17 to +1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 11, moderate (-15 to -9 dB) 9, strong (≥ -8 dB) 13.

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 RN4SW in decoded directed-looking exchanges:

BI3UPU · China HA6ZB · Hungary R6YG · European Russia R8CGI · Asiatic Russia R8PB · Asiatic Russia R8QA · Asiatic Russia RA9YDL · Asiatic Russia RD9T · Asiatic Russia SV1ENG · Greece UB6LUR · European Russia UB6LWX · European Russia DL9KM · Fed. Rep. of Germany

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	RN4SW S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-27 15:08	40m	-15 / -	UB8SII	- / -4	3	Partial capture
10-27 15:06	40m	- / -10	HA6ZB	+2 / -	2	✓ Closing fragment
10-27 15:06	40m	-7 / -	RD9T	-8 / -	2	✓ Closing observed
10-27 15:02	40m	-10 / +3	SV1ENG	-10 / -10	7	✓ Full exchange observed
10-27 15:02	40m	-12 / -	BI3UPU	- / -13	2	✓ Closing fragment
10-27 14:46	40m	- / +2	UB6LWX	-13 / -	2	✓ Closing fragment
10-27 14:44	40m	-17 / -4	R8QA	-19 / -	2	✓ Closing observed
10-27 14:43	40m	-18 / -	R8CGI	- / -4	2	✓ Closing fragment
08-09 22:55	80m	+2 / -6	R2FDU	+5 / -4	5	✓ Full exchange observed
08-09 22:54	80m	+1 / -12	IQ4JO	+8 / -4	4	✓ Full exchange observed
08-09 22:52	80m	-1 / -7	DL9KM	-7 / -11	6	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
150400 -10 1157  RN4SW SV1ENG KM18
150400  -9 2495  RN4SW R4UAS KO85
150415  -9 1766  SV1ENG RN4SW -10
150430 -14 1157  RN4SW SV1ENG R+03
150445 -12 1766  SV1ENG RN4SW RR73
150600  -7 1766  RD9T RN4SW RR73
150615  -8  484  RN4SW RD9T 73
150645  +2 2553  RN4SW HA6ZB R-10 (x2)
150800 -17 1765  UB8SII RN4SW -04 (x3)
122000 -23 1764  R8PB RN4SW RR73
122145 -21 1765  UB6LUR RN4SW RR73
122400 -16 1765  RA9YDL RN4SW RR73

20m

UTC    dB Audio  Message
225915 -17 1321  RK3DSW RN4SW R-06

80m

UTC    dB Audio  Message
225230  -9 1169  RN4SW DL9KM JN68 (x2)
225315  -3 1247  DL9KM RN4SW -11
225330  -4 1169  RN4SW DL9KM R-07
225345  +1 1247  DL9KM RN4SW RR73
225400  -7 1169  RN4SW DL9KM 73
225415  +1 1247  IQ4JO RN4SW -04
225430  +8 1854  RN4SW IQ4JO R-12
225445  +0 1247  IQ4JO RN4SW RR73 (x2)
225530  +6 2028  RN4SW R2FDU -06 (x2)
225615  +0 1247  R2FDU RN4SW 73 (x2)
225730  +5 2028  RN4SW R2FDU R-01

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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