R4YF — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Locator transmitted in a decoded message: LO36

Receiver-side FT8 activity involving R4YF, decoded by SO8OO in southeastern Poland. 137 related FT8 messages, 61 CQ messages, observed on 20m, across 6 UTC dates. Heard between 2026-05-15 and 2026-08-07.

These are automated observations at the SO8OO receiver, not the station's official logbook. Times are UTC. Decoder S/N describes messages received at SO8OO; inferred entity and location data may be inaccurate for portable, remote or special-event operation.

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

Overview

137

Related messages

CQ messages

UTC dates heard

-6 dB

Mean decoder S/N

Bands

20m

First seen: 2026-05-15
Last seen: 2026-08-07 13:44 UTC

Frequent QSO partners observed at SO8OO

Stations R4YF worked most often, as logged from our receiver:

PA2WCB · Netherlands DH1HF · Fed. Rep. of Germany RW2Z · European Russia RA3RDN · European Russia DL3KZA · Fed. Rep. of Germany BH4ECL · China BG6OJB · China R5AV · European Russia BG4OOO · China

Activity Heatmap

Locator transmitted by R4YF

Approximate centre of LO36, decoded 2026-08-07 15:44 UTC. A transmitted locator is not proof of the operator's permanent location.

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	R4YF S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-07 15:43	20m	-16 / -	RA3RDN	- / +3	2	✓ Closing fragment
08-07 15:39	20m	-18 / -	BG6OJB	- / -8	2	✓ Closing fragment
08-07 15:30	20m	- / +2	DL3KZA	-3 / -	3	✓ Closing fragment
08-07 15:30	20m	- / -19	R4FDW	-14 / -	12	Partial capture
08-03 08:23	20m	- / -	I4WQH	-17 / -	2	Partial capture
07-15 13:33	20m	- / -24	R3PMU	-8 / -	3	Partial capture
07-15 13:21	20m	- / 0	R5AV	-17 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
153330 -22 1944  CQ R4YF LO36
153345 -19 1236  R4YF R4FDW -19
153400 -23 1944  CQ R4YF LO36
153415 -12 1236  R4YF R4FDW -19 (x5)
153900 -18 1944  BG6OJB R4YF -08 (x2)
154100 -21 1944  CQ R4YF LO36
154200 -17 1944  BD9DM R4YF -08
154330 -13 1944  RA3RDN R4YF +03 (x2)
154430 -20 1944  CQ R4YF LO36

Decoder S/N history by band

Daily averages across messages associated with this profile as decoded at SO8OO.