PY4KU — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Brazil Locator transmitted in a decoded message: GH70

Receiver-side FT8 activity involving PY4KU, decoded by SO8OO in southeastern Poland. 235 related FT8 messages, 125 CQ messages, observed on 20m, 10m, across 13 UTC dates. Heard between 2026-04-21 and 2026-06-28.

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.

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Overview

235

Related messages

125

CQ messages

UTC dates heard

-6 dB

Mean decoder S/N

Bands

20m 10m

First seen: 2026-04-21
Last seen: 2026-06-28 20:01 UTC

Frequent QSO partners observed at SO8OO

Stations PY4KU worked most often, as logged from our receiver:

UN7PNF · Kazakhstan R8KBH · Asiatic Russia SP5TZZ · Poland RI0SP · European Russia OZ1BW · Denmark BH4HGH · China EA5L · Spain

Activity Heatmap

Locator transmitted by PY4KU

Approximate centre of GH70, decoded 2026-06-14 01:40 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	PY4KU S/N	Counterpart	Counterpart S/N	Msgs	Capture
06-28 22:01	20m	- / -18	EA5L	-11 / -	2	✓ Closing fragment
06-28 20:55	20m	- / -10	R5AV	-20 / -	2	Partial capture
06-14 20:23	20m	- / -26	EW4IDP	+10 / -	2	Partial capture
06-14 01:23	20m	- / -	DG5LEO	-6 / -	5	Partial capture
06-12 22:01	20m	- / -12	R5AV	+3 / -	7	Partial capture
06-12 21:56	20m	- / -19	R5AV	+6 / -	2	Partial capture
06-12 21:53	20m	- / -	F5NZ	+8 / -	2	Partial capture
06-07 21:49	20m	- / -16	RI0SP	-10 / -	2	✓ Closing fragment
06-07 19:21	10m	- / -13	ON3MOH/P	-8 / -	2	Partial capture
06-07 18:34	10m	- / -	IK4LZH	0 / -	4	Partial capture
06-07 18:34	10m	- / -	M0NPT	-12 / -	2	Partial capture
06-07 18:33	10m	- / -	EB3EFU	-11 / -	2	Partial capture
06-07 18:17	10m	- / -	M0NPT	-6 / -	4	Partial capture
06-06 22:27	20m	- / -	EA1CQ	-3 / -	2	Partial capture
06-06 22:20	20m	- / -	IV3JRY	-9 / -	4	Partial capture
06-06 20:10	20m	- / -25	EA1CQ	-5 / -	5	Partial capture
06-04 21:12	20m	- / -12	UN7PNF	+7 / -	4	✓ Closing fragment
06-04 21:11	20m	- / -8	R8KBH	-9 / -	5	✓ Closing fragment
06-04 21:07	20m	- / -14	OZ1BW	+2 / -	5	✓ Closing fragment
06-04 21:03	20m	- / -	PA3FMK	-9 / -	2	Partial capture
06-04 21:00	20m	- / -7	BH4HGH	-9 / -	4	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
012415  -7  930  PY4KU DG5LEO JO31 (x3)
012830 -24 1579  CQ PY4KU GH70                         a1 (x5)
202315 +12  695  PY4KU EW4IDP KO13 (x2)
205545 -22 1575  PY4KU R5AV -10
205715 -15 1823  PY4KU EA3AAY JN11
205745 -19 1575  PY4KU R5AV -16
220115 -13 1332  PY4KU EA5L -18 (x2)

10m

UTC    dB Audio  Message
181745  -5  492  PY4KU M0NPT IO92 (x3)
183045  -9  819  PY4KU EB3EFU JN12 (x3)
183415  -9  491  PY4KU M0NPT IO92
183415  -5  588  PY4KU IK4LZH JN54
183445 -15  490  PY4KU M0NPT IO92
183445  +2  588  PY4KU IK4LZH JN54 (x3)
192145 -10  491  PY4KU ON3MOH/P JO10 (x2)
184730 -23 1596  PY4KU R7KJM KN75

Decoder S/N history by band

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