JA4TKY — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Japan Locator transmitted in a decoded message: PM75

Receiver-side FT8 activity involving JA4TKY, decoded by SO8OO in southeastern Poland. 262 related FT8 messages, observed on 80m, 40m, 20m, 10m, across 22 UTC dates. Heard between 2026-05-27 and 2026-08-23.

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

262

Related messages

CQ messages

UTC dates heard

-6 dB

Mean decoder S/N

Bands

80m 20m 40m 10m

First seen: 2026-05-27
Last seen: 2026-08-23 11:49 UTC

Frequent QSO partners observed at SO8OO

Stations JA4TKY worked most often, as logged from our receiver:

9A3EYA · Croatia ×2 HA1RB · Hungary IK0QDM · Italy PD3AFI · Netherlands CX1AAX · Uruguay RA3QH · European Russia OK2PSC · Czech Republic Z31R · North Macedonia R3BDQ · European Russia LY1DY · Lithuania SP6JIU · Poland EG5PLN · Spain

Activity Heatmap

Locator transmitted by JA4TKY

Approximate centre of PM75, decoded 2026-08-22 20:39 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	JA4TKY S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-22 20:38	40m	-14 / -6	T77R	-2 / -	4	✓ Closing observed
08-22 20:32	40m	-13 / -9	PD0IFI	+3 / -15	6	✓ Full exchange observed
08-22 20:29	40m	- / -5	LY1DY	-9 / -	3	✓ Closing fragment
08-22 20:27	40m	-13 / -	YD8VJI	- / -13	2	✓ Closing fragment
08-22 20:24	40m	- / -	PD0LBY	-20 / -	2	Partial capture
08-22 20:23	40m	- / -16	9A3EYA	-3 / -	5	✓ Closing fragment
08-22 20:23	40m	- / -12	OZ3MC	-10 / -	4	✓ Closing fragment
08-22 20:19	40m	-14 / -	PB7TT	- / -26	3	Partial capture
08-22 20:19	40m	- / -9	RA3APK	-19 / -	3	Partial capture
08-22 20:17	40m	-12 / +7	SP6JIU	+18 / -2	3	✓ Full exchange observed
08-22 20:15	40m	- / -	DL1ESZ	-4 / -	2	Partial capture
08-15 17:29	20m	-21 / -	PD5GO	- / -24	2	✓ Closing fragment
08-15 17:21	20m	-18 / -17	CR5VP	-16 / -	3	✓ Closing observed
08-10 22:28	20m	- / -	IZ1JIZ	-20 / -	2	Partial capture
08-10 21:18	40m	- / -	EA3NE	-15 / -	4	Partial capture
08-10 21:17	40m	- / -	LB7ZG	-8 / -	2	Partial capture
08-10 21:16	40m	- / -9	RZ3EC	-6 / -	2	✓ Closing fragment
08-10 21:06	40m	- / -	ON5RZ	-13 / -	3	Partial capture
08-10 20:55	40m	- / -	ON5RZ	-4 / -	2	Partial capture
08-10 20:51	40m	- / -11	IK0QDM	-20 / -	4	✓ Closing fragment
08-10 20:49	40m	- / -	ON5RZ	-6 / -	2	Partial capture
08-10 20:47	40m	- / -	DF4LB	-19 / -	2	Partial capture
08-10 20:47	40m	- / -18	DL4RAQ	+2 / -	3	✓ Closing fragment
08-10 20:47	40m	- / -	LB7ZG	-6 / -	2	Partial capture
08-10 20:32	40m	- / -	DF8AA	-7 / -	3	Partial capture
08-10 20:32	40m	- / -15	OE8DDX	-6 / -	5	Partial capture
08-10 20:32	40m	- / -	PD1EN	-20 / -	2	Partial capture
08-10 20:30	40m	- / -18	F4JTM	0 / -	2	✓ Closing fragment
08-10 20:08	80m	- / -	DK3ME	-5 / -	8	Partial capture
08-10 20:07	80m	- / -	SV9MBH	-19 / -	3	Partial capture
08-10 20:07	80m	- / -15	UR1CCT	+15 / -	3	✓ Closing fragment
08-09 14:09	20m	- / -	ON8BB	-2 / -	2	Partial capture
07-24 20:11	20m	-12 / -5	RA3QH	-6 / -	3	✓ Closing observed
07-24 20:02	20m	-14 / -19	M9MAS	-5 / -21	8	Partial capture
07-24 17:23	20m	-20 / -	BA4UFM	- / -18	2	✓ Closing fragment
07-24 17:21	20m	-21 / +1	S57AM	-12 / -	4	✓ Closing observed
07-24 17:07	20m	- / -	MM0JTV	-17 / -	2	Partial capture
07-24 17:06	20m	-20 / -	E25KAE	- / -19	2	✓ Closing fragment
07-24 14:28	20m	- / +3	DL1CC	-3 / -	9	Partial capture
07-24 14:19	20m	- / -	DB9LG	-6 / -	2	Partial capture
07-20 15:22	10m	- / -16	LZ1VL	-12 / -	3	✓ Closing fragment
07-13 11:49	20m	- / -16	DB5FW	-6 / -	2	Partial capture
07-08 18:06	20m	- / -	ON7DJ	-6 / -	3	Partial capture
07-08 18:03	20m	-10 / -	OE3UKW	- / -9	2	✓ Closing fragment
07-08 18:01	20m	-9 / -	OK1CYC	- / -13	2	✓ Closing fragment
07-08 17:59	20m	-4 / -	I6PJC	- / -12	2	Partial capture
07-08 17:58	20m	- / -	EA4HOT	-11 / -	2	Partial capture
07-08 17:57	20m	-7 / -	SV1EGE	- / -13	3	✓ Closing fragment
07-08 17:53	20m	-4 / -	R2BRD	- / -12	2	✓ Closing fragment
07-08 17:49	20m	-2 / -	EA4GA	- / -16	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

10m

UTC    dB Audio  Message
153930 -22 1736  JA4TKY HZ1SK -21
085915  -1  906  JA4TKY A61CK -05 (x2)
121915  -8 1203  JA4TKY A61DD +03 (x2)
152245 -16 2198  JA4TKY LZ1VL R-16 (x3)
134900 -24 1594  JA4TKY T77R -08

40m

UTC    dB Audio  Message
202930  -7 1135  JA4TKY LY1DY R-05 (x2)
203200  +0  732  JA4TKY PD0IFI JO32
203215 -12 1135  PD0IFI JA4TKY -15 (x2)
203300  +4  732  JA4TKY PD0IFI R-09
203315 -12 1136  PD0IFI JA4TKY RR73
203330  +4  732  JA4TKY PD0IFI 73
203515 -14 1135  SV1MOZ JA4TKY -22
203545 -14 1136  T77R JA4TKY PM75 (x3)
203930  -5 1739  JA4TKY T77R -06 (x2)
204115 -15 1136  UT8SQ JA4TKY -17

20m

UTC    dB Audio  Message
220545 -18 1029  EA3HKD JA4TKY 73
221130  -2 2867  JA4TKY SP1LON -09
221330 -18 1019  PD5MVH JA4TKY 73
222845 -20 1837  JA4TKY IZ1JIZ JN44 (x2)
224930  -3  974  JA4TKY EA3NE JN11
171145 -21 1472  LZ1SJ JA4TKY R-18
171515 -23 1472  CX1AAX JA4TKY 73
172115 -16 1276  JA4TKY CR5VP -17 (x2)
172200 -18 1311  CR5VP JA4TKY 73
172930 -22 1309  PD5GO JA4TKY -24 (x2)
173600 -17 1310  IK2WSA JA4TKY -17
143300 -10 1644  OK2CNI JA4TKY 73

80m

UTC    dB Audio  Message
200115 +11 1094  JA4TKY UR1CCT KN69
200745 -19 1433  JA4TKY SV9MBH KM25
200745 +14 1094  JA4TKY UR1CCT KN69
200815 -19 1433  JA4TKY SV9MBH KM25
200815  -7 1917  JA4TKY DK3ME JO50
200815 +14 1094  JA4TKY UR1CCT R-15
200845 -20 1433  JA4TKY SV9MBH KM25
200845  -5 1918  JA4TKY DK3ME JO50
200845 +16 1094  JA4TKY UR1CCT 73
200915  -5 1918  JA4TKY DK3ME JO50 (x6)

Decoder S/N history by band

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