JH4NDG — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Japan

Receiver-side FT8 activity involving JH4NDG, decoded by SO8OO in southeastern Poland. 47 related FT8 messages, observed on 20m, 10m, across 13 UTC dates. Heard between 2026-05-16 and 2026-07-28.

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.

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

Overview

Related messages

CQ messages

UTC dates heard

-1 dB

Mean decoder S/N

Bands

20m 10m

First seen: 2026-05-16
Last seen: 2026-07-28 18:53 UTC

Frequent QSO partners observed at SO8OO

Stations JH4NDG worked most often, as logged from our receiver:

IT9EJW · Sicily EA5RR · Spain A61QQ · United Arab Emirates IS0AEL · Sardinia EX8ABR/P · Kyrgyzstan 9A5E · Croatia EA8UP · Canary Islands OK1KKI · Czech Republic PI4DX · Netherlands DL3MIB · Fed. Rep. of Germany

Activity Heatmap

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	JH4NDG S/N	Counterpart	Counterpart S/N	Msgs	Capture
07-28 20:50	20m	- / -17	F8AGD	+18 / -	6	Partial capture
07-28 20:37	20m	- / -21	PI4DX	+16 / -	2	✓ Closing fragment
07-28 20:29	20m	- / -14	9A5E	-4 / -	4	✓ Closing fragment
07-26 21:37	20m	- / -15	DL3MIB	+1 / -	5	✓ Closing fragment
07-22 21:06	20m	- / -25	RA3ZH	-8 / -	4	Partial capture
07-22 21:06	20m	- / -17	EA5RR	-4 / -	2	✓ Closing fragment
07-18 20:23	20m	- / -24	OK1KKI	+18 / -	2	✓ Closing fragment
07-16 22:01	20m	- / -17	EC5K	+7 / -	2	Partial capture
07-16 21:52	20m	- / -25	IS0AEL	-18 / -	2	✓ Closing fragment
07-14 21:54	20m	- / -17	EA8UP	-2 / -	4	✓ Closing fragment
07-13 20:32	20m	- / -22	IT9EJW	-14 / -	2	✓ Closing fragment
06-26 20:38	20m	- / -11	S57ESG	-15 / -	2	Partial capture
06-23 21:27	20m	- / -16	5Z4VJ	-11 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
213815  +4 1107  JH4NDG DL3MIB R-15 (x3)
202945  -6 1209  JH4NDG 9A5E R-14 (x4)
203715 +16 1008  JH4NDG PI4DX R-21 (x2)
205045 +17  400  JH4NDG F8AGD R-17 (x6)

10m

UTC    dB Audio  Message
083545 -11 1593  JH4NDG LZ2CP KN23

Decoder S/N history by band

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