JR3IIR — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Japan Locator transmitted in a decoded message: PM74

Receiver-side FT8 activity involving JR3IIR, decoded by SO8OO in southeastern Poland. 37 related FT8 messages, 1 CQ messages, observed on 20m, 10m, across 5 UTC dates. Heard between 2026-05-13 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

Related messages

CQ messages

UTC dates heard

-11 dB

Mean decoder S/N

Bands

20m 10m

First seen: 2026-05-13
Last seen: 2026-08-07 19:59 UTC

Frequent QSO partners observed at SO8OO

Stations JR3IIR worked most often, as logged from our receiver:

R4FDW · European Russia DL2PS · Fed. Rep. of Germany BI1OIY · China RZ4FWA · European Russia M9KJY · England OZ1LGJ · Denmark DL3JHK · Fed. Rep. of Germany 7Z1CH · Saudi Arabia DL6MRM · Fed. Rep. of Germany LB1UK · Norway A92AB · Bahrain OK1DVN · Czech Republic

Activity Heatmap

Locator transmitted by JR3IIR

Approximate centre of PM74, decoded 2026-08-07 21:57 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	JR3IIR S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-07 21:59	20m	- / -	M8KUG	-7 / -	2	Partial capture
08-07 21:56	20m	-14 / -	DB1BW	- / -	2	Partial capture
08-07 21:56	20m	-12 / -	DL3JHK	-14 / -18	4	✓ Closing observed
08-07 21:54	20m	-15 / -	UI6O	- / -8	2	Partial capture
08-07 21:52	20m	- / -	G0OYR	-6 / -	2	Partial capture
08-07 21:48	20m	-9 / -	DL6MRM	- / -4	3	✓ Closing fragment
08-07 21:47	20m	-6 / -1	DL2PS	-10 / -15	3	✓ Full exchange observed
08-07 21:45	20m	-4 / -15	M9KJY	-4 / -	4	✓ Closing observed
08-07 21:42	20m	-12 / -	OZ1LGJ	-22 / -8	5	✓ Closing observed
08-07 21:40	20m	-12 / -	RZ4FWA	- / -15	2	✓ Closing fragment
08-07 21:37	20m	-13 / -	7Z1CH	- / -14	3	✓ Closing fragment
08-07 21:34	20m	-11 / -	BI1OIY	- / -18	2	✓ Closing fragment
07-17 12:37	20m	- / -7	LB1UK	-18 / -	2	✓ Closing fragment
06-08 20:35	10m	- / -8	LU3JP	-9 / -	2	Partial capture
06-08 15:26	10m	- / -11	A92AB	-24 / -	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
214945  -7 2283  DL6MRM JR3IIR 73
215045  -8 2283  IW5ABF JR3IIR -17
215200  -7  811  JR3IIR G0OYR IO92 (x2)
215415 -15 1370  UI6O JR3IIR PM74 (x2)
215615 -11 1167  DL3JHK JR3IIR PM74
215645 -14 1907  DB1BW JR3IIR PM74 (x2)
215745 -11 1168  DL3JHK JR3IIR R-18
215800 -14 1167  JR3IIR DL3JHK RR73
215815 -15 1169  DL3JHK JR3IIR 73
215900  -7 2311  JR3IIR M8KUG IO81
215900 -23 1818  JR3IIR EA5JNN IM99
215930  -7 2311  JR3IIR M8KUG IO81

10m

UTC    dB Audio  Message
152630 -24 1605  JR3IIR A92AB -11 (x2)
203515  -9 1518  JR3IIR LU3JP -08 (x2)

Decoder S/N history by band

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