YH9UA — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Indonesia

Receiver-side FT8 activity involving YH9UA, decoded by SO8OO in southeastern Poland. 2 FT8 messages attributed to this token as transmitter, on 20m, across 1 UTC dates in the available aggregate history. Last observed 2026-07-09.

These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.

SO8OO decoded 2 FT8 messages attributed to YH9UA as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The available sample contains attributed decodes on 20 m (100%). The sample is too small to infer a recurring UTC-hour or received-S/N pattern.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

S/N pattern not inferred

Bands

20m · 2

First attributed message: 2026-07-09
Last attributed message: 2026-07-09 16:46 UTC

Observed FT8 message patterns

Attributed sample: 2 messages
Active dates: 1 UTC dates
S/N summary: Too few decodes
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

WSJT-X defines S/N reports against a 2,500 Hz reference noise bandwidth. The ranges above are SO8OO receiver-side display categories, not official WSJT-X classes, transmitter-power measurements or estimates of how easy the station is to hear elsewhere. Statistics include only successful decodes on SO8OO's monitored FT8 channels; transmissions that were not decoded are absent. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with YH9UA in decoded directed-looking exchanges:

F4JCU · France F5RRS · France LZ2VQ · Bulgaria ON6AA · Belgium PI4DX · Netherlands RM4N · European Russia RZ4FWA · European Russia UR4QWW · Ukraine DK1MAX · Fed. Rep. of Germany IQ4JO · Italy OK2CLW · Czech Republic R7DX · European Russia

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	YH9UA S/N	Counterpart	Counterpart S/N	Msgs	Capture
07-12 18:10	40m	- / -24	OK2CLW	-9 / -	3	✓ Closing fragment
07-12 18:08	40m	- / -15	DK1MAX	0 / -	3	✓ Closing fragment
07-12 18:03	40m	- / -18	9A7BB	-22 / -	2	Partial capture
07-12 18:02	40m	- / -16	IQ4JO	-10 / -	3	✓ Closing fragment
07-12 15:35	20m	- / -	G0VLF	-4 / -	2	Partial capture
07-12 15:34	20m	- / -24	F4JCU	-15 / -	3	✓ Closing fragment
07-12 15:30	20m	- / -16	ON6AA	+11 / -	3	✓ Closing fragment
07-09 17:07	20m	- / -10	F5RRS	-14 / -	2	✓ Closing fragment
07-09 17:01	20m	- / -	F4LER	-18 / -	2	Partial capture
07-09 16:58	20m	- / -17	LZ2VQ	-18 / -	4	✓ Closing fragment
07-09 16:57	20m	- / -	F6AUS	-2 / -	5	Partial capture
07-09 16:53	20m	- / -	M9XSW	-20 / -	2	Partial capture
07-09 16:53	20m	- / -7	F4LER	-13 / -	2	Partial capture
07-09 16:51	20m	- / -8	RZ4FWA	-16 / -	3	✓ Closing fragment
07-09 16:50	20m	- / +7	PI4DX	+6 / -	2	✓ Closing fragment
07-09 16:47	20m	- / -8	F6AUS	-2 / -	5	Partial capture
07-09 16:46	20m	- / -	R2ZBA	-4 / -	4	Partial capture
07-09 16:46	20m	-23 / -11	UR4QWW	-18 / -12	6	✓ Full exchange observed
07-09 16:42	20m	-24 / -8	F6AUS	-4 / -13	6	Partial capture
07-09 16:35	40m	- / -	IZ5ILK	-14 / -	2	Partial capture
07-09 16:25	40m	- / -12	RA6SA	-2 / -	2	✓ Closing fragment
07-09 16:24	40m	- / -12	RW7M	-6 / -	2	✓ Closing fragment
07-09 16:11	40m	- / -	DL4FAP	-23 / -	3	Partial capture
07-09 16:03	40m	- / -13	YO8AAZ	-16 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
163545 -13  231  YH9UA IZ5ILK JN63 (x2)
180230 -10 2082  YH9UA IQ4JO JN63 (x3)
180330 -24 1759  YH9UA 9A7BB JN75 (x2)
180730 -19 1483  YH9UA SP7IIT 73
180830  +0 1855  YH9UA DK1MAX JN58 (x3)
181030 -11 1614  YH9UA OK2CLW JN99 (x3)
181630 -12 2611  YH9UA OH3EX R-10

20m

UTC    dB Audio  Message
170045  -1 1517  YH9UA F6AUS IN96 (x2)
170145 -19 1843  YH9UA F4LER JN18 (x2)
170715 -18 1880  YH9UA F5RRS R-10 (x2)
170815  -8 2602  YH9UA RM4N RR73
153030 +11 2579  YH9UA ON6AA JO11 (x3)
153400 -16 1544  YH9UA F4JCU JN16
153530  -3 2038  YH9UA G0VLF IO94
153530 -13 1544  YH9UA F4JCU R-24
153600  -4 2038  YH9UA G0VLF IO94
153600 -16 1544  YH9UA F4JCU 73

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