UA9JCH — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Asiatic Russia Most frequent locator attributed to this token: MP61

Receiver-side FT8 activity involving UA9JCH, decoded by SO8OO in southeastern Poland. 15 FT8 messages attributed to this token as transmitter, on 80m, 40m, 10m, across 2 UTC dates in the available aggregate history. Observed between 2026-09-05 and 2026-09-06.

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 15 FT8 messages attributed to UA9JCH as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (80%), followed by 40 m (13%) and 10 m (7%). In this small sample, the estimated median decoder S/N was -18 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-18 dB

Estimated median S/N

Bands

80m · 12 40m · 2 10m · 1

First attributed message: 2026-09-05
Last attributed message: 2026-09-06 10:05 UTC

Observed FT8 message patterns

Attributed sample: 15 messages
Active dates: 2 UTC dates
Estimated median S/N: -18 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 11, moderate (-15 to -9 dB) 4, strong (≥ -8 dB) 0.

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 UA9JCH in decoded directed-looking exchanges:

RM5F · European Russia ×2 A61FJ · United Arab Emirates RN3TT · European Russia RQ3M · European Russia UA4FKT · European Russia UF3T · European Russia EW2GI · Belarus IZ0AEZ · Italy R2EA · European Russia R3RB · European Russia R3WDW · European Russia R4PFY · European Russia

Most frequent locator attributed to UA9JCH

The map compares the centres and boundaries of the locator field attributed to this token by decoded message structure, 2° × 1° as a Maidenhead square, and SO8OO's six-character receiver square. The separation is not an exact antenna-to-antenna distance or a radio-path length.

Attributed locator: MP61 · 3 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 3,349 km (approx.)
Last such locator decoded: 2026-09-05 21:50 UTC

A decoded locator can describe portable, remote or special-event operation and is not proof of a permanent station address or transmitter identity.

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	UA9JCH S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-07 17:25	40m	- / -	R6OD	+2 / -	3	Partial capture
09-07 17:21	40m	- / -	RA3UAG	-7 / -	2	Partial capture
09-07 17:18	40m	- / -	R6DZR	0 / -	2	Partial capture
09-07 17:13	40m	- / -14	IZ0AEZ	+1 / -	5	✓ Closing fragment
09-07 17:04	40m	- / -	IZ0AEZ	+2 / -	4	Partial capture
09-07 17:02	40m	- / -15	RA3WEO	0 / -	5	Partial capture
09-07 16:22	40m	- / -9	EW2GI	-5 / -	2	✓ Closing fragment
09-07 16:09	40m	- / -	R6ZEJ	+4 / -	2	Partial capture
09-07 16:04	40m	- / -17	R6CW	-4 / -	4	✓ Closing fragment
09-07 16:02	40m	- / -18	RO7A	0 / -	3	✓ Closing fragment
09-07 15:59	40m	- / -	SP5LST	-2 / -	2	Partial capture
09-07 15:57	40m	- / -	RO7A	+2 / -	6	Partial capture
09-07 15:56	40m	- / -	UB4FGK	-6 / -	2	✓ Closing fragment
09-07 15:55	40m	- / -3	RV3TV	-2 / -	3	✓ Closing fragment
09-07 15:45	80m	- / -14	RM2P	-16 / -	6	✓ Closing fragment
09-07 15:19	40m	- / -	RO7A	0 / -	8	Partial capture
09-07 15:17	40m	- / -12	R4PFY	-14 / -	4	✓ Closing fragment
09-07 15:10	40m	- / -5	RU3OW	-4 / -	5	✓ Closing fragment
09-07 14:31	40m	- / -13	R2EA	0 / -	2	✓ Closing fragment
09-07 14:26	40m	- / -10	R3WDW	-4 / -	4	✓ Closing fragment
09-07 04:25	40m	- / -17	R3RB	-15 / -	2	✓ Closing fragment
09-06 17:23	160m	- / -	RA3VX	-14 / -	3	Partial capture
09-06 17:14	160m	- / -16	RM5F	-14 / -	4	✓ Closing fragment
09-06 17:02	160m	- / -	RZ6ASO	-6 / -	4	Partial capture
09-06 16:03	160m	- / -8	UF3T	-16 / -	2	✓ Closing fragment
09-05 22:11	40m	- / -8	R1943OD	-1 / -	2	Partial capture
09-05 21:49	40m	-12 / -16	CT3HF	-20 / -	6	Partial capture
09-05 21:43	80m	- / -	F6BHK	-13 / -	3	Partial capture
09-05 21:43	80m	- / -	UB3ANV	-9 / -	2	Partial capture
09-05 21:42	80m	- / -18	RA6MQ	-6 / -	5	Partial capture
09-05 21:39	80m	- / -11	RU3XK	+2 / -	4	✓ Closing fragment
09-05 21:31	80m	-17 / -	DO8JB	- / -13	3	✓ Closing fragment
09-05 21:31	80m	-17 / -	RL3F	-11 / -3	3	✓ Closing observed
09-05 21:25	80m	-14 / -7	R7FQ	-4 / -3	4	✓ Full exchange observed
09-05 21:23	80m	- / -13	OZ7KJ/P	+2 / -	3	✓ Closing fragment
09-05 21:15	80m	- / -22	DO5HOK	-4 / -	2	Partial capture
09-05 21:15	80m	- / -	RO7A	+3 / -	4	Partial capture
09-05 21:13	80m	- / -	R2DGN	+1 / -	5	Partial capture
09-05 21:09	80m	- / -4	R6KA	-2 / -	5	✓ Closing fragment
09-05 21:08	80m	- / -	CT2FEY	-10 / -	5	Partial capture
09-05 21:07	80m	- / -14	RC2Y	+6 / -	4	✓ Closing fragment
09-05 21:06	80m	-19 / -15	DK7ZT	+6 / -9	7	✓ Full exchange observed
09-05 21:06	80m	-22 / -4	RA1N	-7 / -7	4	✓ Full exchange observed
09-05 21:06	80m	- / -	DL4KG	-12 / -	2	Partial capture
09-05 21:03	80m	- / -	DL4KG	-6 / -	2	Partial capture
09-05 21:03	80m	- / -7	SN4K	+8 / -	3	✓ Closing fragment
09-05 20:38	160m	- / -	RN3TT	-10 / -	3	✓ Closing fragment
09-05 20:20	160m	- / -13	UA1OMS	-6 / -	3	Partial capture
09-05 03:27	40m	- / -21	RY3F	-4 / -	3	✓ Closing fragment
09-04 18:26	160m	- / -	UA3AKO	+9 / -	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
171045  -3 1727  UA9JCH RA3WEO -15
171045  -8 2344  UA9JCH R1QF -15
171115  +4 2232  UA9JCH IZ0AEZ JN62 (x5)
171830  -2  877  UA9JCH R6DZR KN84
171830  -3 1450  UA9JCH IZ0AEZ 73
171900  +2  877  UA9JCH R6DZR KN84
172130  -8 1417  UA9JCH RA3UAG LO06 (x2)
172530  +0  481  UA9JCH R6OD KN87 (x3)

80m

UTC    dB Audio  Message
214315 -10  986  UA9JCH RA6MQ -18
214345 -11  407  UA9JCH UB3ANV KO88
214345  -7  987  UA9JCH RA6MQ -18
214345 -14 1199  UA9JCH F6BHK JN24
214415  -7  407  UA9JCH UB3ANV KO88
214415  -1  986  UA9JCH RA6MQ -18
214415 -13 1258  UA9JCH F6BHK JN24
214445  -7  986  UA9JCH RA6MQ -18
214445 -13 1258  UA9JCH F6BHK JN24
154500 -17 1352  UA9JCH RM2P KO93 (x6)

160m

UTC    dB Audio  Message
160300 -16 1048  UA9JCH UF3T -08 (x2)
170215  -7 1960  UA9JCH RZ6ASO KN95 (x4)
170830 -11  845  UA9JCH RM5F KO85 (x5)
172215 -19 1501  UA9JCH UA4FKT RR73
172315 -19 1141  UA9JCH RA3VX LO06 (x3)

10m

UTC    dB Audio  Message
095730 -24 1612  UA9JCH A61FJ RR73
100515 -23 1330  EA7OC UA9JCH R-14

Decoder S/N history by band

Count-weighted daily averages across messages attributed to this profiled token and successfully decoded at SO8OO, limited to the rolling 90-day UTC chart window.

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