UA9JCH — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

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. 116 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 10m, across 11 UTC dates in the available aggregate history. Observed between 2026-09-05 and 2026-11-05.

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 116 FT8 messages attributed to UA9JCH as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (54%), followed by 160 m (31%) and 10 m (12%). Most decodes (80%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (68%); the estimated median was -19 dB.

Overview

116

Messages attributed

UTC dates decoded

Active 15-min windows

-19 dB

Estimated median S/N

Bands

160m · 36 80m · 63 40m · 3 10m · 14

First attributed message: 2026-09-05
Last attributed message: 2026-11-05 15:13 UTC

Observed FT8 message patterns

Attributed sample: 116 messages
Active dates: 11 UTC dates
Estimated median S/N: -19 dB
Estimated 10th-90th percentile: -24 to -7 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 79, moderate (-15 to -9 dB) 21, strong (≥ -8 dB) 16.

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.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with UA9JCH in decoded directed-looking exchanges:

R2HM · European Russia ×2 RM5F · European Russia ×2 RN3TT · European Russia ×2 RU4I · European Russia ×2 RD5D · European Russia ×2 OH6RE · Finland ×2 R1WBW · European Russia ×2 A61FJ · United Arab Emirates ES3TI · Estonia LA9GX · Norway LZ1KU · Bulgaria OZ6FH · Denmark

Attributed messages by UTC hour

Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.

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 · 51 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 3,349 km (approx.)
Last such locator decoded: 2026-11-01 18:08 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
11-05 15:12	80m	- / -	UA0SR	-24 / -	2	Partial capture
11-05 15:11	80m	-16 / -14	R5ACQ	-13 / -5	9	✓ Full exchange observed
11-05 15:10	80m	- / -	SP5AA	+14 / -	3	Partial capture
11-05 15:08	80m	- / -	R5ACQ	-3 / -	3	Partial capture
11-05 15:08	80m	- / -10	UA6HJT	-3 / -	3	✓ Closing fragment
11-04 13:22	80m	- / -	RA4FP	-14 / -	2	✓ Closing fragment
11-04 13:18	80m	- / -12	RA4FP	-24 / -	2	Partial capture
11-04 13:18	80m	- / -7	RD5D	-4 / -	3	✓ Closing fragment
11-01 19:02	80m	- / -16	R6YY	-7 / -	2	Partial capture
11-01 18:07	80m	-14 / -24	Z62NS	-10 / -	5	Partial capture
11-01 17:52	160m	- / -20	OZ6FH	-3 / -	6	✓ Closing fragment
11-01 17:31	160m	- / -	F4EZJ	+8 / -	2	Partial capture
11-01 03:15	40m	- / -16	RD5D	-17 / -	2	✓ Closing fragment
10-31 18:25	40m	- / -	DK3JW	-2 / -	4	Partial capture
10-31 17:15	40m	- / -	R3YAF	-1 / -	3	Partial capture
10-31 15:40	160m	- / -	R3ZMM	-21 / -	2	Partial capture
10-29 18:34	160m	- / -	LA9GX	+8 / -	5	✓ Closing fragment
10-29 16:02	160m	- / -4	LZ1KU	-6 / -	2	✓ Closing fragment
10-28 19:26	160m	- / -	RW4HD	-5 / -	3	Partial capture
10-28 19:24	160m	- / -19	RZ1OK	-8 / -	3	Partial capture
10-28 19:20	160m	- / -14	SM0CXS	-2 / -	4	✓ Closing fragment
10-28 19:11	160m	- / -17	RZ1OK	-16 / -	2	Partial capture
10-28 18:52	160m	- / -8	SM2LIY	-2 / -	2	✓ Closing fragment
10-28 03:56	40m	- / -21	ES2AJ	-14 / -	2	Partial capture
10-28 03:56	40m	- / -16	R2BQM	-7 / -	5	✓ Closing fragment
10-28 03:49	40m	- / -	R2AL	+13 / -	3	Partial capture
10-28 03:43	40m	- / +1	R2AL	+9 / -	4	Partial capture
10-28 03:28	80m	-14 / -	PA3EVY	+2 / -10	3	✓ Closing observed
10-25 19:48	80m	- / -	R5AT	-6 / -	2	Partial capture
10-25 18:46	160m	- / -15	R2HB	-20 / -	2	✓ Closing fragment
10-25 18:41	160m	- / -10	RL3FA	+3 / -	2	Partial capture
10-25 16:15	160m	- / -	SP3SLA	+18 / -	2	Partial capture
10-25 15:36	160m	- / -7	RC9F	-8 / -	2	✓ Closing fragment
10-24 15:43	160m	- / -	RA9AJ	-10 / -	2	Partial capture
10-22 18:05	160m	- / -8	R4DI	-17 / -	2	Partial capture
10-22 18:02	160m	- / -10	R4LBP	-22 / -	2	✓ Closing fragment
10-21 18:27	160m	- / -17	R4RJ	-10 / -	2	✓ Closing fragment
10-21 16:20	160m	- / -	E73S	+6 / -	2	Partial capture
10-20 15:32	40m	- / -	OK1UG	+1 / -	4	Partial capture
10-20 15:32	40m	- / -	RT6Z	0 / -	2	Partial capture
10-20 15:28	40m	- / -11	R3KJF	-4 / -	3	✓ Closing fragment
10-20 15:24	40m	- / -	F4EAR	+2 / -	2	Partial capture
10-20 15:07	40m	- / -13	R4ADJ	-20 / -	2	✓ Closing fragment
10-20 09:34	10m	-18 / -	9A2RD	- / -	2	Partial capture
10-19 19:35	160m	- / -	IK6QOP	-1 / -	2	Partial capture
10-18 18:43	160m	- / -19	R6FFB	-7 / -	5	Partial capture
10-18 18:41	160m	- / -	LZ3YY	-12 / -	4	Partial capture
10-18 17:56	160m	- / -	R2EC	-16 / -	4	Partial capture
10-18 17:50	160m	- / -	RJ6B	+4 / -	3	Partial capture
10-17 17:16	160m	- / -	R2EC	-16 / -	4	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
151015 -24 1197  R0SBH UA9JCH RR73
151030  +9 1851  UA9JCH SP5AA JO92 (x2)
151115 -19 1196  R5ACQ UA9JCH -05
151130 +12 1851  UA9JCH SP5AA JO92
151130  -7 2288  UA9JCH R5ACQ R-14
151145 -17 1196  R5ACQ UA9JCH -05
151200  -2 2288  UA9JCH R5ACQ R-14
151230 -24 2206  UA9JCH UA0SR OO22
151230 -21 2288  UA9JCH R5ACQ R-08
151245 -12 1197  R5ACQ UA9JCH -05
151300 -24 2206  UA9JCH UA0SR OO22
151300 -10 1196  UA9JCH R5ACQ R-12
151315 -14 1196  R5ACQ UA9JCH RR73
151330 -23 1197  UA9JCH R5ACQ 73

160m

UTC    dB Audio  Message
183500  +5 2493  UA9JCH LA9GX RR73 (x4)
170730 -21 2075  UA9JCH RA3SI -19
154030 -21 2157  UA9JCH R3ZMM KO90 (x2)
173100 +13  528  UA9JCH F4EZJ JN05 (x2)
175230  -6 1990  UA9JCH OZ6FH JO47 (x6)

40m

UTC    dB Audio  Message
035700  -5 1131  UA9JCH R2BQM -16 (x3)
040600 -20 1662  UA9JCH R4WZ -19 (x2)
171515  -6 2628  UA9JCH R3YAF KO62 (x3)
182530  -1 1870  UA9JCH DK3JW JN67 (x4)
031530 -16 1039  UA9JCH RD5D R-16 (x2)
032800 -18 1220  UA9JCH R3XBS -16

10m

UTC    dB Audio  Message
072300 -24 1868  IT9ACJ UA9JCH R-02 (x2)
072500 -23 1868  9A7W UA9JCH MP61
093415  -6 2776  E22CTF UA9JCH +08 (x6)
101845 -17  825  UA9JCH IT9VCE -23 (x2)
092945 -23 1784  OM1FED UA9JCH MP61
093445 -17 1782  9A2RD UA9JCH +15 (x2)
073145 -12 1188  CQ UA9JCH MP61

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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