JI1UMC — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Japan

Receiver-side FT8 activity involving JI1UMC, decoded by SO8OO in southeastern Poland. 110 related FT8 messages, observed on 80m, 20m, 10m, across 25 UTC dates. Heard between 2026-05-22 and 2026-08-19.

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.

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Overview

110
Related messages
0
CQ messages
25
UTC dates heard
-6 dB
Mean decoder S/N

Bands

80m 20m 10m
First seen: 2026-05-22
Last seen: 2026-08-19 21:37 UTC

Frequent QSO partners observed at SO8OO

Stations JI1UMC worked most often, as logged from our receiver:

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 UTCBandJI1UMC S/NCounterpartCounterpart S/NMsgsCapture
08-17 17:37 80m - / -22 YO4NT +2 / - 2 ✓ Closing fragment
08-17 17:14 80m - / -15 UT5ZC 0 / - 2 ✓ Closing fragment
08-17 13:51 20m - / -10 ON4AOI -12 / - 2 ✓ Closing fragment
08-17 13:37 20m - / -7 M8KKH -7 / - 3 ✓ Closing fragment
08-17 13:31 20m - / -10 G3VCQ -6 / - 2 ✓ Closing fragment
08-13 17:09 80m - / - RY7F -13 / - 5 Partial capture
08-13 17:03 80m - / -24 R3RB -10 / - 6 Partial capture
08-13 17:00 80m - / -20 UA3ZUX +6 / - 4 ✓ Closing fragment
08-11 16:56 20m - / -20 OK4SD +8 / - 6 ✓ Closing fragment
08-07 15:13 20m - / - ON7NQ -6 / - 3 Partial capture
08-07 15:09 20m - / - ON7NQ -6 / - 2 Partial capture
08-05 11:37 20m - / -12 R4FDW -19 / - 8 Partial capture
08-05 11:25 20m - / -10 R4FDW -16 / - 2 Partial capture
07-26 15:05 20m - / - F4IBJ -1 / - 5 Partial capture
07-20 19:09 20m - / - UF5F -6 / - 2 Partial capture
07-20 19:08 20m - / -12 DK1MAX +3 / - 2 ✓ Closing fragment
06-20 13:29 20m - / -7 LA1PHA -2 / - 2 ✓ Closing fragment
06-17 00:14 20m - / -16 TN8GD +7 / - 4 ✓ Closing fragment
06-16 17:29 20m -8 / - 4U1WB - / -23 2 Partial capture
06-13 07:56 10m - / -15 <...> -9 / - 2 Partial capture
06-09 14:11 20m - / -14 GM4FDM -6 / - 2 ✓ Closing fragment
06-07 16:33 20m - / -11 Z62NS -17 / - 4 ✓ Closing fragment
06-03 15:11 20m - / -19 TA2GG -15 / - 5 ✓ Closing fragment
06-01 16:32 20m -14 / - IQ9BF - / - 10 Partial capture
06-01 16:30 20m -10 / - 7Z1IS -19 / - 3 ✓ Closing observed
06-01 16:26 20m -14 / - SM6CWP - / -23 3 Partial capture
06-01 16:21 20m - / -11 RG2V -6 / - 5 Partial capture
06-01 16:21 20m - / - US3EW 0 / - 2 Partial capture
06-01 16:16 20m -12 / - DH1NGL - / -25 3 Partial capture
06-01 16:12 20m -7 / - OE6BMG - / -15 6 Partial capture
06-01 16:09 20m - / - UA3FO -14 / - 2 Partial capture
06-01 16:06 20m -5 / -9 HB10GBT +4 / -9 5 Partial capture
06-01 15:48 20m -10 / - IS0LBE - / - 15 Partial capture
06-01 14:47 10m - / -9 7Q9PTP -14 / - 2 ✓ Closing fragment
05-29 15:30 20m -8 / - LA8ENA - / - 2 Partial capture
05-27 09:32 10m - / -12 9J2FI +6 / - 2 ✓ Closing fragment
05-26 11:26 10m - / -5 9J2FI +2 / - 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
165645  +2 2552  JI1UMC OK4SD JN79 (x6)
182515  -4 2628  JI1UMC MI0JZZ RR73
133130 -10 2017  JI1UMC G3VCQ -10 (x2)
133700 -10 2153  JI1UMC M8KKH -07 (x3)
135100 -12 2406  JI1UMC ON4AOI -10 (x2)
233730  -8  601  JI1UMC TJ1GD RR73
80m 
UTC    dB Audio  Message
170315 -13 1600  JI1UMC R3RB -24 (x6)
170915  -9 1535  JI1UMC RY7F LN04 (x5)
171415  -2 1505  JI1UMC UT5ZC -15 (x2)
173715  +2 1103  JI1UMC YO4NT -22 (x2)
10m 
UTC    dB Audio  Message
112615  -1 2832  JI1UMC 9J2FI -05 (x4)
144700 -14 2059  JI1UMC 7Q9PTP -09 (x2)
145615 -18 1572  JI1UMC 7Z1GC RR73
075600 -10 1684  JI1UMC <...> -15 (x2)

Decoder S/N history by band

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