JA5MHD — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Japan Locator transmitted in a decoded message: PM63

Receiver-side FT8 activity involving JA5MHD, decoded by SO8OO in southeastern Poland. 2,044 related FT8 messages, observed on 80m, 60m, 40m, 20m, 10m, across 82 UTC dates. Heard between 2026-05-25 and 2026-08-23.

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

2,044
Related messages
0
CQ messages
82
UTC dates heard
-1 dB
Mean decoder S/N

Bands

80m 20m 40m 60m 10m
First seen: 2026-05-25
Last seen: 2026-08-23 18:05 UTC

Frequent QSO partners observed at SO8OO

Stations JA5MHD worked most often, as logged from our receiver:

Activity Heatmap

Locator transmitted by JA5MHD

Approximate centre of PM63, decoded 2026-08-23 20:48 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 UTCBandJA5MHD S/NCounterpartCounterpart S/NMsgsCapture
08-23 20:45 40m -5 / - G3EFG - / -21 2 Partial capture
08-23 20:44 40m -4 / - EA3HKA - / -16 2 ✓ Closing fragment
08-23 20:03 80m - / - UF5F -1 / - 5 Partial capture
08-23 20:02 80m -4 / - YU7NW - / -16 2 Partial capture
08-23 19:58 60m - / - 9A4ZM -2 / - 3 Partial capture
08-23 19:56 80m - / -11 IK3/UY7LA +4 / - 3 Partial capture
08-23 19:54 80m - / - DK3ME -2 / - 8 Partial capture
08-23 19:53 80m - / - R4WQ -15 / - 2 Partial capture
08-23 19:53 80m - / -19 UR5NPF +9 / - 2 ✓ Closing fragment
08-23 19:51 80m -20 / -6 SP5ALV +12 / -13 4 ✓ Full exchange observed
08-23 19:45 80m - / - DJ3HW +9 / - 3 ✓ Closing fragment
08-23 19:44 80m - / -7 R7CD +6 / - 3 ✓ Closing fragment
08-23 19:43 80m - / -18 E75C 0 / - 2 ✓ Closing fragment
08-22 20:51 40m -8 / - IZ8DBJ - / -10 2 Partial capture
08-22 20:50 40m -6 / -16 SP2LQR +6 / -22 4 ✓ Full exchange observed
08-22 20:48 40m -6 / - EA8DNB - / -24 3 ✓ Closing fragment
08-22 20:47 40m -4 / -4 OK1SI +3 / -12 6 ✓ Full exchange observed
08-22 20:44 40m -3 / - PB7TT -8 / -23 4 ✓ Closing observed
08-22 20:44 40m -4 / +2 TA4PEK -15 / -13 4 ✓ Full exchange observed
08-22 20:42 40m -1 / - EA3AVS -15 / -14 3 ✓ Closing observed
08-22 20:41 40m -4 / - M0LAD -2 / -13 2 Partial capture
08-22 20:39 40m -3 / - LB7XH - / -20 3 ✓ Closing fragment
08-22 20:21 80m - / - DL5MG +8 / - 3 Partial capture
08-22 20:18 80m -18 / -8 DJ7M +14 / - 5 ✓ Closing observed
08-22 20:14 80m -12 / - DJ7M - / - 3 Partial capture
08-22 20:09 80m -18 / -15 RU3FA +6 / -20 4 ✓ Full exchange observed
08-22 20:05 80m - / - DJ5FI +22 / - 3 Partial capture
08-22 20:04 80m -16 / -3 OH6CK +10 / -12 6 ✓ Full exchange observed
08-22 20:04 80m - / - LA9TY +6 / - 2 Partial capture
08-22 20:03 80m -24 / -12 R5BS +6 / - 3 ✓ Closing observed
08-22 19:27 80m - / -15 RT6C +14 / - 2 ✓ Closing fragment
08-21 20:55 40m -16 / - SM0IJS - / -15 2 ✓ Closing fragment
08-21 20:54 40m -9 / - HB9XBY - / -19 3 Partial capture
08-21 20:52 40m - / - RZ4AT -8 / - 2 Partial capture
08-21 20:43 80m - / - RA3XDX +2 / - 4 Partial capture
08-21 20:29 80m -15 / - DL6NDW - / -18 2 Partial capture
08-21 20:29 80m - / - RU3T -1 / - 3 Partial capture
08-21 20:28 80m -14 / - JH4GXE - / -14 2 ✓ Closing fragment
08-21 20:27 80m - / - SP5GW +8 / - 2 Partial capture
08-21 20:26 80m -14 / -17 UA6BCB -5 / - 5 ✓ Closing observed
08-21 20:22 80m -18 / - RA3LBW +9 / -13 2 ✓ Closing observed
08-21 20:05 80m - / -7 F8FUA -6 / - 2 ✓ Closing fragment
08-21 20:04 80m -14 / - UR5NPF - / -10 2 Partial capture
08-21 20:03 80m - / - DL7ACN -2 / - 9 Partial capture
08-21 20:01 80m -14 / - R2EA/P - / -15 5 Partial capture
08-21 20:00 80m - / - DG4BRT -6 / - 6 Partial capture
08-21 19:59 80m -15 / - EA2DDE -1 / -16 3 ✓ Closing observed
08-21 19:54 80m - / -14 LA8AV +10 / - 2 Partial capture
08-21 19:52 80m -18 / -17 II7MGBA +7 / -17 2 Partial capture
08-21 19:41 80m -10 / -13 DM5KM +17 / -11 3 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
205030  +6  529  JA5MHD SP2LQR RR73
205045  -7  289  SP2LQR JA5MHD 73
205145  -3  289  IZ8DBJ JA5MHD -10 (x2)
205630 -17 1646  JA5MHD I5JHW/QRP R+00
205800  +0 2757  JA5MHD IZ8DBJ R-10
204330  -5  288  OK1ZJK JA5MHD -15
204400  -4  288  EA3HKA JA5MHD -16 (x2)
204500  -7  288  G3EFG JA5MHD -21 (x2)
204600  -3  289  PB0F JA5MHD -13
204630  -4  288  OM2WW JA5MHD -13
204845 -11  271  <...> JA5MHD PM63
205100  -4  539  OK1ZJK JA5MHD -14
80m 
UTC    dB Audio  Message
195615  -1 1813  JA5MHD DK3ME JO50
195645  +4 1130  JA5MHD IK3/UY7LA R-11
195645  +1 1813  JA5MHD DK3ME JO50
195715  +7 1130  JA5MHD IK3/UY7LA R-11
195715  +2 1813  JA5MHD DK3ME JO50 (x2)
195745  +2 1130  JA5MHD IK3/UY7LA R-11
195945  +1 1814  JA5MHD DK3ME JO50
200200  -5  938  YU7NW JA5MHD -16 (x2)
200315  -1 1549  JA5MHD UF5F KO98 (x5)
60m 
UTC    dB Audio  Message
195845  -3 1837  JA5MHD 9A4ZM JN86 (x3)
20m 
UTC    dB Audio  Message
224045  +4  659  JA5MHD A71QQ -14 (x4)
082645 -16 1088  JA5MHD CT3MD IM13 (x3)
230000  -2 1055  JA5MHD S57LU R+01 (x2)
233100 -16 1579  JA5MHD 7Z1CZ -07 (x2)
233745  -6  601  JA5MHD 7Z1BQ -15 (x4)
10m 
UTC    dB Audio  Message
072215 -12 2608  5B4AMM JA5MHD 73
072315 -12 2608  LZ2INP JA5MHD PM63 (x2)
084845 -21  778  JA5MHD ZS6MGM -09
083545 -24 1860  JA5MHD 5Z4SK RR73
215615 -16 2356  JA5MHD PD2JAM JO22
215715 -17 1995  JA5MHD IK1LRX JN34 (x7)
081600 -19 1600  JA5MHD IS0RVH 73

Decoder S/N history by band

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