JA5MHD — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving JA5MHD, decoded by SO8OO in southeastern Poland. 1,009 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 79 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-21.
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 1,009 FT8 messages attributed to JA5MHD as the transmitting token by decoded message structure across 79 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (50%), followed by 40 m (48%) and 20 m (2%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11.7 dB.
Overview
Bands
Last attributed message: 2026-10-21 21:15 UTC
Observed FT8 message patterns
- Attributed sample
- 1,009 messages
- Active dates
- 79 UTC dates
- Estimated median S/N
- -11.7 dB
- Estimated 10th-90th percentile
- -21.9 to -2.1 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 299, moderate (-15 to -9 dB) 393, strong (≥ -8 dB) 317.
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 JA5MHD in decoded directed-looking exchanges:
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 JA5MHD
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
- PM63 · 164 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,540 km (approx.)
- Last such locator decoded
- 2026-10-18 20:43 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 | JA5MHD S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-21 21:20 | 40m | - / - | EA5IT | +3 / - | 2 | Partial capture |
| 10-19 18:28 | 160m | - / - | SQ3RX | 0 / - | 2 | Partial capture |
| 10-18 20:57 | 160m | - / -17 | SV9CVY | +6 / - | 2 | ✓ Closing fragment |
| 10-18 20:47 | 160m | - / -10 | SQ3DQ | +12 / - | 2 | ✓ Closing fragment |
| 10-18 20:43 | 80m | -17 / +2 | DL1CC | -6 / - | 9 | ✓ Full exchange observed |
| 10-18 20:39 | 80m | -15 / -11 | HA8IB | -13 / -15 | 4 | ✓ Full exchange observed |
| 10-18 20:38 | 80m | -12 / -20 | YU7BW | +16 / -7 | 4 | ✓ Full exchange observed |
| 10-18 20:36 | 80m | -13 / -17 | LA6OP | -6 / -22 | 6 | Partial capture |
| 10-18 20:33 | 80m | -11 / - | DL1CC | - / -17 | 3 | Partial capture |
| 10-18 20:31 | 80m | -13 / -19 | F5NBU | +8 / -13 | 5 | ✓ Full exchange observed |
| 10-18 20:29 | 80m | - / -14 | SQ3DQ | -2 / - | 3 | ✓ Closing fragment |
| 10-18 20:03 | 160m | - / -10 | OH0Z | -7 / - | 2 | ✓ Closing fragment |
| 10-18 19:42 | 160m | -20 / - | DL1RWN | +15 / - | 2 | ✓ Closing observed |
| 10-18 18:56 | 160m | - / - | SP6ZC | +6 / - | 2 | Partial capture |
| 10-18 18:55 | 160m | -13 / -10 | RN3TT | -10 / -19 | 4 | ✓ Full exchange observed |
| 10-18 18:37 | 160m | - / - | SP6ZC | +3 / - | 3 | Partial capture |
| 10-18 18:36 | 160m | -12 / -11 | R5BS | +4 / - | 5 | ✓ Closing observed |
| 10-18 18:36 | 160m | - / -18 | R7MR | -11 / - | 2 | ✓ Closing fragment |
| 10-17 19:52 | 40m | - / - | F6CCS | -7 / - | 2 | Partial capture |
| 10-17 19:52 | 40m | -2 / - | VK4LK | - / -10 | 2 | ✓ Closing fragment |
| 10-17 19:49 | 40m | -4 / - | YD1EQN | - / -20 | 2 | ✓ Closing fragment |
| 10-17 19:45 | 40m | -7 / - | F4GVO | - / -15 | 2 | ✓ Closing fragment |
| 10-17 19:44 | 40m | -8 / - | ES5RY | - / -4 | 2 | ✓ Closing fragment |
| 10-17 19:43 | 40m | -6 / -10 | PA1L | +16 / -8 | 4 | ✓ Full exchange observed |
| 10-17 19:42 | 40m | -6 / - | DS2MGT | - / -13 | 2 | ✓ Closing fragment |
| 10-17 19:41 | 40m | -7 / -3 | YO4NT | -3 / -9 | 4 | ✓ Full exchange observed |
| 10-17 19:40 | 40m | -6 / - | OE1AES | - / -20 | 2 | Partial capture |
| 10-17 19:39 | 40m | -8 / -7 | DL3SAT | +11 / -17 | 4 | ✓ Full exchange observed |
| 10-17 08:53 | 10m | - / -6 | F1PBZ | -12 / - | 2 | ✓ Closing fragment |
| 10-16 20:11 | 80m | -13 / - | RN3TT | +2 / - | 2 | ✓ Closing observed |
| 10-15 21:36 | 80m | -22 / -25 | DK2PH | +9 / - | 2 | ✓ Closing observed |
| 10-15 21:25 | 80m | - / - | IZ0BVU | +1 / - | 9 | Partial capture |
| 10-15 21:24 | 80m | -24 / -21 | LY7T | +12 / -7 | 3 | ✓ Full exchange observed |
| 10-15 21:08 | 80m | - / -21 | EA3FCQ | -4 / - | 2 | ✓ Closing fragment |
| 10-14 21:15 | 80m | -12 / - | PY2WC | - / -16 | 5 | Partial capture |
| 10-14 21:14 | 80m | -14 / -15 | ON4IQ | +4 / - | 3 | ✓ Closing observed |
| 10-14 21:08 | 80m | -4 / -11 | IZ8FWN | -2 / -10 | 3 | ✓ Full exchange observed |
| 10-14 21:07 | 80m | -12 / -11 | SP1D | +12 / -12 | 3 | ✓ Full exchange observed |
| 10-14 21:07 | 80m | - / -18 | OT7K | +12 / - | 2 | ✓ Closing fragment |
| 10-14 18:28 | 80m | - / -17 | UN7LAN | -18 / - | 2 | ✓ Closing fragment |
| 09-22 20:53 | 80m | - / -12 | F6IRA | +4 / - | 2 | ✓ Closing fragment |
| 09-22 19:35 | 160m | - / -17 | R5BS | -11 / - | 2 | Partial capture |
| 09-22 19:26 | 160m | - / -17 | DK3ASE | +6 / - | 2 | ✓ Closing fragment |
| 09-22 19:04 | 80m | -24 / - | R4GM | +12 / -11 | 2 | ✓ Closing observed |
| 09-21 19:31 | 160m | - / - | SP7JLH | +4 / - | 5 | Partial capture |
| 09-21 19:23 | 160m | - / -22 | RC9WC | -18 / - | 2 | ✓ Closing fragment |
| 09-21 19:21 | 160m | - / -18 | G4EZT | 0 / - | 2 | ✓ Closing fragment |
| 09-20 20:50 | 80m | -18 / -9 | OH2BV | +12 / - | 4 | ✓ Closing observed |
| 09-20 20:02 | 80m | - / -24 | IK2QEI | +11 / - | 6 | ✓ Closing fragment |
| 09-20 20:02 | 80m | - / -21 | R1CBW | +8 / - | 6 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 194530 -6 340 F4GVO JA5MHD -15 (x2) 194915 -4 340 YD1EQN JA5MHD -20 (x2) 195045 -6 340 IU1SPZ JA5MHD -15 195115 -1 340 OK1FED JA5MHD -14 195215 +0 340 VK4LK JA5MHD -10 195230 -5 1487 JA5MHD F6CCS JN27 195245 -3 340 VK4LK JA5MHD RR73 195300 -9 1487 JA5MHD F6CCS JN27 195315 +0 340 YO2LZS JA5MHD -14 210945 -10 369 VU2XZ JA5MHD -10 211500 -11 276 HA9GKL JA5MHD -15 212015 +3 2957 JA5MHD EA5IT IM99 (x2)
UTC dB Audio Message 182145 -10 1091 JA5MHD LA9GX JO59 182845 +1 535 JA5MHD SQ3RX JO81 (x2) 184430 -6 1233 JA5MHD OK1XV JN79 184445 +1 538 JA5MHD SQ3RX JO81 193245 -23 1546 JA5MHD RK6OQ KN87 193545 +10 1557 JA5MHD SP6LUV JO90 193915 -1 1328 JA5MHD SM0FKI JO89 193915 +0 413 JA5MHD RC1TF -16 200915 -3 1999 JA5MHD DG0JK -20 203330 -21 1894 JA5MHD IZ7NLJ JN81 203330 -6 1702 JA5MHD IZ6TSA 73 204645 -2 691 JA5MHD YO3YV KN34 194245 +6 1368 JA5MHD S57MPU JN76 (x2)
UTC dB Audio Message 080515 -6 1194 JA5MHD DL8TV JN49 080915 -4 290 JA5MHD DL9KAR JO30 080930 +0 1067 JA5MHD DL3MIB R-10 080945 -4 290 JA5MHD DL9KAR JO30 081000 +3 1067 JA5MHD DL3MIB 73 081315 -8 2016 JA5MHD F5MYH R-07 (x2) 081445 -6 521 JA5MHD A92GE R-16 (x2) 083815 +7 2435 JA5MHD HB9TOC R-16 (x2) 085315 -11 742 JA5MHD F1PBZ -06 (x2) 071930 -9 328 DO1BWS JA5MHD RR73 072030 -7 328 RA9LL JA5MHD RR73
UTC dB Audio Message 203900 -3 2259 JA5MHD LA6OP JO59 (x2) 203945 -15 1188 HA8IB JA5MHD -15 204030 -11 1816 JA5MHD HA8IB R-11 (x3) 204315 -17 1184 DL1CC JA5MHD PM63 204330 -4 950 JA5MHD DL1CC +02 (x8)
UTC dB Audio Message 230030 -5 1054 JA5MHD S57LU 73 233100 -16 1579 JA5MHD 7Z1CZ -07 (x2) 233745 -6 601 JA5MHD 7Z1BQ -15 (x4) 225715 -19 2313 JA5MHD IZ5MJO R-07 225715 +4 2091 JA5MHD 9A7W R+12 (x3) 225845 -14 2313 JA5MHD IZ5MJO R-07 225915 +10 2780 JA5MHD IZ3ATV JN55 (x3)
UTC dB Audio Message 195845 -3 1837 JA5MHD 9A4ZM JN86 (x3)
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.
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