JH4MGU — 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 JH4MGU, decoded by SO8OO in southeastern Poland. 177 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-08-23 and 2026-10-20.
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 177 FT8 messages attributed to JH4MGU as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (93%), followed by 40 m (7%). In this small sample, the estimated median decoder S/N was -5 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-10-20 21:13 UTC
Observed FT8 message patterns
- Attributed sample
- 177 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -5 dB
- Estimated 10th-90th percentile
- -12 to -1 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 8, moderate (-15 to -9 dB) 31, strong (≥ -8 dB) 138.
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 JH4MGU 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 JH4MGU
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
- PM75 · 77 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,477 km (approx.)
- Last such locator decoded
- 2026-10-20 21:13 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 | JH4MGU S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-30 21:33 | 40m | - / -7 | DL2MIJ | +2 / - | 3 | ✓ Closing fragment |
| 10-30 21:32 | 40m | - / - | IW2AFC | -15 / - | 3 | Partial capture |
| 10-30 21:32 | 40m | - / - | IK2ZJR | -8 / - | 2 | Partial capture |
| 10-30 21:26 | 40m | - / -16 | DJ7M | +13 / - | 2 | ✓ Closing fragment |
| 10-30 21:25 | 40m | - / - | IK2ZJR | -16 / - | 2 | Partial capture |
| 10-30 21:20 | 40m | - / -11 | ON4IQ | +7 / - | 2 | ✓ Closing fragment |
| 10-30 21:08 | 40m | - / - | F8MRQ | +2 / - | 4 | Partial capture |
| 10-30 21:01 | 40m | - / - | DH5BM | -20 / - | 3 | Partial capture |
| 10-30 21:01 | 40m | - / - | RZ4FWA | -10 / - | 2 | Partial capture |
| 10-29 21:58 | 40m | - / -7 | EA6ABF | +8 / - | 4 | ✓ Closing fragment |
| 10-29 21:44 | 40m | - / - | F5IYE | +6 / - | 2 | Partial capture |
| 10-29 21:38 | 40m | - / - | EB1LA | -11 / - | 3 | ✓ Closing fragment |
| 10-29 21:34 | 40m | - / - | EA3OR | -6 / - | 9 | Partial capture |
| 10-29 21:33 | 40m | - / - | F4HWM | -2 / - | 4 | Partial capture |
| 10-29 21:28 | 40m | - / -11 | R4ABW | 0 / - | 2 | ✓ Closing fragment |
| 10-29 21:27 | 40m | - / - | F1GTU | -3 / - | 2 | Partial capture |
| 10-29 21:25 | 40m | - / - | F4EEJ | +4 / - | 3 | Partial capture |
| 10-29 21:13 | 40m | - / - | F5PBG | -2 / - | 2 | Partial capture |
| 10-27 22:40 | 40m | - / - | SV1HFE | +4 / - | 5 | Partial capture |
| 10-27 21:42 | 40m | - / -22 | EA5RR | -4 / - | 4 | Partial capture |
| 10-27 21:38 | 40m | - / - | EA5RR | -8 / - | 4 | Partial capture |
| 10-20 21:32 | 40m | - / - | EA5IT | -15 / - | 2 | Partial capture |
| 10-20 21:28 | 40m | - / - | IK7FBK | +4 / - | 2 | Partial capture |
| 10-20 21:27 | 40m | - / - | F5PBG | +12 / - | 2 | Partial capture |
| 10-20 21:24 | 40m | - / -12 | PA7MM | +8 / - | 2 | ✓ Closing fragment |
| 10-20 21:20 | 40m | - / -17 | M7SEY | -6 / - | 5 | Partial capture |
| 10-20 21:17 | 40m | - / - | F5PBG | +2 / - | 2 | Partial capture |
| 10-20 21:17 | 40m | - / - | OS7P | +3 / - | 10 | Partial capture |
| 10-20 21:15 | 40m | - / - | F4MGP | -7 / - | 5 | Partial capture |
| 10-20 21:13 | 40m | -10 / -10 | PC2J | -1 / -17 | 4 | ✓ Full exchange observed |
| 10-20 08:27 | 10m | - / -5 | CN8WK | -8 / - | 2 | ✓ Closing fragment |
| 10-19 22:37 | 40m | - / -22 | R4FDD | +5 / - | 4 | ✓ Closing fragment |
| 10-19 22:34 | 40m | - / - | F5RAV | -12 / - | 4 | Partial capture |
| 10-19 22:00 | 40m | - / - | F5RAV | -11 / - | 3 | Partial capture |
| 10-19 21:59 | 40m | - / - | M0OVG | -14 / - | 3 | Partial capture |
| 10-19 21:59 | 40m | - / - | OK1XLE | -3 / - | 3 | Partial capture |
| 10-19 21:55 | 40m | - / - | SV1MOZ | -14 / - | 2 | Partial capture |
| 10-19 21:53 | 40m | - / +4 | TF4M | -16 / - | 2 | ✓ Closing fragment |
| 10-19 21:49 | 40m | - / -10 | OZ0JX | +2 / - | 2 | ✓ Closing fragment |
| 10-19 21:48 | 40m | - / - | IU5HIU | -10 / - | 3 | Partial capture |
| 10-19 21:48 | 40m | - / - | PC2J | -11 / - | 2 | Partial capture |
| 10-19 21:48 | 40m | - / - | S55A | -2 / - | 3 | Partial capture |
| 10-19 21:43 | 40m | - / - | S55A | -1 / - | 3 | Partial capture |
| 10-19 21:41 | 40m | - / -7 | OT7K | +2 / - | 2 | ✓ Closing fragment |
| 10-19 21:38 | 40m | - / - | IU5HIU | 0 / - | 4 | Partial capture |
| 10-19 21:32 | 40m | - / -15 | IW9HPG | -2 / - | 6 | ✓ Closing fragment |
| 10-19 21:28 | 40m | - / -12 | IW0BSQ | -4 / - | 2 | Partial capture |
| 10-19 21:25 | 40m | - / - | IZ1MIG | +1 / - | 3 | Partial capture |
| 10-13 21:38 | 40m | - / -6 | UN0GY | -8 / - | 4 | Partial capture |
| 10-13 21:32 | 40m | - / -19 | R7DX | -12 / - | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 212645 +13 1427 JH4MGU DJ7M -16 (x2) 212945 -13 2393 JH4MGU IK2ZJR JN45 (x2) 213245 -20 1374 JH4MGU IW2AFC JN45 213245 -16 1537 JH4MGU IU5VLR JN53 213245 -9 2393 JH4MGU IK2ZJR JN45 213315 +2 2393 JH4MGU DL2MIJ JN58 (x2) 213415 -11 1373 JH4MGU IW2AFC JN45 213415 +3 2393 JH4MGU DL2MIJ RR73 213445 -14 1373 JH4MGU IW2AFC JN45 213545 -5 2993 JH4MGU I1YTO JN44 213615 -1 2393 JH4MGU F8MRQ JN17 213745 -20 2393 JH4MGU DL7ACA JO40
UTC dB Audio Message 111000 -21 1370 JH4MGU G4PMZ -14 111800 -18 1531 JH4MGU G4XEE -06 (x3) 075545 -8 1690 JH4MGU LZ2II -21 (x5) 080245 -10 719 JH4MGU EA3AKY -02 (x2) 082745 -7 1664 JH4MGU CN8WK -05 (x2)
UTC dB Audio Message 192500 -20 2238 JH4MGU R3ZMM KO90 (x3) 192630 -11 2607 JH4MGU RN3QQT -17 192630 -13 2238 JH4MGU R3ZMM KO90 192700 -8 2607 JH4MGU RN3QQT RR73 192700 -12 2238 JH4MGU R3ZMM KO90 (x2) 192930 -15 2000 JH4MGU R3ZP -10 192930 -19 2238 JH4MGU R3ZMM KO90 193000 -24 1385 JH4MGU RX6DA KN85 193000 -8 1999 JH4MGU R3ZP RR73 193000 -13 2238 JH4MGU R3ZMM KO90 (x3)
UTC dB Audio Message 225300 +5 2424 JH4MGU R2DN KO95 225315 -15 2424 BI3AAJ/P JH4MGU 73 225330 +1 2424 JH4MGU R2DN KO95 (x2) 225415 -14 2424 R2DN JH4MGU RR73 225430 +1 2425 JH4MGU R2DN 73 225500 -19 1782 JH4MGU SV2TCC R-15 225845 -11 2424 R0SBH JH4MGU -19 225945 -13 2424 BI3AAJ/P JH4MGU PM75 (x5) 055330 -13 1043 JH4MGU XQ1KK -18 (x2)
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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