JA4GCL — 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 JA4GCL, decoded by SO8OO in southeastern Poland. 21 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 9 UTC dates in the available aggregate history. Observed between 2026-06-19 and 2026-10-15.
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 21 FT8 messages attributed to JA4GCL as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (43%), followed by 40 m (43%) and 20 m (14%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (71%); the estimated median was -19 dB.
Overview
Bands
Last attributed message: 2026-10-15 20:57 UTC
Observed FT8 message patterns
- Attributed sample
- 21 messages
- Active dates
- 9 UTC dates
- Estimated median S/N
- -19 dB
- Estimated 10th-90th percentile
- -24 to -9 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 15, moderate (-15 to -9 dB) 5, strong (≥ -8 dB) 1.
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 JA4GCL 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 JA4GCL
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
- PM64 · 15 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,453 km (approx.)
- Last such locator decoded
- 2026-10-15 20:57 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 | JA4GCL S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 11-05 21:05 | 40m | - / -18 | F4IVG | -11 / - | 3 | Partial capture |
| 11-05 20:54 | 80m | - / -18 | OE8DDX | +8 / - | 2 | ✓ Closing fragment |
| 11-03 21:49 | 80m | - / -17 | OE8DDX | +13 / - | 2 | ✓ Closing fragment |
| 11-03 21:26 | 80m | - / - | IK5SRB | 0 / - | 3 | Partial capture |
| 11-03 21:04 | 80m | - / -11 | YO2MAX | +6 / - | 2 | ✓ Closing fragment |
| 11-01 21:21 | 160m | - / -19 | OH0Z | +5 / - | 3 | ✓ Closing fragment |
| 10-31 20:40 | 160m | - / -13 | F5BZB | +3 / - | 2 | Partial capture |
| 10-31 20:22 | 160m | - / -20 | ON4IQ | +12 / - | 2 | Partial capture |
| 10-21 20:46 | 40m | - / -9 | YO9HP | 0 / - | 2 | ✓ Closing fragment |
| 10-21 20:38 | 40m | - / - | EA3EDU | +3 / - | 5 | Partial capture |
| 10-18 21:31 | 80m | - / -21 | LZ1GC | +4 / - | 3 | Partial capture |
| 10-17 20:37 | 160m | - / - | 4J3DJ | -5 / - | 2 | ✓ Closing fragment |
| 10-17 20:35 | 160m | - / - | OH5KNL | -4 / - | 3 | Partial capture |
| 10-16 21:21 | 80m | - / -22 | OH5Z | +12 / - | 4 | ✓ Closing fragment |
| 10-15 21:00 | 80m | - / -10 | OH6XX | +1 / - | 3 | ✓ Closing fragment |
| 10-13 21:02 | 160m | - / -17 | SP3PLD | +13 / - | 2 | ✓ Closing fragment |
| 10-13 20:49 | 40m | - / -1 | IK2JYT | +13 / - | 3 | Partial capture |
| 10-12 20:46 | 80m | - / - | UF5F | -9 / - | 2 | Partial capture |
| 10-12 20:45 | 80m | - / - | IV3DXW | +10 / - | 2 | Partial capture |
| 10-12 20:43 | 80m | -21 / -20 | HB9BLQ | +7 / -13 | 4 | ✓ Full exchange observed |
| 10-12 20:38 | 80m | - / -25 | HB9BLQ | +15 / - | 3 | Partial capture |
| 10-12 20:34 | 80m | -24 / - | HB9BLQ | - / - | 2 | Partial capture |
| 10-12 20:09 | 80m | - / - | UF5F | 0 / - | 3 | Partial capture |
| 10-11 20:46 | 80m | -20 / - | UN7LAN | - / - | 2 | Partial capture |
| 10-02 21:23 | 40m | - / -16 | 3Z4DX | -10 / - | 2 | ✓ Closing fragment |
| 10-02 20:34 | 160m | - / -13 | SM2LIY | +10 / - | 3 | ✓ Closing fragment |
| 10-02 20:31 | 160m | - / -9 | SM2LIY | +12 / - | 3 | Partial capture |
| 09-28 20:42 | 160m | - / -13 | UN0GY | -14 / - | 2 | ✓ Closing fragment |
| 09-27 20:24 | 80m | - / -24 | OH2BGD | +12 / - | 4 | ✓ Closing fragment |
| 09-26 20:25 | 40m | - / -15 | M5BFL | -2 / - | 2 | ✓ Closing fragment |
| 09-26 20:09 | 40m | - / -15 | EX7DY | -16 / - | 2 | ✓ Closing fragment |
| 09-23 21:14 | 80m | - / -22 | ON6AA | 0 / - | 2 | Partial capture |
| 09-23 21:13 | 80m | - / -14 | CN8WK | -6 / - | 2 | ✓ Closing fragment |
| 09-23 21:11 | 80m | - / -12 | EI4KF | +1 / - | 3 | Partial capture |
| 09-23 21:09 | 80m | - / - | ON6AA | +4 / - | 5 | Partial capture |
| 09-23 20:16 | 160m | - / -18 | OH3SR | -7 / - | 3 | ✓ Closing fragment |
| 09-21 20:50 | 80m | - / -17 | HA5OV | +3 / - | 2 | ✓ Closing fragment |
| 09-20 20:28 | 80m | - / - | RT6Z | 0 / - | 3 | Partial capture |
| 09-20 20:26 | 80m | - / -15 | LY3KI | +15 / - | 3 | ✓ Closing fragment |
| 09-18 18:02 | 160m | - / -22 | ES2AJ | +4 / - | 2 | ✓ Closing fragment |
| 09-18 17:59 | 160m | - / -22 | ES2AJ | 0 / - | 2 | Partial capture |
| 09-15 21:00 | 80m | - / -18 | OH4TQ | -6 / - | 2 | Partial capture |
| 09-14 20:22 | 80m | - / -18 | SV9CVY | +5 / - | 2 | ✓ Closing fragment |
| 09-12 21:15 | 40m | - / -1 | OZ1AXG | +22 / - | 3 | ✓ Closing fragment |
| 09-12 20:58 | 40m | - / -15 | OH5KT | -2 / - | 2 | ✓ Closing fragment |
| 09-11 19:46 | 40m | - / -12 | DM8BJF | +11 / - | 3 | Partial capture |
| 09-11 19:08 | 40m | -21 / -19 | YO3FRI | +11 / - | 3 | Partial capture |
| 09-09 21:02 | 80m | - / -18 | IZ5ILK | +20 / - | 3 | ✓ Closing fragment |
| 09-09 20:27 | 80m | - / -7 | UX5UO | +9 / - | 4 | ✓ Closing fragment |
| 09-09 20:27 | 80m | - / -11 | DJ7M | +14 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 212300 -11 634 JA4GCL 3Z4DX -16 (x2) 204915 +12 766 JA4GCL IK2JYT JN45 (x3) 203845 +6 2487 JA4GCL EA3EDU JN01 (x5) 204600 +3 790 JA4GCL YO9HP -09 (x2) 210515 -10 2307 JA4GCL F4IVG -18 (x3)
UTC dB Audio Message 212130 +14 1903 JA4GCL OH5Z -22 (x3) 213130 +3 1394 JA4GCL LZ1GC R-21 (x3) 210430 +7 1173 JA4GCL YO2MAX -11 (x2) 212630 -2 1899 JA4GCL IK5SRB JN63 (x3) 214900 +16 2701 JA4GCL OE8DDX -17 (x4)
UTC dB Audio Message 203530 +11 762 JA4GCL SM2LIY RR73 210200 +14 2310 JA4GCL SP3PLD -17 (x2) 203515 -6 2395 JA4GCL OH5KNL KP30 (x3) 203745 -5 420 JA4GCL 4J3DJ RR73 (x2) 202245 +9 2626 JA4GCL ON4IQ -20 (x2) 204045 +3 659 JA4GCL F5BZB -13 (x2) 212145 +8 2750 JA4GCL OH0Z -19 (x3)
UTC dB Audio Message 071600 -23 2284 JA4GCL HB9ACA -13 (x4)
UTC dB Audio Message 225515 -8 506 JA4GCL SV2HTW -20 223115 +13 1213 JA4GCL DK0SD RR73
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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