JA0LFV — 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 JA0LFV, decoded by SO8OO in southeastern Poland. 1,920 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 73 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-18.
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 1,920 FT8 messages attributed to JA0LFV as the transmitting token by decoded message structure across 73 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (94%), followed by 80 m (5%) and 40 m (1%). Most decodes (100%) fell within the six-hour window 16:00-22:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9.7 dB.
Overview
Bands
Last attributed message: 2026-10-18 20:40 UTC
Observed FT8 message patterns
- Attributed sample
- 1,920 messages
- Active dates
- 73 UTC dates
- Estimated median S/N
- -9.7 dB
- Estimated 10th-90th percentile
- -20 to +3 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 566, moderate (-15 to -9 dB) 490, strong (≥ -8 dB) 864.
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 JA0LFV 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 JA0LFV
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
- PM97 · 521 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,513 km (approx.)
- Last such locator decoded
- 2026-10-12 20:35 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 | JA0LFV S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-21 20:29 | 80m | - / -13 | R4DB | -6 / - | 2 | ✓ Closing fragment |
| 10-21 18:32 | 80m | - / -13 | R8PG | -4 / - | 2 | ✓ Closing fragment |
| 10-19 21:33 | 40m | - / -13 | OT7K | +8 / - | 2 | ✓ Closing fragment |
| 10-19 19:27 | 40m | - / -24 | DK1HSI | +2 / - | 9 | ✓ Closing fragment |
| 10-19 19:27 | 40m | - / -13 | UR5HAN | -16 / - | 3 | ✓ Closing fragment |
| 10-19 19:24 | 40m | - / -18 | DF5DG | +12 / - | 3 | ✓ Closing fragment |
| 10-18 20:39 | 80m | -20 / - | LA6OP | - / -17 | 2 | Partial capture |
| 10-18 20:26 | 80m | - / -17 | F5NBU | +6 / - | 3 | ✓ Closing fragment |
| 10-18 20:16 | 80m | - / -25 | OE3KJO | +4 / - | 9 | Partial capture |
| 10-18 20:08 | 80m | -16 / -21 | YU7BW | +19 / -3 | 8 | ✓ Full exchange observed |
| 10-18 20:04 | 80m | - / -23 | YL3KZ | +5 / - | 5 | ✓ Closing fragment |
| 10-18 20:01 | 80m | - / - | DL8UNO | +13 / - | 3 | Partial capture |
| 10-18 20:00 | 80m | - / - | YL3KZ | +1 / - | 4 | Partial capture |
| 10-18 20:00 | 80m | - / -13 | SP5GMM | +10 / - | 4 | ✓ Closing fragment |
| 10-18 19:04 | 40m | - / - | TA3NK | -7 / - | 9 | Partial capture |
| 10-18 18:51 | 40m | - / - | I4JLF | -7 / - | 5 | ✓ Closing fragment |
| 10-18 18:50 | 40m | - / - | DL1SRS | +2 / - | 2 | Partial capture |
| 10-17 20:19 | 80m | - / -10 | LZ1GC | +4 / - | 2 | ✓ Closing fragment |
| 10-17 20:08 | 80m | - / -16 | SP4JSR | +10 / - | 7 | Partial capture |
| 10-17 20:06 | 80m | -14 / -13 | OH5KNL | 0 / - | 3 | ✓ Closing observed |
| 10-16 20:51 | 80m | - / -23 | IZ2AMW | +10 / - | 2 | ✓ Closing fragment |
| 10-16 20:40 | 80m | - / -18 | OH5Z | +6 / - | 2 | ✓ Closing fragment |
| 10-16 20:31 | 80m | - / - | ON4IQ | +20 / - | 2 | Partial capture |
| 10-16 20:12 | 80m | - / -25 | PI4DX | +8 / - | 4 | ✓ Closing fragment |
| 10-16 20:08 | 80m | - / -15 | IZ8XXE | -6 / - | 2 | Partial capture |
| 10-16 19:38 | 40m | - / - | DK0RST | -9 / - | 3 | Partial capture |
| 10-15 20:54 | 80m | - / -21 | OH4TQ | -2 / - | 2 | ✓ Closing fragment |
| 10-14 20:16 | 80m | -18 / -16 | SP7AH | +13 / -18 | 5 | Partial capture |
| 10-14 20:06 | 80m | - / - | IZ5NRF | +1 / - | 2 | Partial capture |
| 10-14 20:05 | 80m | - / -22 | UW5KW | +12 / - | 4 | ✓ Closing fragment |
| 10-14 19:57 | 80m | -22 / - | HA5WA | - / -3 | 2 | Partial capture |
| 10-14 19:48 | 80m | - / - | UT4WT | -2 / - | 3 | Partial capture |
| 10-14 19:37 | 80m | - / -19 | IZ6BRN | +1 / - | 5 | ✓ Closing fragment |
| 10-14 19:33 | 80m | - / -3 | OM5FM | +16 / - | 2 | ✓ Closing fragment |
| 10-14 19:05 | 80m | - / -17 | RA3DAD | +6 / - | 2 | ✓ Closing fragment |
| 10-14 18:57 | 80m | - / -19 | UF5F | -2 / - | 3 | ✓ Closing fragment |
| 10-14 17:50 | 40m | - / -9 | UR3QFL | +3 / - | 4 | ✓ Closing fragment |
| 10-14 17:45 | 40m | - / -24 | IU1DOF | 0 / - | 4 | ✓ Closing fragment |
| 10-14 17:45 | 40m | - / - | DL6RS | +7 / - | 3 | Partial capture |
| 10-14 17:40 | 40m | - / -24 | DD6WF | -1 / - | 4 | ✓ Closing fragment |
| 10-14 17:39 | 40m | - / -14 | F5MOO | +12 / - | 2 | ✓ Closing fragment |
| 10-14 17:35 | 40m | - / -25 | F4MSA | +2 / - | 2 | Partial capture |
| 10-14 17:12 | 80m | - / -18 | RZ3DJ | +5 / - | 3 | ✓ Closing fragment |
| 10-13 20:52 | 80m | - / -22 | TF4M | -19 / - | 3 | Partial capture |
| 10-13 20:05 | 80m | - / -16 | EW6BZ | -2 / - | 3 | ✓ Closing fragment |
| 10-12 20:55 | 80m | -6 / - | YF4M | - / -8 | 3 | ✓ Closing fragment |
| 10-12 20:52 | 80m | - / -5 | DK7ZT | -8 / - | 3 | Partial capture |
| 10-12 20:49 | 80m | -5 / -15 | ER5DX | -19 / -8 | 6 | ✓ Full exchange observed |
| 10-12 20:48 | 80m | -2 / - | YO2UKG | - / -14 | 2 | Partial capture |
| 10-12 20:33 | 80m | - / -13 | IV3DXW | +18 / - | 4 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 201830 +4 1581 JA0LFV OE3KJO R-25 (x5) 202600 +9 544 JA0LFV F5NBU R-17 (x3) 203630 -8 2090 JA0LFV F6CTT 73 203945 -16 2178 LA6OP JA0LFV -17 (x2) 183245 -4 2217 JA0LFV R8PG R-13 (x2) 202915 -8 1753 JA0LFV R4DB R-13 (x2)
UTC dB Audio Message 192700 -18 1011 JA0LFV UR5HAN KN69 (x2) 192730 +2 728 JA0LFV DK1HSI R-24 192800 -13 1011 JA0LFV UR5HAN 73 192800 +3 728 JA0LFV DK1HSI R-24 (x8) 193700 -21 1650 JA0LFV YL3AUL RR73 213330 +8 722 JA0LFV OT7K R-13 (x2)
UTC dB Audio Message 192030 -8 1506 JA0LFV OH0Z R-22 (x3) 195915 +8 1673 JA0LFV OK2DA R-18 (x2) 184815 -12 1992 JA0LFV OH5KNL R-17 (x2) 173915 -18 491 JA0LFV IZ7NLJ R-20 (x3) 180015 +18 2682 JA0LFV DJ3GZ 73 182430 +16 850 JA0LFV LZ2IP -20 (x3) 185530 -6 2824 JA0LFV RJ6B KN95
UTC dB Audio Message 182300 -8 666 JA0LFV II7MGBA R-13 182600 -9 1777 JA0LFV F4LQM IN96 (x2) 182945 +2 1123 JA0LFV M0JPU R-13 183515 +4 1607 JA0LFV F4JZW JN08 (x4) 183715 -4 416 JA0LFV F4CVT JO00 (x2) 183845 +0 416 JA0LFV TA2ED -18 183930 -13 416 TA2ED JA0LFV R-20 (x4)
UTC dB Audio Message 101700 -12 1029 JA0LFV RR73; JA7SFD <...> -16
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.
Explore CW reception at SO8OOFT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee