IZ4VVL — 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 IZ4VVL, decoded by SO8OO in southeastern Poland. 428 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 16 UTC dates in the available aggregate history. Observed between 2026-06-11 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 428 FT8 messages attributed to IZ4VVL as the transmitting token by decoded message structure across 16 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (83%), followed by 40 m (17%). Most decodes (55%) fell within the six-hour window 14:00-20:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7 dB.
Overview
Bands
Last attributed message: 2026-10-18 15:01 UTC
Observed FT8 message patterns
- Attributed sample
- 428 messages
- Active dates
- 16 UTC dates
- Estimated median S/N
- -7 dB
- Estimated 10th-90th percentile
- -16 to +1 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 51, moderate (-15 to -9 dB) 129, strong (≥ -8 dB) 248.
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 IZ4VVL 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 IZ4VVL
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
- JN54 · 186 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,013 km (approx.)
- Last such locator decoded
- 2026-10-18 14:59 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 | IZ4VVL S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-18 14:59 | 40m | -9 / +2 | GU4WRP | -14 / - | 3 | ✓ Closing observed |
| 10-18 14:57 | 40m | -11 / +2 | DK1HSI | -8 / - | 4 | ✓ Closing observed |
| 10-18 14:55 | 40m | +1 / - | DA0M | - / -22 | 3 | ✓ Closing fragment |
| 10-18 14:53 | 40m | -2 / - | DL3EBJ | -4 / 0 | 5 | ✓ Full exchange observed |
| 10-18 14:52 | 40m | - / +3 | OE1AES | -2 / - | 2 | ✓ Closing fragment |
| 10-18 14:49 | 40m | -2 / +6 | IN3JRZ | -2 / - | 4 | ✓ Closing observed |
| 10-13 19:05 | 40m | +2 / - | DA0M | - / -7 | 3 | ✓ Closing fragment |
| 10-07 19:40 | 40m | - / 0 | G8KHF | -6 / - | 2 | ✓ Closing fragment |
| 08-30 07:35 | 20m | 0 / - | HA2AI | - / +2 | 3 | ✓ Closing fragment |
| 08-30 07:32 | 20m | -2 / - | EA8DHQ | -18 / -10 | 4 | ✓ Closing observed |
| 08-30 07:30 | 20m | +2 / - | Z62NS | - / +8 | 2 | Partial capture |
| 08-30 07:27 | 20m | -3 / - | ON3CH | - / -11 | 2 | Partial capture |
| 08-24 18:33 | 20m | -5 / -4 | 7K1CPT | -4 / -3 | 5 | ✓ Full exchange observed |
| 08-24 18:31 | 20m | -4 / -3 | R4HHN | +7 / - | 3 | Partial capture |
| 08-24 18:27 | 20m | -6 / -17 | GW4AYJ | -1 / +2 | 4 | Partial capture |
| 08-24 18:23 | 20m | -2 / - | SP0LPR | - / - | 2 | ✓ Closing fragment |
| 08-24 18:20 | 20m | - / 0 | LB5SK | -4 / - | 2 | ✓ Closing fragment |
| 08-24 18:15 | 20m | -3 / +6 | OZ2SPACE | -10 / - | 2 | Partial capture |
| 08-22 07:21 | 20m | +5 / - | PD5RAY | -11 / -7 | 4 | ✓ Closing observed |
| 08-22 07:16 | 20m | 0 / -9 | F6DZU | +6 / -4 | 3 | ✓ Full exchange observed |
| 08-22 07:14 | 20m | -5 / - | UT7UJ | - / - | 2 | Partial capture |
| 08-22 07:11 | 20m | +8 / - | CR7BRV | - / -1 | 2 | Partial capture |
| 08-22 07:09 | 20m | +5 / - | OK2CNI | - / - | 4 | Partial capture |
| 08-22 07:08 | 20m | -2 / - | CR7BRV | - / - | 2 | Partial capture |
| 08-09 07:21 | 20m | -6 / - | F5GSJ | -23 / -7 | 4 | ✓ Closing observed |
| 08-09 07:18 | 20m | -6 / - | UA9SHH | - / - | 2 | ✓ Closing fragment |
| 08-09 07:16 | 20m | -5 / - | DK3XX | - / +1 | 3 | ✓ Closing fragment |
| 08-09 07:11 | 20m | -6 / - | SQ6WA | - / -8 | 4 | ✓ Closing fragment |
| 08-09 07:06 | 20m | -4 / +9 | IT9VCE | -5 / +9 | 5 | ✓ Full exchange observed |
| 08-09 07:04 | 20m | -9 / - | RA3DAD | - / +7 | 2 | Partial capture |
| 08-09 07:01 | 20m | -1 / - | OK1UOZ | - / -7 | 3 | ✓ Closing fragment |
| 08-09 06:59 | 20m | -5 / - | RX3ASQ | - / - | 2 | Partial capture |
| 08-09 06:58 | 20m | -6 / - | IK7YZB | - / -19 | 2 | ✓ Closing fragment |
| 08-09 06:57 | 20m | -6 / - | DG9MAQ | - / +5 | 3 | ✓ Closing fragment |
| 08-09 06:55 | 20m | -8 / - | DG7MAQ | - / +6 | 2 | ✓ Closing fragment |
| 08-09 06:53 | 20m | -4 / - | F5SFT | - / -1 | 3 | ✓ Closing fragment |
| 08-09 06:52 | 20m | -4 / - | SP1MGM | - / +6 | 2 | ✓ Closing fragment |
| 08-09 06:50 | 20m | -4 / -13 | <...> | -3 / +7 | 3 | Partial capture |
| 08-09 06:48 | 20m | -16 / - | R9FE | - / -9 | 3 | ✓ Closing fragment |
| 08-09 06:45 | 20m | -7 / - | DB7GE | -3 / - | 2 | ✓ Closing observed |
| 08-08 07:26 | 20m | -8 / -12 | R5KH | -23 / -2 | 4 | Partial capture |
| 08-02 07:33 | 20m | - / -9 | PD1B | -8 / - | 2 | ✓ Closing fragment |
| 08-02 07:31 | 20m | -19 / -9 | M9UTD | -13 / -13 | 3 | ✓ Full exchange observed |
| 08-02 07:21 | 20m | -12 / -9 | PD2WL | -22 / - | 6 | ✓ Closing observed |
| 08-02 07:21 | 20m | -13 / -17 | PD1TVN | -7 / - | 4 | ✓ Closing observed |
| 08-02 07:17 | 20m | -2 / -1 | F5MYK | -8 / - | 3 | ✓ Closing observed |
| 08-02 07:07 | 20m | -8 / - | UZ5DM | - / +6 | 3 | Partial capture |
| 08-02 07:04 | 20m | +8 / - | SQ5NAN | - / +7 | 2 | Partial capture |
| 08-02 07:01 | 20m | -8 / - | LX1RFJ | - / - | 3 | ✓ Closing fragment |
| 07-26 19:16 | 20m | -5 / - | RL2F | - / - | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 145400 -5 2287 IZ4VVL DL3EBJ +15 145415 +0 2285 DL3EBJ IZ4VVL R+00 145430 -4 2287 IZ4VVL DL3EBJ RR73 145445 -4 2286 DL3EBJ IZ4VVL 73 145515 -5 2285 DA0M IZ4VVL -22 (x3) 145730 -11 2055 DK1HSI IZ4VVL JN54 145745 -10 2054 IZ4VVL DK1HSI +02 (x2) 145830 -11 2055 DK1HSI IZ4VVL 73 145915 -9 1251 GU4WRP IZ4VVL JN54 145930 -14 1251 IZ4VVL GU4WRP +02 (x2) 150145 -11 1565 F4HSB IZ4VVL RR73
UTC dB Audio Message 183430 -3 2775 7K1CPT IZ4VVL 73 072700 -2 1872 ON3CH IZ4VVL JN54 (x2) 073045 +0 781 Z62NS IZ4VVL JN54 (x2) 073230 -9 2037 EA8DHQ IZ4VVL JN54 (x2) 073315 -18 2038 IZ4VVL EA8DHQ RR73 073330 +4 2037 EA8DHQ IZ4VVL 73 073445 -5 1328 YL2TM IZ4VVL 73 073530 -7 787 HA2AI IZ4VVL JN54 (x3) 082145 -19 2106 II7MGBT IZ4VVL R+09 082715 -18 2150 IT9ECY IZ4VVL JN54
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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