4X1VL — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Israel Most frequent locator attributed to this token: KM72

Receiver-side FT8 activity involving 4X1VL, decoded by SO8OO in southeastern Poland. 562 FT8 messages attributed to this token as transmitter, on 80m, 60m, 10m, across 49 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-11-06.

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 562 FT8 messages attributed to 4X1VL as the transmitting token by decoded message structure across 49 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (96%), followed by 60 m (3%) and 10 m (2%). Most decodes (89%) fell within the six-hour window 21:00-03:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.

Overview

562
Messages attributed
49
UTC dates decoded
134
Active 15-min windows
-12 dB
Estimated median S/N

Bands

80m · 538 60m · 15 10m · 9
First attributed message: 2026-06-07
Last attributed message: 2026-11-06 00:02 UTC

Observed FT8 message patterns

Attributed sample
562 messages
Active dates
49 UTC dates
Estimated median S/N
-12 dB
Estimated 10th-90th percentile
-20.9 to -5 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 175, moderate (-15 to -9 dB) 237, strong (≥ -8 dB) 150.

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 4X1VL 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 4X1VL

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
KM72 · 39 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
2,224 km (approx.)
Last such locator decoded
2026-10-27 01:21 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 UTCBand4X1VL S/NCounterpartCounterpart S/NMsgsCapture
11-05 23:56 80m -24 / - EX7DY - / - 3 ✓ Closing fragment
11-05 19:16 80m -17 / -22 SP5AA +14 / - 5 ✓ Closing observed
11-05 19:14 80m - / -9 S57MPU -6 / - 2 ✓ Closing fragment
11-05 02:01 80m - / +1 SV5BYP -8 / - 3 Partial capture
11-05 01:21 80m - / -20 ON4DXL +4 / - 2 ✓ Closing fragment
11-05 01:20 80m - / -17 CT7BRV -10 / - 2 ✓ Closing fragment
11-01 19:04 80m - / -9 IK6HRB +8 / - 7 ✓ Closing fragment
11-01 18:32 80m - / -19 SP4SKN +8 / - 2 ✓ Closing fragment
10-31 23:37 80m - / -15 SQ5JRE -6 / - 2 ✓ Closing fragment
10-31 20:26 80m - / - DB8WK +14 / - 2 Partial capture
10-31 20:22 80m - / -13 DO3VE -2 / - 6 ✓ Closing fragment
10-31 20:19 80m -21 / - DA1ST - / -17 2 ✓ Closing fragment
10-30 16:11 80m - / - RC6OZ -8 / - 2 Partial capture
10-29 23:30 80m - / -19 SP9NVY +6 / - 2 ✓ Closing fragment
10-29 23:21 160m - / -20 OK1AYU -8 / - 2 Partial capture
10-29 23:18 80m -22 / - OK1AYU - / -6 2 Partial capture
10-29 23:07 80m -14 / - UA3IDQ - / -16 4 Partial capture
10-29 23:04 80m - / +7 F6IES +1 / - 2 ✓ Closing fragment
10-29 23:00 80m - / -18 SP6FME +18 / - 4 ✓ Closing fragment
10-29 22:46 80m -19 / - UA3IDQ - / -22 2 Partial capture
10-29 22:44 80m -14 / -2 EA4IPN -23 / -16 3 ✓ Full exchange observed
10-29 22:43 80m -16 / - EA5FQ - / -16 2 Partial capture
10-29 22:41 80m - / -7 P4/WE9V +12 / - 2 Partial capture
10-29 22:40 80m - / -7 HF50HSP +4 / - 2 Partial capture
10-29 22:38 80m -19 / - P4/WE9V - / -19 2 Partial capture
10-29 22:37 80m -24 / - F6ECB - / -15 2 Partial capture
10-29 20:01 80m - / -18 DJ7M +14 / - 2 ✓ Closing fragment
10-29 19:59 80m - / 0 SV0LS -6 / - 2 ✓ Closing fragment
10-29 00:52 80m - / -14 DK6XY +1 / - 2 ✓ Closing fragment
10-29 00:35 80m - / - OK2CNI +14 / - 4 Partial capture
10-29 00:28 80m -16 / - P4/WE9V - / -17 2 Partial capture
10-28 19:54 80m -18 / - R3VA - / -14 2 Partial capture
10-27 19:06 80m - / -18 HA8ZG +8 / - 8 Partial capture
10-27 19:00 80m - / -18 HA8ZG +6 / - 3 Partial capture
10-27 02:41 80m -14 / - P4/WE9V - / -19 2 Partial capture
10-27 02:13 80m -10 / -6 IU8SDA +1 / -3 4 ✓ Full exchange observed
10-27 02:03 80m -17 / - R4HHN - / -16 2 Partial capture
10-27 01:58 80m -16 / - R4HHN - / -18 2 Partial capture
10-27 01:54 80m -21 / -20 R3KLE -4 / -16 5 ✓ Full exchange observed
10-27 01:50 80m -14 / - R4HHN - / -17 6 Partial capture
10-27 01:46 80m -18 / - RA6MQ - / -18 2 Partial capture
10-27 01:44 80m -8 / - CT2HEX - / -20 3 ✓ Closing fragment
10-27 01:42 80m -14 / -16 F4EWK +2 / -14 3 ✓ Full exchange observed
10-27 01:37 80m -10 / - R4HHN - / -18 4 Partial capture
10-27 01:28 80m - / -10 I1RJP +18 / - 2 ✓ Closing fragment
10-27 01:24 80m -10 / - R9HAG - / -16 2 ✓ Closing fragment
10-27 01:19 80m - / -15 RW6HP 0 / - 4 ✓ Closing fragment
10-27 01:13 80m -9 / - RW9MZ - / -18 2 ✓ Closing fragment
10-27 01:12 80m -8 / - R1AO - / -14 2 Partial capture
10-27 01:09 80m -3 / -18 S51SLO +1 / - 4 ✓ Closing observed

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

80m 
UTC    dB Audio  Message
020615  -9 1015  4X1VL RW6HP 73
023430  -6  506  4X1VL RR73; RV9WJP <...> -18
191415 -10 1450  4X1VL S57MPU R-09 (x2)
191545  +3 2460  4X1VL OH5KNL R-14
191615 +17 1851  4X1VL SP5AA JO92 (x3)
191730 -17  621  SP5AA 4X1VL RR73
191745 +12 1851  4X1VL SP5AA 73
192945 -18  621  EX7DY 4X1VL -20 (x5)
160m 
UTC    dB Audio  Message
232100  -7 1931  4X1VL OK1AYU R-20 (x2)
60m 
UTC    dB Audio  Message
195545  +1  575  OZ2LC 4X1VL RR73
195600  -4  592  4X1VL OZ2LC 73
195600 -15 1662  4X1VL IK4CBO JN54
195715  +2  575  LB6LK 4X1VL -22 (x2)
230530 +17 2531  4X1VL DF7EF JO30
230545  -6  574  DF7EF 4X1VL -02
230600 +17 2531  4X1VL DF7EF R-05
230615  -6  574  DF7EF 4X1VL RR73
230630 +16 2531  4X1VL DF7EF 73
015445 -10  473  ER3ZW 4X1VL -13 (x2)
015730  -5 1670  4X1VL ER3ZW R-13
015745 -11  473  ER3ZW 4X1VL RR73
015800  -6 1669  4X1VL ER3ZW 73
10m 
UTC    dB Audio  Message
133800  -9  285  4X1VL C50A R-12
140930 -10  635  R4CHN 4X1VL -22 (x2)
141215 -14  635  EA5BZ 4X1VL -14 (x2)
143545 -11  634  7P8GE 4X1VL -14 (x5)

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 SO8OO

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