W4JVN — 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: United States Most frequent locator attributed to this token: FM17

Receiver-side FT8 activity involving W4JVN, decoded by SO8OO in southeastern Poland. 59 FT8 messages attributed to this token as transmitter, on 160m, 40m, 20m, across 8 UTC dates in the available aggregate history. Observed between 2026-08-23 and 2026-11-05.

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 59 FT8 messages attributed to W4JVN as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (39%), followed by 160 m (37%) and 20 m (24%). Several six-hour UTC windows tied for the largest share (97%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (64%); the estimated median was -18 dB.

Overview

59
Messages attributed
8
UTC dates decoded
15
Active 15-min windows
-18 dB
Estimated median S/N

Bands

160m · 22 40m · 23 20m · 14
First attributed message: 2026-08-23
Last attributed message: 2026-11-05 23:01 UTC

Observed FT8 message patterns

Attributed sample
59 messages
Active dates
8 UTC dates
Estimated median S/N
-18 dB
Estimated 10th-90th percentile
-24 to 0 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 38, moderate (-15 to -9 dB) 7, strong (≥ -8 dB) 14.

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 W4JVN 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 W4JVN

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
FM17 · 7 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
7,470 km (approx.)
Last such locator decoded
2026-11-05 23:01 UTC

Other locator fields attributed to this token: FM18 (4).

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 UTCBandW4JVN S/NCounterpartCounterpart S/NMsgsCapture
11-05 23:52 160m - / -9 EI4DQ -1 / - 4 ✓ Closing fragment
11-05 23:17 160m - / - DL9KM -16 / - 7 Partial capture
11-05 23:16 160m - / -1 G6PZ -14 / - 3 ✓ Closing fragment
11-05 23:14 160m - / - PA3DUU -11 / - 4 Partial capture
11-05 23:07 160m - / - OM3IM +2 / - 5 ✓ Closing fragment
11-05 22:56 160m - / -13 SM6LRY -8 / - 12 Partial capture
11-05 22:50 160m - / -10 G4XEE -8 / - 2 ✓ Closing fragment
11-05 22:48 160m - / - OM3IM +2 / - 4 Partial capture
11-05 22:47 160m - / - DK2DB -10 / - 5 Partial capture
11-05 22:46 160m - / -14 DJ2TI -6 / - 5 ✓ Closing fragment
11-05 22:45 160m - / -20 LB5WB +13 / - 6 ✓ Closing fragment
11-05 22:39 160m - / - SP8VJV +9 / - 2 Partial capture
11-05 22:34 160m - / -14 SP6JIU +10 / - 5 ✓ Closing fragment
11-05 22:33 160m - / -18 DF2UU +2 / - 6 ✓ Closing fragment
11-05 22:33 160m - / - SP8VJV 0 / - 6 Partial capture
11-05 22:32 160m - / -17 OK2YN +15 / - 9 Partial capture
11-05 22:31 160m - / -16 DL3RL +3 / - 7 ✓ Closing fragment
11-05 22:30 160m - / -25 9A4N +8 / - 3 ✓ Closing fragment
11-05 22:26 160m - / -15 SV8CKM +10 / - 4 ✓ Closing fragment
11-04 23:50 160m - / - DK7QJ -9 / - 5 Partial capture
11-04 23:45 160m -23 / -18 LX1JX +7 / -25 10 ✓ Full exchange observed
11-04 23:42 160m -21 / -12 OM3SX +9 / -8 4 ✓ Full exchange observed
11-04 23:40 160m - / - SM6LRY -11 / - 3 Partial capture
11-04 23:38 160m - / - F4WEO -18 / - 4 Partial capture
11-04 23:37 160m - / -21 DL1OBF +5 / - 4 ✓ Closing fragment
11-04 23:37 160m - / - OM3SX +2 / - 2 Partial capture
11-04 23:28 160m - / -4 F5MYH -2 / - 4 ✓ Closing fragment
11-04 23:25 160m - / -23 EC6AAE +12 / - 3 ✓ Closing fragment
11-04 23:09 160m - / -11 GI4DOH -20 / - 2 Partial capture
11-04 22:21 160m - / -13 F5NZ -4 / - 3 ✓ Closing fragment
11-04 22:17 160m - / -14 F6DAY -7 / - 2 Partial capture
11-04 22:14 160m - / -12 M0HJJ -3 / - 3 ✓ Closing fragment
11-04 22:12 160m - / - YO2MTG 0 / - 6 Partial capture
11-04 22:10 160m - / -22 F6DAY -6 / - 4 ✓ Closing fragment
11-04 22:09 160m - / - IK2TDM 0 / - 4 Partial capture
11-04 22:09 160m - / - IZ8VYU -14 / - 3 Partial capture
11-04 22:08 160m - / -24 CT2GQA -17 / - 7 ✓ Closing fragment
11-04 22:08 160m - / -8 MD0CCE +8 / - 2 ✓ Closing fragment
11-04 22:07 160m - / - HB9TOC -4 / - 2 Partial capture
11-04 22:03 160m - / - CT2GQA -21 / - 5 Partial capture
11-04 22:03 160m - / -26 E73S +9 / - 4 ✓ Closing fragment
11-04 22:01 160m - / - IZ0BVU +5 / - 6 Partial capture
11-04 21:57 160m - / - OZ5AGJ -1 / - 3 Partial capture
11-04 21:55 160m - / -22 IZ7NLJ -13 / - 9 Partial capture
11-04 21:49 160m - / - IK3UTT -4 / - 2 Partial capture
11-04 21:41 160m - / - IZ7NLJ -17 / - 5 Partial capture
11-04 21:40 160m - / -17 SP3PLD +17 / - 3 ✓ Closing fragment
11-04 21:38 160m - / -19 F8BON -14 / - 4 Partial capture
11-04 21:37 160m - / - SP3PLD +17 / - 2 Partial capture
11-04 21:36 160m - / - PA0O +4 / - 11 Partial capture

Recent FT8 messages decoded at SO8OO

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

160m 
UTC    dB Audio  Message
231615 -11 1910  W4JVN PA3DUU JO21
231615 -14 1554  W4JVN G6PZ IO81 (x3)
231715 -17 1379  W4JVN DL9KM JN68 (x7)
235230  -3 2421  W4JVN EI4DQ -09 (x4)
40m 
UTC    dB Audio  Message
235430 -18 1938  SP7NC W4JVN -23
235530 -16 1937  KF5VDX W4JVN -04 (x2)
235700 -16 1937  CQ W4JVN FM18 (x2)
235800 -14 1938  ND8G W4JVN R-02 (x2)
235900 -14 1937  WA4CMO W4JVN -02 (x2)
000000 -17 1938  KA8ARI W4JVN -11 (x2)
000045 -16 2091  W4JVN RD7O KN98 (x2)
000215  -1 1500  W4JVN EA5HM IM99 (x2)
20m 
UTC    dB Audio  Message
204345 +10 2138  W4JVN ER3BN -16
204400  +1 2347  ER3BN W4JVN R-03
204415  -5  457  W4JVN UR4UNR KO50
204430  -4 2347  ER3BN W4JVN R-05
204445  +9 2138  W4JVN ER3BN RR73
204500  +0 2347  ER3BN W4JVN 73
204530  +0 2347  YU4RBL W4JVN -25 (x2)
204630  +2 2347  UX5UO W4JVN -01 (x2)
204730  +0 2347  OG2KAJ W4JVN R-17 (x2)
204830  -2 2347  UW8SM W4JVN +06 (x3)

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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