N1SV — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: FN42

Receiver-side FT8 activity involving N1SV, decoded by SO8OO in southeastern Poland. 65 FT8 messages attributed to this token as transmitter, on 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-09-06 and 2026-09-20.

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 65 FT8 messages attributed to N1SV as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). 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 strong S/N range (100%); the estimated median was +2 dB.

Overview

65
Messages attributed
4
UTC dates decoded
9
Active 15-min windows
+2 dB
Estimated median S/N

Bands

40m · 65
First attributed message: 2026-09-06
Last attributed message: 2026-09-20 00:08 UTC

Observed FT8 message patterns

Attributed sample
65 messages
Active dates
4 UTC dates
Estimated median S/N
+2 dB
Estimated 10th-90th percentile
-5 to +8 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 65.

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 N1SV 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 N1SV

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
FN42 · 21 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
6,716 km (approx.)
Last such locator decoded
2026-09-20 00:08 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 UTCBandN1SV S/NCounterpartCounterpart S/NMsgsCapture
09-20 00:04 40m +8 / - 3A2MW - / - 7 Partial capture
09-11 23:05 40m - / - PD0LBY -2 / - 2 Partial capture
09-11 00:25 40m 0 / - CX2SA - / -17 2 Partial capture
09-11 00:22 40m +1 / - UR1CCT -2 / +3 8 ✓ Full exchange observed
09-11 00:21 40m +3 / - HG8LXL - / -13 2 ✓ Closing fragment
09-11 00:21 40m 0 / - RN6HK +7 / -6 6 ✓ Full exchange observed
09-11 00:20 40m +2 / - R6DZL -9 / -12 2 Partial capture
09-11 00:20 40m - / - RU4B -7 / - 6 Partial capture
09-11 00:19 40m +1 / -6 G0YCE -2 / -10 6 ✓ Full exchange observed
09-11 00:18 40m -2 / - CX2SA - / -18 2 Partial capture
09-11 00:17 40m 0 / - SP7NC - / -13 2 ✓ Closing fragment
09-11 00:16 40m 0 / - F5RRS - / +1 2 ✓ Closing fragment
09-11 00:16 40m - / - RN6HK +13 / - 3 Partial capture
09-11 00:15 40m +2 / - DJ0MAB - / -9 2 ✓ Closing fragment
09-11 00:14 40m 0 / - DK8HC - / -17 2 ✓ Closing fragment
09-11 00:14 40m - / - R6DZL -16 / - 2 Partial capture
09-11 00:13 40m +4 / - DH1KJ - / -6 2 ✓ Closing fragment
09-11 00:12 40m +2 / - HZ1TT - / - 3 Partial capture
09-07 23:31 40m -6 / - 5N0YEN - / -24 8 ✓ Closing fragment
09-07 23:12 40m -2 / - G1ISP/P - / - 4 Partial capture
09-07 00:36 40m +8 / - SP7TF - / -7 2 ✓ Closing fragment
09-07 00:35 40m - / +1 R2BQM -7 / - 3 Partial capture
09-07 00:34 40m +7 / -8 IU2HUQ -2 / -13 4 ✓ Full exchange observed
09-07 00:34 40m - / - UN9LCW -13 / - 4 Partial capture
09-07 00:33 40m +8 / -5 EB3JT -9 / -8 3 ✓ Full exchange observed
09-07 00:32 40m - / - UR4QWW -2 / - 2 Partial capture
09-07 00:32 40m +4 / - UX1VT - / 0 2 ✓ Closing fragment
09-07 00:32 40m - / - RX9WM -5 / - 2 Partial capture
09-07 00:32 40m - / - UK8FF -10 / - 8 Partial capture
09-07 00:32 40m - / -14 UK8OM +4 / - 4 Partial capture
09-07 00:31 40m - / 0 R2BQM -10 / - 2 Partial capture
09-07 00:31 40m +4 / -3 DL9KM -6 / -5 4 ✓ Full exchange observed
09-07 00:30 40m +5 / -4 F1PBZ 0 / -2 4 ✓ Full exchange observed
09-06 23:43 40m +5 / - SN100PKP - / - 5 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
002415  +2 2252  UR1CCT N1SV +03
002430  -5 1587  N1SV UR1CCT R+11
002445  +0 2253  UR1CCT N1SV RR73
002500  -2 1587  N1SV UR1CCT 73
002515  -2 2252  CX2SA N1SV -17 (x2)
230530  -2 1534  N1SV PD0LBY JO22 (x2)
000445  +6 2367  3A2MW N1SV FN42 (x7)

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.

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