F4VTR — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

4,628 messages

Active dates

52 UTC dates

Estimated median S/N

-3 dB

Estimated 10th-90th percentile

-14 to +8 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 343, moderate (-15 to -9 dB) 817, strong (≥ -8 dB) 3,468.

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 F4VTR 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 F4VTR

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

JN25 · 3,488 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,346 km (approx.)

Last such locator decoded

2026-10-01 19:18 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.

Recent FT8 messages decoded at SO8OO

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

UTC    dB Audio  Message
202600  +5  540  IT9KWL F4VTR JN25 (x2)
202745  +2  795  ES0RY F4VTR JN25 (x3)
180745 -11 2178  YD2DFO F4VTR JN25 (x4)
184030  -7 1559  PA/DL9KV/MM F4VTR R-25
190600  -7 1124  YC2BUZ F4VTR JN25 (x5)

UTC    dB Audio  Message
132330 -21 1713  A61FJ F4VTR JN25 (x2)
132415 -21 1713  F4VTR A61FJ -09
140230 -22 1709  A61FJ F4VTR JN25 (x2)
140515 -23 1709  F4VTR A61FJ RR73
190115 -18 2122  EU6AX F4VTR R-19 (x3)
114030 -11 2018  5B4AHL F4VTR JN25 (x4)
102500  +3 2408  F4VTR UN6LN -11 (x2)

UTC    dB Audio  Message
032315 -10  622  EI4GAB F4VTR JN25
032330  +4  621  F4VTR EI4GAB -20
032345 -12  622  EI4GAB F4VTR R+08
032400  +2  622  F4VTR EI4GAB -20
034530 -20 1984  AD9GE F4VTR JN25 (x5)
034915 -11 2804  W4PSK F4VTR JN25
034930  -4 2804  F4VTR W4PSK -25
034945  -8 2804  W4PSK F4VTR R-09
035000  +0 2804  F4VTR W4PSK RR73
035015  -7 2804  W4PSK F4VTR 73
052245 -15  503  SP100PKP F4VTR JN25

UTC    dB Audio  Message
024600 -21 1184  IW9FRA F4VTR JN25
212830  -9  797  F4VTR HB9HFR -06 (x2)
033730  -3 2102  F4VTR HB9CXZ -02 (x2)
033815 -23 2102  HB9CXZ F4VTR 73
211445  -3 2748  F4VTR LX1JX -24 (x2)
001245  -8  845  F4VTR OZ9GA -19 (x2)
013845 -24 1923  SV4FFK F4VTR JN25 (x2)
033115 -23 1808  EA8BS F4VTR JN25
042215  -1 2105  F4VTR 9A6OY -21 (x2)

UTC    dB Audio  Message
175915  +7 1046  IK8EQG F4VTR JN25
183245  +0 2760  TK/F6FDY F4VTR JN25 (x5)
185930  -1 2785  HK3G F4VTR JN25 (x2)
191245 -10 2023  UA2FHZ F4VTR R+05
193930  -3 1893  KS2D F4VTR R-22 (x3)
200245 +15  582  <...> F4VTR JN25 (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.