R4FV — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

2,066 messages

Active dates

54 UTC dates

Estimated median S/N

-3 dB

Estimated 10th-90th percentile

-14 to +9 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 134, moderate (-15 to -9 dB) 426, strong (≥ -8 dB) 1,506.

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 R4FV 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 R4FV

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

LO22 · 710 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,634 km (approx.)

Last such locator decoded

2026-09-19 18:58 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
184615  +2  803  EH5FVP R4FV LO22
184745  +8 2368  RV6G/P R4FV LO22 (x3)
185500  -6 1658  EA7UW R4FV LO22
185645  +0  514  OH3DJP R4FV LO22 (x3)
185815  +1  805  EH5FVP R4FV LO22
185830  +1  804  R4FV EH5FVP -07
185845  +1  804  EH5FVP R4FV R-18
185900  -2  804  R4FV EH5FVP RR73
185915  -3  804  EH5FVP R4FV RR73
190100  -6 1691  A41DV R4FV R-12 (x2)

UTC    dB Audio  Message
180445 +16  836  R4FV 9A3TGT 73
180530  -8  989  OZ7CL R4FV -18
180545  -6  989  R4FV OZ7CL R-04
180600  +5  990  OZ7CL R4FV RR73
180615  -7  989  R4FV OZ7CL 73
181015  -1 1106  R4CBF R4FV -10
181245 -13 1596  CQ R4FV LO22
181315  -2 1594  R4CBF R4FV -09
181345  -6 1594  CQ R4FV LO22                          a1
181415  -4  855  UB8CQC/P R4FV -13 (x2)
181630  -6 1455  R2DQC R4FV -09 (x2)
181845  +0  742  UA3ATQ R4FV -10
182115  +0  741  CQ R4FV LO22

UTC    dB Audio  Message
193315  -8 1067  R4FV R6ML LN17 (x5)
193545 -10  952  R4FV RA1AGX KO49 (x3)
194400  -6 1598  R4FV UA3ECJ 73
194930  -6 1496  R4FV RK3QA R-01
193315 -20 1190  RV6HE R4FV R-19 (x2)
193415 -20 1190  CQ R4FV LO22 (x2)
194230 -24 1642  R4FV R2ATY RR73

UTC    dB Audio  Message
052030 +15  821  CQ R4FV LO22 (x3)
123900  +4 1380  HL5JYS R4FV -21 (x2)
124030  +5 1637  <...> R4FV -09
124315  -1 1822  R9OBJ/P R4FV RR73
200630 -14  916  CQ R4FV LO22
200945 -21 1408  AA3B R4FV -12
160500  -9 2688  R4FV M1WLK -17 (x3)
160700 -17 2304  R4FV BG7BMG RR73 (x2)
161230 -24 1566  R4FV DB1EF JO41

UTC    dB Audio  Message
071130 -12 1651  R4FV RA6HIH 73
071730 -10  379  R4FV <...> R-08
100400 -16 1545  TK5K R4FV LO22
100900 -15 1545  RK4UZ R4FV LO22 (x2)
101230 -18 1472  UA9QFF R4FV R-07 (x2)
101815 -17 1060  R9FF R4FV -09
103415  -8 1692  R4FV F4FSY -15 (x3)
073930 -17 1438  R4FV RZ6L KN97 (x2)
081215 -12  491  R4FV IK4LZH 73
081315 -11  983  R4FV UA6HBJ RR73

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.