R4FDQ — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

946 messages

Active dates

29 UTC dates

Estimated median S/N

-12.2 dB

Estimated 10th-90th percentile

-21 to +6 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 356, moderate (-15 to -9 dB) 211, strong (≥ -8 dB) 379.

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 R4FDQ 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 R4FDQ

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

LO33 · 69 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,771 km (approx.)

Last such locator decoded

2026-07-19 03:19 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
170730 -20 2035  BG7BVI R4FDQ -12
171515 -20 2035  UT7UJ R4FDQ -07
171830 -21 2036  UA2FFD R4FDQ -04
172145  -4 2035  R6YG R4FDQ -12 (x3)
172315  -9 2035  UT7UJ R4FDQ -06 (x8)
024030 -11  832  R4FDQ <...> R-14

UTC    dB Audio  Message
192045 -23 1588  R4FDQ M9MRX 73
194215 -12 2389  R4FDQ 9A7BB R-13 (x2)
180215  +5 2582  R4FDQ DM2HK JO62 (x6)
174345 -21 1958  R4FDQ UA3PTY 73
174800  -7 2555  R4FDQ EW8CW 73
174900 -12 2391  R4FDQ R2DVU R-04 (x2)
175500  -6 2365  R4FDQ UR7FM R-03 (x2)

UTC    dB Audio  Message
191345 -20 1492  A71UN R4FDQ RR73
191515 -20 1492  RU4B R4FDQ -03
191530  -6 2222  R4FDQ RU4B R-08
191545 -18 1492  RU4B R4FDQ RR73
191600  -7 2222  R4FDQ RU4B 73
192000  -1 1176  R4FDQ RY4D R+03
192015 -18 1492  RY4D R4FDQ RR73
192130  +2 1857  R4FDQ RZ6CO -09
192145 -18 1493  RV3X R4FDQ +04
192200  +0 1857  R4FDQ RZ6CO -09
192215 -17 1493  RZ6CO R4FDQ R-02
192230  +3 1857  R4FDQ RZ6CO RR73
192345 -15 1492  UA1RC R4FDQ R-26
192415  +2 1857  R4FDQ RZ6CO -15
192445 -15 1492  RW6HPS R4FDQ 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.