N4DJJ — reception at SO8OO

Observed FT8 message patterns

Attributed sample

13 messages

Active dates

4 UTC dates

Estimated median S/N

-20 dB

S/N percentile sample

Too small

Recurring-pattern threshold

Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 12, moderate (-15 to -9 dB) 1, strong (≥ -8 dB) 0.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with N4DJJ 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 N4DJJ

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

EL96 · 5 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

8,634 km (approx.)

Last such locator decoded

2026-10-02 01:37 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
234945  +5 2533  N4DJJ ON8BB JO21 (x2)
003915  -8 2351  N4DJJ UT9NA KN49 (x3)
004345  +5 1808  N4DJJ DL1OBF -16 (x2)
001530  -6 2335  N4DJJ F5MYK -13 (x4)
235330  -8 1483  N4DJJ DD7EE -10 (x2)
014545 -12 1734  N4DJJ F5RMK -19 (x2)

UTC    dB Audio  Message
013400  -9 1331  N4DJJ G8KHF 73
013715 -23 1400  HA1BF N4DJJ EL96 (x2)
002845 -14  592  RC7RDB N4DJJ -02
012900 -13 2490  N4DJJ OA4ENG RR73
013915 -10 2173  N4DJJ SV3AUW -18 (x4)
000900 -18 1260  N4DJJ F4ANC JN25 (x3)
005945 -20 1090  N4DJJ IT9CMZ R-23 (x2)
010215  +2  807  N4DJJ F4FPR IN88

UTC    dB Audio  Message
003700  +3 2172  N4DJJ GW8DX -19 (x4)

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.