DJ4MM — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

370 messages

Active dates

18 UTC dates

Estimated median S/N

+4 dB

Estimated 10th-90th percentile

-7 to +13 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 24, strong (≥ -8 dB) 340.

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 DJ4MM 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 DJ4MM

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

JO52 · 210 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

803 km (approx.)

Last such locator decoded

2026-09-17 18:07 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
213515  +3 1942  RI1FJZ DJ4MM JO52 (x8)
180745  -4 1942  <...> DJ4MM JO52
180800 -10 1146  DJ4MM RD1A/7 -06
180815  -4 1942  <...> DJ4MM R-06
180900 -19 1941  DJ4MM IU3RRX JN55 (x2)
180945 -12 1942  IU3RRX DJ4MM RR73
181000 -18 1942  DJ4MM IU3RRX 73

UTC    dB Audio  Message
161615  -4 1964  KH8WW DJ4MM R-15 (x15)

UTC    dB Audio  Message
211445  +1 1946  RI1FJZ DJ4MM JO52 (x15)

UTC    dB Audio  Message
155515  -9 1879  Z68PX DJ4MM R-15 (x2)
155600  -7  227  DJ4MM RR73; IW0BSQ <...> -08
180730  -9 1878  SP8XGU DJ4MM JO52
180745  -2  885  DJ4MM SP8XGU -06
180800  +3 1101  SP8XGU DJ4MM R-05
180815  +2  885  DJ4MM SP8XGU RR73
180830  +5 1101  SP8XGU DJ4MM 73
181015  -3 1101  SN40KZE DJ4MM JO52
181030 -15 1335  DJ4MM 9A60CBM -02
181045  +0 1101  SN40KZE DJ4MM R-03
181145  +7 1101  EC5M DJ4MM JO52 (x4)

UTC    dB Audio  Message
083100 -11 2520  DJ4MM <...> 73
083415  +5  498  DJ4MM TK5K +19 (x2)
074630 -23 1771  DJ4MM EX7CQ -21

UTC    dB Audio  Message
190745 +13 1944  XU7O DJ4MM JO52 (x4)
190930 -10  485  DJ4MM XU7O +01
190945 +12 1944  XU7O DJ4MM R+04 (x2)

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.