Z38DX — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

291 messages

Active dates

11 UTC dates

Estimated median S/N

+8 dB

Estimated 10th-90th percentile

-3 to +15 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 2, strong (≥ -8 dB) 289.

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 Z38DX 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 Z38DX

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

KN01 · 191 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

940 km (approx.)

Last such locator decoded

2026-09-12 18:25 UTC

Other locator fields attributed to this token: KN02 (1).

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
175200 +13 1176  YE4FNN Z38DX 73
175215 +26 2690  Z38DX SP9WZS JO90
175230  +6 1175  5W1SA Z38DX KN01
175245 +11 1175  Z38DX DO9SAM JO61
175300  +3 1175  5W1SA Z38DX KN01 (x2)
175445 +24 2690  Z38DX SP9WZS JO90
175730  +5 1178  5W1SA Z38DX KN01 (x7)
231800 -11 1457  Z38DX R7KKO -14

UTC    dB Audio  Message
203530 -15 1600  Z38DX MI6YHI R-14
203530 -15  598  Z38DX DK8HC JO42
203600  +8  930  Z38DX UR5EDX KN78
203600 -16 1600  Z38DX MI6YHI 73
203700  +8  930  Z38DX UR5EDX R+00
203700 -17 2079  Z38DX GM0DEQ IO75
203730 +11  930  Z38DX UR5EDX 73
203730 -17 2079  Z38DX GM0DEQ IO75 (x3)
204000 -13 1732  Z38DX EA3HCJ JN01 (x3)
182430  -2 2010  KH8WW Z38DX KN01 (x2)

UTC    dB Audio  Message
194200  -7  867  Z38DX M0RLC JO02

UTC    dB Audio  Message
201800  +9 2526  Z38DX UA6YW -09
201815  +9 2416  T77RN Z38DX KN01
201830  +2  440  Z38DX T77RN +26
201845  -1 2415  T77RN Z38DX R-07
201900  -2  440  Z38DX T77RN RR73
202000 -18 1084  Z38DX RX3DTN KO85
202015  -4 2417  LZ1WV Z38DX KN01 (x4)
232245  -6 2457  VP5G Z38DX KN02 (x3)
221415  -3  579  Z38DX DL3NA JO42 (x2)

UTC    dB Audio  Message
111845  -9 2364  Z38DX MD0CCE RR73
111915 -17 1186  Z38DX PE9JAN JO22 (x2)
114715 -19 1663  Z38DX F4FSY -06 (x3)
115645  -5 1214  Z38DX F5PGA JN24 (x4)
120245  +2  689  Z38DX RC6OU -20 (x3)
120745 -23 1550  Z38DX TA2R KN41 (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.