IZ4AFM — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

774 messages

Active dates

56 UTC dates

Estimated median S/N

+2 dB

Estimated 10th-90th percentile

-10 to +15.3 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 23, moderate (-15 to -9 dB) 78, strong (≥ -8 dB) 673.

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 IZ4AFM 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 IZ4AFM

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

JN64 · 197 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

897 km (approx.)

Last such locator decoded

2026-09-17 22:49 UTC

Other locator fields attributed to this token: IN64 (2).

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
223345  -4  249  KC1WSJ IZ4AFM JN64 (x4)
223845 -18  249  ON1JP IZ4AFM R-12 (x2)
224115 -16  249  K8OCN IZ4AFM -16 (x2)
224530 -15  250  CT3IQ IZ4AFM JN64 (x2)
224715 -12 1700  IZ4AFM EC3A -17 (x2)
224900 -18  249  KF9UG IZ4AFM JN64 (x2)
221745 -11 1531  IZ4AFM OS4K +18

UTC    dB Audio  Message
225915  +1  467  BA3QIQ IZ4AFM RR73
225930  -3  467  IZ4AFM KJ1R FN32
225945  +2  467  KJ1R IZ4AFM -20 (x2)
230115  +9  467  CQ IZ4AFM JN64
230130  -6  465  IZ4AFM WB8YJF -05
230145  +0  467  WB8YJF IZ4AFM R-09
230200  -5  467  IZ4AFM WB8YJF RR73
230215  +1  467  WB8YJF IZ4AFM 73
075600 +17  393  VK3EVE IZ4AFM JN64
211915 -15 2283  IZ4AFM KB3Z FN20 (x3)
071115  +7  306  VK5PJ IZ4AFM JN64 (x2)

UTC    dB Audio  Message
130415  +0 2586  SC9WWA IZ4AFM -20 (x2)
134115 -15 1839  EG4WWA IZ4AFM -10 (x2)
134245 -13 1839  GB2WWA IZ4AFM +00 (x4)
134730  -2 1812  8A1WWA IZ4AFM -22 (x2)
142945  +7  484  SN4WWA IZ4AFM -18
102345 -13  987  IZ4AFM PE9JAN JO22
102345  -7  442  IZ4AFM PA3BMB JO22
102415  -7  987  IZ4AFM PE9JAN JO22 (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.