OM4AB — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

337 messages

Active dates

19 UTC dates

Estimated median S/N

+5 dB

Estimated 10th-90th percentile

-11 to +15 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 17, moderate (-15 to -9 dB) 27, strong (≥ -8 dB) 293.

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 OM4AB 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 OM4AB

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

JN98 · 259 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

258 km (approx.)

Last such locator decoded

2026-09-19 17:37 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
162945  -4 1082  AP2HA OM4AB JN98 (x4)
163215  +2  856  YE4FNN OM4AB JN98 (x7)
173545  +6 2528  KH8WW OM4AB JN98 (x4)

UTC    dB Audio  Message
172215 +12 2413  EX7CQ OM4AB JN98 (x15)

UTC    dB Audio  Message
162600 -17 2475  OM4AB F4LOB R-19
162615  -3 2476  BA4IE OM4AB -17 (x2)
162715  -2 2476  R9OON OM4AB -17 (x2)
160615 -14 1681  S79/DL2SBY OM4AB JN98 (x8)
161115  -9 2079  II6IALU OM4AB JN98
161315 -11 2141  OL900JAR OM4AB R-18

UTC    dB Audio  Message
124145  -9 2349  OM4AB M0SSK R-07 (x2)
124245  -9 2487  OM4AB PI50VPO R-16
104815  -4 2395  OM4AB D2ACE -16 (x2)
113845 -11 2543  OM4AB DD5GG JN39 (x3)
153600 -21 1994  OM4AB RC6OU 73

UTC    dB Audio  Message
113615 -16  802  OM4AB R4ADD -15

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.