OK1JMB — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

1,287 messages

Active dates

28 UTC dates

Estimated median S/N

-1 dB

Estimated 10th-90th percentile

-17 to +11 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 155, moderate (-15 to -9 dB) 232, strong (≥ -8 dB) 900.

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 OK1JMB 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 OK1JMB

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

JN78 · 773 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

518 km (approx.)

Last such locator decoded

2026-09-14 05:42 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
050645  +8 1736  R2FBW OK1JMB R-19
050700 -14 2049  OK1JMB R2FBW RR73
050715  +6 1735  R2FBW OK1JMB R-19
050730 -14 2050  OK1JMB R2FBW RR73
050745  +7 1736  R2FBW OK1JMB R-19
050800  -9 2049  OK1JMB R2FBW RR73
050815  +6 1736  R2FBW OK1JMB 73
053800  +4 1251  II8IHBC OK1JMB JN78 (x3)
054030  +4 1233  SV8/F6BLP OK1JMB JN78 (x5)

UTC    dB Audio  Message
223845  +8 1562  IK6RAM OK1JMB -12
223900 -12  994  OK1JMB IK6RAM JN62
223915  +6 1562  IK6RAM OK1JMB -12
223930 -11  994  OK1JMB IK6RAM R-02
223945  +6 1562  IK6RAM OK1JMB RR73
224000 -11  994  OK1JMB IK6RAM 73
224015  +5 1561  ON4MAP OK1JMB -11 (x9)

UTC    dB Audio  Message
200215  -9 1684  SO100PKP OK1JMB R-11
200245 -10 1683  CQ OK1JMB JN78
200315 -10 1683  OK2USM OK1JMB -15 (x2)
200400 -11 1684  OK1JMB OK2USM R+05
200415  -6 1683  OK2USM OK1JMB RR73
200430 -13 1684  OK1JMB OK2USM 73
200445 -10 1683  CQ OK1JMB JN78 (x2)
200600 +18  443  OK1JMB SP9UPH JO90
200600 -17 2551  OK1JMB F5MYK IN97
200600 -22 2028  OK1JMB DL2JLB JO60
200630 +16  443  OK1JMB SP9UPH JO90 (x2)
200700 -18 2028  OK1JMB DL2JLB JO60

UTC    dB Audio  Message
103300 -21 2127  OK1JMB IT9ECY -09
103330  -9 2565  OK1JMB SV1EKI KM18
105215 -12  895  OK1JMB EA3CU JN11 (x3)
130700 -20 1585  OK1JMB CT7AUT IM67 (x2)
072945  -7 1930  HA5DI OK1JMB R-14
073045 -17 1926  DJ3HW OK1JMB JN78
073100  -7 1205  OK1JMB DJ3HW -09 (x3)
073530  +0 2283  OK1JMB HB9ACA -16
092800  -8 2297  OK1JMB IQ4JO JN63 (x2)

UTC    dB Audio  Message
200000  -3 1906  OK1JMB M0BEW +02 (x2)
200430 -20 1792  OK1JMB EA5KV -15 (x6)
201200  -2 1907  OK1JMB F4ACR IN96 (x4)
054915 -20 1698  OK1JMB IS0KNG RR73 (x2)
053745 -10 2011  OK1JMB SV1GYN KM17

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.