OH3GKA — reception at SO8OO

Observed FT8 message patterns

Attributed sample

908 messages

Active dates

44 UTC dates

Estimated median S/N

0 dB

Estimated 10th-90th percentile

-9.9 to +7.9 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 9, moderate (-15 to -9 dB) 111, strong (≥ -8 dB) 788.

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 OH3GKA 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 OH3GKA

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

KP20 · 491 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,192 km (approx.)

Last such locator decoded

2026-10-07 19:01 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
232630 -11  690  NP4PR OH3GKA KP20
233030  -7  766  YC2BUZ OH3GKA KP20 (x2)
233200  -9  766  HJ6UMR OH3GKA KP20
185845  -3  572  VJ6X OH3GKA KP20 (x3)
190130 -11  924  SQ8AA OH3GKA KP20 (x2)
205530  -9 1540  OH3GKA M9LDX +01
205830  -8  845  OH3GKA TA1CQ -18 (x2)
194245  -9  855  OH3GKA DK2GB JO31 (x2)
185545 -14  998  OH3GKA MW7HZQ -10

UTC    dB Audio  Message
210330  +2  690  OH2BGD OH3GKA 73
210415  -2 1262  OH3GKA YO4BXX KN44
210430  +3  690  YO4BXX OH3GKA -02
210445  -4 1262  OH3GKA YO4BXX R-07
210500  +6  691  YO4BXX OH3GKA RR73
210515  -3 1262  OH3GKA YO4BXX 73
210700  +6  690  YL2AO OH3GKA KP20 (x3)
210815  +8 2503  OH3GKA YL2AO +08
210830  +4  690  YL2AO OH3GKA R+13
210845 +10 2503  OH3GKA YL2AO RRR
210900  +9  690  YL2AO OH3GKA 73
180700  +5  592  IZ1GCS OH3GKA KP20 (x2)

UTC    dB Audio  Message
215345  -3  728  LZ123RF OH3GKA KP20 (x4)
220000  -3  728  IS0LLL OH3GKA KP20
220015  -8  678  OH3GKA IS0LLL -10
220030  -3  728  IS0LLL OH3GKA R-03
220045  -6  679  OH3GKA IS0LLL RR73
220100  -1  728  IS0LLL OH3GKA 73
220130  -2  729  TM4GGR OH3GKA KP20 (x3)
220545  -1  728  F4NEM/P OH3GKA KP20 (x3)

UTC    dB Audio  Message
183615 -15 1463  OH3GKA R4FDW -07 (x2)
183715 -17 2167  OH3GKA TM0BSM RR73
183715 -13 1463  OH3GKA R4FDW -07
191600  -6 1115  OH3GKA CS8ABF +03 (x2)
212000 -17 2432  OH3GKA CX4BAN -12 (x3)
234345  -1  723  OH3GKA XQ1KK -14 (x2)
234815  +7  462  OH3GKA PW8BR -08 (x2)
203615 -17 2034  OH3GKA F4GRW +02 (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.