OZ4MK — reception at SO8OO

Observed FT8 message patterns

Attributed sample

472 messages

Active dates

17 UTC dates

Estimated median S/N

-8 dB

Estimated 10th-90th percentile

-18 to +2 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 73, moderate (-15 to -9 dB) 152, strong (≥ -8 dB) 247.

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 OZ4MK 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 OZ4MK

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

JO65 · 271 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

855 km (approx.)

Last such locator decoded

2026-11-07 17:19 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
171745  -2  863  OZ4MK RK6OQ KN87
171800  +7  862  RK6OQ OZ4MK -20 (x2)
171900  +9  862  CQ OZ4MK JO65
171930  +9  862  RA3ZDU OZ4MK -04
171945  -7  862  OZ4MK RA3ZDU R-03
172000 +11  862  RA3ZDU OZ4MK RR73
172015  -7  860  OZ4MK RA3ZDU 73
172030  +6  862  DK1MBY OZ4MK -11
172100  -4  862  DO9KD OZ4MK -16 (x2)
172200  +4  862  DK1MBY OZ4MK RR73
172230  -2  862  RA1QCX OZ4MK -12 (x2)
172330  +2  862  R2EN OZ4MK R-13

UTC    dB Audio  Message
161915  -7 2189  OZ4MK HA0GZ KN07
161930 -11 2099  HA0GZ OZ4MK -01
161945  -7 2189  OZ4MK HA0GZ R-09
162000 -13 2099  HA0GZ OZ4MK RR73
162015  -6 2189  OZ4MK HA0GZ 73
162030 -15 2099  OS4K OZ4MK R-04 (x2)
162115  -5 1338  OZ4MK UT8SQ KN28
162130 -13 2099  UT8SQ OZ4MK -11
162145 -14 1338  OZ4MK UT8SQ R-09
162200 -13 2098  UT8SQ OZ4MK RR73
162215 -14 1338  OZ4MK UT8SQ 73
162230 -11 2099  HA0GZ OZ4MK JO65
162300 -11 2099  TA4SSK OZ4MK JO65
162345 -16 2098  TC0TR OZ4MK JO65

UTC    dB Audio  Message
093730 -24 1739  OZ4MK CU2AP RR73
122445  -7  756  OZ4MK CR7BRV -05 (x2)
123115  +0 2316  OZ4MK ZB2JK +04 (x2)
124830 -14 2563  OZ4MK ZS6HON -12
173415 -14 2079  OZ4MK CN8WK -11 (x2)

UTC    dB Audio  Message
024500 +13  682  OZ4MK LA9GX -06 (x5)

UTC    dB Audio  Message
071630  +2 2208  OZ4MK 9A5E RR73
071645 -13 1045  9A5E OZ4MK 73
071700 -10 1045  OZ4MK F5IXN JN23 (x4)
094500 -10 2178  SP5ZTM OZ4MK JO65

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.