7Z1MM — reception at SO8OO

Observed FT8 message patterns

Attributed sample

461 messages

Active dates

17 UTC dates

Estimated median S/N

-6 dB

Estimated 10th-90th percentile

-16 to +3 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 49, moderate (-15 to -9 dB) 118, strong (≥ -8 dB) 294.

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 7Z1MM 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 7Z1MM

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

LL45 · 208 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

3,581 km (approx.)

Last such locator decoded

2026-09-23 10:32 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
175030 -13 1540  7Z1MM PA0WDN JO22 (x5)
175245  +8 1540  7Z1MM YL3MM KO27
175300 -15 1540  7Z1MM PA0WDN JO22
175315  +5 1540  7Z1MM YL3MM KO27
175330 -18 1540  7Z1MM PA0WDN JO22
175345  -5 1540  7Z1MM YL3MM KO27 (x2)
175430 -16 1540  7Z1MM PA0WDN JO22
175445  +4 1540  7Z1MM YL3MM KO27
175500 -14 1540  7Z1MM PA0WDN JO22 (x2)

UTC    dB Audio  Message
114730 -19 1066  HA3FMR 7Z1MM RR73
114800 -17 1066  CQ 7Z1MM LL45
114830 -11 1066  UA3ATQ 7Z1MM -13
115000 -20 1066  EU6MM 7Z1MM -02 (x2)
115100 -20 1066  CQ 7Z1MM LL45                         a1 (x4)
111915  -6 2704  7Z1MM EA3AKY JN01
111930  -3 2866  SM3YRD 7Z1MM -08 (x2)
103115 -21 1870  EU4U 7Z1MM +07
103215 -24 1870  CQ 7Z1MM LL45
103445 -24 1871  R3VE 7Z1MM -12

UTC    dB Audio  Message
060545  +2 2854  7Z1MM F1MXE R-03
060600  -1 2854  F1MXE 7Z1MM RR73
060615  +4 2854  7Z1MM F1MXE 73
060630  -1 2854  CQ 7Z1MM LL45 (x2)
060715  -2 2846  7Z1MM UA3NFG LO28
060745 -12 2854  7Z1MM F5PBG IN78
060800  -1 2853  PH7GD 7Z1MM -11
060830  +0 2853  CQ 7Z1MM LL45 (x2)
061015  -9 2854  7Z1MM IU7VOL JN81 (x5)

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.