E75FM — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

5,741 messages

Active dates

59 UTC dates

Estimated median S/N

-2 dB

Estimated 10th-90th percentile

-11.9 to +8 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 170, moderate (-15 to -9 dB) 843, strong (≥ -8 dB) 4,728.

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 E75FM 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 E75FM

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

JN93 · 4,702 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

747 km (approx.)

Last such locator decoded

2026-09-11 08:59 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
084900 -16 3146  CQ E75FM JN93 (x13)
085800 -18 3146  SP100PKP E75FM JN93
085930 -20 3146  <DM0CRACY> E75FM JN93

UTC    dB Audio  Message
032545 +11 2989  <...> E75FM JN93 (x3)
032715  +6 2989  CQ E75FM JN93 (x12)

UTC    dB Audio  Message
043230  +1  517  E75FM F6ICX +04
043245  +4 2864  F6ICX E75FM R-14
043300  -2  517  E75FM F6ICX RR73
043315  +9 2864  F6ICX E75FM R-14 (x2)
043400  -3  517  E75FM F6ICX RR73
043415  +3 2864  F6ICX E75FM 73
043430  -7  517  E75FM F6ICX 73
043530  +3 2864  CQ E75FM JN93 (x7)

UTC    dB Audio  Message
034730  -2 2981  CQ E75FM JN93                         a1 (x2)
034815  -3  690  E75FM IS0BOZ -18
034830  -1 2981  IS0BOZ E75FM R-10
034845  -3  690  E75FM IS0BOZ RR73
034900  +1 2981  IS0BOZ E75FM 73
035015  -4 2981  CQ E75FM JN93                         a1

UTC    dB Audio  Message
062630  +1  459  E75FM M8KKH R-10 (x4)
120630  -8 2762  E75FM GB4LD -07 (x3)
064345  -7 2392  E75FM PD1WMD JO21 (x3)
094930 -16 3117  CQ E75FM JN93 (x5)

UTC    dB Audio  Message
124300 -10  996  E75FM PD2WL -10 (x2)
124345  -6 2968  CQ E75FM JN93
124400 -10  996  E75FM PD2WL -10 (x4)
124545  -5 2968  PD2WL E75FM R-20 (x2)
125500  -4 1080  E75FM DF7EE JO40
125730  -6 2159  E75FM DO5WG JO40 (x2)
125830  -6 2364  E75FM ON7HM R-21
125830 +11 2970  E75FM DO5WG 73
125900  -7 2364  E75FM ON7HM 73

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.