EC5M — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

17,418 messages

Active dates

64 UTC dates

Estimated median S/N

-11.9 dB

Estimated 10th-90th percentile

-20 to -1 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5,004, moderate (-15 to -9 dB) 6,328, strong (≥ -8 dB) 6,086.

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 EC5M 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 EC5M

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

IM98 · 12,663 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

2,203 km (approx.)

Last such locator decoded

2026-09-09 00:31 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
001330  -1 1525  CQ EC5M IM98
001345  -6  440  EC5M W4IEE EL89
001400  -6 1525  W4IEE EC5M -08
001415  -2  440  EC5M W4IEE R-12
001430  -1 1525  W4IEE EC5M RR73
001445  -3  440  EC5M W4IEE R-12
001500 -13 1525  W4IEE EC5M RR73
001545  -2  440  EC5M W4IEE 73
002215  -3 1484  CQ EC5M IM98 (x3)
002345 -11 1484  AC1SN EC5M -15 (x3)
003100  -8 1984  CQ EC5M IM98

UTC    dB Audio  Message
203330  -6 1406  EC5M DG1KFR 73
203345 -13  926  CQ EC5M IM98                          a1 (x4)
204615  -9 1417  EC5M SP1RKT JO84
205030  +7  849  EC5M DJ1OJ JN58
205045 -12  816  DJ1OJ EC5M -06
205100  +3  849  EC5M DJ1OJ R-01 (x2)
205145 -13  816  CQ EC5M IM98 (x5)

UTC    dB Audio  Message
045245 -10  679  CQ EC5M IM98 (x8)
051500 -22  608  AA7A EC5M -09
051745 -21 1001  EC5M EA3AKY JN01
055215 -13 1327  EC5M IN3ZWF JN56 (x4)
060915 -14 2496  EC5M F4FQY 73

UTC    dB Audio  Message
192945  -6 2031  CQ EC5M IM98
193015  -9 2031  DF2SL EC5M -11 (x2)
193100 -10  836  EC5M DF2SL R+02
193115  -5 2031  DF2SL EC5M RR73
193130 -10  837  EC5M DF2SL 73
193145  -3 2031  CQ EC5M IM98 (x3)
193345  -7 2031  PE1NGW EC5M -12 (x2)
194245 -16 1181  CQ EC5M IM98 (x4)

UTC    dB Audio  Message
153230  -4  934  EC5M DK3HV 73
085045 -18 1335  EC5M LZ1ZF KN22 (x3)
083730  -6 2015  EC5M IK7IMK -13 (x2)
091200 -19 1689  EC5M DL5NDD JN58 (x3)
073145 -14 2140  EC5M G4DBW R-10
190200 -16 1057  EC5M UR3HC -05 (x2)
185700 -18 1178  EC5M DO1BWS -09
104130 -19 1389  EC5M DL5GE JO31 (x2)

UTC    dB Audio  Message
212515  -4  610  EC5M UT3XM -20 (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.