EC3A — reception at SO8OO

Observed FT8 message patterns

Attributed sample

56,978 messages

Active dates

116 UTC dates

Estimated median S/N

-12 dB

Estimated 10th-90th percentile

-21 to -1 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 18,010, moderate (-15 to -9 dB) 19,449, strong (≥ -8 dB) 19,519.

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 EC3A 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 EC3A

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

JN00 · 40,221 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,927 km (approx.)

Last such locator decoded

2026-10-22 07:31 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
075245 -10 2184  EC3A M0OXO R-05 (x2)
075445  -5 2298  EC3A HA9MDP R-13 (x3)
075845  -5  291  EC3A DL1CBH R-01 (x2)
080715  -9 1726  EC3A DD0IPA R-15 (x3)
081015  -1  789  EC3A DK8WQ R-03 (x2)
081545 -18  229  EC3A DF3RD 73
084445 -19 1388  EC3A M7IPY R-03
084545 -17 1722  EC3A ON6DZ 73

UTC    dB Audio  Message
001030 -17 1900  CQ EC3A JN00 (x13)
063445 -15 1103  EC3A F4FDR -06 (x2)

UTC    dB Audio  Message
054315 -14 1912  IK1AIL EC3A -10 (x2)
054445 -20 1912  CQ EC3A JN00
054515 -22 1912  IT9BYL EC3A -13 (x2)
054645 -22 1912  CQ EC3A JN00 (x2)
054745 -18 1912  IT9BYL EC3A -11 (x2)
055315 -23 1912  CQ EC3A JN00 (x4)
061430  -6 2354  EC3A IW0GYC R-07 (x2)

UTC    dB Audio  Message
161845  -3 1104  EC3A DN9RL R-21 (x2)
162145  -3 1855  EC3A OK1STK JO60
100900 -11  855  CQ EC3A JN00 (x8)
101300 -15  855  PD1PET EC3A -13 (x2)
101400 -13  855  CQ EC3A JN00 (x2)

UTC    dB Audio  Message
003830 -24 1625  4X1UF EC3A R-08
003845  -5 1221  EC3A 4X1UF -19 (x2)
003930 -24 1626  4X1UF EC3A R-08
003945  -5 1220  EC3A 4X1UF -19 (x7)
004300 -23 1571  4X1UF EC3A R-09
004315  -6 1221  EC3A 4X1UF -19 (x3)

UTC    dB Audio  Message
073500  -9 1815  EC3A G7RCQ IO91 (x2)
094515  -2 2224  EC3A TA1MB R-17 (x2)
095545  +1  848  EC3A DK8WQ JO40
095615  +3 1054  EC3A ON3MOH R-14
095615  +5  848  EC3A DK8WQ JO40
095645  -1 1054  EC3A ON3MOH R-14
095645  +3  848  EC3A DK8WQ JO40 (x2)
095745  +4 1054  EC3A ON3MOH R-14
095745  -1  848  EC3A DK8WQ JO40 (x2)
152415  +2 2224  R9YBW EC3A -16
145415 -22 1946  EC3A RA3AHN 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.