JA3FYC — reception at SO8OO

Observed FT8 message patterns

Attributed sample

573 messages

Active dates

66 UTC dates

Estimated median S/N

-11 dB

Estimated 10th-90th percentile

-20 to 0 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 152, moderate (-15 to -9 dB) 195, strong (≥ -8 dB) 226.

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 JA3FYC 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 JA3FYC

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

PM85 · 73 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

8,586 km (approx.)

Last such locator decoded

2026-10-25 21:18 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
194615 +10  941  JA3FYC US8KA R-23 (x5)
205300 -18  702  HA5UA JA3FYC -12 (x4)
205615 +20  701  JA3FYC HA5UA R-14 (x2)
211900 -14 3001  PY2WC JA3FYC -17 (x2)
212430 -17  347  VR2ZXP JA3FYC -02
212800 -17  393  PY2WC JA3FYC -13

UTC    dB Audio  Message
193900 -10 1331  JA3FYC IT9KSS R-16 (x2)
202400 +14  704  JA3FYC OM4MM R-25 (x2)
203415  +8 2712  JA3FYC HB9OAB R-22 (x3)
202645  +0 2094  JA3FYC LA9GX R-15 (x2)
203130  -3 1087  JA3FYC RA3THN R-15
192400  +8  930  JA3FYC IK4ADE JN54 (x2)
184515  +1 1448  JA3FYC UX0LL KO50 (x3)

UTC    dB Audio  Message
095630 -20 2131  JA3FYC F6CEE IN94 (x2)
083545  +9 2435  JA3FYC HB9TOC R-25 (x2)
102830 -24 1769  JA3FYC EY8BL R-02
073615 -13 1156  US5ZFT JA3FYC RR73
073645 -15 2071  R2EA/P JA3FYC R-20 (x2)
073815 -14 1050  UA9FLJ JA3FYC RR73
073830 -16 1052  JA3FYC UA9FLJ 73
083030 -18 1601  JA3FYC TC7ATA -12 (x2)
073430  -2 2948  JA3FYC 7Q5MLV +00
094815  -5 2631  JA3FYC EA6ABF JM19 (x2)

UTC    dB Audio  Message
174615 -14 1693  JA3FYC IK6VXO R-26 (x6)
204800  -6 1359  JA3FYC SV5BYP -23
204800  +6 2910  JA3FYC F4GIH JN08
204830  -7 1359  JA3FYC SV5BYP RR73
205645  +3 2581  JA3FYC EA6ABF R-11 (x2)
210045 -14  796  JA3FYC VI40EUDXF R+00
175430 -11 2592  JA3FYC 9A2JK R-16
191615 -14  778  JA3FYC HB0PA R-10
181900  -8 2932  JA3FYC EA3NE -20

UTC    dB Audio  Message
191145  -9 2830  JA3FYC PD1PET R-04 (x2)
191215 -14 1308  JA3FYC ON4CJU R-04
191245  -6 2831  JA3FYC PD1PET R-04
191245 -15 1308  JA3FYC ON4CJU 73
191315 -12 2830  JA3FYC PD1PET 73
194030 -12 1105  DJ2MS JA3FYC -16 (x2)
194515 -12 2112  JA3FYC IU5VMV JN53 (x4)
175800  -8 2666  JA3FYC ZS6HON R-20 (x3)

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.