S53F — reception at SO8OO

Observed FT8 message patterns

Attributed sample

284 messages

Active dates

14 UTC dates

Estimated median S/N

-3 dB

Estimated 10th-90th percentile

-17 to +9 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 40, moderate (-15 to -9 dB) 40, strong (≥ -8 dB) 204.

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 S53F 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 S53F

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

JN75 · 80 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

708 km (approx.)

Last such locator decoded

2026-10-27 19:12 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
183900 -10 1867  S53F LZ1SAD R-04
183915 -11 1500  LZ1SAD S53F RR73
183930  -7 1867  S53F LZ1SAD 73
183930 -18 1600  S53F HB9DWR JN37
183945 -13 1499  HB9DWR S53F -14
184000 -11 1698  S53F SP4HXV -08
184000 -17 1600  S53F HB9DWR R-07
184015 -15 1499  HB9DWR S53F RR73
184030 -22 1600  S53F HB9DWR 73
184045  -9 1499  SP4HXV S53F R-05
184100 -17 1698  S53F SP4HXV RR73
184115  -7 1499  SP4HXV S53F 73
194100 -24 1905  S53F SP2BDR 73
194415 -17 1545  S53F DK6AH JN48 (x2)

UTC    dB Audio  Message
191345  -6 2147  OE9GWV S53F RR73
191400  -4 2257  S53F SQ5N KO02
191400 -20 1265  S53F OE9GWV 73
191415  -5 2147  SQ5N S53F -04
191430  +9 2257  S53F SQ5N R-08
191430 -10 1686  S53F HB9CXZ JN46
191445  -4 2147  SQ5N S53F RR73
191500  +9 2257  S53F SQ5N 73
191500  -8 1983  S53F IZ8VYU JN71
191500  -3 1686  S53F HB9CXZ JN46 (x2)
191600  -7 1983  S53F IZ8VYU JN71
191600  -3 1686  S53F HB9CXZ 73
191630  -5 1983  S53F IZ8VYU R-02 (x2)

UTC    dB Audio  Message
055230  -1 1683  SQ100PKP S53F -13
055330  +2 1967  <PJ2/W4IPC> S53F -13 (x6)
030145 +10 1622  V47YA S53F -21 (x6)
030600 -16 2705  S53F N5DG EM20
030615 +20  418  N5DG S53F -25

UTC    dB Audio  Message
044030  +6 2550  J38DX S53F RR73
044045 -15 1494  S53F UR9QQ KN77
044130  +4 2379  J38LD S53F -07 (x2)
044230  -3 2379  F5PBG S53F -05
045445 +13  933  D44TWO S53F -05 (x9)
205315 -10 1535  S53F PD0LBY 73

UTC    dB Audio  Message
080115  -2 1389  S52W S53F +06
204845  -1 1405  VY2SHL S53F JN75
205415 -13 1305  S53F PP7GB -14 (x2)
115615 -10 1882  RX6DA S53F JN75
115700  +5 1194  S53F RX6DA -09 (x2)
115730 -10 2351  S53F PD9FLX JO22
115730 -20 1881  S53F PA2AMJ JO33
115800  -5 2350  S53F PD9FLX -12
115815  -2 1882  PD9FLX S53F 73
115830 -20 1881  S53F PA2AMJ JO33
115845  -3 1882  PA2AMJ S53F R JN75 (x2)

UTC    dB Audio  Message
135330 -17 2329  S53F PE1NPS JO22 (x2)
135930 -11 1493  S53F DN9AD JO52 (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.