F4NPC — reception at SO8OO

Observed FT8 message patterns

Attributed sample

423 messages

Active dates

9 UTC dates

Estimated median S/N

-9.9 dB

Estimated 10th-90th percentile

-16 to -2 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 45, moderate (-15 to -9 dB) 202, strong (≥ -8 dB) 176.

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 F4NPC 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 F4NPC

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

JN23 · 282 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,462 km (approx.)

Last such locator decoded

2026-09-26 21:31 UTC

Other locator fields attributed to this token: JM23 (21).

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
141400 -18 2293  F4NPC D2ACE -12 (x2)
122830 -20 1519  F4NPC CT2HEX R-12

UTC    dB Audio  Message
193945 -23 1287  F4NPC HB0PA -15

UTC    dB Audio  Message
212445  -7  882  CQ F4NPC JN23 (x2)
212545  -8 1058  UX5UW F4NPC -06 (x2)
212745  -9 1059  MW7AHM F4NPC RR73
212815  -5 1059  CQ F4NPC JN23 (x3)
212945  -5 1060  EX7DY F4NPC JN23 (x2)
200715  -9 1614  F4NPC GJ0KYZ -07 (x2)
201145  -9  681  F4NPC OS4K -13 (x3)

UTC    dB Audio  Message
135845 +13  624  F4NPC F4HTA +05 (x2)
151715  -8 1669  RI1FJL F4NPC JM23 (x6)
152445  -8 1754  UR5WT F4NPC JM23
152515  -7 1752  RI1FJL F4NPC JM23 (x4)
153030  -9  420  F4NPC RI1FJL -19 (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.