JF8QNF — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

250 messages

Active dates

17 UTC dates

Estimated median S/N

-9.8 dB

Estimated 10th-90th percentile

-21 to +1 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 84, moderate (-15 to -9 dB) 48, strong (≥ -8 dB) 118.

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 JF8QNF 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 JF8QNF

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

QN02 · 91 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

8,163 km (approx.)

Last such locator decoded

2026-09-18 19:28 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
191745  +0  794  JF8QNF IZ7NLJ 73
173630  +0 1735  JF8QNF EU7A -06 (x2)
173800  -8 1982  JF8QNF DK1WB JO50 (x4)
174030  +3 1551  JF8QNF SP6LUV JO90 (x4)
174230 -13 2074  JF8QNF RA7T -16
174300  +9  966  JF8QNF UT7UJ -17
174300 -16 2074  JF8QNF RA7T -16
174330  +5  955  JF8QNF UT7UJ -17

UTC    dB Audio  Message
200400  +2 2509  JF8QNF SQ9DJQ -12
200400  -1  947  JF8QNF S57MPU JN76
200400 -17  253  JF8QNF DO1KF JO60
200430  +5 2509  JF8QNF SQ9DJQ -12
200430 +17  253  JF8QNF SQ8SBP KN19
200430  +3  947  JF8QNF S57MPU JN76
200500 +16  515  JF8QNF UW1HM R+03
200500  +5 2509  JF8QNF SQ9DJQ -12
200500  +0  947  JF8QNF S57MPU JN76
200500  +1  253  JF8QNF DO1KF JO60
200530 +14  515  JF8QNF UW1HM 73
200530  +4 2509  JF8QNF SQ9DJQ -12
200530  -2  947  JF8QNF S57MPU JN76
200600 +10 2509  JF8QNF SQ9DJQ -12 (x2)

UTC    dB Audio  Message
183415  -4 2562  RI1FJZ JF8QNF QN02 (x2)
183500  -4 2560  JF8QNF M1EAG IO92
183515  -7 2562  RI1FJZ JF8QNF QN02
183530 -10 2560  JF8QNF M1EAG IO92
183545  -5 2562  RI1FJZ JF8QNF QN02
183600  -3 2560  JF8QNF M1EAG IO92
183615  -2 2562  RI1FJZ JF8QNF QN02 (x2)
183700  -4 2560  JF8QNF M1EAG IO92
183715  -4 2562  RI1FJZ JF8QNF QN02
183730  -3 2560  JF8QNF M1EAG IO92 (x2)
184145 -15 2562  RI1FJZ JF8QNF QN02 (x2)

UTC    dB Audio  Message
103500 -13 1145  JF8QNF F5LHI JN33
105345 -11 2056  JF8QNF F4FSY -01 (x3)
110500  -2 2492  JF8QNF DN9OPA JN38 (x11)

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.