SP9IMY — reception at SO8OO

Observed FT8 message patterns

Attributed sample

288 messages

Active dates

11 UTC dates

Estimated median S/N

-4 dB

Estimated 10th-90th percentile

-16 to +8 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 29, moderate (-15 to -9 dB) 86, strong (≥ -8 dB) 173.

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 SP9IMY 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 SP9IMY

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

JO90 · 95 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

208 km (approx.)

Last such locator decoded

2026-09-18 17:08 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
101745  +4 1071  SP9IMY EA1Z 73
143030  +5  693  SP9IMY F1PBZ -08 (x2)
092445  -5  943  SP9IMY UN7AM R-08 (x2)
092815 -20 1206  SP9IMY UD8D 73
100330  -3  624  SP9IMY EA5QS R+02
100530  +5  643  SP9IMY EA5RJ R+04 (x2)
100800 -10  552  SP9IMY F5CUN 73
101045 -11 2383  SP9IMY EA7JCR R-08 (x2)
103000 -20 1723  SP9IMY TF5B R-14
111845 -13 1496  SP9IMY ON1JP -09 (x2)

UTC    dB Audio  Message
163315  -3 2389  SP9IMY R2EA -16 (x5)
163915  -8 2145  SP9IMY UX2QX R-11 (x2)
164145  -3 2541  SP9IMY G4DBW R-02
164215  -9 1998  SP9IMY OE9GWV JN47
164215  -3 2541  SP9IMY G4DBW 73
164245 -10 1998  SP9IMY OE9GWV R-05 (x2)
164415  +6 1041  SP9IMY DM1SV R-05 (x2)
174145  -5 2566  SP9IMY EA1ESW R-07

UTC    dB Audio  Message
173800  -4 1548  CQ SP9IMY JO90                      ? a1
173830  -9 1548  <R1943OD> SP9IMY +13 (x2)
173915  +9 2653  SP9IMY R1943OD R-14 (x2)
174100  -2 2654  UN3P SP9IMY -09 (x8)
175200  +9 1647  RA9CUU SP9IMY -09 (x2)

UTC    dB Audio  Message
072015 +12 1401  SP9IMY RX3ASQ 73
072015  -2  918  SP9IMY F1IQH JN27 (x2)
140400  -5 2502  SP9IMY M7PHE IO93 (x3)
141045 -12 2177  SP9IMY DJ7XY JO31
141800  -3 2373  SP9IMY F4HTV JN25
142130 -12 2297  SP9IMY M7PHE R-01 (x2)
142345  -4 1221  SP9IMY 2E0MBH R-09 (x2)
142745  -8 1689  SP9IMY F5OYA/P R-06
143015 -21 2020  SP9IMY UD8S R-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.