SP5JMA — reception at SO8OO

Observed FT8 message patterns

Attributed sample

4,455 messages

Active dates

66 UTC dates

Estimated median S/N

+3 dB

Estimated 10th-90th percentile

-6.9 to +11 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 50, moderate (-15 to -9 dB) 252, strong (≥ -8 dB) 4,153.

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 SP5JMA 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 SP5JMA

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

KO02 · 2,577 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

290 km (approx.)

Last such locator decoded

2026-11-06 05:15 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
051045  +9  358  RA2FGK SP5JMA KO02
051100 +14 1158  SP5JMA RA2FGK -07
051115 +10  357  RA2FGK SP5JMA R-01
051130  +3 1158  SP5JMA RA2FGK RR73
051145 +10  357  RA2FGK SP5JMA 73
051215 +15  357  HB3YBK SP5JMA KO02 (x4)
051400  -1 1606  SP5JMA HB3YBK -01
051415 +18  357  HB3YBK SP5JMA R-07
051430  -3 1606  SP5JMA HB3YBK RR73
051445  +7  357  HB3YBK SP5JMA 73
051515  +3  357  OR7K SP5JMA KO02 (x2)

UTC    dB Audio  Message
023030  -6 1756  SP5JMA P4/WE9V -12
023800  -1 1756  SP5JMA RR73; RX9ABI <...> -10 (x2)
051500 -13 2139  SP5JMA SV1DKR -19 (x2)
052015 +15 2644  SP5JMA OH5KNL -12 (x2)
044600  -4 1445  SP5JMA YO4GIY -12
234615 -13 2030  SP5JMA EA5JKT -17 (x2)
122200 -12  723  JA2IVK SP5JMA KO02 (x2)
213145 -15 1688  SP5JMA EA6TU -06
015830 -14 1312  SP5JMA IU8RFW R-02 (x2)

UTC    dB Audio  Message
024230 -20 1377  SP5JMA KK4CDK RR73
222930  -2  613  SP5JMA ON4BJP -08 (x2)
223445  +5  383  SP5JMA IK2EST -15 (x3)
223730 -12  382  F1MGE SP5JMA R-05
223745 -13 1603  SP5JMA F1MGE RR73
224145  +0 1467  SP5JMA DK2DB JN48 (x3)
224445 +12  330  SP5JMA DF2NV +12 (x2)
224615  -2 2112  SP5JMA HB9EUP +09 (x2)

UTC    dB Audio  Message
120045  -9  983  SP5JMA SV1CQN +21 (x2)
121945 -19 1383  SP5JMA LZ2IP +01
085915  +5 2146  SP5JMA CN8WK -12 (x2)
090745 -18 1144  SP5JMA UN7AM -08 (x2)
111130 -18 1674  SP5JMA RR73; PD3CFG <...> -10

UTC    dB Audio  Message
212715 -12  425  IK6BSN SP5JMA KO02
212815 -17  425  RI1FJZ SP5JMA KO02

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.