JA9AVA — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Japan Most frequent locator attributed to this token: PM86

Receiver-side FT8 activity involving JA9AVA, decoded by SO8OO in southeastern Poland. 8 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-09-14 and 2026-10-18.

These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.

SO8OO decoded 8 FT8 messages attributed to JA9AVA as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (88%), followed by 80 m (13%). In this small sample, the estimated median decoder S/N was -11 dB; no usual signal pattern is inferred.

Overview

8
Messages attributed
2
UTC dates decoded
2
Active 15-min windows
-11 dB
Estimated median S/N

Bands

80m · 1 40m · 7
First attributed message: 2026-09-14
Last attributed message: 2026-10-18 19:40 UTC

Observed FT8 message patterns

Attributed sample
8 messages
Active dates
2 UTC dates
Estimated median S/N
-11 dB
S/N percentile sample
Too small
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 6, strong (≥ -8 dB) 1.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with JA9AVA in decoded directed-looking exchanges:

Most frequent locator attributed to JA9AVA

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
PM86 · 2 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,497 km (approx.)
Last such locator decoded
2026-10-18 19:40 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.

Time UTCBandJA9AVA S/NCounterpartCounterpart S/NMsgsCapture
10-16 20:16 160m - / -16 4J3DJ -6 / - 2 ✓ Closing fragment
10-12 19:53 160m - / - RA3WY -3 / - 5 Partial capture
09-23 20:03 160m - / -9 GM4YXI -18 / - 4 ✓ Closing fragment
09-21 20:28 80m - / - UA4FKT +12 / - 3 Partial capture
09-21 20:27 80m - / -12 LX1JH +18 / - 2 ✓ Closing fragment
09-21 20:22 80m - / -16 ON8DM +15 / - 5 ✓ Closing fragment
09-14 20:52 40m -13 / -18 IK1MNJ +14 / -4 5 ✓ Full exchange observed
09-14 20:52 40m -10 / - SP5LST - / -4 2 ✓ Closing fragment
09-14 20:48 40m -9 / -11 IW9FRA -19 / -19 2 Partial capture
09-14 20:46 40m -10 / - TN8GD - / -12 3 ✓ Closing fragment
08-31 18:16 40m - / -9 R5FN -3 / - 3 ✓ Closing fragment
08-16 20:10 40m - / -15 UW5KW -7 / - 4 ✓ Closing fragment
08-16 19:59 40m - / -10 EA2AA -10 / - 3 ✓ Closing fragment
08-16 19:55 40m - / -17 UD7G -16 / - 3 ✓ Closing fragment
08-16 19:50 40m - / -15 LZ1GC -7 / - 6 ✓ Closing fragment
08-03 19:57 40m - / -17 9A5E -12 / - 2 ✓ Closing fragment
08-03 19:51 40m - / -13 RA6YDX -16 / - 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

80m 
UTC    dB Audio  Message
202200 +14  342  JA9AVA ON8DM JO10 (x4)
202400 +11  342  JA9AVA UA4FKT LO23
202500 +14 2560  JA9AVA ON8DM 73
202530  +0  343  JA9AVA IK8INR JN70
202730 +15 2154  JA9AVA LX1JH -12 (x2)
202830 +10 2154  JA9AVA UA4FKT LO23 (x3)
194015 -24 2116  TF4M JA9AVA PM86
160m 
UTC    dB Audio  Message
200045  +9 1021  JA9AVA PI4DX -23
200330 -20 1597  JA9AVA GM4YXI -09 (x4)
195345  -4 1402  JA9AVA RA3WY KO81 (x5)
201645  -8  335  JA9AVA 4J3DJ -16 (x2)
40m 
UTC    dB Audio  Message
181630  -2 2319  JA9AVA R5FN R-09 (x2)
204615 -11  394  TN8GD JA9AVA PM86 (x3)
204800  +1 2257  JA9AVA IV3KNT JN66
204815  -9  394  IW9FRA JA9AVA -19
204830 -19 2001  JA9AVA IW9FRA R-11
205215  -7  394  SP5LST JA9AVA -04
205230 +15 2533  JA9AVA IK1MNJ JN35
205245 -13  394  SP5LST JA9AVA RR73
205300  +9 2532  JA9AVA IK1MNJ JN35
205315 -13  394  IK1MNJ JA9AVA -04
205330 +18 2533  JA9AVA IK1MNJ R-18 (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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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