JM1XCW — 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: PM95

Receiver-side FT8 activity involving JM1XCW, decoded by SO8OO in southeastern Poland. 152 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 13 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-10-23.

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 152 FT8 messages attributed to JM1XCW as the transmitting token by decoded message structure across 13 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (88%), followed by 40 m (12%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (82%); the estimated median was -4 dB.

Overview

152
Messages attributed
13
UTC dates decoded
24
Active 15-min windows
-4 dB
Estimated median S/N

Bands

40m · 18 20m · 134
First attributed message: 2026-06-10
Last attributed message: 2026-10-23 20:49 UTC

Observed FT8 message patterns

Attributed sample
152 messages
Active dates
13 UTC dates
Estimated median S/N
-4 dB
Estimated 10th-90th percentile
-10 to -1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 11, moderate (-15 to -9 dB) 17, strong (≥ -8 dB) 124.

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 JM1XCW in decoded directed-looking exchanges:

Most frequent locator attributed to JM1XCW

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
PM95 · 45 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,693 km (approx.)
Last such locator decoded
2026-10-23 20:49 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 UTCBandJM1XCW S/NCounterpartCounterpart S/NMsgsCapture
10-14 20:41 40m - / -17 R7CD +8 / - 2 ✓ Closing fragment
10-11 20:36 40m - / -7 HB9ELE +4 / - 4 ✓ Closing fragment
10-11 20:35 40m - / -11 ON1AEY -10 / - 4 ✓ Closing fragment
10-09 20:42 40m -10 / - R7ZY 0 / - 2 ✓ Closing observed
10-09 20:42 40m - / - OM5ALL -12 / - 2 Partial capture
10-09 20:40 40m -10 / -13 IW0EYT -15 / - 3 ✓ Closing observed
10-09 20:35 40m - / - F1HSY -6 / - 2 Partial capture
10-09 20:33 40m -9 / - IQ8DO - / -12 3 ✓ Closing fragment
10-07 20:41 40m - / -18 M7SZB -8 / - 3 Partial capture
10-03 20:30 40m - / -14 IQ4JO +8 / - 2 ✓ Closing fragment
10-02 20:47 40m - / - G0TKJ -6 / - 3 Partial capture
10-02 20:46 40m - / - F1IQH -6 / - 2 Partial capture
10-02 20:44 40m - / - DL2EMU +6 / - 3 ✓ Closing fragment
10-02 20:42 40m - / -17 HB9HFJ +5 / - 4 Partial capture
10-02 20:41 40m - / - M7NTL -11 / - 3 Partial capture
10-02 20:37 40m - / -8 OT7K +6 / - 2 ✓ Closing fragment
10-01 20:42 40m - / -14 EA2EYJ -6 / - 3 Partial capture
10-01 20:41 40m - / -12 RD3FY -7 / - 3 ✓ Closing fragment
10-01 20:38 40m - / -8 HB9ELE +14 / - 2 ✓ Closing fragment
08-22 20:48 20m - / -15 M8HAG +8 / - 2 ✓ Closing fragment
08-09 20:38 20m - / - DF3VG -5 / - 3 Partial capture
08-09 20:37 20m - / -11 EA8AT -16 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
203600  -9  975  JM1XCW ON1AEY -10
203600  +0  796  JM1XCW HB9ELE JN47
203630  -7  975  JM1XCW ON1AEY RR73
203700  +4  796  JM1XCW HB9ELE JN47 (x3)
204145 +11  921  JM1XCW R7CD -17 (x2)
203915  -4 2986  R2EA/P JM1XCW PM95
204045  -3 2986  RA3BQ JM1XCW -17
204145  -6 2987  SM0MXO JM1XCW -11
204415  -6 2985  G4CFS JM1XCW RR73
204545  -4 2986  LY2BSW JM1XCW RR73
204645  -5 2987  IS0LJG JM1XCW RR73
204900  -5 2971  EA4GA JM1XCW PM95
80m 
UTC    dB Audio  Message
204830  +3 1344  JM1XCW SP9TBT JO90
20m 
UTC    dB Audio  Message
203715 -14 1772  JM1XCW EA8AT -11 (x2)
203815  -4 2005  JM1XCW DF3VG JN48 (x3)
204815  +8 2916  JM1XCW M8HAG -15 (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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