JA9CZE — 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 JA9CZE, decoded by SO8OO in southeastern Poland. 126 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 13 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-16.

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 126 FT8 messages attributed to JA9CZE as the transmitting token by decoded message structure across 13 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (88%), followed by 20 m (12%). Most decodes (100%) fell within the six-hour window 19:00-01:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

126
Messages attributed
13
UTC dates decoded
25
Active 15-min windows
-9 dB
Estimated median S/N

Bands

40m · 111 20m · 15
First attributed message: 2026-06-06
Last attributed message: 2026-10-16 20:51 UTC

Observed FT8 message patterns

Attributed sample
126 messages
Active dates
13 UTC dates
Estimated median S/N
-9 dB
Estimated 10th-90th percentile
-16 to -4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 15, moderate (-15 to -9 dB) 50, strong (≥ -8 dB) 61.

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 JA9CZE 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 JA9CZE

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 · 56 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,497 km (approx.)
Last such locator decoded
2026-10-14 21:17 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 UTCBandJA9CZE S/NCounterpartCounterpart S/NMsgsCapture
10-16 20:50 40m -15 / - LU8AHF - / -17 3 Partial capture
10-16 20:47 40m -11 / -14 IZ1EPM +8 / -7 4 ✓ Full exchange observed
10-16 20:45 40m -16 / -12 YO4ASD -14 / -9 3 Partial capture
10-16 20:41 40m -16 / - R6SS - / -5 2 ✓ Closing fragment
10-14 21:19 40m - / - SV1DZB -9 / - 3 Partial capture
10-14 21:02 40m -8 / - EP2AES - / -9 24 Partial capture
09-22 21:16 40m - / -13 9A5CW +10 / - 4 ✓ Closing fragment
09-22 21:14 40m -9 / -10 MI7XHT -13 / -16 5 ✓ Full exchange observed
09-22 21:02 40m -10 / - SP5MXZ - / -7 2 ✓ Closing fragment
09-22 21:00 40m -10 / -2 UA9CR -5 / -9 3 ✓ Full exchange observed
09-22 20:59 40m - / - 9A5CW +13 / - 6 Partial capture
09-22 20:59 40m - / -16 DK7QJ +8 / - 6 ✓ Closing fragment
09-22 20:57 40m - / -14 EA7BD -14 / - 6 ✓ Closing fragment
09-22 20:57 40m -11 / -6 EA2EWL -10 / -20 5 Partial capture
09-22 20:56 40m - / -14 Z31B -14 / - 3 ✓ Closing fragment
09-22 20:55 40m -8 / -7 GW0ARK +1 / -19 7 ✓ Full exchange observed
09-21 21:00 40m -10 / - TF8SM - / -20 3 Partial capture
09-21 21:00 40m - / -6 IT9PHU -6 / - 2 Partial capture
09-21 20:46 40m - / - M9LDX -9 / - 2 Partial capture
09-21 20:45 40m -10 / -5 IU8RFW -1 / - 4 ✓ Closing observed
09-21 20:45 40m - / -11 F5MYK -10 / - 2 ✓ Closing fragment
09-21 20:40 40m - / -9 IT9PHU -9 / - 5 ✓ Closing fragment
09-21 20:38 40m -6 / - OE3UKW - / -12 2 ✓ Closing fragment
09-21 20:34 40m -5 / - TF8SM - / - 6 Partial capture
09-21 20:21 40m - / -8 DL7ACA +4 / - 3 ✓ Closing fragment
09-21 20:18 40m - / -8 HB9ELE +9 / - 5 ✓ Closing fragment
09-21 20:17 40m - / -12 TF8KW -22 / - 2 ✓ Closing fragment
09-19 21:27 40m - / - F5PBG +1 / - 2 Partial capture
09-19 21:23 40m - / - IU4PPL -5 / - 2 Partial capture
09-16 21:25 40m - / -8 F1BBI -14 / - 3 Partial capture
09-16 21:22 40m - / - F4HJG -7 / - 2 Partial capture
09-16 21:22 40m - / - R6DUW -11 / - 5 Partial capture
09-16 21:21 40m - / -11 PC2J +7 / - 2 Partial capture
09-16 21:19 40m - / -5 IK1LZF -1 / - 3 ✓ Closing fragment
09-16 21:18 40m - / -21 CT3HU -18 / - 4 ✓ Closing fragment
09-16 21:16 40m - / - PC2J +14 / - 2 Partial capture
09-16 21:14 40m - / - IK1LZF -3 / - 2 Partial capture
09-16 21:09 40m - / -15 HB9HOG +7 / - 3 ✓ Closing fragment
09-16 21:09 40m - / - PD2PE -10 / - 2 Partial capture
09-16 21:05 40m - / -14 G0GFC -19 / - 2 Partial capture
09-16 21:05 40m - / -17 DL2YCD -10 / - 8 Partial capture
09-16 21:00 40m -19 / - CT3HU - / - 6 Partial capture
09-15 20:24 40m -12 / - CERT/KP4QVQ - / -20 5 Partial capture
09-15 20:22 40m -8 / - G4BWQ/P - / - 2 Partial capture
09-15 19:23 40m - / - SQ8EFK -14 / - 2 Partial capture
09-13 20:52 40m -12 / - DL5BWG - / -17 2 ✓ Closing fragment
09-13 20:51 40m -15 / - SP2Y - / -8 2 ✓ Closing fragment
09-13 20:49 40m -14 / -14 I0KMJ -9 / -4 5 ✓ Full exchange observed
09-13 20:49 40m - / -18 ON1JP -22 / - 3 Partial capture
09-13 20:48 40m -12 / - HB9TIH - / -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
204130 -16 2272  R6SS JA9CZE R-05 (x2)
204445 -14 1979  JA9CZE UF5F R-03
204545 -11  979  JA9CZE YO4ASD -12
204600 -15 2272  SP9D JA9CZE RR73
204615 -17  979  JA9CZE YO4ASD -12
204630 -16 2272  YO4ASD JA9CZE R-09
204745  +8  545  JA9CZE IZ1EPM -14
204800 -14 2272  DS2MGT JA9CZE R-05
204815  +8  545  JA9CZE IZ1EPM -14
204900 -11 2272  IZ1EPM JA9CZE R-07
204945  +8  545  JA9CZE IZ1EPM RR73
205030 -17 2272  LU8AHF JA9CZE R-17 (x3)
20m 
UTC    dB Audio  Message
202930  -1 3022  JA9CZE ON7NQ JO21 (x7)

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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