JR3NZC — 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: PM74

Receiver-side FT8 activity involving JR3NZC, decoded by SO8OO in southeastern Poland. 262 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 24 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-04.

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 262 FT8 messages attributed to JR3NZC as the transmitting token by decoded message structure across 24 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (69%), followed by 40 m (31%). Several six-hour UTC windows tied for the largest share (97%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

262
Messages attributed
24
UTC dates decoded
55
Active 15-min windows
-11 dB
Estimated median S/N

Bands

40m · 80 20m · 182
First attributed message: 2026-06-07
Last attributed message: 2026-10-04 21:04 UTC

Observed FT8 message patterns

Attributed sample
262 messages
Active dates
24 UTC dates
Estimated median S/N
-11 dB
Estimated 10th-90th percentile
-18 to -4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 56, moderate (-15 to -9 dB) 114, strong (≥ -8 dB) 92.

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 JR3NZC 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 JR3NZC

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
PM74 · 143 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,565 km (approx.)
Last such locator decoded
2026-10-04 21:04 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 UTCBandJR3NZC S/NCounterpartCounterpart S/NMsgsCapture
10-21 20:15 40m - / - IT9ZGW -16 / - 2 Partial capture
10-19 20:25 40m - / - PA3AGN -12 / - 7 Partial capture
10-19 20:25 40m - / - EA3ENB -5 / - 3 Partial capture
10-19 20:21 40m - / -12 LX1JH +18 / - 2 ✓ Closing fragment
10-13 20:23 40m - / - PD1EN -7 / - 7 Partial capture
10-13 20:22 40m - / -11 DF1SD +13 / - 2 ✓ Closing fragment
10-13 19:55 40m - / -11 R3LDK -14 / - 2 ✓ Closing fragment
10-13 19:41 40m - / -6 F8MRQ +1 / - 6 Partial capture
10-13 19:41 40m - / -13 IV3BHD -1 / - 10 Partial capture
10-13 19:40 40m - / -17 ON7NQ +14 / - 3 ✓ Closing fragment
10-06 20:39 40m - / -16 LZ2CC -5 / - 4 Partial capture
10-04 21:04 40m -12 / -24 9A3QO -16 / - 2 Partial capture
10-04 20:55 40m -11 / - F1GUQ -9 / -20 4 ✓ Closing observed
10-04 20:51 40m -10 / - OK1ALF - / -17 2 ✓ Closing fragment
10-04 20:48 40m -9 / - YO6BGT - / -9 2 Partial capture
10-04 20:47 40m - / - HB9DAU -13 / - 2 Partial capture
10-04 20:47 40m - / - RD3FY -11 / - 4 Partial capture
10-04 20:46 40m -8 / -18 EG1FAP -6 / - 4 ✓ Closing observed
10-04 20:23 40m - / -14 UR4LJ 0 / - 2 ✓ Closing fragment
10-04 20:21 40m - / -14 4Z5OZ -7 / - 3 ✓ Closing fragment
10-04 20:20 40m - / - IK0XBX -12 / - 2 Partial capture
10-03 20:51 40m - / -3 ES4TRI -8 / - 4 ✓ Closing fragment
10-03 20:45 40m - / -4 UA3PTK -14 / - 2 ✓ Closing fragment
10-03 20:43 40m - / -24 UA3PTY -6 / - 2 Partial capture
10-03 20:38 40m - / -25 IU3WOH -8 / - 2 ✓ Closing fragment
10-03 20:32 40m - / -1 DJ6VX +17 / - 5 ✓ Closing fragment
10-02 20:31 40m - / -16 R2GDV -18 / - 3 Partial capture
09-29 20:29 40m - / -15 ON7DE -8 / - 9 Partial capture
09-29 20:22 40m - / -16 DL1YM +11 / - 3 ✓ Closing fragment
09-25 20:49 40m - / - RT6Z +1 / - 2 Partial capture
09-25 20:43 40m - / - RT6Z +1 / - 2 Partial capture
09-25 20:40 40m - / -10 DL9AJ -2 / - 3 Partial capture
09-25 20:32 40m - / -10 IN3KXV +8 / - 4 ✓ Closing fragment
09-21 21:04 40m - / -18 DL6RU +14 / - 2 ✓ Closing fragment
09-21 21:01 40m - / -11 HB9ELE +10 / - 3 ✓ Closing fragment
09-19 20:39 40m -19 / -14 SM0IJS -13 / - 3 Partial capture
09-19 20:36 40m - / - PD1EN -4 / - 2 Partial capture
09-19 20:16 40m - / -16 EA9AR -2 / - 2 Partial capture
09-18 20:13 80m - / - TA6B -3 / - 15 Partial capture
09-17 20:56 40m - / -19 Z31B -14 / - 2 Partial capture
09-17 20:47 40m - / -9 RK3DJW -2 / - 2 ✓ Closing fragment
09-17 20:46 40m - / -12 F8FKI +20 / - 2 ✓ Closing fragment
09-13 20:20 40m - / -16 OT7K +14 / - 2 ✓ Closing fragment
09-13 20:11 40m -15 / -12 DJ9KG +2 / - 3 ✓ Closing observed
09-13 20:08 40m -12 / - IZ8GUU -18 / -22 4 ✓ Closing observed
09-10 21:13 40m -8 / -8 IK5ZPV +2 / -15 7 ✓ Full exchange observed
09-10 21:11 40m -7 / - SM1HEV +4 / -24 4 ✓ Closing observed
09-10 21:05 40m - / -16 IK5ZPV +2 / - 6 Partial capture
09-10 21:02 40m -8 / -14 EA5OM -6 / - 4 ✓ Closing observed
09-10 20:59 40m - / -12 R3ST +6 / - 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
202100 +17  523  JR3NZC LX1JH -12 (x2)
202500  -3  574  JR3NZC EA3ENB JN11
202530  -8 1142  JR3NZC PA3AGN JO22
202530  -3  574  JR3NZC EA3ENB JN11
202600 -12 1142  JR3NZC PA3AGN JO22
202600  -9  574  JR3NZC EA3ENB JN11
202630 -10 1142  JR3NZC PA3AGN JO22 (x5)
201500 -16 1754  JR3NZC IT9ZGW JM76 (x2)
202430 -13 2151  JR3NZC IZ2QPP -05
80m 
UTC    dB Audio  Message
201345  -5 1442  JR3NZC TA6B KN81 (x15)
20m 
UTC    dB Audio  Message
205100  +7 1864  JR3NZC F5CCX JN18 (x2)
194430  -7 2275  JR3NZC <...> -20
195645 -10 2577  JR3NZC 4Z5AY RR73
210000 +11  967  JR3NZC EA2K -07 (x2)
210245 -23 2214  <...> JR3NZC PM74
083400  +6 2142  JR3NZC RM6OS -04 (x2)
205745  +0 1606  JR3NZC I5HLK -12 (x3)
210415  -5 1332  JR3NZC IZ0EAC -17 (x3)

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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