JO4IPQ — 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: PM64

Receiver-side FT8 activity involving JO4IPQ, decoded by SO8OO in southeastern Poland. 61 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-07-17 and 2026-09-22.

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 61 FT8 messages attributed to JO4IPQ as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (82%), followed by 40 m (18%). 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 weak S/N range (84%); the estimated median was -18 dB.

Overview

61
Messages attributed
6
UTC dates decoded
21
Active 15-min windows
-18 dB
Estimated median S/N

Bands

First attributed message: 2026-07-17
Last attributed message: 2026-09-22 21:06 UTC

Observed FT8 message patterns

Attributed sample
61 messages
Active dates
6 UTC dates
Estimated median S/N
-18 dB
Estimated 10th-90th percentile
-22 to -15 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 51, moderate (-15 to -9 dB) 10, strong (≥ -8 dB) 0.

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.

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 JO4IPQ

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
PM64 · 27 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,453 km (approx.)
Last such locator decoded
2026-09-22 21:06 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 UTCBandJO4IPQ S/NCounterpartCounterpart S/NMsgsCapture
10-22 16:53 40m - / - DL5XJ -1 / - 3 Partial capture
10-22 16:52 40m - / -17 RK6OZ -10 / - 4 Partial capture
10-22 16:50 40m - / -11 I6WJB +4 / - 2 ✓ Closing fragment
10-22 16:43 40m - / - IU1DOF -1 / - 3 Partial capture
10-21 20:32 40m - / -14 IW4DNI -20 / - 4 Partial capture
10-21 17:37 40m - / - RC6OX 0 / - 3 Partial capture
10-21 17:31 40m - / - RC6OX +1 / - 4 Partial capture
10-21 17:23 40m - / - UR9QQ -6 / - 3 Partial capture
10-21 17:07 40m - / -25 IZ0RPS -2 / - 3 ✓ Closing fragment
10-20 21:28 40m - / -14 I1WUA -20 / - 3 ✓ Closing fragment
10-20 21:10 40m - / -15 I1WUA -3 / - 4 Partial capture
10-20 19:43 40m - / -23 IU3VXN -4 / - 3 Partial capture
10-20 16:10 40m - / -18 OK2IT +13 / - 3 Partial capture
10-20 16:04 40m - / -25 OE3RWR +1 / - 7 Partial capture
10-20 15:38 40m - / -15 EV1R +8 / - 2 ✓ Closing fragment
10-13 21:23 40m - / - F4MWH 0 / - 2 Partial capture
10-13 21:12 40m - / -9 UR6II -2 / - 2 ✓ Closing fragment
10-13 21:03 40m - / - RD3FY -10 / - 4 Partial capture
10-13 20:53 40m - / -9 SN4K -12 / - 3 ✓ Closing fragment
10-13 20:49 40m - / -18 EW8AAC -18 / - 3 Partial capture
10-13 20:35 40m - / - RZ4FWA -16 / - 4 Partial capture
10-13 20:34 40m - / -16 IU0TYC -2 / - 2 ✓ Closing fragment
10-13 20:17 40m - / -19 IQ3TR -7 / - 5 Partial capture
10-13 19:44 40m - / -18 9A7BB +2 / - 2 Partial capture
10-13 18:51 40m - / - EA7ALL -5 / - 4 Partial capture
10-13 18:49 40m - / -12 4L6EZ -12 / - 2 ✓ Closing fragment
10-13 18:31 40m - / 0 UN0GY -10 / - 2 ✓ Closing fragment
10-13 17:20 40m - / - RT6DU -7 / - 10 Partial capture
10-13 16:48 40m - / - RD7O -10 / - 3 Partial capture
10-13 16:21 40m - / -10 OE3KLU +14 / - 5 Partial capture
10-13 16:20 40m - / -15 DF0KK 0 / - 3 ✓ Closing fragment
10-13 16:13 40m - / -10 OZ1ADL -3 / - 2 ✓ Closing fragment
10-13 14:59 40m - / - OM7TJ -2 / - 12 Partial capture
10-08 19:17 40m - / -19 YL2KF +3 / - 2 ✓ Closing fragment
10-08 19:13 40m - / - S51CK +13 / - 12 Partial capture
10-08 19:11 40m - / -12 LZ2XA +11 / - 8 ✓ Closing fragment
10-08 18:15 40m - / - LX1JH +1 / - 2 Partial capture
10-08 18:03 40m - / -18 EU2NS -2 / - 2 ✓ Closing fragment
10-08 17:42 40m - / -15 UT5ZC -4 / - 6 Partial capture
10-08 16:54 40m - / - UA9SAV -5 / - 2 Partial capture
10-08 16:37 40m - / - UA3FO +2 / - 2 Partial capture
10-08 16:30 40m - / -15 OZ/PA2RO +3 / - 3 Partial capture
10-08 16:29 40m - / -19 YO3KWJ 0 / - 2 ✓ Closing fragment
10-08 16:27 40m - / -15 DL/OE6BVG +6 / - 2 Partial capture
10-08 16:17 40m - / -13 DL8OH +15 / - 3 Partial capture
10-08 16:06 40m - / - YO8RQP -2 / - 3 Partial capture
10-08 16:02 40m - / -16 UT5ZC +2 / - 2 Partial capture
10-08 14:44 40m - / - UA4FKT -9 / - 3 Partial capture
10-08 14:37 40m - / -13 EW4DX +11 / - 2 ✓ Closing fragment
10-08 14:37 40m - / - LB7ZG -6 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m
UTC    dB Audio  Message
203345 -23 2035  JO4IPQ IW4DNI -14 (x2)
164330  -1 1131  JO4IPQ IU1DOF JN34 (x3)
165000  +4  520  JO4IPQ I6WJB -11 (x2)
165100 -16 2266  JO4IPQ R2EN -16
165245  -8 2413  JO4IPQ RK6OZ -17
165300  -1 2548  JO4IPQ DL5XJ JO54
165315 -16 2413  JO4IPQ RK6OZ -17
165330  -2 2548  JO4IPQ DL5XJ JO54
165345  -9 2413  JO4IPQ RK6OZ -17
165400  +0 2548  JO4IPQ DL5XJ JO54
165445  -5 2413  JO4IPQ RK6OZ -17
80m
UTC    dB Audio  Message
190845 +11 2149  JO4IPQ DL3JJ JO60
20m
UTC    dB Audio  Message
150245 -11 2578  JO4IPQ ON6AA JO11 (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

CW history is temporarily unavailable.

Explore CW reception at SO8OO

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