JR1IZM — 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: QM06

Receiver-side FT8 activity involving JR1IZM, decoded by SO8OO in southeastern Poland. 42 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-02.

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 42 FT8 messages attributed to JR1IZM as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (62%), followed by 20 m (21%) and 80 m (17%). Several six-hour UTC windows tied for the largest share (100%), 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

42
Messages attributed
7
UTC dates decoded
11
Active 15-min windows
-11 dB
Estimated median S/N

Bands

80m · 7 40m · 26 20m · 9
First attributed message: 2026-06-07
Last attributed message: 2026-10-02 19:40 UTC

Observed FT8 message patterns

Attributed sample
42 messages
Active dates
7 UTC dates
Estimated median S/N
-11 dB
Estimated 10th-90th percentile
-24 to -3 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 8, moderate (-15 to -9 dB) 21, strong (≥ -8 dB) 13.

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 JR1IZM 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 JR1IZM

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
QM06 · 27 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,707 km (approx.)
Last such locator decoded
2026-10-02 19:30 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 UTCBandJR1IZM S/NCounterpartCounterpart S/NMsgsCapture
10-15 20:16 160m - / -13 SP3BPU +17 / - 7 ✓ Closing fragment
10-14 20:33 160m - / -18 IZ8FWN -1 / - 2 ✓ Closing fragment
10-12 20:58 80m - / -17 OT7K +24 / - 2 ✓ Closing fragment
10-12 20:42 160m - / -11 UN0GY -12 / - 2 Partial capture
10-12 20:25 160m - / -17 R1IO -8 / - 2 ✓ Closing fragment
10-11 18:18 160m - / -19 R2HM -7 / - 2 ✓ Closing fragment
10-09 20:24 160m - / -13 R3ZMM -6 / - 3 ✓ Closing fragment
10-09 20:19 160m - / - R3ZMM -6 / - 4 Partial capture
10-08 19:22 160m - / -17 R3GO -2 / - 3 ✓ Closing fragment
10-08 19:22 160m - / - UB3IBG -17 / - 2 Partial capture
10-02 19:40 80m -16 / -19 YO2MAX +12 / - 4 ✓ Closing observed
10-02 19:30 80m -13 / -9 F5OHS +11 / - 6 ✓ Full exchange observed
10-02 19:16 80m - / -16 HB9ECS +3 / - 3 Partial capture
10-02 19:16 80m - / - EA3EDU -9 / - 9 Partial capture
10-02 19:16 80m - / - RK6OQ -11 / - 2 Partial capture
10-01 19:05 160m - / -21 HA5AO -14 / - 3 Partial capture
10-01 18:44 160m - / -22 ES2AJ -8 / - 3 Partial capture
10-01 18:37 160m - / - DK3UA -6 / - 5 Partial capture
10-01 18:31 160m - / - DF2GH -13 / - 3 Partial capture
10-01 18:30 160m - / - DK3UA -6 / - 4 Partial capture
10-01 18:27 160m - / -25 OK1XV -9 / - 5 ✓ Closing fragment
10-01 18:24 160m - / -22 DL3IAE -5 / - 6 ✓ Closing fragment
09-30 20:11 160m - / -23 EW6CB -2 / - 2 Partial capture
09-30 20:09 160m - / -17 OH0Z -1 / - 4 ✓ Closing fragment
09-30 19:52 160m - / -23 RU3FM -1 / - 5 ✓ Closing fragment
09-30 19:49 160m - / -18 OK2DA +13 / - 3 ✓ Closing fragment
09-30 19:48 160m - / - IW4EGP +11 / - 2 Partial capture
09-30 19:40 160m - / -25 SM0CXS -4 / - 2 ✓ Closing fragment
09-27 19:07 160m - / -21 RO7A -20 / - 3 Partial capture
09-23 20:43 80m - / -15 LZ1KU +6 / - 2 ✓ Closing fragment
09-23 20:00 160m - / -16 OH3SR -4 / - 3 ✓ Closing fragment
09-23 19:41 160m - / -20 DL1RWN -2 / - 2 ✓ Closing fragment
09-23 19:36 160m - / -19 SP2HNF +5 / - 4 Partial capture
09-22 20:18 160m - / -22 F5BZB 0 / - 6 ✓ Closing fragment
09-22 20:16 160m - / -18 DL1RWN +10 / - 2 ✓ Closing fragment
09-17 20:47 40m - / - UA4FKT +4 / - 4 Partial capture
09-17 20:21 40m - / - DL1SRS +5 / - 4 Partial capture
09-17 20:19 40m - / -18 Z31B -13 / - 3 ✓ Closing fragment
09-14 17:44 40m - / - R3RB -10 / - 3 Partial capture
09-11 20:43 40m - / - R3LCG -4 / - 2 Partial capture
09-11 20:32 40m -13 / -15 DJ0MAB +11 / -21 6 ✓ Full exchange observed
09-11 20:29 40m -15 / -13 OE7FWJ -2 / - 3 ✓ Closing observed
09-10 17:18 40m - / -13 IZ7DOK -12 / - 4 ✓ Closing fragment
09-09 18:37 80m - / -17 ON4IQ +1 / - 2 ✓ Closing fragment
09-08 20:48 80m - / -24 RT6Z 0 / - 3 ✓ Closing fragment
09-08 20:30 80m - / - EW8CW +4 / - 4 Partial capture
09-08 20:20 80m - / -14 UA3QQG -5 / - 2 Partial capture
09-08 20:05 80m - / -20 HA7XL +14 / - 5 ✓ Closing fragment
09-08 19:56 80m - / -17 R2AB +2 / - 3 ✓ Closing fragment
09-07 20:38 80m - / -19 UT7UA +11 / - 8 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

160m 
UTC    dB Audio  Message
181915  -4 1051  JR1IZM R2HM RR73
202545  -6 2402  JR1IZM R1IO -17 (x2)
204215 -13 2412  JR1IZM UN0GY -11 (x2)
203330  +4 2106  JR1IZM IZ8FWN -18 (x2)
201600 +16 2599  JR1IZM SP3BPU -13 (x7)
202345 +15 2597  JR1IZM S56P RR73
80m 
UTC    dB Audio  Message
192145 -10  612  JR1IZM EA3EDU JN01
192615  -2  780  JR1IZM YL3KZ KO16
193000 -13  780  F5OHS JR1IZM QM06
193115 +10 1134  JR1IZM F5OHS -09 (x5)
194000 +14 2457  JR1IZM YO2MAX KN15 (x2)
194045 -16 2457  YO2MAX JR1IZM RR73
194100 +12 2457  JR1IZM YO2MAX 73
194700  -9 1824  JR1IZM SX2LGT -20
205800 +24  549  JR1IZM OT7K -17 (x2)
40m 
UTC    dB Audio  Message
174430 -11 1596  JR1IZM R3RB LO03 (x3)
201945 -16 2077  JR1IZM Z31B -18 (x3)
202145  +2  542  JR1IZM DL1SRS JN49 (x4)
204715  +9  843  JR1IZM UA4FKT LO23 (x2)
204745  +7 2815  JR1IZM DL7ARV JO62
204815  +1  843  JR1IZM UA4FKT LO23 (x2)
20m 
UTC    dB Audio  Message
200415 -22 1856  JR1IZM RC1C KP50
200415 -11 1235  JR1IZM IZ4EKI -14
200445 -23 1856  JR1IZM RC1C KP50 (x2)
200545 -18 1428  JR1IZM EA3BIC JN11 (x2)
200615 -13 1707  JR1IZM EA1B IN83
200615  -8 2601  JR1IZM 4L7T LN21
200645  -6 1707  JR1IZM EA1B R-16
200645 -10 2601  JR1IZM 4L7T LN21
200715  -8 1707  JR1IZM EA1B 73
200715  -8 2601  JR1IZM 4L7T LN21 (x3)
202630  -6  570  JR1IZM 7X5CY -10

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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