JH3IEG — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Japan Most frequent locator attributed to this token: PM74

Receiver-side FT8 activity involving JH3IEG, decoded by SO8OO in southeastern Poland. 61 FT8 messages attributed to this token as transmitter, on 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-07-10 and 2026-08-02.

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 61 FT8 messages attributed to JH3IEG as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). 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 (72%); the estimated median was -6 dB.

Overview

61
Messages attributed
5
UTC dates decoded
11
Active 15-min windows
-6 dB
Estimated median S/N

Bands

20m · 61
First attributed message: 2026-07-10
Last attributed message: 2026-08-02 15:44 UTC

Observed FT8 message patterns

Attributed sample
61 messages
Active dates
5 UTC dates
Estimated median S/N
-6 dB
Estimated 10th-90th percentile
-11 to +1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 17, strong (≥ -8 dB) 44.

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 JH3IEG 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 JH3IEG

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 · 16 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,565 km (approx.)
Last such locator decoded
2026-08-02 15:44 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 UTCBandJH3IEG S/NCounterpartCounterpart S/NMsgsCapture
08-17 20:58 40m - / -12 SQ9BC -2 / - 4 Partial capture
08-17 20:55 40m - / -7 R3ZBR -9 / - 4 ✓ Closing fragment
08-17 20:51 40m - / - SP4TKA -6 / - 4 Partial capture
08-02 15:46 20m - / - F1JPG -11 / - 3 Partial capture
08-02 15:21 20m -4 / - BA6CC - / -11 2 ✓ Closing fragment
08-02 15:21 20m - / - G6OTZ -18 / - 4 Partial capture
07-27 15:33 20m - / -10 IU2OQT -7 / - 2 ✓ Closing fragment
07-16 16:12 20m -10 / - PD1ADA - / - 2 ✓ Closing fragment
07-16 16:09 20m -12 / - PD0LH - / -11 2 ✓ Closing fragment
07-16 16:06 20m -10 / - RW3DDZ - / -8 2 ✓ Closing fragment
07-16 15:52 20m -9 / - BG4OOO - / -7 2 ✓ Closing fragment
07-16 15:48 20m -4 / - SM6UQL - / -3 2 ✓ Closing fragment
07-16 15:38 20m -2 / - ED7SUN - / -15 2 ✓ Closing fragment
07-14 13:13 20m - / - DK7UY -4 / - 2 Partial capture
07-12 15:51 20m +4 / - BG2RVL - / -14 2 ✓ Closing fragment
07-12 15:48 20m +3 / - IW2CAM -15 / - 3 ✓ Closing observed
07-12 15:48 20m +2 / - VR2VAZ - / -9 2 ✓ Closing fragment
07-10 16:26 20m -8 / -8 R3LDK 0 / -13 5 ✓ Full exchange observed
07-10 16:21 20m -8 / - IQ4JO - / -10 2 ✓ Closing fragment
07-10 16:07 20m - / -7 RC9WC -20 / - 2 Partial capture
07-10 16:06 20m -5 / - SQ7LQT - / -16 2 ✓ Closing fragment
07-10 16:01 20m -4 / - UA0L - / - 2 ✓ Closing fragment
07-10 15:57 20m -6 / - BI9CLT - / - 2 ✓ Closing fragment
07-10 08:22 20m - / -11 ON6AA +4 / - 2 Partial capture
07-10 08:09 20m - / - ON6AA +3 / - 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
160715  +2 2720  JH3IEG IQ4JO JN63
150400 -17 1990  JH3IEG R7DX 73
205130  -5  376  JH3IEG SP4TKA KO14 (x4)
205530  -8 3059  JH3IEG R3ZBR KO80 (x3)
205800  -2 2444  JH3IEG SQ9BC -12
205800  -9 3058  JH3IEG R3ZBR RR73
205830  -2 2444  JH3IEG SQ9BC -12 (x3)
20m 
UTC    dB Audio  Message
152115 -17 1339  JH3IEG G6OTZ IO92
152130  -4 3010  BA6CC JH3IEG -11 (x2)
152215 -23 1340  JH3IEG G6OTZ IO92
152230  -5 3010  RZ9WA JH3IEG -13
152345 -16 1339  JH3IEG G6OTZ IO92 (x2)
154145 -10 3074  CQ JH3IEG PM74
154315  -8 3074  PD4WAC JH3IEG -15
154415  -8 3074  CQ JH3IEG PM74
154430 -12 3074  JH3IEG TA4SSK KM57
154445  -8 3075  BD6KDG JH3IEG -08
154630 -11 1163  JH3IEG F1JPG JN06 (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.

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