JJ3JHP — 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: PM75

Receiver-side FT8 activity involving JJ3JHP, decoded by SO8OO in southeastern Poland. 410 FT8 messages attributed to this token as transmitter, on 80m, across 18 UTC dates in the available aggregate history. Observed between 2026-09-14 and 2026-11-05.

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 410 FT8 messages attributed to JJ3JHP as the transmitting token by decoded message structure across 18 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (100%). 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 -10 dB.

Overview

410
Messages attributed
18
UTC dates decoded
62
Active 15-min windows
-10 dB
Estimated median S/N

Bands

80m · 410
First attributed message: 2026-09-14
Last attributed message: 2026-11-05 21:43 UTC

Observed FT8 message patterns

Attributed sample
410 messages
Active dates
18 UTC dates
Estimated median S/N
-10 dB
Estimated 10th-90th percentile
-16 to -2 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 57, moderate (-15 to -9 dB) 211, strong (≥ -8 dB) 142.

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 JJ3JHP 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 JJ3JHP

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
PM75 · 242 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,477 km (approx.)
Last such locator decoded
2026-11-05 21:43 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 UTCBandJJ3JHP S/NCounterpartCounterpart S/NMsgsCapture
11-05 22:00 80m - / -7 SP6JIU +20 / - 2 ✓ Closing fragment
11-05 21:56 80m - / -15 IT9EJW 0 / - 3 ✓ Closing fragment
11-05 21:54 80m - / -14 IZ5IMD -11 / - 3 ✓ Closing fragment
11-05 21:47 80m - / - SP4JSR 0 / - 2 Partial capture
11-05 21:47 80m - / - DL8AKI +3 / - 2 Partial capture
11-05 21:29 80m - / -18 MM0EAX -3 / - 4 ✓ Closing fragment
11-05 21:25 80m - / -18 SP5AA +9 / - 2 ✓ Closing fragment
11-05 21:20 80m - / -23 ON6LEO 0 / - 2 ✓ Closing fragment
11-05 21:14 80m - / - IT9EJW +6 / - 2 Partial capture
11-05 21:08 80m - / - DL5BWG -10 / - 7 Partial capture
11-05 21:04 80m - / - F4EZJ -4 / - 4 Partial capture
11-05 21:01 80m - / -11 DL6EI +8 / - 2 ✓ Closing fragment
11-05 20:37 80m - / - F4EZJ 0 / - 5 Partial capture
11-05 20:30 80m - / - HG1DBQ +6 / - 5 Partial capture
11-05 20:30 80m - / -22 RA3BQ -4 / - 3 Partial capture
11-05 20:29 80m - / - OK1FED -4 / - 2 Partial capture
11-05 13:21 80m - / -1 OH1MLZ -9 / - 4 ✓ Closing fragment
11-03 21:50 80m - / -12 SV2JU -8 / - 2 Partial capture
11-03 21:46 80m -15 / - CT1BWU -14 / -15 3 Partial capture
11-03 21:46 80m - / - IZ0BVU 0 / - 2 Partial capture
11-03 21:46 80m - / -18 UR5ZHJ -4 / - 5 Partial capture
11-03 21:45 80m -14 / -14 IK6QRE 0 / -21 7 ✓ Full exchange observed
11-03 21:45 80m - / -22 R6NA +3 / - 3 ✓ Closing fragment
11-03 21:43 80m - / - F6KHM -17 / - 2 Partial capture
11-03 21:42 80m - / -21 OK2BUZ -2 / - 6 ✓ Closing fragment
11-03 21:42 80m -12 / -21 OM2WQ -3 / -9 4 ✓ Full exchange observed
11-03 21:39 80m -12 / -19 OM3RP +2 / -15 5 ✓ Full exchange observed
11-03 21:38 80m - / - DH0GSU +2 / - 17 Partial capture
11-03 21:37 80m - / - F6KHM -14 / - 7 Partial capture
11-03 21:36 80m -10 / - TA4SSK - / -21 2 ✓ Closing fragment
11-03 20:12 80m - / -12 IK1MJL +6 / - 5 ✓ Closing fragment
11-03 20:06 80m - / -16 DL8AKI +7 / - 11 ✓ Closing fragment
11-03 20:06 80m - / -18 PI40EUDXF +6 / - 3 Partial capture
11-03 20:01 80m - / - YO5QDI -7 / - 6 Partial capture
11-02 21:29 80m - / - EA5RR -6 / - 3 Partial capture
11-02 21:28 80m - / - SV8JNR -9 / - 3 Partial capture
11-02 20:13 80m - / - SP5KG +8 / - 2 Partial capture
11-02 20:13 80m - / - UA6BRD -6 / - 2 ✓ Closing fragment
11-02 20:01 80m - / -22 R6FFB -3 / - 3 ✓ Closing fragment
11-02 19:52 80m - / - OZ4VV +4 / - 2 Partial capture
11-02 19:33 80m - / - IK6HRB +3 / - 4 Partial capture
11-02 19:33 80m - / - OZ4VV +3 / - 3 Partial capture
11-02 19:31 80m - / -15 YO2MAX +13 / - 3 ✓ Closing fragment
11-02 19:28 80m - / - OZ4VV +3 / - 2 Partial capture
11-02 19:27 80m - / -12 UR7EU -4 / - 3 ✓ Closing fragment
11-02 19:25 80m - / - DL8AKI +4 / - 6 Partial capture
11-02 19:22 80m - / - OM2WQ +3 / - 2 Partial capture
11-02 19:22 80m -7 / -6 OZ1ADL 0 / - 5 ✓ Closing observed
11-02 19:21 80m - / -19 LY3I -4 / - 2 ✓ Closing fragment
11-02 19:21 80m - / - SM7OYP -10 / - 3 Partial capture

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
213130  -5  857  JJ3JHP MM0EAX 73
213500 +13 2955  JJ3JHP HA5OB JN97
214345 -24 3013  T77NM JJ3JHP PM75
214700  +0 1911  JJ3JHP DL8AKI JO51
214730  -1 3012  JJ3JHP SP4JSR KO12
214730  +6 1911  JJ3JHP DL8AKI JO51
214800  +1 3013  JJ3JHP SP4JSR KO12
215430 -15 1755  JJ3JHP IZ5IMD JN53 (x3)
215630  +0  562  JJ3JHP IT9EJW JM77 (x3)
220030 +16  469  JJ3JHP SP6JIU R-07 (x2)
160m 
UTC    dB Audio  Message
194200  +3 2200  JJ3JHP IW4AOT RR73 (x2)
194300  -1  804  JJ3JHP 4O7CC -16 (x2)
194400  -1  804  JJ3JHP RR73; YO4YPC <...> +04 (x2)
194630 +13 2688  JJ3JHP DL1RWN -16 (x2)
195630  -3 2515  JJ3JHP SV8DCY -19 (x2)
200145  +1 2448  JJ3JHP SV1BLD -15 (x5)
40m 
UTC    dB Audio  Message
203845  -8 1934  JJ3JHP PI4DX -06 (x2)
213945  -5 2880  JJ3JHP ON7NQ JO21
214115 -11  465  JJ3JHP K2ZJ FN13

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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