JA5ROH — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving JA5ROH, decoded by SO8OO in southeastern Poland. 7 FT8 messages attributed to this token as transmitter, on 20m, across 1 UTC dates in the available aggregate history. Last observed 2026-06-26.
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 7 FT8 messages attributed to JA5ROH as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was -12 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 7 messages
- Active dates
- 1 UTC dates
- Estimated median S/N
- -12 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 7, 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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with JA5ROH in decoded directed-looking exchanges:
Most frequent locator attributed to JA5ROH
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
- PM63
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,540 km (approx.)
- Last such locator decoded
- 2026-06-26 19:51 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 UTC | Band | JA5ROH S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-10 20:56 | 40m | - / - | R3XBS | -10 / - | 2 | ✓ Closing fragment |
| 09-10 20:56 | 40m | - / -25 | EI2CN | +15 / - | 2 | Partial capture |
| 08-14 20:03 | 20m | - / - | DF7JU | -2 / - | 7 | Partial capture |
| 08-13 20:22 | 20m | - / -22 | E77FN | -12 / - | 2 | ✓ Closing fragment |
| 08-13 20:08 | 20m | - / -15 | HB9SDO | -6 / - | 2 | Partial capture |
| 08-13 19:58 | 20m | - / -25 | HB9FUR | +1 / - | 3 | ✓ Closing fragment |
| 08-13 19:34 | 20m | - / -14 | ON7DJ | -8 / - | 4 | Partial capture |
| 08-13 19:30 | 20m | - / -20 | MI9PBM | -4 / - | 5 | Partial capture |
| 08-13 19:26 | 20m | - / - | MI9PBM | -7 / - | 2 | Partial capture |
| 08-12 21:03 | 20m | - / - | ON7NQ | +5 / - | 3 | Partial capture |
| 08-12 20:59 | 20m | - / -24 | PA2EW | -1 / - | 3 | ✓ Closing fragment |
| 08-12 20:38 | 20m | - / - | ON7NQ | -1 / - | 27 | Partial capture |
| 08-12 20:38 | 20m | - / -18 | OZ2SPACE | -15 / - | 2 | Partial capture |
| 08-11 21:02 | 20m | - / -15 | E74PA | -2 / - | 3 | ✓ Closing fragment |
| 08-11 20:38 | 20m | - / -16 | F5IXN | -4 / - | 3 | ✓ Closing fragment |
| 08-11 20:34 | 20m | - / - | DL1R | +2 / - | 8 | Partial capture |
| 08-11 20:31 | 20m | - / -12 | SV5BYP | -10 / - | 2 | ✓ Closing fragment |
| 08-11 20:22 | 20m | - / +1 | F1ODM | +2 / - | 5 | ✓ Closing fragment |
| 08-11 20:22 | 20m | - / - | IW3RQT | 0 / - | 2 | Partial capture |
| 08-11 20:16 | 20m | - / -6 | IZ0RPS | +6 / - | 3 | ✓ Closing fragment |
| 08-11 20:11 | 20m | - / -21 | PD0RDD | -6 / - | 5 | ✓ Closing fragment |
| 08-11 20:07 | 20m | - / - | HB9TIH | -5 / - | 3 | Partial capture |
| 08-11 20:06 | 20m | - / - | DB4MF | +2 / - | 2 | Partial capture |
| 07-14 14:13 | 20m | - / -18 | OE3UKW | -10 / - | 4 | Partial capture |
| 06-26 21:25 | 20m | - / -20 | F4MID | -5 / - | 4 | Partial capture |
| 06-26 19:59 | 20m | - / - | SV1EMY | +5 / - | 3 | Partial capture |
| 06-26 19:56 | 20m | - / -14 | F4NGC | -3 / - | 5 | Partial capture |
| 06-26 19:52 | 20m | -12 / - | IW9HMQ | -13 / -15 | 6 | Partial capture |
| 06-26 19:51 | 20m | -10 / -10 | EA1C | -11 / - | 2 | ✓ Closing observed |
| 06-26 19:51 | 20m | -12 / -10 | RX3ASQ | -22 / -12 | 4 | ✓ Full exchange observed |
| 06-26 19:49 | 20m | -12 / - | UT3UTX | - / -16 | 2 | ✓ Closing fragment |
| 06-26 19:36 | 20m | - / - | SQ2AJO | 0 / - | 2 | Partial capture |
| 06-26 19:36 | 20m | - / - | ON1PK | -20 / - | 4 | ✓ Closing fragment |
| 06-26 19:32 | 20m | - / -7 | OK1JIR | -12 / - | 2 | Partial capture |
| 06-26 19:28 | 20m | - / +5 | F5PGA | +10 / - | 3 | ✓ Closing fragment |
| 06-26 19:26 | 20m | - / -14 | DK9UD | -16 / - | 2 | ✓ Closing fragment |
| 06-26 18:03 | 20m | - / -12 | UA3ZAB | -6 / - | 2 | ✓ Closing fragment |
| 06-26 18:01 | 20m | - / -19 | EW6DM | -10 / - | 2 | ✓ Closing fragment |
| 06-26 18:00 | 20m | - / - | 9A5TW | +20 / - | 2 | Partial capture |
| 06-26 18:00 | 20m | - / - | M0VGB | -5 / - | 3 | Partial capture |
| 06-26 17:58 | 20m | - / - | SP2SGZ | -6 / - | 2 | Partial capture |
| 06-26 17:51 | 20m | - / - | 9A5TW | +11 / - | 5 | Partial capture |
| 06-26 17:51 | 20m | - / - | EA4GFG | -14 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 205615 +15 360 JA5ROH EI2CN -25 205645 -11 1117 JA5ROH R3XBS RR73 205645 +15 360 JA5ROH EI2CN -25 205715 -10 1118 JA5ROH R3XBS RR73
UTC dB Audio Message 194745 -21 1371 JA5ROH DL1KYF JO62 195815 +0 657 JA5ROH HB9FUR JN47 (x3) 200800 -8 658 JA5ROH HB9SDO JN37 (x2) 202200 -10 1387 JA5ROH E77FN R-22 (x2) 200330 +5 2574 JA5ROH DF7JU JO31 (x7)
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