R4HAI — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving R4HAI, decoded by SO8OO in southeastern Poland. 17 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-07-29 and 2026-07-30.
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 17 FT8 messages attributed to R4HAI as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (94%), followed by 40 m (6%). In this small sample, the estimated median decoder S/N was -9 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-07-30 18:07 UTC
Observed FT8 message patterns
- Attributed sample
- 17 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -9 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 9, strong (≥ -8 dB) 7.
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 R4HAI in decoded directed-looking exchanges:
Most frequent locator attributed to R4HAI
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
- LO53 · 7 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 2,036 km (approx.)
- Last such locator decoded
- 2026-07-30 17:40 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 | R4HAI S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-22 18:04 | 40m | - / -14 | DD7EE | -1 / - | 2 | ✓ Closing fragment |
| 10-22 18:04 | 40m | - / -3 | SV1ENG | -5 / - | 3 | ✓ Closing fragment |
| 10-22 17:10 | 40m | - / -15 | 5B4AAB | -4 / - | 3 | ✓ Closing fragment |
| 10-22 17:07 | 40m | - / - | PA7D | -12 / - | 2 | Partial capture |
| 10-22 17:05 | 40m | - / - | ON4ASV | +6 / - | 2 | Partial capture |
| 10-22 17:04 | 40m | - / -14 | R2ZL | -8 / - | 2 | ✓ Closing fragment |
| 10-20 17:25 | 40m | - / - | OV5SP | -16 / - | 4 | Partial capture |
| 10-20 17:22 | 40m | - / -10 | R1CBW | -10 / - | 2 | ✓ Closing fragment |
| 10-20 17:19 | 40m | - / - | SP5CJQ | -10 / - | 2 | ✓ Closing fragment |
| 10-20 17:18 | 40m | - / - | R1DD | -8 / - | 3 | Partial capture |
| 10-20 17:13 | 40m | - / -11 | R6DVV | -9 / - | 2 | ✓ Closing fragment |
| 10-20 17:07 | 40m | - / -5 | R6ADH | -21 / - | 3 | ✓ Closing fragment |
| 10-20 16:59 | 40m | - / -20 | DK7ZT | -4 / - | 4 | Partial capture |
| 10-20 16:52 | 40m | - / -4 | YL3CW | +4 / - | 2 | ✓ Closing fragment |
| 10-20 16:45 | 40m | - / -1 | R5AV | -6 / - | 2 | ✓ Closing fragment |
| 10-20 16:43 | 40m | - / - | RC2Y | -8 / - | 4 | Partial capture |
| 10-20 16:42 | 40m | - / - | PA2DX | -1 / - | 6 | Partial capture |
| 10-20 16:40 | 40m | - / -17 | DK7ZT | -3 / - | 3 | Partial capture |
| 10-20 16:35 | 40m | - / - | R1NO | -7 / - | 3 | Partial capture |
| 10-20 16:26 | 40m | - / -1 | R6ML | -9 / - | 3 | ✓ Closing fragment |
| 10-20 16:20 | 40m | - / -12 | R1QF | -12 / - | 2 | Partial capture |
| 10-20 16:19 | 40m | - / -20 | UA3POG | -11 / - | 5 | Partial capture |
| 10-20 16:18 | 40m | - / - | S51UN | -5 / - | 4 | Partial capture |
| 10-20 16:17 | 40m | - / -5 | RV6HE | -6 / - | 2 | Partial capture |
| 10-16 19:38 | 40m | - / - | F4BYA | +2 / - | 4 | Partial capture |
| 10-16 19:38 | 40m | - / - | PA7D | -11 / - | 4 | Partial capture |
| 10-16 18:53 | 40m | - / -8 | ON3MOH | -5 / - | 4 | Partial capture |
| 10-11 18:29 | 40m | - / - | SV1ENG | -6 / - | 2 | Partial capture |
| 10-11 17:48 | 40m | - / -12 | DK7ZT | -6 / - | 4 | Partial capture |
| 10-11 17:31 | 40m | - / -11 | RD3FY | -4 / - | 13 | ✓ Closing fragment |
| 10-11 17:23 | 40m | - / -7 | RZ3DW | -11 / - | 3 | ✓ Closing fragment |
| 10-07 16:52 | 40m | - / - | F4BYA | +5 / - | 3 | Partial capture |
| 10-07 16:51 | 40m | - / - | PA8DC | -1 / - | 3 | Partial capture |
| 10-07 16:43 | 40m | - / - | RA3WPF | -18 / - | 3 | Partial capture |
| 10-07 16:34 | 40m | - / - | F4BYA | -6 / - | 4 | Partial capture |
| 10-07 16:34 | 40m | - / - | ON1AJ | -4 / - | 4 | Partial capture |
| 10-07 16:29 | 40m | - / -11 | R1QF | +2 / - | 2 | Partial capture |
| 10-07 16:23 | 40m | - / - | S52D | +7 / - | 4 | Partial capture |
| 10-06 17:49 | 40m | - / - | DF3IS | -1 / - | 4 | Partial capture |
| 10-06 17:41 | 40m | - / -13 | R1AI | -12 / - | 2 | ✓ Closing fragment |
| 10-06 17:30 | 40m | - / - | DF3IS | 0 / - | 4 | Partial capture |
| 10-06 17:28 | 40m | - / - | RD3FY | -3 / - | 4 | Partial capture |
| 10-06 17:27 | 40m | - / -17 | R3DMS | -4 / - | 2 | Partial capture |
| 10-02 17:56 | 40m | - / - | TA3NK | -10 / - | 6 | Partial capture |
| 10-02 17:05 | 40m | - / - | DC9GT | -14 / - | 2 | Partial capture |
| 10-02 17:02 | 40m | - / -12 | R6ZCE | -6 / - | 2 | ✓ Closing fragment |
| 08-16 18:22 | 40m | - / -6 | UC6D | -5 / - | 4 | ✓ Closing fragment |
| 08-03 19:17 | 40m | - / -11 | RA3TVW | -15 / - | 3 | Partial capture |
| 08-03 18:57 | 40m | - / -18 | DH0GBC | -10 / - | 10 | Partial capture |
| 08-03 18:41 | 40m | - / -13 | UA4FKT | -5 / - | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 174400 -6 1971 R4HAI IQ4JO JN63 170400 -10 1526 R4HAI R2ZL -14 (x2) 170530 +4 1725 R4HAI ON4ASV JO11 (x2) 170700 -11 1726 R4HAI PA7D JO23 (x2) 171030 -7 969 R4HAI 5B4AAB -15 (x3) 180400 -8 2103 R4HAI SV1ENG KM18 180400 +0 912 R4HAI DD7EE -14 (x2) 180530 -7 598 R4HAI SV1ENG R-03 (x2)
UTC dB Audio Message 163400 -1 580 R4HAI DF0KK JO31 163430 -8 2572 R4HAI PE9JAN JO22 163430 -7 580 R4HAI DF0KK JO31 173645 -5 425 CQ R4HAI LO53 173700 -3 425 R4HAI I1RJP JN45 173715 -2 425 I1RJP R4HAI -13 173730 +3 426 R4HAI I1RJP R-14 173745 -12 426 I1RJP R4HAI -13 173800 +2 425 R4HAI I1RJP R-14 173815 -11 426 I1RJP R4HAI -13 173830 +0 425 R4HAI I1RJP R-14 173845 -8 426 I1RJP R4HAI -13 173930 -2 427 R4HAI I1RJP R-08 173945 -3 427 I1RJP R4HAI -13 174045 -1 427 US5WFL R4HAI LO53
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.
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