R4HEA — 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 R4HEA, decoded by SO8OO in southeastern Poland. 787 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 52 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-25.
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 787 FT8 messages attributed to R4HEA as the transmitting token by decoded message structure across 52 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (51%), followed by 80 m (21%) and 40 m (17%). Most decodes (76%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.
Overview
Bands
Last attributed message: 2026-10-25 20:28 UTC
Observed FT8 message patterns
- Attributed sample
- 787 messages
- Active dates
- 52 UTC dates
- Estimated median S/N
- -11 dB
- Estimated 10th-90th percentile
- -19.1 to -1 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 206, moderate (-15 to -9 dB) 304, strong (≥ -8 dB) 277.
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 R4HEA 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 R4HEA
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 · 364 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 2,036 km (approx.)
- Last such locator decoded
- 2026-10-25 20:28 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 | R4HEA S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-25 20:24 | 80m | - / +5 | RA3PDL | +7 / - | 2 | ✓ Closing fragment |
| 10-25 20:10 | 80m | -18 / -16 | DD0IPA | -14 / - | 8 | Partial capture |
| 10-25 19:48 | 80m | -16 / - | SP8HDC | - / -18 | 4 | ✓ Closing fragment |
| 10-25 19:28 | 80m | - / - | IZ4ORF | +4 / - | 2 | Partial capture |
| 10-25 19:27 | 80m | - / - | DA6DNA | -5 / - | 4 | Partial capture |
| 10-25 19:24 | 80m | -6 / - | R2BPS | - / -19 | 2 | ✓ Closing fragment |
| 10-25 19:21 | 80m | -4 / +1 | R3PLA | -2 / -7 | 4 | ✓ Full exchange observed |
| 10-25 19:21 | 80m | -8 / - | RX3DRC | -11 / -8 | 3 | ✓ Closing observed |
| 10-25 19:19 | 80m | -6 / -3 | R3KDT | +1 / +1 | 5 | ✓ Full exchange observed |
| 10-25 19:18 | 80m | -11 / - | R4ABW | -8 / - | 3 | ✓ Closing observed |
| 10-25 19:13 | 80m | -15 / - | R9FFJ | -9 / - | 3 | ✓ Closing observed |
| 10-25 18:57 | 80m | -6 / - | SP9YGD | +6 / -18 | 4 | ✓ Closing observed |
| 10-25 18:54 | 80m | -4 / -13 | RW1AI | -6 / -10 | 4 | ✓ Full exchange observed |
| 10-25 18:50 | 80m | - / - | RN3YN | -14 / - | 2 | ✓ Closing fragment |
| 10-25 18:47 | 80m | - / -10 | YO3FWL | -9 / - | 2 | ✓ Closing fragment |
| 10-25 18:44 | 80m | -6 / - | 9A1KO | -1 / -14 | 2 | ✓ Closing observed |
| 10-25 18:41 | 80m | -5 / -9 | EW4DX | -8 / - | 4 | ✓ Closing observed |
| 10-25 18:40 | 80m | -4 / - | RD3AD | -6 / - | 3 | ✓ Closing observed |
| 10-25 18:37 | 80m | 0 / - | UB6OAJ | - / -1 | 2 | Partial capture |
| 10-25 18:36 | 80m | 0 / - | RV3SBS | -17 / -16 | 3 | ✓ Closing observed |
| 10-25 18:34 | 80m | -4 / 0 | RK4UZ | -7 / 0 | 5 | ✓ Full exchange observed |
| 10-25 18:33 | 80m | -13 / -3 | UA4POO | -12 / +3 | 5 | ✓ Full exchange observed |
| 10-25 18:31 | 80m | -10 / - | R2DX/3 | +4 / - | 2 | Partial capture |
| 10-25 15:35 | 80m | -15 / - | R5QA | - / -10 | 5 | Partial capture |
| 10-25 15:32 | 80m | -11 / - | RK4UZ | -10 / +1 | 3 | Partial capture |
| 10-25 15:31 | 80m | -11 / -11 | RO3ZW | -4 / -5 | 5 | ✓ Full exchange observed |
| 10-25 14:53 | 80m | - / -18 | R2DAR | -11 / - | 2 | ✓ Closing fragment |
| 10-25 14:50 | 80m | - / 0 | R3UG | -10 / - | 2 | ✓ Closing fragment |
| 10-25 14:48 | 80m | - / -10 | OH7UE | +2 / - | 2 | ✓ Closing fragment |
| 10-10 21:11 | 80m | - / - | EA1IOK | +1 / - | 3 | Partial capture |
| 10-10 21:11 | 80m | -1 / -7 | OM3PR | +2 / -18 | 6 | ✓ Full exchange observed |
| 10-10 21:10 | 80m | +1 / - | R6YG | - / -21 | 3 | ✓ Closing fragment |
| 10-10 20:52 | 80m | -6 / -14 | UC6D | +2 / - | 3 | ✓ Closing observed |
| 10-10 20:51 | 80m | +3 / - | R5AV | +6 / - | 2 | ✓ Closing observed |
| 10-10 20:48 | 80m | -5 / -15 | DO2SK | +4 / -21 | 5 | ✓ Full exchange observed |
| 10-10 20:46 | 80m | - / -14 | RA3PGR | -4 / - | 2 | ✓ Closing fragment |
| 10-10 20:37 | 80m | -9 / -18 | 4Z5AV | -11 / -15 | 3 | ✓ Full exchange observed |
| 10-10 20:23 | 80m | -10 / -14 | 9A5E | +6 / -16 | 6 | ✓ Full exchange observed |
| 10-10 20:19 | 80m | - / -6 | I4HRH | -5 / - | 2 | ✓ Closing fragment |
| 10-10 20:15 | 80m | - / -12 | SQ6WA | -8 / - | 2 | ✓ Closing fragment |
| 10-10 20:12 | 80m | -18 / -13 | E75C | -2 / -13 | 4 | ✓ Full exchange observed |
| 10-10 20:10 | 80m | -14 / +1 | YO3AI | -2 / -15 | 4 | ✓ Full exchange observed |
| 10-10 20:03 | 80m | -12 / -21 | II5GG | -2 / - | 4 | ✓ Closing observed |
| 10-02 19:16 | 80m | -9 / 0 | IQ9SZ/7 | +1 / -16 | 8 | Partial capture |
| 10-02 17:29 | 80m | -4 / -11 | PA3FPQ | +4 / -11 | 9 | ✓ Full exchange observed |
| 10-02 17:27 | 80m | -20 / -9 | DB100FT | +5 / -11 | 3 | Partial capture |
| 10-02 15:59 | 80m | - / -9 | RN3TT | -12 / - | 2 | ✓ Closing fragment |
| 10-02 15:49 | 80m | - / -3 | EU2ABM | -9 / - | 3 | ✓ Closing fragment |
| 10-02 15:44 | 80m | -10 / -5 | UB3ADO/P | -12 / -1 | 2 | Partial capture |
| 10-02 15:43 | 80m | -10 / - | RG4H | - / +5 | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 194945 -18 1477 SP8HDC R4HEA LO53 (x3) 201015 -18 1917 DD0IPA R4HEA LO53 201030 -10 1917 R4HEA DD0IPA -16 (x7) 202030 -10 867 SP7VCL R4HEA LO53 202400 +7 658 R4HEA RA3PDL +05 (x2) 202845 -15 2221 IZ4CCL R4HEA LO53
UTC dB Audio Message 195000 -2 2239 R4HEA II4IANT -12 195015 -3 2239 II4IANT R4HEA R-05 195100 +6 2339 R4HEA R7GA LN14 195100 +0 1660 R4HEA IK6GPZ JN62 (x2) 195145 -13 1660 IK6GPZ R4HEA -08 (x2) 195230 +4 2339 R4HEA R7GA LN14 195245 -1 2338 R7GA R4HEA -01 (x2) 195330 +3 2339 R4HEA R7GA 73 195545 -13 1585 DK5AN/P R4HEA R-19 (x2) 185645 -19 905 R4HEA SM5TSP -15 194245 -9 1203 R4HEA F4FYO -18
UTC dB Audio Message 155115 +11 2872 M0LAD R4HEA LO53 155145 -1 1639 R6OV R4HEA R-22 (x5) 155730 -2 2103 R1BRS R4HEA LO53 (x3) 155900 -8 1341 VE7ZAX R4HEA LO53 (x5) 160530 -1 2103 R1BRS R4HEA LO53
UTC dB Audio Message 184245 -16 2250 R4HEA YT2TOR -13 (x2) 155745 -10 813 R4HEA UA9MA +02 (x2) 091400 -11 1103 R4HEA F5LHI JN33 (x2)
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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