RA4P — 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: European Russia Most frequent locator attributed to this token: LO64

Receiver-side FT8 activity involving RA4P, decoded by SO8OO in southeastern Poland. 597 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 71 UTC dates in the available aggregate history. Observed between 2026-06-13 and 2026-10-23.

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 597 FT8 messages attributed to RA4P as the transmitting token by decoded message structure across 71 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (44%), followed by 160 m (24%) and 40 m (16%). Most decodes (82%) 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 -12.5 dB.

Overview

597
Messages attributed
71
UTC dates decoded
166
Active 15-min windows
-12.5 dB
Estimated median S/N

Bands

First attributed message: 2026-06-13
Last attributed message: 2026-10-23 20:48 UTC

Observed FT8 message patterns

Attributed sample
597 messages
Active dates
71 UTC dates
Estimated median S/N
-12.5 dB
Estimated 10th-90th percentile
-21 to -4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 195, moderate (-15 to -9 dB) 230, strong (≥ -8 dB) 172.

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.

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 RA4P

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
LO64 · 345 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
2,166 km (approx.)
Last such locator decoded
2026-10-23 20:48 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 UTCBandRA4P S/NCounterpartCounterpart S/NMsgsCapture
10-23 19:02 80m -11 / - RU6LC - / - 8 Partial capture
10-23 17:15 40m - / 0 R3PCB -2 / - 2 ✓ Closing fragment
10-23 17:00 40m -12 / - R6ZAC -13 / - 2 ✓ Closing observed
10-22 16:52 80m - / -19 R1QF/P -16 / - 2 ✓ Closing fragment
10-22 16:40 160m - / -8 RO3ZW -16 / - 2 ✓ Closing fragment
10-21 13:41 160m - / - R7MR -6 / - 2 ✓ Closing fragment
10-21 05:37 40m - / -20 P4/WE9V +4 / - 2 Partial capture
10-21 05:32 40m - / -10 R7OI -6 / - 5 Partial capture
10-16 19:10 80m -4 / - RX9CN - / - 4 Partial capture
10-16 18:56 80m -6 / - RX9CN - / - 2 Partial capture
10-16 17:53 40m -18 / - UB0SDP - / - 3 Partial capture
10-15 18:37 80m -11 / - RC6BB - / -16 2 ✓ Closing fragment
10-15 18:34 80m -9 / - R9SFZ - / - 3 Partial capture
10-14 18:19 80m -14 / - R9CS/P - / - 3 Partial capture
10-14 18:10 80m - / -6 RY4ABB -9 / - 2 ✓ Closing fragment
10-13 16:15 80m - / - EW4DX -16 / - 2 Partial capture
10-13 16:14 80m -11 / - RA4P/P - / -5 2 Partial capture
10-09 18:20 40m - / -5 TA3NK -10 / - 2 Partial capture
10-09 18:08 40m - / -15 RU1QX -7 / - 4 Partial capture
10-09 18:02 40m - / -13 IR8PR -10 / - 3 ✓ Closing fragment
10-09 17:59 40m - / - R3YBG -5 / - 2 Partial capture
10-09 17:53 40m - / -15 R6DJR 0 / - 4 ✓ Closing fragment
10-09 17:33 40m -16 / - UB1AUW - / -6 3 ✓ Closing fragment
10-09 17:32 40m -15 / - RA6FCU/P - / +2 2 ✓ Closing fragment
10-09 17:26 40m - / -12 UB1AUW -1 / - 2 Partial capture
10-08 19:58 160m - / -16 RU4CK -16 / - 3 ✓ Closing fragment
10-08 15:26 80m - / -4 RA3BY -14 / - 2 ✓ Closing fragment
10-08 15:20 80m - / - RA3BY -4 / - 5 Partial capture
10-07 19:06 40m -18 / - BG2MEI - / - 3 Partial capture
10-07 18:45 80m -9 / -18 R1BLO/P -10 / -18 5 ✓ Full exchange observed
10-07 16:01 160m -22 / - RX9KJ - / -17 2 Partial capture
10-07 16:00 160m -18 / - R8KAW/P - / -17 2 ✓ Closing fragment
10-07 15:57 160m -19 / - RX9KJ - / - 4 Partial capture
10-07 15:55 160m -16 / - R8KAW/P - / - 2 Partial capture
10-06 18:05 160m - / - RN3AOE -18 / - 2 Partial capture
10-06 16:24 80m -11 / - RM6OB - / - 3 Partial capture
10-06 04:16 40m - / -1 RC9WC -10 / - 2 Partial capture
10-06 04:16 40m - / -3 RD3FY -8 / - 4 ✓ Closing fragment
10-06 04:15 40m -21 / - R6OV -22 / -23 2 ✓ Closing observed
10-05 17:19 80m - / +3 R80SAA -7 / - 2 ✓ Closing fragment
10-02 20:07 160m - / - PA3DUU -4 / - 7 Partial capture
10-01 22:48 80m -4 / - GW8DX - / -7 3 ✓ Closing fragment
10-01 21:08 80m -5 / - UN0GY - / -3 2 ✓ Closing fragment
09-23 15:14 40m -8 / - RZ9OL/M - / -10 3 Partial capture
09-21 16:25 80m -12 / -16 R6KY +5 / - 4 ✓ Closing observed
09-20 18:06 160m -11 / - UA3IDQ -19 / -21 4 ✓ Closing observed
09-20 18:01 160m -2 / - UA6XY -11 / -18 2 ✓ Closing observed
09-20 17:47 160m -23 / - UA3IDQ - / - 2 Partial capture
09-20 17:35 160m -21 / - UA3IDQ - / - 2 Partial capture
09-17 20:15 160m -13 / - RI1FJZ - / - 3 Partial capture

Recent FT8 messages decoded at SO8OO

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

160m
UTC    dB Audio  Message
160115 -19 2029  R8KAW/P RA4P 73
160145 -22 2029  RX9KJ RA4P LO64 (x2)
195830 -17 1080  RA4P RU4CK -16 (x3)
195500 -12 1806  RA4P IK5SRB JN63
134115  -8  549  RA4P R7MR RRR (x2)
195530 -23 1878  R4FES RA4P LO64
164045 -19 1976  RA4P RO3ZW -08 (x2)
174015 -24 1877  CQ RA4P LO64
174130  -9 1452  RA4P RJ3DC KO95
204800 -16 1788  CQ RA4P LO64
80m
UTC    dB Audio  Message
191030  -4  924  RX9CN RA4P LO64 (x3)
153000 -23 2052  RA4P UN2G 73
165230 -20 2104  RA4P R1QF/P -19 (x2)
190215 -14 1877  RU6LC RA4P LO64 (x8)
190815 -11 1877  R4SCQ RA4P RR73
40m
UTC    dB Audio  Message
182215 -14 1040  RA4P TA3NK R-05
175315 -19 1616  UB0SDP RA4P LO64 (x3)
053200  -2 1139  RA4P R7OI -10 (x5)
053730  +5  833  RA4P P4/WE9V -20 (x2)
170045 -13 1540  RA4P R6ZAC RR73
170100 -12 2062  R6ZAC RA4P 73
171530  -1  530  RA4P R3PCB +00 (x2)
20m
UTC    dB Audio  Message
032615 -13 2461  R9FEM RA4P LO64
030400 -10 2397  N7RLK RA4P LO64 (x2)
030615  +6 2396  <...> RA4P LO64 (x2)
030815  +6 2396  KJ5PTH RA4P LO64 (x4)
130230  +4 1552  RA4P ON3MOH JO10 (x4)
200615  +6 2452  <...> RA4P LO64 (x2)
10m
UTC    dB Audio  Message
205830 -15 2039  RA4P PA3GMD JO21 (x3)
200700 -12  595  PR7KY RA4P -05 (x2)
200800 -13  595  CQ RA4P LO64                        ? a1 (x3)
201600  -9  594  YU2SA RA4P RR73
201630 -11  594  CQ RA4P LO64                          a1 (x5)
091130 -15 1267  RA4P F4NJZ R-18

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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