R4ADD — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Locator transmitted in a decoded message: LN28

Receiver-side FT8 activity involving R4ADD, decoded by SO8OO in southeastern Poland. 353 related FT8 messages, 66 CQ messages, observed on 80m, 40m, 20m, 10m, across 53 UTC dates. Heard between 2026-05-26 and 2026-08-23.

These are automated observations at the SO8OO receiver, not the station's official logbook. Times are UTC. Decoder S/N describes messages received at SO8OO; inferred entity and location data may be inaccurate for portable, remote or special-event operation.

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Overview

353
Related messages
66
CQ messages
53
UTC dates heard
-6 dB
Mean decoder S/N

Bands

80m 40m 20m 10m
First seen: 2026-05-26
Last seen: 2026-08-23 16:53 UTC

Frequent QSO partners observed at SO8OO

Stations R4ADD worked most often, as logged from our receiver:

Activity Heatmap

Locator transmitted by R4ADD

Approximate centre of LN28, decoded 2026-08-23 18:58 UTC. A transmitted locator is not proof of the operator's permanent location.

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 UTCBandR4ADD S/NCounterpartCounterpart S/NMsgsCapture
08-23 18:57 80m -16 / - RA0SCA - / -10 3 Partial capture
08-23 03:59 40m -21 / - R3DOE/P - / -11 2 ✓ Closing fragment
08-19 13:59 20m -9 / - F4BNZ - / -17 3 Partial capture
08-16 18:01 20m -4 / - JH4VTV - / - 3 Partial capture
08-16 17:07 20m -2 / -12 GW4AYJ -2 / -9 7 ✓ Full exchange observed
08-16 14:45 20m -4 / - <...> - / -9 4 Partial capture
08-15 17:39 20m -6 / - 5B4ARQ - / -16 3 ✓ Closing fragment
08-15 17:38 20m -5 / - RW3C/P - / -5 2 Partial capture
08-13 19:08 80m - / -2 EW8AAC -2 / - 2 ✓ Closing fragment
08-12 19:28 80m - / - R2FEA +19 / - 2 Partial capture
08-12 19:27 80m -12 / -18 YO4LUP -1 / -15 5 ✓ Full exchange observed
08-11 19:51 20m -14 / -7 F4AFO -10 / -6 5 ✓ Full exchange observed
08-11 19:48 20m -13 / - F4AFO - / -10 2 Partial capture
08-09 19:23 40m - / +3 R9CS/P -4 / - 2 ✓ Closing fragment
08-09 19:10 20m - / -2 F4BPO -10 / - 2 ✓ Closing fragment
08-09 14:13 20m -18 / - GS4AGG - / -17 2 ✓ Closing fragment
08-08 05:23 20m -13 / -3 UA3VVA -14 / 0 3 ✓ Full exchange observed
08-08 01:51 40m - / - PD0LBY -20 / - 6 Partial capture
08-07 17:40 80m 0 / - RV9FF -14 / -5 4 ✓ Closing observed
08-07 17:17 20m -1 / -10 GW4BKG -14 / -6 4 ✓ Full exchange observed
08-07 04:16 20m -4 / - ZL2BX - / -12 2 Partial capture
08-07 04:12 20m -6 / - RA4AG - / -22 4 Partial capture
08-06 18:30 20m -8 / - RW3DDZ - / -9 2 ✓ Closing fragment
08-06 18:29 20m -3 / - R4PHH - / -6 2 ✓ Closing fragment
08-06 18:25 20m -7 / - RW3DDZ - / -8 3 ✓ Closing fragment
08-06 18:23 20m +2 / - 5B4AJG - / -13 2 Partial capture
08-06 18:14 20m -3 / - R9WH/P - / - 2 Partial capture
08-06 18:09 20m -3 / - R9WH/P - / -5 2 Partial capture
08-06 17:58 20m +2 / - OE4AHG - / - 2 Partial capture
08-06 17:54 20m 0 / -18 GX4BRA -14 / -11 5 ✓ Full exchange observed
08-06 14:48 20m 0 / -8 UB4AFW -6 / -9 4 ✓ Full exchange observed
08-06 13:26 20m -16 / - BI4AEL - / -14 4 Partial capture
08-05 19:31 80m -12 / - RT4A 0 / -15 4 ✓ Closing observed
08-05 19:15 20m -7 / - BH4ECL - / -7 3 ✓ Closing fragment
08-05 19:14 20m -5 / - F1PPH -6 / -15 2 Partial capture
08-05 07:00 20m -12 / - IZ4AFM -5 / -11 3 ✓ Closing observed
08-02 19:58 80m -3 / - RX6AOB - / -1 2 Partial capture
08-02 19:52 80m -3 / - 5Z4AB - / 0 8 ✓ Closing fragment
08-02 19:46 80m +1 / - 5Z4AB - / -16 7 Partial capture
08-02 09:27 20m -14 / -7 PD4RJ -2 / -2 4 ✓ Full exchange observed
08-01 19:34 80m -9 / -7 UB3ADO/P -12 / -10 4 ✓ Full exchange observed
08-01 19:04 20m +1 / +8 ON4BRO +3 / -12 5 ✓ Full exchange observed
08-01 19:03 20m +2 / - SA4AGM - / - 2 Partial capture
07-31 19:13 80m -8 / - UB3ADO/P - / -7 2 ✓ Closing fragment
07-31 19:12 80m - / -10 RN3DDW/P -12 / - 2 ✓ Closing fragment
07-31 19:06 40m -15 / -3 RU4AJ -7 / - 4 ✓ Closing observed
07-30 20:10 40m -10 / - PA4AV - / -14 2 Partial capture
07-30 20:08 40m -13 / - JE1LFX - / -13 2 ✓ Closing fragment
07-30 19:44 20m -3 / - PD0SF - / -12 2 ✓ Closing fragment
07-30 19:43 20m -10 / -14 PD5FS -7 / -10 5 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
174115  +4  641  RV9FF R4ADD R-05 (x2)
192745  +0 1098  R4ADD YO4LUP KN43
192745  -7  768  R4ADD R9RA 73
192800 -16  810  YO4LUP R4ADD -15
192815  -3 1098  R4ADD YO4LUP R-18
192830  -9  810  YO4LUP R4ADD RR73
192845  +0 1098  R4ADD YO4LUP 73
192845 +18  810  R4ADD R2FEA KO04 (x2)
190800  +0 1222  R4ADD EW8AAC -02 (x2)
185745 -24  882  RA0SCA R4ADD -10 (x3)
40m 
UTC    dB Audio  Message
173615  -7  684  R4ADD UB3LBU 73
015100 -21 1533  R4ADD PD0LBY JO22 (x6)
192315  -3 2971  R4ADD R9CS/P R+03 (x2)
173415 -13  732  5B4AMM R4ADD -03
035915 -20 1029  R3DOE/P R4ADD -11 (x2)
040330 -16 1029  UB6LLI R4ADD RR73
185300  -4  814  UB0SMX/P R4ADD -04
185315 -15 2260  R4ADD R2ZJJ/M R+15
20m 
UTC    dB Audio  Message
144745  -3  875  <...> R4ADD R-21
144915 -10  874  R3DFE/M R4ADD R-25
170745  -3  919  GW4AYJ R4ADD -09 (x2)
170830  +0  541  R4ADD GW4AYJ R-12
170845  -3  919  GW4AYJ R4ADD RR73
170900  +0  541  R4ADD GW4AYJ R-12
170915  -3  919  GW4AYJ R4ADD RR73
170930  -5  541  R4ADD GW4AYJ 73
180115  -8  689  JH4VTV R4ADD LN28 (x3)
135915  -8 1006  F4BNZ R4ADD -17 (x3)
10m 
UTC    dB Audio  Message
093115  -7  728  R4ADD R5AV +00 (x2)
093645 -11  727  YO4ASD R4ADD -06 (x2)
082615 -18 1363  R4ADD R4CR -13 (x3)
075315 -16  940  R2DYC R4ADD R-12

Decoder S/N history by band

Daily averages across messages associated with this profile as decoded at SO8OO.