RX4SA — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Locator transmitted in a decoded message: LO36

Receiver-side FT8 activity involving RX4SA, decoded by SO8OO in southeastern Poland. 1,949 related FT8 messages, 837 CQ messages, observed on 80m, 40m, 20m, 10m, across 68 UTC dates. Heard between 2026-05-24 and 2026-08-22.

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

1,949
Related messages
837
CQ messages
68
UTC dates heard
-10 dB
Mean decoder S/N

Bands

80m 40m 20m 10m
First seen: 2026-05-24
Last seen: 2026-08-22 16:28 UTC

Frequent QSO partners observed at SO8OO

Stations RX4SA worked most often, as logged from our receiver:

Activity Heatmap

Locator transmitted by RX4SA

Approximate centre of LO36, decoded 2026-08-22 18:26 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 UTCBandRX4SA S/NCounterpartCounterpart S/NMsgsCapture
08-22 18:27 40m -9 / -1 R1IO +4 / - 5 ✓ Full exchange observed
08-22 18:16 40m -11 / -18 HB9FGO +6 / -13 3 ✓ Full exchange observed
08-22 18:07 40m -8 / +1 R4FAH -6 / - 5 ✓ Full exchange observed
08-22 17:48 40m -9 / -8 DM5JBN -4 / -18 7 ✓ Full exchange observed
08-22 17:43 40m -10 / +4 R2ANL -8 / - 5 ✓ Closing observed
08-22 17:41 40m -8 / - DM5JBN - / -14 3 Partial capture
08-22 17:35 40m -10 / -12 HA7CH -4 / -17 4 ✓ Full exchange observed
08-22 17:33 40m -9 / -10 R6MC +5 / +8 6 ✓ Full exchange observed
08-22 17:30 40m -8 / - OE/DG7CF - / - 2 Partial capture
08-22 17:23 40m -18 / - UB3BDB - / -23 2 ✓ Closing fragment
08-22 17:18 40m -20 / - R3RAQ - / - 2 ✓ Closing fragment
08-22 17:15 40m -17 / -11 SP2EOE +6 / -16 3 ✓ Full exchange observed
08-22 16:34 20m -11 / - EY7BP - / - 3 Partial capture
08-21 17:38 40m -15 / - YO4LUP - / - 2 Partial capture
08-21 17:33 40m -13 / - IV3IEA - / - 3 Partial capture
08-21 17:13 40m -16 / -8 R1BPQ -18 / -15 3 ✓ Full exchange observed
08-21 17:07 40m -15 / - R9BT - / -9 2 ✓ Closing fragment
08-21 17:00 40m -16 / - SV8GXC -13 / -14 3 ✓ Closing observed
08-21 16:58 40m -16 / -3 R5GG -17 / +8 4 ✓ Full exchange observed
08-21 16:52 40m -15 / -1 R6DZD -9 / -3 5 ✓ Full exchange observed
08-21 16:44 40m -16 / - R9OEJ - / +2 3 ✓ Closing fragment
08-21 13:05 20m 0 / - UA3IDQ - / -8 2 ✓ Closing fragment
08-21 12:59 20m -10 / - UB3XCA - / -1 2 ✓ Closing fragment
08-21 12:57 20m -12 / - JH8SIT - / - 5 ✓ Closing fragment
08-21 12:53 20m -13 / - LU9ET - / - 6 Partial capture
08-21 10:51 20m -11 / - R2BMP - / -21 2 Partial capture
08-21 10:44 20m -8 / -14 R3BEE -14 / -4 4 ✓ Full exchange observed
08-21 10:39 20m -10 / - R3YCJ - / -7 3 Partial capture
08-21 10:37 20m -8 / - UA3IDQ - / - 3 Partial capture
08-20 18:44 80m -13 / - R1ZH - / - 3 Partial capture
08-20 18:40 40m - / - OV5SP -17 / - 5 Partial capture
08-20 18:38 40m -1 / +1 R3BIS -12 / +4 5 ✓ Full exchange observed
08-20 18:33 40m -6 / - BG5JGG - / -17 2 ✓ Closing fragment
08-20 18:30 40m -5 / -7 RK3AW -15 / +3 3 ✓ Full exchange observed
08-20 18:28 40m - / -15 9A6NCC 0 / - 3 ✓ Closing fragment
08-20 18:23 40m -9 / - R0SV/P - / -19 2 ✓ Closing fragment
08-20 18:20 40m -8 / -1 US1EA -8 / - 5 ✓ Closing observed
08-20 18:18 40m -7 / -5 DB3MAX -1 / -16 6 ✓ Full exchange observed
08-20 18:13 40m -9 / - R1IV - / - 8 Partial capture
08-20 18:10 40m -4 / - R6ZCE - / +2 2 Partial capture
08-20 18:01 20m -7 / -17 TA2ED -8 / -22 2 Partial capture
08-20 17:51 20m -2 / - OY5T - / - 5 Partial capture
08-20 16:35 40m -11 / +10 UB3PET -5 / -3 6 ✓ Full exchange observed
08-20 16:28 40m - / - RW3XB -12 / - 3 ✓ Closing fragment
08-20 16:27 40m - / -1 UB4FGK -9 / - 6 ✓ Closing fragment
08-20 15:38 40m -14 / -7 RU4AJ -6 / +4 5 ✓ Full exchange observed
08-20 15:35 40m -14 / - BA7IWL - / -17 4 Partial capture
08-20 15:28 40m -15 / - R1BRZ - / -12 3 ✓ Closing fragment
08-20 15:22 40m -14 / +8 RO5A -10 / +6 4 ✓ Full exchange observed
08-20 15:21 40m -14 / - BG7BVI - / -15 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
181615  +5 2589  RX4SA HB9FGO -18
181630 -11 1928  HB9FGO RX4SA R-13
181645  +6 2589  RX4SA HB9FGO RR73
182345  -8 1929  UA1ABJ RX4SA LO36
182445 -12 1929  CQ RX4SA LO36 (x5)
182700  +2 2440  RX4SA R1IO LP82
182715  -9 1928  R1IO RX4SA +17
182730  +2 2439  RX4SA R1IO R-01 (x3)
182830  -1  706  RX4SA G0OYQ IO93
20m 
UTC    dB Audio  Message
125930  -7 1762  UB3XCA RX4SA R-01 (x2)
130030 -11 1762  JH8SIT RX4SA LO36 (x3)
130515  +3 1762  UA3IDQ RX4SA R-08 (x2)
133915  -4 1762  CQ RX4SA LO36 (x2)
134015  -3 1762  RU0AOO RX4SA R+07
134230 -13 1974  RX4SA RU0AOO RR73
162815  -4 1763  UB0SMX/P RX4SA R-04
163430 -13 1763  EY7BP RX4SA LO36 (x3)
80m 
UTC    dB Audio  Message
185630  -7  857  RX4SA R2SN -08
185645  -3 2492  CQ RX4SA LO36
185815  -7 2492  R2SN RX4SA R+04
185945 -11 2491  CQ RX4SA LO36                         a1 (x2)
190115 -13 2491  RQ3D RX4SA -20
190215  -9 2492  CQ RX4SA LO36 (x2)
190730 +11 2492  RX4SA DO2TO JO72
190830  +6 1067  RX4SA YT3BL JN95
190945  -7 2492  CQ RX4SA LO36 (x2)
184445 -12 2301  R1ZH RX4SA LO36 (x3)
10m 
UTC    dB Audio  Message
074115  +4  490  RX4SA IK4LZH R-13 (x2)
143745 -20 1659  RX4SA RT6O -13 (x2)
062330 -14 2068  RX4SA UA3WG KO71 (x3)
062830  +3  322  RX4SA RA6OY KN88 (x3)
120745 -10 1383  RX4SA LZ2IP -22 (x5)

Decoder S/N history by band

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