RA2FU — 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: Kaliningrad Most frequent locator attributed to this token: KO04

Receiver-side FT8 activity involving RA2FU, decoded by SO8OO in southeastern Poland. 8,712 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 112 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-22.

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 8,712 FT8 messages attributed to RA2FU as the transmitting token by decoded message structure across 112 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (98%), followed by 40 m (1%) and 20 m (1%). Most decodes (99%) fell within the six-hour window 15:00-21:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (74%); the estimated median was -4.5 dB.

Overview

8,712
Messages attributed
112
UTC dates decoded
612
Active 15-min windows
-4.5 dB
Estimated median S/N

Bands

80m · 8,521 40m · 122 20m · 69
First attributed message: 2026-06-06
Last attributed message: 2026-10-22 19:09 UTC

Observed FT8 message patterns

Attributed sample
8,712 messages
Active dates
112 UTC dates
Estimated median S/N
-4.5 dB
Estimated 10th-90th percentile
-13 to +4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 401, moderate (-15 to -9 dB) 1,878, strong (≥ -8 dB) 6,433.

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 RA2FU 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 RA2FU

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
KO04 · 3,825 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
510 km (approx.)
Last such locator decoded
2026-10-22 19:09 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 UTCBandRA2FU S/NCounterpartCounterpart S/NMsgsCapture
10-22 19:11 80m - / - DO5AX -13 / - 3 Partial capture
10-22 19:06 80m -1 / -7 S50PV -13 / -14 4 Partial capture
10-22 19:03 80m -1 / -13 DO2AY -1 / -25 9 ✓ Full exchange observed
10-22 19:00 80m +2 / - OZ1BM - / -2 3 ✓ Closing fragment
10-22 18:58 80m +1 / - HB3YPJ - / -19 3 Partial capture
10-22 18:56 80m +1 / - RA5AD - / -2 4 Partial capture
10-22 18:54 80m +2 / +4 DF5AU +14 / +5 6 ✓ Full exchange observed
10-22 18:51 80m +6 / - SP5ROM - / -8 3 ✓ Closing fragment
10-22 18:49 80m - / - DC6NS -5 / - 6 Partial capture
10-22 18:49 80m +3 / -17 IZ1ANZ +2 / -17 6 ✓ Full exchange observed
10-22 18:46 80m +8 / - RA5AD - / -5 4 Partial capture
10-22 18:43 80m +8 / -21 RT3K -12 / -10 7 ✓ Full exchange observed
10-22 18:42 80m - / - DO2AY -8 / - 2 Partial capture
10-22 18:40 80m +1 / -3 DO6SHB +14 / -1 6 ✓ Full exchange observed
10-22 18:38 80m +7 / - RX3ASQ - / +4 3 Partial capture
10-22 18:35 80m +6 / -7 R5ZQ -5 / +1 6 ✓ Full exchange observed
10-22 18:30 80m - / - DO2AY -6 / - 11 Partial capture
10-22 18:29 80m +3 / - SQ5CZJ -8 / -4 4 ✓ Closing observed
10-22 18:29 80m +5 / -13 DL5MCW +8 / -2 4 ✓ Full exchange observed
10-22 18:20 80m - / - DF1GA -15 / - 2 Partial capture
10-22 18:15 80m +4 / -8 IK4ADE +14 / 0 6 ✓ Full exchange observed
10-22 18:11 80m +6 / - R2EA/P - / -8 4 ✓ Closing fragment
10-22 18:09 80m - / - DO5AX -12 / - 3 Partial capture
10-22 18:07 80m - / - DO2AY -3 / - 2 Partial capture
10-22 18:05 80m +5 / - DO5SMH -3 / -17 7 ✓ Closing observed
10-22 18:03 80m +7 / - SQ2RST +2 / -4 7 ✓ Full exchange observed
10-22 18:01 80m - / - DO2AY -4 / - 5 Partial capture
10-22 17:58 80m +3 / - RN3YN - / -14 3 Partial capture
10-22 17:55 80m +6 / - R2EA/P - / -5 4 Partial capture
10-22 17:51 80m +5 / - HB9IRN +4 / -18 4 ✓ Closing observed
10-22 17:49 80m +8 / - R2EN - / -22 3 ✓ Closing fragment
10-22 17:45 80m 0 / - E70SZ - / -20 2 Partial capture
10-22 17:42 80m +6 / - OH7KWX - / -9 3 ✓ Closing fragment
10-22 16:36 80m -1 / -16 G3SZG 0 / -18 3 ✓ Full exchange observed
10-22 16:33 80m +1 / -16 DH5MK +4 / -4 4 ✓ Full exchange observed
10-22 16:31 80m -1 / - E70SZ - / -17 3 Partial capture
10-22 16:28 80m -3 / -4 DO7WO -11 / - 5 ✓ Closing observed
10-22 16:27 80m -4 / - UN7EAN - / -16 3 ✓ Closing fragment
10-22 16:23 80m 0 / -4 DL7UAB +1 / +5 5 ✓ Full exchange observed
10-22 16:21 80m -2 / - R4GD - / -14 2 Partial capture
10-22 16:17 80m 0 / +3 R5DK +4 / +10 4 ✓ Full exchange observed
10-22 16:08 80m -6 / - UA9CMN - / -17 8 Partial capture
10-22 16:07 80m -2 / - UA6EU - / -12 2 Partial capture
10-22 15:59 80m -1 / - SM6VAG - / -5 2 Partial capture
10-21 19:42 80m -2 / - RN3YN - / -10 3 Partial capture
10-21 19:40 80m -6 / -17 I/KF0SPC -8 / -14 5 ✓ Full exchange observed
10-21 19:38 80m - / -2 R5DK +7 / - 3 Partial capture
10-21 19:36 80m -5 / -12 R7CD -4 / +5 5 ✓ Full exchange observed
10-21 19:35 80m -4 / -17 HG7PR -6 / -7 6 ✓ Full exchange observed
10-21 19:32 80m -2 / -5 R3HH +1 / -6 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
190530  +0  492  CQ RA2FU KO04
190545  +0  492  RA2FU DO2AY R-13
190600  -1  492  CQ RA2FU KO04
190615  +1  492  RA2FU DO2AY R-13
190630  -6  493  DO2AY RA2FU RRR
190645  -9 1212  RA2FU S50PV JN76
190645  -2  492  RA2FU DO2AY 73
190730  -1  492  S50PV RA2FU -14
190815 -15 1212  RA2FU S50PV R-07 (x2)
190900  +1  492  CQ RA2FU KO04
190930  -3  492  ON7PR RA2FU -22
191115 -13  627  RA2FU DO5AX JO52 (x3)
160m 
UTC    dB Audio  Message
192015  +2 2914  RA2FU RA3XDX KO85 (x3)
183130  +5 2527  RA2FU R1AP -12 (x4)
60m 
UTC    dB Audio  Message
063615 -21 1813  RA2FU DL5YEE JO42 (x3)
184015 -17  988  RA2FU DL9ATW JO61 (x3)
193500  -6  854  RA2FU M0RLC JO02 (x4)
182945  -4 1030  RA2FU SQ2NUH -14 (x3)
20m 
UTC    dB Audio  Message
144500  +3  729  RA2FU M9VVE R-15 (x15)

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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