R4WH — 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: LO66

Receiver-side FT8 activity involving R4WH, decoded by SO8OO in southeastern Poland. 8 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-08-25 and 2026-08-29.

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 FT8 messages attributed to R4WH as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (63%), followed by 40 m (38%). In this small sample, the estimated median decoder S/N was -11 dB; no usual signal pattern is inferred.

Overview

8
Messages attributed
4
UTC dates decoded
6
Active 15-min windows
-11 dB
Estimated median S/N

Bands

40m · 3 20m · 5
First attributed message: 2026-08-25
Last attributed message: 2026-08-29 15:36 UTC

Observed FT8 message patterns

Attributed sample
8 messages
Active dates
4 UTC dates
Estimated median S/N
-11 dB
S/N percentile sample
Too small
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 5, strong (≥ -8 dB) 3.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with R4WH 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 R4WH

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
LO66 · 7 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
2,180 km (approx.)
Last such locator decoded
2026-08-29 15:36 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 UTCBandR4WH S/NCounterpartCounterpart S/NMsgsCapture
10-20 07:19 10m - / -15 JH3CUL -14 / - 3 ✓ Closing fragment
10-13 17:18 40m - / - DH5BM +8 / - 7 Partial capture
10-13 17:18 40m - / -7 DK7ZT +3 / - 4 Partial capture
10-13 17:12 40m - / -19 UB6OFG +2 / - 3 ✓ Closing fragment
10-13 17:11 40m - / -1 R7CD -2 / - 3 ✓ Closing fragment
10-13 16:57 40m - / -16 DK7ZT +5 / - 3 Partial capture
10-13 16:56 40m - / -14 HA7TM -9 / - 2 ✓ Closing fragment
09-14 17:09 40m - / -10 R70SAB +17 / - 2 ✓ Closing fragment
09-13 17:58 40m - / -15 UC6D +17 / - 2 ✓ Closing fragment
09-10 17:17 40m - / -14 DK7ZT -4 / - 3 Partial capture
08-29 15:36 20m -2 / - JA8CJY - / - 2 Partial capture
08-29 10:14 20m - / -7 R9UBE -10 / - 2 Partial capture
08-29 10:02 20m -12 / -9 DH5BM +9 / - 11 ✓ Closing observed
08-28 15:45 40m - / -1 RW3QU -2 / - 2 ✓ Closing fragment
08-27 15:51 40m - / -17 RO3ZR -10 / - 4 ✓ Closing fragment
08-25 19:30 40m - / - DL6EL +2 / - 3 Partial capture
08-25 19:20 40m - / -15 DB2HA +12 / - 4 ✓ Closing fragment
08-25 07:10 20m - / -11 R5KH -11 / - 3 ✓ Closing fragment
08-25 07:09 20m - / -16 DL1R -5 / - 5 ✓ Closing fragment
08-24 19:12 40m - / -16 R3DBX -6 / - 2 ✓ Closing fragment
08-24 08:49 20m - / -11 RA6LTD -6 / - 2 ✓ Closing fragment
08-22 16:37 40m - / -2 UA3DPM -5 / - 4 Partial capture
08-19 09:43 20m - / - IU5HIU -11 / - 3 Partial capture
08-16 15:27 40m - / -16 RN3ZBX -10 / - 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

10m 
UTC    dB Audio  Message
071945 -15 2240  R4WH JH3CUL -15 (x3)
40m 
UTC    dB Audio  Message
171215  -5  777  R4WH R7CD 73
171245  +0 2705  R4WH UB6OFG R-19 (x2)
171815  +3 2488  R4WH DK7ZT -07
171815 +11 2979  R4WH DH5BM JO41
171845  +2 2489  R4WH DK7ZT -07
171845 +10 2979  R4WH DH5BM JO41
171915  +4 2488  R4WH DK7ZT -07
171915  +8 2979  R4WH DH5BM JO41
171945  +3 2488  R4WH DK7ZT -07
171945  +8 2979  R4WH DH5BM JO41 (x4)
172215 +15 2979  R4WH OH3MB RR73
20m 
UTC    dB Audio  Message
100200 +12 2956  R4WH DH5BM JO41 (x9)
100715 -12 2957  DH5BM R4WH RR73
100730  +6 2956  R4WH DH5BM 73
101430  -8  690  R4WH R9UBE NO35 (x2)
153600  -5 3006  JA8CJY R4WH LO66 (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.

Explore CW reception at SO8OO

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