R4FCJ — 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: LO33

Receiver-side FT8 activity involving R4FCJ, decoded by SO8OO in southeastern Poland. 104 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-18 and 2026-11-03.

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 104 FT8 messages attributed to R4FCJ as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (66%), followed by 160 m (23%) and 40 m (11%). Several six-hour UTC windows tied for the largest share (62%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

104
Messages attributed
5
UTC dates decoded
14
Active 15-min windows
-11 dB
Estimated median S/N

Bands

160m · 24 80m · 69 40m · 11
First attributed message: 2026-06-18
Last attributed message: 2026-11-03 04:16 UTC

Observed FT8 message patterns

Attributed sample
104 messages
Active dates
5 UTC dates
Estimated median S/N
-11 dB
Estimated 10th-90th percentile
-21 to +3 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 29, moderate (-15 to -9 dB) 31, strong (≥ -8 dB) 44.

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 R4FCJ 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 R4FCJ

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
LO33 · 40 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,771 km (approx.)
Last such locator decoded
2026-10-12 18:58 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 UTCBandR4FCJ S/NCounterpartCounterpart S/NMsgsCapture
11-03 04:20 80m - / -11 OK2CNI 0 / - 14 Partial capture
11-03 04:16 80m -7 / - TA1MB -23 / - 2 ✓ Closing observed
11-03 04:12 80m - / -4 TA1MB -23 / - 2 Partial capture
11-03 04:00 160m -22 / - OH5BM - / -17 2 Partial capture
10-27 17:47 80m - / - RA5AK 0 / - 2 Partial capture
10-27 17:05 80m - / - RA4NCC -4 / - 2 Partial capture
10-27 17:05 80m - / -14 RA3ZDU +1 / - 4 ✓ Closing fragment
10-27 17:04 80m - / - RT7N -16 / - 2 ✓ Closing fragment
10-12 18:59 40m -12 / - BH3HAO - / -12 2 ✓ Closing fragment
10-12 18:59 40m - / - F1IQH -4 / - 2 Partial capture
10-12 18:58 40m -12 / - VU3OSA - / -20 3 ✓ Closing fragment
09-25 02:32 80m - / -6 UA4POO 0 / - 2 Partial capture
09-25 02:31 80m - / - DO1OAS +2 / - 11 Partial capture
09-25 02:28 80m +8 / +1 RN4SN -3 / -25 5 ✓ Full exchange observed
09-25 02:28 80m - / - DO1OAS +5 / - 3 Partial capture
09-25 02:28 80m 0 / 0 RA3M +1 / -12 7 ✓ Full exchange observed
09-25 02:27 80m - / - R7CD +11 / - 3 Partial capture
09-25 02:26 80m - / - YO3GNF -5 / - 4 Partial capture
09-25 02:26 80m +10 / +3 R5AV +8 / -17 5 ✓ Full exchange observed
09-25 02:24 80m +6 / -8 S57TW +4 / -16 4 ✓ Full exchange observed
09-25 02:23 160m - / - LA9JKA -15 / - 4 Partial capture
09-25 02:22 160m - / - DL9KM -15 / - 6 Partial capture
09-25 02:17 160m 0 / -7 LX2A +10 / -16 7 ✓ Full exchange observed
09-25 02:15 160m -2 / - RW3VA -16 / -18 3 ✓ Closing observed
09-25 02:14 160m -3 / - LY3BRA - / -23 3 Partial capture
09-25 02:13 160m -4 / - LX2A - / -23 2 Partial capture
09-25 02:11 160m - / - F5RRS -14 / - 3 Partial capture
09-25 02:11 160m - / - SV8JNR -16 / - 2 Partial capture
09-25 02:07 160m -1 / - LY3BRA - / -19 5 Partial capture

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
042015  +1 2570  R4FCJ IQ4JO JN63
042045  +0 3030  R4FCJ OK2CNI JN79 (x4)
042215  +4 1122  R4FCJ DO1OAS JO51
042245  +5 3030  R4FCJ OK2CNI JN79 (x9)
160m 
UTC    dB Audio  Message
022145  -3 1696  CQ R4FCJ LO33
022230 -21 1912  R4FCJ DL9KM JN68 (x2)
022330 -16 1653  R4FCJ LA9JKA JP32
022330 -14 1912  R4FCJ DL9KM JN68
022400 -13 1653  R4FCJ LA9JKA JP32
022400 -12 1912  R4FCJ DL9KM JN68
022430 -11 1653  R4FCJ LA9JKA JP32
022430 -11 1912  R4FCJ DL9KM JN68
022500 -19 1653  R4FCJ LA9JKA JP32
022500 -12 1912  R4FCJ DL9KM JN68
040000 -23 2002  OH5BM R4FCJ -17 (x2)
040630  +9 1537  R4FCJ OH5BM R-12 (x2)
40m 
UTC    dB Audio  Message
182345  -6 1323  CQ R4FCJ LO33
182500 -16 1323  R4FCJ DG3DAF JO41
182600  -2  598  R4FCJ DK8HC JO42
185715 -10 1202  R1BDX R4FCJ LO33
185745 -16 1201  CQ R4FCJ LO33 (x2)
185845 -18 1201  VU3OSA R4FCJ LO33
185900  -1 1202  R4FCJ F1IQH JN27 (x2)
185945  -9 1202  BH3HAO R4FCJ R-12
190015  -7 1201  VU3OSA R4FCJ R-20 (x2)
190145 -16 1202  BH3HAO R4FCJ 73
190245 -13 1202  EA1IOK R4FCJ -15
054745 -13 2245  R4FCJ RN2F KO04

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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