UA4NCX — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: LO48

Receiver-side FT8 activity involving UA4NCX, decoded by SO8OO in southeastern Poland. 930 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 73 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-04.

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 930 FT8 messages attributed to UA4NCX as the transmitting token by decoded message structure across 73 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (89%), followed by 40 m (10%) and 20 m (1%). Most decodes (98%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -16.4 dB.

Overview

930
Messages attributed
73
UTC dates decoded
211
Active 15-min windows
-16.4 dB
Estimated median S/N

Bands

80m · 828 40m · 91 20m · 11
First attributed message: 2026-06-06
Last attributed message: 2026-10-04 20:19 UTC

Observed FT8 message patterns

Attributed sample
930 messages
Active dates
73 UTC dates
Estimated median S/N
-16.4 dB
Estimated 10th-90th percentile
-24 to -9 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 519, moderate (-15 to -9 dB) 341, strong (≥ -8 dB) 70.

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 UA4NCX 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 UA4NCX

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
LO48 · 629 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,989 km (approx.)
Last such locator decoded
2026-10-04 20:19 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 UTCBandUA4NCX S/NCounterpartCounterpart S/NMsgsCapture
10-04 20:19 80m -10 / -5 UA1TAT +2 / - 3 ✓ Closing observed
10-04 19:11 80m - / -11 RU6K +2 / - 2 Partial capture
10-04 19:08 80m -20 / - UA4AGU - / -10 3 ✓ Closing fragment
10-02 17:48 80m -22 / - R9WJ - / -6 3 ✓ Closing fragment
10-02 17:36 80m -16 / - R1BQC -6 / - 2 ✓ Closing observed
10-02 17:30 80m -14 / -20 RQ3D -18 / -15 5 ✓ Full exchange observed
10-02 17:29 80m -10 / - R1BQC - / - 2 Partial capture
10-02 17:24 80m -19 / - R4HNW - / -3 3 ✓ Closing fragment
10-02 17:23 80m -22 / - R2AL - / - 2 Partial capture
10-01 17:19 80m - / - RA6ZS -6 / - 2 Partial capture
10-01 16:54 80m -21 / +9 R2DAW -7 / - 5 ✓ Closing observed
10-01 16:51 80m -22 / - UA4HBR -13 / -8 6 ✓ Full exchange observed
10-01 16:49 80m - / - DM2CNE +6 / - 3 Partial capture
10-01 16:44 80m -21 / -9 UN0GY -16 / -15 4 ✓ Full exchange observed
10-01 16:38 80m -18 / +2 SM5A -16 / -3 5 ✓ Full exchange observed
10-01 16:38 80m - / -24 RU6K -3 / - 8 ✓ Closing fragment
09-30 17:55 80m -15 / -11 R3ZG -10 / -10 4 ✓ Full exchange observed
09-30 17:52 80m -17 / - RK4FD - / - 2 Partial capture
09-30 17:45 80m -15 / +9 UA4UK -23 / -4 6 ✓ Full exchange observed
09-30 17:42 80m -11 / - RU4SS - / - 4 Partial capture
09-30 17:40 80m - / - RA3PS -19 / - 3 Partial capture
09-30 15:48 80m -18 / - R4PIN - / -6 3 ✓ Closing fragment
09-30 15:43 80m -21 / - RA4HEV - / - 2 Partial capture
09-30 15:36 80m -20 / - UA3YGP -2 / -13 4 ✓ Closing observed
09-29 19:03 40m -24 / -9 R7OF -6 / - 3 ✓ Closing observed
09-28 16:56 40m - / -11 RD7O -8 / - 2 ✓ Closing fragment
09-25 19:32 80m - / - R3BCK -8 / - 2 Partial capture
09-24 18:28 80m - / -10 RA1TAR -16 / - 2 ✓ Closing fragment
09-24 18:20 80m - / -13 RN3QQT -4 / - 2 ✓ Closing fragment
09-24 18:20 80m - / -6 R6ZB -18 / - 2 Partial capture
09-23 16:20 80m - / - SM3ULU -6 / - 3 Partial capture
09-23 16:16 80m -14 / -5 EV1R +14 / -16 5 ✓ Full exchange observed
09-23 16:15 80m -13 / - R4CGS - / -12 2 ✓ Closing fragment
09-23 16:13 80m -12 / - RA5AD - / - 2 ✓ Closing fragment
09-23 16:06 80m - / - SM3ULU -16 / - 3 Partial capture
09-22 17:12 80m - / - R9FEM -16 / - 2 ✓ Closing fragment
09-22 16:22 80m - / -11 R4NAN +4 / - 2 ✓ Closing fragment
09-22 16:18 80m - / - YO9IJP +14 / - 2 Partial capture
09-22 16:13 80m - / -13 RZ6ALZ -4 / - 4 ✓ Closing fragment
09-21 18:47 80m -13 / -13 SN40KZE -1 / -13 3 Partial capture
09-21 18:38 80m -11 / - RA3ZOM - / -8 4 ✓ Closing fragment
09-20 14:24 40m - / -1 RU6K +5 / - 3 Partial capture
09-20 14:12 40m - / -6 EU1AFX -12 / - 4 Partial capture
09-20 14:03 40m - / -3 R7LA -8 / - 3 ✓ Closing fragment
09-18 16:38 80m - / -12 RC1TF -6 / - 2 ✓ Closing fragment
09-18 16:36 80m - / -12 UN7LAN -20 / - 2 ✓ Closing fragment
09-17 18:06 80m - / - DH9DR +8 / - 8 Partial capture
09-17 17:30 80m - / -12 R3GI -2 / - 2 ✓ Closing fragment
09-17 17:11 80m - / - 9A3TGT +8 / - 3 Partial capture
09-17 16:39 80m - / - R2DP -2 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
184830 -24 1360  CQ UA4NCX LO48                        a1
190845 -18 1249  UA4AGU UA4NCX LO48 (x3)
191100  +4 2683  UA4NCX RU6K -11
191100  -4 1248  UA4NCX DH0BRO JO62
191130  +0 2683  UA4NCX RU6K -11
200900 -10 1220  R2AL UA4NCX LO48
201030 -10 1255  CQ UA4NCX LO48 (x2)
201145  -4 1257  UA4NCX YO4NF RR73
201145  -9 1213  UA4NCX RA6FYL R-17
201945 -10 1255  UA1TAT UA4NCX LO48
202000  -1 1101  UA4NCX UA1TAT -05 (x2)
40m 
UTC    dB Audio  Message
141300 -15 1282  UA4NCX EU1AFX R-10 (x2)
141815 -19 2068  UA4NCX UB4CLH RR73
142445  +4 2824  UA4NCX RU6K -01 (x3)
161615  +2 1886  UA4NCX LZ936BA -02
162100  +4 1826  UA4NCX SQ100PKP -07
165600 -11 2378  UA4NCX RD7O -11 (x2)
183730 -19 1776  HB9ELE UA4NCX LO48
185945 -13 1627  UA4NCX R2BJZ RR73
190315 -24 1868  R7OF UA4NCX LO48
190330  -4 2173  UA4NCX R7OF -09 (x2)
20m 
UTC    dB Audio  Message
114315  +2 2481  UA4NCX IQ4JO R-16 (x2)
114545 -22 1693  UA4NCX ON4AOI -11
151130  -1 1504  UA4NCX R6LQU KN97 (x2)
152700 -12 1824  UA4NCX BH4ECL PM01
174130 -11 1503  UA4NCX R7OV KN87 (x3)
160115  -6  720  UA4NCX F4HTA -10
160845  -2 2215  UA4NCX IQ4JO JN63 (x3)
161115  +1 1061  UA4NCX RU6FK -11 (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.

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