UA4NX — 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 UA4NX, decoded by SO8OO in southeastern Poland. 211 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 19 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-08-15.

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 211 FT8 messages attributed to UA4NX as the transmitting token by decoded message structure across 19 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (81%), followed by 40 m (16%) and 10 m (2%). Most decodes (52%) fell within the six-hour window 14:00-20:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (62%); the estimated median was -6 dB.

Overview

211
Messages attributed
19
UTC dates decoded
58
Active 15-min windows
-6 dB
Estimated median S/N

Bands

80m · 2 40m · 34 20m · 171 10m · 4
First attributed message: 2026-06-06
Last attributed message: 2026-08-15 07:43 UTC

Observed FT8 message patterns

Attributed sample
211 messages
Active dates
19 UTC dates
Estimated median S/N
-6 dB
Estimated 10th-90th percentile
-15 to +7 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 20, moderate (-15 to -9 dB) 61, strong (≥ -8 dB) 130.

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 UA4NX 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 UA4NX

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 · 54 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,989 km (approx.)
Last such locator decoded
2026-08-15 05:41 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 UTCBandUA4NX S/NCounterpartCounterpart S/NMsgsCapture
08-15 07:43 20m -22 / -6 R6BH -18 / -4 2 Partial capture
08-15 07:40 20m -19 / -12 R50RKZ -3 / -13 4 Partial capture
08-15 05:35 20m -7 / - RJ6ON - / - 4 Partial capture
07-27 03:33 20m -14 / - RA9SOZ - / -10 2 Partial capture
07-27 03:29 20m -6 / - UB6OCD - / -7 3 Partial capture
07-24 03:12 40m - / -3 RA4FW -16 / - 2 ✓ Closing fragment
07-20 04:16 20m - / -5 R6OEY -24 / - 2 ✓ Closing fragment
07-19 18:16 80m - / -5 RW6MD -11 / - 2 Partial capture
07-19 06:36 10m - / -6 RW2Z -12 / - 2 ✓ Closing fragment
07-19 06:06 10m - / -4 EA3ADX -8 / - 3 Partial capture
07-19 05:36 10m - / -14 RV6AJJ -11 / - 2 ✓ Closing fragment
07-19 05:18 10m - / +3 RA3QTT -6 / - 2 ✓ Closing fragment
07-18 08:03 10m - / -9 RV3DCM -22 / - 3 ✓ Closing fragment
07-18 07:29 10m - / - R3EDI -22 / - 2 ✓ Closing fragment
07-18 07:19 10m - / -6 RD6OX -4 / - 2 ✓ Closing fragment
07-18 07:00 10m - / -10 RN6MA -4 / - 2 ✓ Closing fragment
07-18 06:50 10m - / -14 IU8ADS +6 / - 3 ✓ Closing fragment
07-18 06:45 10m - / -4 RA6AR -10 / - 3 ✓ Closing fragment
07-18 06:08 20m - / +2 R4GM -12 / - 2 ✓ Closing fragment
07-18 02:42 20m - / - RA3LBK -14 / - 2 ✓ Closing fragment
07-16 19:56 40m -17 / - JA5XAE - / -18 2 Partial capture
07-16 19:51 40m -18 / - UB8QCA - / - 3 Partial capture
07-16 19:46 40m -17 / -4 RV6AWH -20 / -18 4 ✓ Full exchange observed
07-16 19:42 40m -16 / +7 R9AE -12 / - 4 ✓ Closing observed
07-16 19:35 40m -18 / - UB8QCA - / - 2 Partial capture
07-16 19:12 40m - / -14 RW4HBG -9 / - 2 ✓ Closing fragment
07-14 03:47 20m - / -11 HC2GRC -7 / - 3 Partial capture
07-12 17:58 10m - / -7 RD7O -22 / - 2 ✓ Closing fragment
07-12 17:56 10m - / -8 RL6LP -4 / - 2 ✓ Closing fragment
07-12 06:10 20m -11 / - RL6ZZ - / -17 3 ✓ Closing fragment
07-11 18:01 40m -23 / - <...> - / 0 2 Partial capture
07-09 02:11 20m - / -14 WP4U -16 / - 2 ✓ Closing fragment
07-08 18:06 40m - / -4 RW6MZ -12 / - 2 ✓ Closing fragment
07-06 18:50 20m -12 / -6 RC6OT -13 / 0 3 ✓ Full exchange observed
07-06 18:32 40m - / -4 RN3ZBX -6 / - 2 Partial capture
07-06 04:31 20m - / -4 UI6L -16 / - 2 ✓ Closing fragment
07-05 06:38 20m - / - EA3IDY -10 / - 2 Partial capture
07-05 06:37 20m - / - R3PLA -12 / - 4 Partial capture
07-04 12:37 20m - / -6 R6OQ -8 / - 2 ✓ Closing fragment
07-03 04:11 20m -7 / - <...> - / -18 3 Partial capture
07-02 18:33 40m - / -1 UA3LEO -5 / - 3 ✓ Closing fragment
06-30 18:32 40m - / -5 UA3IHJ -4 / - 2 Partial capture
06-30 18:27 40m - / -2 UB3YGA -8 / - 2 ✓ Closing fragment
06-30 18:24 40m - / +9 RU4HU -11 / - 2 ✓ Closing fragment
06-29 04:18 20m - / -2 UA3RAU -2 / - 2 ✓ Closing fragment
06-28 14:06 20m - / -2 UA9SHH -10 / - 2 Partial capture
06-28 13:55 20m -14 / - RA4P/P - / -8 4 ✓ Closing fragment
06-28 10:46 10m - / -15 RW6HDK -6 / - 2 ✓ Closing fragment
06-28 07:58 10m - / -1 RT3K -8 / - 2 ✓ Closing fragment
06-28 07:32 10m - / -10 R1WBJ 0 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
033300 -14 1254  RA9SOZ UA4NX -10 (x2)
053515 -11 2575  RJ6ON UA4NX LO48 (x4)
053930  -9 2574  UA9KBP UA4NX LO48
054130  -5 2480  RV0AAE UA4NX LO48
073900  -7 2393  UA4NX RT4A/P R-14
074015 -18 2181  R50RKZ UA4NX -13
074030  -3 2181  UA4NX R50RKZ R-12
074045 -20 2180  R50RKZ UA4NX -13
074100  -3 2181  UA4NX R50RKZ R-20
074330 -22 1914  R6BH UA4NX -04
074345 -18 1913  UA4NX R6BH R-06
40m 
UTC    dB Audio  Message
194215 -15 2394  R9AE UA4NX LO48 (x2)
194430 -15 1843  UA4NX R9AE +07 (x2)
194645 -17 2394  RV6AWH UA4NX -18
194800 -19 1620  UA4NX RV6AWH R-04 (x3)
195100 -17 2394  UB8QCA UA4NX LO48 (x3)
195630 -16 2394  JA5XAE UA4NX -18 (x2)
031245 -18 2092  UA4NX RA4FW R-03 (x2)
80m 
UTC    dB Audio  Message
191600 -21 1518  RY3T UA4NX LO48 (x2)
181600 -12 1830  UA4NX RW6MD -05 (x2)
10m 
UTC    dB Audio  Message
051815  -5 1147  UA4NX RA3QTT R+03 (x2)
052215 -19 1642  UA4NX RA9ACA 73
052345  -2 2406  UA4NX R2ZC RR73
052445 -17 1186  UA4NX RC7LX -15
052545 -16  894  UA4NX RW9WJ LO84
053600 -11 1020  UA4NX RV6AJJ R-14 (x2)
060100  -9 1229  UA4NX R3QX 73
060600 -10 1304  UA4NX EA3ADX -04 (x3)
063600  -8 1078  UA4NX RW2Z R-06 (x2)
074445 -18 1822  UA4NX R6ZI R-04

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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