UR3HC — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Ukraine Most frequent locator attributed to this token: KN69

Receiver-side FT8 activity involving UR3HC, decoded by SO8OO in southeastern Poland. 1,282 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 58 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-03.

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 1,282 FT8 messages attributed to UR3HC as the transmitting token by decoded message structure across 58 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (66%), followed by 40 m (19%) and 10 m (9%). The busiest six-hour window was 16:00-22:00 UTC, containing 48% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (65%); the estimated median was -5 dB.

Overview

1,282
Messages attributed
58
UTC dates decoded
210
Active 15-min windows
-5 dB
Estimated median S/N

Bands

80m · 78 40m · 243 20m · 845 10m · 116
First attributed message: 2026-06-06
Last attributed message: 2026-09-03 03:26 UTC

Observed FT8 message patterns

Attributed sample
1,282 messages
Active dates
58 UTC dates
Estimated median S/N
-5 dB
Estimated 10th-90th percentile
-16 to +7 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 130, moderate (-15 to -9 dB) 322, strong (≥ -8 dB) 830.

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 UR3HC 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 UR3HC

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
KN69 · 383 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
807 km (approx.)
Last such locator decoded
2026-09-03 03:26 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 UTCBandUR3HC S/NCounterpartCounterpart S/NMsgsCapture
09-03 03:57 40m - / -26 RX3ASQ -11 / - 25 Partial capture
09-03 03:19 40m - / -26 RX3ASQ -10 / - 58 Partial capture
09-03 03:17 40m -12 / - K4JPD - / - 2 Partial capture
09-03 03:15 40m -12 / - KY2J - / - 2 Partial capture
09-03 03:14 40m -20 / - VA2EHQ -10 / -5 2 ✓ Closing observed
09-02 18:30 80m -12 / -10 UR5WBO -2 / -5 3 ✓ Full exchange observed
09-02 02:17 40m -12 / - K8ATL - / -7 6 Partial capture
09-02 02:09 40m -3 / - W6YX - / -13 6 Partial capture
08-31 20:45 40m +2 / - VJ6X - / -5 2 ✓ Closing fragment
08-30 01:31 80m +6 / -6 M6OTN -10 / -10 4 Partial capture
08-30 01:30 80m +3 / -3 9A4V +12 / - 3 ✓ Closing observed
08-30 01:28 80m +5 / - G4DML - / -5 3 Partial capture
08-29 19:33 80m -4 / - VK4XK - / -1 7 ✓ Closing fragment
08-29 19:29 80m +7 / - ON4APU - / -13 2 Partial capture
08-29 19:14 80m +2 / -1 OZ1PFH +2 / -7 7 ✓ Full exchange observed
08-29 17:55 20m -7 / - HB9UQF - / -15 3 ✓ Closing fragment
08-29 15:59 20m - / -23 BG7BVI -9 / - 3 ✓ Closing fragment
08-29 03:32 40m -3 / - N2PPP - / -9 3 Partial capture
08-29 03:29 40m +2 / - W5DOO - / -14 2 Partial capture
08-29 03:26 40m -7 / - AA1HR - / -8 3 ✓ Closing fragment
08-28 18:02 20m -4 / - BG0FQU - / -18 4 Partial capture
08-28 17:44 20m -20 / - DA1MJ - / -10 2 Partial capture
08-28 05:26 20m -10 / - TA2CD -19 / -5 2 Partial capture
08-28 04:24 20m - / - F4HQL -8 / - 2 Partial capture
08-28 02:50 80m -4 / - WA6VZN - / -13 6 Partial capture
08-27 19:57 80m - / -10 ES0MVM +5 / - 2 ✓ Closing fragment
08-27 02:10 40m - / -19 KT4MC -14 / - 3 ✓ Closing fragment
08-27 02:07 40m - / - UA9SY -11 / - 3 Partial capture
08-27 02:05 40m - / -5 EC5M -7 / - 3 ✓ Closing fragment
08-27 01:53 40m - / -11 RC9WC -22 / - 2 Partial capture
08-26 04:09 20m - / -4 5Z4VJ -10 / - 2 Partial capture
08-22 19:37 20m -8 / - PD0JSB - / -11 3 ✓ Closing fragment
08-22 19:34 20m -6 / - DB4LBS - / -12 2 ✓ Closing fragment
08-22 19:31 20m -17 / - PB7TT -18 / -11 4 ✓ Closing observed
08-22 19:30 20m -8 / - PD0RCQ -14 / -7 4 ✓ Closing observed
08-22 19:27 20m -10 / - BG7ZHS - / -13 4 ✓ Closing fragment
08-22 18:49 20m - / - UR5HAN +2 / - 2 Partial capture
08-22 18:46 20m +2 / - TA3NK - / -2 2 ✓ Closing fragment
08-22 18:42 20m +6 / - HB9GVO - / -6 2 Partial capture
08-22 18:40 20m +10 / -7 CT1BFP -8 / -9 9 ✓ Full exchange observed
08-21 20:28 20m -5 / +10 OE8PIT +7 / -14 5 ✓ Full exchange observed
08-21 20:25 20m -3 / - TK4VXL -15 / 0 3 ✓ Closing observed
08-21 20:23 20m - / -9 MM9ODX -6 / - 2 ✓ Closing fragment
08-20 19:54 20m - / - DG5PW -4 / - 2 Partial capture
08-20 19:52 20m - / -6 RN6MA +18 / - 4 Partial capture
08-20 19:40 20m - / -6 DB2HA -6 / - 4 ✓ Closing fragment
08-20 19:10 20m - / -1 DK4LK +4 / - 3 ✓ Closing fragment
08-20 18:58 20m - / -6 EI9IB -8 / - 2 ✓ Closing fragment
08-20 18:57 20m - / - DL1OH -10 / - 2 Partial capture
08-20 18:57 20m - / - DL9MY +3 / - 3 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
040230  -5 1181  UR3HC RX3ASQ R-26 (x15)
80m 
UTC    dB Audio  Message
012845  +4 1793  G4DML UR3HC -05 (x2)
013000 +11 1612  UR3HC 9A4V R-03
013015  +3 1792  9A4V UR3HC RR73
013030 +13 1612  UR3HC 9A4V 73
013115  +6 1792  M6OTN UR3HC -10 (x3)
013330 -10 1793  UR3HC M6OTN R-06
183030  -6 1454  UR3HC UR5WBO -10
183045 -12  952  UR5WBO UR3HC R-05
183100  +3 1454  UR3HC UR5WBO RR73
185415 -11 1066  RI1FJL UR3HC KN69
190515 -14 1105  <...> UR3HC KN69 (x2)
20m 
UTC    dB Audio  Message
180215  -8 2024  BG0FQU UR3HC -18 (x4)
155930  -8 2040  UR3HC BG7BVI OL66 (x3)
161330  -5 2804  UR3HC UA0LQE PN53
175500 -10 2622  HB9UQF UR3HC -15 (x3)
175845 -12 2622  G0HVR UR3HC -07 (x2)
190130  -2 2543  UR3HC IU4PTA RR73
190330 -16  630  UR3HC LB5AK JO59
10m 
UTC    dB Audio  Message
183615 -18 1118  PR7KY UR3HC -12
184915 -15 1047  SP6FME UR3HC -05
185330 -15 1068  OZ1GC UR3HC -12 (x2)
185545 -17 1062  SK3W UR3HC -08 (x3)
185830 -12 1058  OZ2CDJ UR3HC RR73
185900  -9 1058  CR5VP UR3HC -05 (x2)
190000 -18 1057  CQ UR3HC KN69                         a1
190030 -17 1057  F4NLW/P UR3HC -06
190130 -18 1057  IQ4JO UR3HC +03
190200 -16 1057  EC5M UR3HC -05 (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.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee