HL5XL — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Republic of Korea Most frequent locator attributed to this token: PM37

Receiver-side FT8 activity involving HL5XL, decoded by SO8OO in southeastern Poland. 24 FT8 messages attributed to this token as transmitter, on 20m, across 1 UTC dates in the available aggregate history. Last observed 2026-08-28.

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 24 FT8 messages attributed to HL5XL as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was -12 dB; no usual signal pattern is inferred.

Overview

24
Messages attributed
1
UTC dates decoded
2
Active 15-min windows
-12 dB
Estimated median S/N

Bands

20m · 24
First attributed message: 2026-08-28
Last attributed message: 2026-08-28 14:25 UTC

Observed FT8 message patterns

Attributed sample
24 messages
Active dates
1 UTC dates
Estimated median S/N
-12 dB
Estimated 10th-90th percentile
-14 to -9 dB
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 22, strong (≥ -8 dB) 1.

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 HL5XL in decoded directed-looking exchanges:

Most frequent locator attributed to HL5XL

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
PM37 · 10 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
7,852 km (approx.)
Last such locator decoded
2026-08-28 14:25 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 UTCBandHL5XL S/NCounterpartCounterpart S/NMsgsCapture
08-29 16:07 40m - / -9 R7DX +1 / - 6 ✓ Closing fragment
08-29 16:06 40m - / -9 R6DYK -5 / - 3 Partial capture
08-29 16:06 40m - / -12 RD7LC +1 / - 4 ✓ Closing fragment
08-29 04:52 20m - / - R6OK -6 / - 4 Partial capture
08-29 04:46 20m - / -14 R8QA -4 / - 2 Partial capture
08-29 04:42 20m - / -21 ER3ZW -4 / - 3 Partial capture
08-29 04:42 20m - / -19 RU3GF -2 / - 2 ✓ Closing fragment
08-29 04:42 20m - / -11 US1VM -4 / - 2 Partial capture
08-28 14:28 20m - / -5 F5DGQ -6 / - 7 Partial capture
08-28 14:27 20m - / - F4IOE +2 / - 3 Partial capture
08-28 14:26 20m - / - F5ADE -10 / - 2 Partial capture
08-28 14:23 20m - / - IK4LZH +8 / - 4 Partial capture
08-28 14:23 20m - / - UT7ZM 0 / - 8 Partial capture
08-28 14:23 20m -13 / - R2ACA - / - 4 ✓ Closing fragment
08-28 14:22 20m - / - F4IQX +8 / - 4 Partial capture
08-28 14:22 20m - / - F4LHL -8 / - 4 Partial capture
08-28 14:20 20m - / - G3VMW +12 / - 2 Partial capture
08-28 14:19 20m -13 / -9 R6LKG -1 / -23 6 ✓ Full exchange observed
08-28 14:18 20m - / - UT2UCI -10 / - 5 Partial capture
08-28 14:18 20m -14 / - UA0LQE - / -14 3 ✓ Closing fragment
08-28 14:16 20m -12 / - RD6OZ - / -10 3 ✓ Closing fragment
08-28 14:16 20m - / - M0LAD -5 / - 3 Partial capture
08-28 14:13 20m - / - F1JPG -1 / - 4 Partial capture
08-28 14:13 20m -9 / - RV6AVU - / +5 3 ✓ Closing fragment
08-28 14:12 20m - / - IK4LZH -2 / - 4 Partial capture
08-28 14:12 20m - / -8 IZ8EYN +8 / - 5 Partial capture
08-28 14:12 20m - / - UT2UCI -10 / - 5 Partial capture
08-28 14:06 40m - / - PD1RGW -20 / - 2 Partial capture
08-28 14:05 20m - / - PD1ADA -20 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
160630  -4 1540  HL5XL R6DYK -09
160700  +0 2278  HL5XL RD7LC -17
160700  +5 1981  HL5XL R7DX KN84
160700  -2 1540  HL5XL R6DYK -09
160730  +3 2277  HL5XL RD7LC -16
160730  -2 1981  HL5XL R7DX KN84
160730  -8 1540  HL5XL R6DYK -11
160800  +2 2278  HL5XL RD7LC RR73
160800 -14 1310  HL5XL RA9MAI MO64
160800  +0 1981  HL5XL R7DX KN84 (x2)
160830 -14 1278  HL5XL OH7BDI KP42
160900  +2 1981  HL5XL R7DX R-09
160900  -2 2279  HL5XL LY3GY KO24
160930  +3 1981  HL5XL R7DX 73
20m 
UTC    dB Audio  Message
044215  -4 2593  HL5XL US1VM -11
044215  -1 2728  HL5XL RU3GF -19
044215  -6 2040  HL5XL ER3ZW -21
044245  -4 2593  HL5XL US1VM -11
044245  -2 2728  HL5XL RU3GF RR73
044300  -6 2040  HL5XL ER3ZW -21 (x2)
044600  -5 2433  HL5XL R8QA -14 (x2)
044700 -18 1392  HL5XL UA3VVA LO06
045230  -8 2478  HL5XL R6OK KN87 (x4)
053200 -13 2263  HL5XL R9FDE LO88
10m 
UTC    dB Audio  Message
082600 -20 1129  HL5XL HB9BEM JN37

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