HK4SAN — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Colombia Most frequent locator attributed to this token: FJ26

Receiver-side FT8 activity involving HK4SAN, decoded by SO8OO in southeastern Poland. 360 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 10 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-05.

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 360 FT8 messages attributed to HK4SAN as the transmitting token by decoded message structure across 10 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (80%), followed by 40 m (20%) and 80 m (1%). Most decodes (99%) fell within the six-hour window 21:00-03:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

360
Messages attributed
10
UTC dates decoded
40
Active 15-min windows
-11 dB
Estimated median S/N

Bands

80m · 2 40m · 71 20m · 287
First attributed message: 2026-06-08
Last attributed message: 2026-09-05 02:03 UTC

Observed FT8 message patterns

Attributed sample
360 messages
Active dates
10 UTC dates
Estimated median S/N
-11 dB
Estimated 10th-90th percentile
-18 to -4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 90, moderate (-15 to -9 dB) 143, strong (≥ -8 dB) 127.

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 HK4SAN 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 HK4SAN

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
FJ26 · 145 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
9,937 km (approx.)
Last such locator decoded
2026-09-05 01:41 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 UTCBandHK4SAN S/NCounterpartCounterpart S/NMsgsCapture
09-06 07:34 40m - / - F4HZA -13 / - 3 Partial capture
09-05 02:14 40m - / -12 SV5BYP +4 / - 2 ✓ Closing fragment
09-05 02:04 80m - / - YT6AAA +16 / - 6 Partial capture
09-05 02:03 80m - / - DO5HOK -3 / - 3 Partial capture
09-05 02:02 80m - / - DL9DX +4 / - 3 Partial capture
09-05 02:02 80m -18 / -11 HB9CXZ -1 / -12 5 ✓ Full exchange observed
09-05 02:02 80m - / - PA3KUS -2 / - 2 Partial capture
09-05 01:58 80m - / -3 ON6AA +14 / - 5 ✓ Closing fragment
09-05 01:41 40m - / - RV3TV +4 / - 5 Partial capture
09-05 01:41 40m -4 / - UA4CPM +6 / -2 4 Partial capture
09-05 01:40 40m - / -6 R6JC -4 / - 2 Partial capture
09-05 01:39 40m -3 / - RY3F - / -13 3 Partial capture
09-05 01:37 40m -5 / -5 RT6DU +1 / -8 6 ✓ Full exchange observed
09-05 01:37 40m - / - RV3TV +5 / - 3 Partial capture
09-05 01:36 40m -5 / - KK7GUU - / -10 2 Partial capture
09-05 01:34 40m -6 / - OK1JAZ - / -8 2 Partial capture
09-05 01:34 40m - / -10 UB4CGR -4 / - 9 Partial capture
09-05 01:34 40m - / - F6FHZ -4 / - 9 Partial capture
09-05 01:33 40m - / -7 RA3TKS +8 / - 5 Partial capture
09-05 01:31 40m -6 / -11 RX9WN -5 / -5 7 ✓ Full exchange observed
09-05 01:31 40m -6 / -14 UB4HVA -20 / - 5 ✓ Closing observed
09-05 01:27 40m -6 / -22 UN9LCW -6 / -14 10 Partial capture
09-05 01:22 40m -6 / -9 N8GAS -16 / -7 4 Partial capture
09-05 01:20 40m -7 / - ER1CW - / - 2 Partial capture
09-05 01:18 40m -6 / - R3YK -11 / -15 6 ✓ Closing observed
09-05 01:17 40m -9 / -4 SV1MOZ -14 / -11 5 ✓ Full exchange observed
09-05 01:13 40m -7 / -12 R3OR -1 / -2 4 ✓ Full exchange observed
09-05 01:12 40m -6 / - JY5IB - / - 2 ✓ Closing fragment
09-05 01:11 40m -8 / -10 RC9WC -9 / -7 3 ✓ Full exchange observed
09-05 01:09 40m -8 / -16 8Q7PR -6 / -13 6 ✓ Full exchange observed
09-05 01:08 40m -7 / - TN8GD - / - 4 Partial capture
09-05 01:07 40m -7 / - UX7QV - / -12 2 Partial capture
09-05 01:05 40m - / -11 RX9WN -7 / - 3 Partial capture
09-05 01:04 40m - / -4 RN6HK -2 / - 5 ✓ Closing fragment
09-05 01:03 40m - / -7 EX7CQ -4 / - 2 ✓ Closing fragment
09-05 01:03 40m - / -12 UK8OM +5 / - 4 ✓ Closing fragment
09-05 00:58 40m -7 / - EX7CQ - / - 5 Partial capture
09-05 00:57 40m - / - SV5BYP +5 / - 5 Partial capture
08-30 00:37 40m - / - EA5HM -6 / - 2 Partial capture
08-30 00:36 40m -6 / - DL8OBF - / +6 2 Partial capture
08-30 00:34 40m -8 / -12 EA9ABC -8 / - 3 ✓ Closing observed
08-30 00:34 40m - / - R4RM 0 / - 2 Partial capture
08-30 00:06 40m - / - IU0VYT -8 / - 6 Partial capture
08-30 00:01 40m -1 / - TN8GD - / -24 9 Partial capture
08-30 00:01 40m - / - EA3AAY -1 / - 3 Partial capture
07-30 23:56 20m - / - DL3HN -21 / - 3 Partial capture
07-30 23:47 20m -15 / - LZ1GC - / - 2 Partial capture
07-29 11:12 20m - / - PC7M -15 / - 5 Partial capture
07-29 11:08 20m - / -8 GJ0KYZ -1 / - 2 ✓ Closing fragment
07-29 11:07 20m - / - M7NXS -9 / - 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
014130  -2  984  HK4SAN RV3TV KO91
014130  -2 1218  HK4SAN R6JC -06
014145  -6 1218  UA4CPM HK4SAN -02
014200  -5  908  HK4SAN UB4CGR -12
014200  +2  984  HK4SAN RV3TV KO91
014215  -2 1218  UA4CPM HK4SAN RRR
014230  +6  984  HK4SAN RV3TV KO91 (x3)
020930  +7 2850  HK4SAN RA3TKS -09
021400  +2 2015  HK4SAN SV5BYP -12 (x2)
073415 -14 1047  HK4SAN F4HZA JN18 (x3)
80m 
UTC    dB Audio  Message
020315  +1  665  HK4SAN PA3KUS JO21
020315  -1 1913  HK4SAN HB9CXZ R-11
020315  -8  808  HK4SAN DO5HOK JO41
020330 -17 1183  HB9CXZ HK4SAN RRR
020345  +0 1913  HK4SAN HB9CXZ 73
020345  +1  808  HK4SAN DO5HOK JO41
020345  +9 1774  HK4SAN DL9DX JO60
020415 +19 1174  HK4SAN YT6AAA KN04
020415  -3  808  HK4SAN DO5HOK JO41
020415  +4 1774  HK4SAN DL9DX JO60
020445 +14 1173  HK4SAN YT6AAA KN04 (x5)
20m 
UTC    dB Audio  Message
234945 -15  857  CQ HK4SAN FJ26 (x3)
235130  -6  856  HK4SAN EI2FS IO51
235145 -14  856  CQ HK4SAN FJ26                        a1 (x2)
235245 -13 1066  WA2HMM HK4SAN -01
235415 -14 1065  CQ HK4SAN FJ26 (x2)
235545 -12 1064  EA5N HK4SAN 73
235600 -20 1630  HK4SAN DL3HN JN49
235615 -10 1064  CQ HK4SAN FJ26
235630 -19 1630  HK4SAN DL3HN JN49
235645 -11 1064  DL1UDO HK4SAN -07
235830 -24 1630  HK4SAN DL3HN JN49
10m 
UTC    dB Audio  Message
150100  +2 1227  HK4SAN IK4ISR -12 (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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