HC5TSA — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Ecuador Most frequent locator attributed to this token: FI07

Receiver-side FT8 activity involving HC5TSA, decoded by SO8OO in southeastern Poland. 45 FT8 messages attributed to this token as transmitter, on 20m, across 1 UTC dates in the available aggregate history. Last observed 2026-08-25.

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 45 FT8 messages attributed to HC5TSA 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

Messages attributed

UTC dates decoded

Active 15-min windows

-12 dB

Estimated median S/N

Bands

20m · 45

First attributed message: 2026-08-25
Last attributed message: 2026-08-25 03:22 UTC

Observed FT8 message patterns

Attributed sample: 45 messages
Active dates: 1 UTC dates
Estimated median S/N: -12 dB
Estimated 10th-90th percentile: -15 to -8 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 37, strong (≥ -8 dB) 6.

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 HC5TSA in decoded directed-looking exchanges:

DK9ZQ · Fed. Rep. of Germany DL3RAJ · Fed. Rep. of Germany DL8WEM · Fed. Rep. of Germany KB4IAL · United States KB8YVC · United States KO6KFH · United States OE9KFV · Austria PD0RCQ · Netherlands R9WJ · Asiatic Russia RA3RDN · European Russia RZ4LC · European Russia WA2HIP · United States

Most frequent locator attributed to HC5TSA

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: FI07 · 13 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 10,991 km (approx.)
Last such locator decoded: 2026-08-25 03:16 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 UTC	Band	HC5TSA S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-25 03:29	20m	- / -5	OE9KFV	+11 / -	4	✓ Closing fragment
08-25 03:18	20m	-10 / -6	DL3RAJ	-10 / -4	7	✓ Full exchange observed
08-25 03:16	20m	-10 / -	DL1R	+9 / +2	12	Partial capture
08-25 03:11	20m	-12 / -16	RZ4LC	-15 / +5	3	✓ Full exchange observed
08-25 03:08	20m	-12 / -	YT1DDL	- / +1	3	✓ Closing fragment
08-25 03:07	20m	- / -	RZ4AZ	-15 / -	2	Partial capture
08-25 03:06	20m	-12 / -	RA3RDN	- / +5	2	✓ Closing fragment
08-25 03:04	20m	- / -	RX9ABI	-6 / -	2	Partial capture
08-25 03:04	20m	-12 / -	KO6KFH	- / -11	2	✓ Closing fragment
08-25 03:02	20m	- / -	R9FF	-4 / -	2	Partial capture
08-25 03:02	20m	-9 / -	RA4ABH	- / -6	3	Partial capture
08-25 03:00	20m	-8 / -11	DL8WEM	+17 / -	5	✓ Full exchange observed
08-25 02:36	20m	-12 / -	R9WJ	- / +3	2	✓ Closing fragment
08-25 02:33	20m	-14 / -	WA2HIP	- / -3	2	✓ Closing fragment
08-25 02:31	20m	-12 / -	KB8YVC	- / -6	2	✓ Closing fragment
08-25 02:29	20m	-13 / -	PD0RCQ	- / -4	2	✓ Closing fragment
08-25 02:27	20m	-12 / 0	DK9ZQ	-13 / +1	5	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
031930 -10 3094  DL3RAJ HC5TSA -04
031945 +10 2658  HC5TSA DL1R JN58
032000  -9 3094  DL3RAJ HC5TSA -04
032015  +7 2658  HC5TSA DL1R JN58
032030 -11 3093  DL3RAJ HC5TSA -04
032045  -5 2184  HC5TSA DL3RAJ R-06
032045  +9 2658  HC5TSA DL1R JN58
032115  +1 2184  HC5TSA DL3RAJ 73
032130 -12 3093  DL1R HC5TSA +02 (x3)
032945 +14 3075  HC5TSA OE9KFV JN47 (x4)

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