SK5AA — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Sweden Most frequent locator attributed to this token: JO89

Receiver-side FT8 activity involving SK5AA, decoded by SO8OO in southeastern Poland. 32 FT8 messages attributed to this token as transmitter, on 80m, 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-20.

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 32 FT8 messages attributed to SK5AA as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (88%), followed by 20 m (13%). Several six-hour UTC windows tied for the largest share (66%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-8 dB

Estimated median S/N

Bands

80m · 28 20m · 4

First attributed message: 2026-06-06
Last attributed message: 2026-09-20 17:58 UTC

Observed FT8 message patterns

Attributed sample: 32 messages
Active dates: 4 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -12 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 12, strong (≥ -8 dB) 18.

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 SK5AA in decoded directed-looking exchanges:

KJ5MPL · United States ×2 IK4LZH · Italy OD5ZZ · Lebanon DL5DQZ · Fed. Rep. of Germany SP6FME · Poland

Most frequent locator attributed to SK5AA

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: JO89 · 17 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,106 km (approx.)
Last such locator decoded: 2026-09-20 17:57 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	SK5AA S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 17:57	80m	0 / -	RI1FJZ	- / -7	3	Partial capture
09-20 17:47	80m	-7 / 0	RI1FJZ	-22 / -	8	Partial capture
09-09 05:01	80m	- / -	9A5E	0 / -	6	Partial capture
09-09 05:00	80m	-10 / -13	DL5DQZ	-5 / -8	9	✓ Full exchange observed
09-09 04:58	80m	-8 / -	SM7/DL5BTE	- / -11	2	Partial capture
09-09 04:57	80m	- / -16	EM70WWW	-5 / -	4	Partial capture
09-09 04:57	80m	-6 / -	UX7QV	+2 / -6	8	Partial capture
09-09 04:57	80m	-4 / -	F4FQY	- / -10	3	Partial capture
09-09 04:52	80m	-11 / -4	SP6FME	+12 / -	10	✓ Closing observed
09-09 04:49	80m	- / -	OH3GBW	-13 / -	3	Partial capture
09-09 04:44	80m	-8 / -	KY2J	- / -	7	Partial capture
09-09 04:43	80m	-10 / -	K4YT	- / -	2	Partial capture
08-26 04:29	20m	- / -	KJ5MPL	-14 / -	4	✓ Closing fragment
07-29 11:36	20m	- / -	IK4LZH	+3 / -	2	✓ Closing fragment
07-29 09:33	20m	- / -3	R4FDW	-21 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
050315  +0 2134  SK5AA 9A5E JN75
050345  -2 1918  SK5AA DL5DQZ 73
050345  +1 2134  SK5AA 9A5E JN75
174715  -3 1502  RI1FJZ SK5AA JO89 (x4)
175130 -17 1301  SK5AA RI1FJZ +00 (x4)
175715  -2 1130  RI1FJZ SK5AA JO89 (x3)
175830 -20 1301  SK5AA RR73; RU6K <...> -08

20m

UTC    dB Audio  Message
093345 -24 2129  SK5AA R4FDW -03 (x2)
113645  +1  463  SK5AA IK4LZH +18 (x2)
181045  +0 1322  SK5AA RC6OU KN98
042545  -9  614  SK5AA OD5ZZ RR73
042945 -14  810  SK5AA KJ5MPL RR73 (x4)

40m

UTC    dB Audio  Message
114815 -21 1664  SK5AA DL7ACA JO40

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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