SM7YLS — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Sweden Most frequent locator attributed to this token: JO65

Receiver-side FT8 activity involving SM7YLS, decoded by SO8OO in southeastern Poland. 89 FT8 messages attributed to this token as transmitter, on 40m, 10m, across 7 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-07-01.

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 89 FT8 messages attributed to SM7YLS as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (82%), followed by 40 m (18%). Several six-hour UTC windows tied for the largest share (74%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (72%); the estimated median was -3 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-3 dB

Estimated median S/N

Bands

40m · 16 10m · 73

First attributed message: 2026-06-11
Last attributed message: 2026-07-01 15:11 UTC

Observed FT8 message patterns

Attributed sample: 89 messages
Active dates: 7 UTC dates
Estimated median S/N: -3 dB
Estimated 10th-90th percentile: -12 to +10 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 23, strong (≥ -8 dB) 64.

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 SM7YLS in decoded directed-looking exchanges:

CS8ABF · Azores DG1BU · Fed. Rep. of Germany DN9PHI · Fed. Rep. of Germany F1SAA · France IU4QRO · Italy IW6CZF · Italy IZ1GCQ · Italy PA7J · Netherlands PD0LBY · Netherlands S57BZ · Slovenia UA4FKT · European Russia OE3FVU · Austria

Most frequent locator attributed to SM7YLS

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: JO65 · 42 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 855 km (approx.)
Last such locator decoded: 2026-07-01 15:11 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	SM7YLS S/N	Counterpart	Counterpart S/N	Msgs	Capture
07-20 07:32	10m	- / +5	IZ1GCQ	-9 / -	6	✓ Closing fragment
07-18 17:57	10m	- / -23	SV2CLJ	-4 / -	4	Partial capture
07-18 13:21	10m	- / -	SV2CLJ	-9 / -	3	Partial capture
07-04 06:28	40m	- / -14	OE3FVU	-22 / -	2	✓ Closing fragment
06-30 16:06	10m	- / +1	CS8ABF	-8 / -	2	✓ Closing fragment
06-29 13:46	10m	- / -5	PD2WL	-8 / -	3	Partial capture
06-29 13:44	10m	- / -	PA7J	-4 / -	2	✓ Closing fragment
06-28 15:47	10m	- / -	2E0KGX	-15 / -	3	Partial capture
06-28 15:43	10m	- / +2	DN9PHI	-3 / -	2	✓ Closing fragment
06-28 15:32	10m	- / -	DO7TW	-10 / -	4	Partial capture
06-28 15:27	10m	- / -	DG1BU	+1 / -	3	✓ Closing fragment
06-28 15:23	10m	- / -	DJ5TM	+10 / -	2	Partial capture
06-28 15:19	10m	- / +5	HB9MZI	-6 / -	2	Partial capture
06-28 15:18	10m	- / -	DO1FDK	-8 / -	2	Partial capture
06-28 15:15	10m	- / -1	PD0LBY	-14 / -	2	✓ Closing fragment
06-28 15:13	10m	- / -12	DJ0MAB	-1 / -	4	Partial capture
06-28 15:05	10m	- / 0	F1SAA	+8 / -	4	✓ Closing fragment
06-27 05:47	10m	- / -8	UA4FKT	-10 / -	7	✓ Closing fragment
06-27 05:46	10m	- / -23	OH6HOW	-10 / -	2	Partial capture
06-26 15:46	10m	- / 0	IU4QRO	+3 / -	3	✓ Closing fragment
06-26 15:43	10m	- / -	PD0IFI	+1 / -	2	Partial capture
06-26 15:36	10m	- / -5	S57BZ	-10 / -	2	✓ Closing fragment
06-26 15:34	10m	-10 / -	E70SZ	0 / +7	2	Partial capture
06-26 15:30	10m	-6 / -	TF8KW	- / -5	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

10m

UTC    dB Audio  Message
175700  -2  617  SM7YLS SV2CLJ -23 (x4)
072715  -6  530  SM7YLS R3PLA R-06
073045  -9 1444  SM7YLS F4LZZ JN09
073215 -10 1063  SM7YLS IZ1GCQ JN35 (x6)
110915 -19 1100  SM7YLS RM5C R+01
072715  +4  658  SM7YLS IZ2CPP JN45
172645  -8  488  SM7YLS IK4LZH +02

40m

UTC    dB Audio  Message
062845 -22 1779  SM7YLS OE3FVU R-14 (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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