IS0YQK — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Sardinia Most frequent locator attributed to this token: JN40

Receiver-side FT8 activity involving IS0YQK, decoded by SO8OO in southeastern Poland. 19 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-07-08 and 2026-07-30.

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 19 FT8 messages attributed to IS0YQK as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (89%), followed by 40 m (11%). In this small sample, the estimated median decoder S/N was -4 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-4 dB

Estimated median S/N

Bands

40m · 2 20m · 17

First attributed message: 2026-07-08
Last attributed message: 2026-07-30 18:13 UTC

Observed FT8 message patterns

Attributed sample: 19 messages
Active dates: 5 UTC dates
Estimated median S/N: -4 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 3, moderate (-15 to -9 dB) 4, strong (≥ -8 dB) 12.

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 IS0YQK in decoded directed-looking exchanges:

DN9MRB · Fed. Rep. of Germany IZ2EID · Italy CN2DX · Morocco E74R · Bosnia-Herzegovina

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 IS0YQK

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: JN40 · 12 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,447 km (approx.)
Last such locator decoded: 2026-07-30 18:13 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	IS0YQK S/N	Counterpart	Counterpart S/N	Msgs	Capture
07-30 18:12	20m	-21 / -13	TN8GD	-14 / -	9	Partial capture
07-30 18:05	20m	+2 / -	M1DBW	- / -6	2	Partial capture
07-30 18:03	20m	+2 / -	9A4ZM	- / -	4	Partial capture
07-29 18:31	20m	-7 / -	LB5SK	- / -	3	Partial capture
07-29 18:26	20m	-12 / -	ON6DSL	-12 / -18	3	Partial capture
07-28 18:48	20m	- / -2	M0MLS	-13 / -	5	Partial capture
07-28 18:44	20m	- / -2	M0MLS	-10 / -	2	Partial capture
07-28 18:43	20m	0 / +4	CN2DX	+4 / -13	7	✓ Full exchange observed
07-28 18:27	10m	- / +4	DN9MRB	-15 / -	2	✓ Closing fragment
07-23 18:48	20m	- / -6	EA1PZQ	-22 / -	2	Partial capture
07-08 19:01	40m	-14 / +10	E74R	-6 / -11	4	✓ Full exchange observed
07-08 18:56	40m	- / -	UR4UUR	-20 / -	2	Partial capture
07-08 18:53	40m	- / -4	E72ET	-7 / -	3	Partial capture
06-26 16:06	10m	- / -	DA1VID	-15 / -	9	Partial capture

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
180315  +4 2082  9A4ZM IS0YQK JN40 (x4)
180545  +5 1196  M1DBW IS0YQK JN40 (x2)
181230 -16 1622  IS0YQK TN8GD -13 (x3)
181345 -21 1622  TN8GD IS0YQK JN40
181400 -14 1622  IS0YQK TN8GD -13 (x5)

10m

UTC    dB Audio  Message
160545  -9 1937  IS0YQK IZ2EID RR73
160645 -15 1428  IS0YQK DA1VID JO31 (x9)
182700 -16 1880  IS0YQK DN9MRB +04 (x2)

40m

UTC    dB Audio  Message
185345  -6 1625  IS0YQK E72ET -04 (x3)
185615 -18 1650  IS0YQK UR4UUR KO50 (x2)
190145  -7 2448  IS0YQK E74R +10
190200 -13 2447  E74R IS0YQK R-11
190215  -6 2447  IS0YQK E74R RR73
190230 -16 2447  E74R IS0YQK 73

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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