DS1JFY — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Republic of Korea Most frequent locator attributed to this token: PM37

Receiver-side FT8 activity involving DS1JFY, decoded by SO8OO in southeastern Poland. 15 FT8 messages attributed to this token as transmitter, on 40m, across 1 UTC dates in the available aggregate history. Last observed 2026-09-12.

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 15 FT8 messages attributed to DS1JFY as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 40 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

40m · 15

First attributed message: 2026-09-12
Last attributed message: 2026-09-12 22:09 UTC

Observed FT8 message patterns

Attributed sample: 15 messages
Active dates: 1 UTC dates
Estimated median S/N: -12 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) 11, strong (≥ -8 dB) 1.

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 DS1JFY in decoded directed-looking exchanges:

CT7AXN · Portugal EA4CFT · Spain G0GFC · England LB7ZG · Norway M0AQM · England MM0NDX · Scotland PY7XC · Brazil R2BQM · European Russia SY1BKQ · Greece

Most frequent locator attributed to DS1JFY

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: PM37 · 2 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,852 km (approx.)
Last such locator decoded: 2026-09-12 22:01 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	DS1JFY S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-12 22:09	40m	-14 / -	LA9JKA	-22 / -8	3	Partial capture
09-12 21:59	40m	-12 / -12	G0GFC	-2 / -19	7	✓ Full exchange observed
09-12 21:55	40m	- / -	EA1B	-5 / -	2	Partial capture
09-12 21:54	40m	- / -	IU1WYC	-16 / -	2	Partial capture
09-12 21:54	40m	- / -9	IZ5IMD	+15 / -	7	Partial capture
09-12 21:49	40m	- / -	RD7KW	+12 / -	5	Partial capture
09-12 21:48	40m	-9 / -	CT7AXN	- / +6	2	✓ Closing fragment
09-12 21:48	40m	- / -	PI4TX	-12 / -	3	Partial capture
09-12 21:43	40m	- / -15	R2BQM	-1 / -	3	✓ Closing fragment
09-12 21:38	40m	-15 / -5	LB7ZG	-7 / -	3	✓ Closing observed
09-12 21:37	40m	-16 / -	MM0NDX	- / -6	2	✓ Closing fragment
09-12 21:37	40m	- / -	DL1KMD	+2 / -	5	Partial capture
09-12 21:37	40m	- / -4	SY1BKQ	-9 / -	11	✓ Closing fragment
09-12 21:37	40m	- / -	IZ5IMD	+15 / -	5	Partial capture
09-12 21:36	40m	- / -	SV1DKR	-7 / -	2	Partial capture
09-12 21:34	40m	-10 / -	M0AQM	-3 / -13	3	✓ Closing observed
09-12 21:34	40m	- / -	DF1OLS	+4 / -	6	Partial capture
09-12 21:33	40m	-12 / -	MW6YPO	- / -6	2	Partial capture
09-12 21:33	40m	- / -12	R2BQM	+6 / -	6	Partial capture
09-11 22:24	40m	- / -15	PY7XC	-12 / -	5	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
215600  -3 1435  DS1JFY EA1B IN83
215630 +17 2199  DS1JFY IZ5IMD JN53 (x2)
215900  -1  277  DS1JFY G0GFC IO92
215900  -6 2092  DS1JFY EA2AA IN83
215930  +0  277  DS1JFY G0GFC IO92 (x2)
220045 -11 2733  G0GFC DS1JFY -19
220100  -1  276  DS1JFY G0GFC R-11
220115 -12  275  G0GFC DS1JFY RR73
220130  -5  276  DS1JFY G0GFC 73
220145 -21 1163  NU3A DS1JFY PM37
220915 -14 2698  LA9JKA DS1JFY -08
221000 -21 1664  DS1JFY LA9JKA JP32 (x2)

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