JF1SQC — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Japan Most frequent locator attributed to this token: PM95

Receiver-side FT8 activity involving JF1SQC, decoded by SO8OO in southeastern Poland. 6 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 1 UTC dates in the available aggregate history. Last observed 2026-09-02.

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 6 FT8 messages attributed to JF1SQC 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 (83%), followed by 80 m (17%). In this small sample, the estimated median decoder S/N was -19 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-19 dB

Estimated median S/N

Bands

80m · 1 40m · 5

First attributed message: 2026-09-02
Last attributed message: 2026-09-02 19:23 UTC

Observed FT8 message patterns

Attributed sample: 6 messages
Active dates: 1 UTC dates
Estimated median S/N: -19 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 0.

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 JF1SQC in decoded directed-looking exchanges:

EU6UE · Belarus OK1UG · Czech Republic YO8RQP · Romania R3TY · European Russia 9A4ZM · Croatia R2AVW · European Russia SP9UPH · Poland R4PFY · European Russia SP9KR · Poland HA5CPN · Hungary UB1CCL · European Russia UC6D · European Russia

Most frequent locator attributed to JF1SQC

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: PM95
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,693 km (approx.)
Last such locator decoded: 2026-09-02 17:12 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	JF1SQC S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-02 19:23	80m	- / -15	SP9KR	+14 / -	4	✓ Closing fragment
09-02 17:37	40m	- / -	S54A	+2 / -	2	Partial capture
09-02 17:35	40m	- / -13	R3TY	-3 / -	3	✓ Closing fragment
09-02 17:34	40m	- / -15	YO8RQP	0 / -	3	✓ Closing fragment
09-02 17:33	40m	- / -10	9A4ZM	+3 / -	3	✓ Closing fragment
09-02 17:31	40m	- / -22	UB1CCL	-8 / -	2	✓ Closing fragment
09-02 17:27	40m	- / -11	SQ4WMA	-8 / -	2	Partial capture
09-02 17:21	40m	- / -4	OK1UG	+9 / -	5	✓ Closing fragment
09-02 17:17	40m	- / -	DJ8UU	-1 / -	7	Partial capture
09-02 17:15	40m	-17 / -13	SP6FME	+4 / -12	3	✓ Full exchange observed
09-02 17:14	40m	-18 / -6	OE1AVO	+6 / -15	4	✓ Full exchange observed
09-02 17:13	40m	- / -	DL7VBH	-8 / -	2	Partial capture
09-02 17:13	40m	- / -8	SP9UPH	+20 / -	2	✓ Closing fragment
09-02 17:11	40m	-19 / -10	HA5CPN	+14 / -	3	✓ Closing observed
09-02 17:06	40m	- / -14	R2AVW	0 / -	2	✓ Closing fragment
09-02 17:03	40m	- / -8	UR1CCT	+14 / -	3	✓ Closing fragment
09-02 15:49	80m	- / -15	RU3ACA	-7 / -	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
154900 -10 1078  JF1SQC RU3ACA -15 (x2)
192300 -20 2493  LZ1GC JF1SQC -13
192345 +16 1409  JF1SQC SP9KR JO90 (x4)

60m

UTC    dB Audio  Message
184015  -5 1020  JF1SQC DK9TZ JN48

40m

UTC    dB Audio  Message
173100  -6 2345  JF1SQC UB1CCL R-22 (x2)
173230  +3 2347  JF1SQC UC6D RR73
173300  +2 2343  JF1SQC 9A4ZM JN86 (x3)
173400  +2  588  JF1SQC YO8RQP KN37 (x3)
173530  -6 2729  JF1SQC R3TY LO25 (x3)
173730  +0 1847  JF1SQC S54A JN76 (x2)
174130  -9 2052  JF1SQC EU6UE RR73

20m

UTC    dB Audio  Message
042645 -14 2253  JF1SQC <...> -18

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