JA1IST — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

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

Receiver-side FT8 activity involving JA1IST, decoded by SO8OO in southeastern Poland. 2 FT8 messages attributed to this token as transmitter, on 20m, across 1 UTC dates in the available aggregate history. Last observed 2026-07-16.

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 2 FT8 messages attributed to JA1IST as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The available sample contains attributed decodes on 20 m (100%). The sample is too small to infer a recurring UTC-hour or received-S/N pattern.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

S/N pattern not inferred

Bands

20m · 2

First attributed message: 2026-07-16
Last attributed message: 2026-07-16 18:17 UTC

Observed FT8 message patterns

Attributed sample: 2 messages
Active dates: 1 UTC dates
S/N summary: Too few decodes
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

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 JA1IST in decoded directed-looking exchanges:

DK8IF · Fed. Rep. of Germany ON6AA · Belgium R5FN · European Russia RA9UUG · Asiatic Russia DL3GA · Fed. Rep. of Germany HB9EFK · Switzerland IK4RVY · Italy IZ4AIF · Italy LB7ZG · Norway R4FDD · European Russia R7DX · European Russia

Most frequent locator attributed to JA1IST

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 · 2 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,693 km (approx.)
Last such locator decoded: 2026-07-16 18:17 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	JA1IST S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-09 20:14	40m	- / -	HB9GII	-9 / -	2	Partial capture
10-09 20:11	40m	- / -	DK5WL	-10 / -	2	Partial capture
10-09 20:11	40m	- / -	R7ZY	+2 / -	2	Partial capture
10-09 20:11	40m	- / -	HB9GII	-1 / -	2	Partial capture
10-08 16:28	80m	- / -	LA9GX	+9 / -	5	Partial capture
10-08 16:26	80m	- / -	SP2HNF	+16 / -	6	Partial capture
10-04 17:43	40m	- / -15	R4FDD	-5 / -	3	✓ Closing fragment
10-04 17:42	40m	- / -11	HB9EFK	+8 / -	2	✓ Closing fragment
08-29 22:02	40m	- / -16	DM2SP	-1 / -	11	Partial capture
08-27 17:29	40m	- / -9	LB7ZG	+3 / -	4	✓ Closing fragment
08-27 17:29	40m	- / -8	R7DX	+1 / -	8	✓ Closing fragment
08-27 17:27	40m	- / -20	UB6OFG	+1 / -	2	Partial capture
08-27 17:26	40m	- / -	F4IFO	-10 / -	2	Partial capture
08-27 17:26	40m	- / -10	IZ4AIF	+2 / -	4	✓ Closing fragment
08-27 17:23	40m	- / -16	DL3GA	+21 / -	2	✓ Closing fragment
08-27 17:19	40m	- / -19	IK4RVY	0 / -	4	✓ Closing fragment
08-21 14:35	20m	- / -	ON4CBK	-4 / -	2	Partial capture
07-30 15:31	20m	- / -13	DK8IF	-10 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
174215  +7 2515  JA1IST HB9EFK -11 (x2)
174315  -4 2693  JA1IST R4FDD -15 (x3)
215915  +4 2605  JA1IST RV6AVU KN94 (x2)
201115  -2 2776  JA1IST HB9GII JN47
201145  +0 2549  JA1IST R7ZY KN98
201145  +0 2776  JA1IST HB9GII JN47
201145  -7 1658  JA1IST DK5WL JN39
201215  +3 2549  JA1IST R7ZY KN98
201215 -12 1658  JA1IST DK5WL JN39
201415  -7 2776  JA1IST HB9GII JN47 (x2)

80m

UTC    dB Audio  Message
162615 +14 2905  JA1IST SP2HNF JO94 (x5)
162815 +10  558  JA1IST LA9GX JO59
162845 -22 2303  JA1IST UN0GY -09
162845  +8  558  JA1IST LA9GX JO59
162915 +18  307  JA1IST SP2HNF JO94
163015  +7  558  JA1IST LA9GX JO59 (x3)

20m

UTC    dB Audio  Message
153100 -12 2423  JA1IST DK8IF R-13 (x2)
143200  -1 1577  JA1IST ON6AA JO11 (x3)
154400 +15 2666  JA1IST 9A170NT -11
143530  -4 1776  JA1IST ON4CBK JO11 (x2)
161800 -16 1775  JA1IST RA9UUG RR73
162245 -16 2151  JA1IST R1530IG -09
163430  -8 2794  JA1IST PD7JLP JO32
130630  -7 2531  JA1IST R9UDK -19
124330 -16 2638  JA1IST R5FN RR73

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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