JI2SWW — 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: PM85

Receiver-side FT8 activity involving JI2SWW, decoded by SO8OO in southeastern Poland. 6 FT8 messages attributed to this token as transmitter, on 20m, across 1 UTC dates in the available aggregate history. Last observed 2026-08-23.

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 JI2SWW as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was -13 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-13 dB

Estimated median S/N

Bands

20m · 6

First attributed message: 2026-08-23
Last attributed message: 2026-08-23 14:37 UTC

Observed FT8 message patterns

Attributed sample: 6 messages
Active dates: 1 UTC dates
Estimated median S/N: -13 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 5, 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 JI2SWW in decoded directed-looking exchanges:

CN8NS · Morocco EA3IDY · Spain LZ3BS · Bulgaria LZ7DX · Bulgaria OE6HTG · Austria ON4AOI · Belgium RC6OG · European Russia TA4DX · Asiatic Turkey UT7UJ · Ukraine

Most frequent locator attributed to JI2SWW

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: PM85 · 2 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,586 km (approx.)
Last such locator decoded: 2026-08-23 14:35 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	JI2SWW S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-21 15:17	40m	- / -20	UG4L	-9 / -	2	Partial capture
08-25 15:31	20m	- / -20	UA4FEN	-6 / -	4	Partial capture
08-24 15:26	20m	- / -11	TA4DX	+8 / -	2	✓ Closing fragment
08-23 14:52	20m	- / -12	PA7TT	-7 / -	2	Partial capture
08-23 14:47	20m	- / -	PA7TT	-5 / -	3	Partial capture
08-23 14:43	20m	- / -	EA3IDY	+8 / -	2	Partial capture
08-23 14:36	20m	- / -	PD2BA	-7 / -	3	Partial capture
08-23 14:35	20m	-12 / -	R6DBT	0 / -24	5	Partial capture
08-23 14:24	20m	- / -	EA3IDY	+4 / -	3	Partial capture
08-23 14:14	20m	- / -	RA3ZH	+7 / -	2	Partial capture
08-23 14:12	20m	- / -	LZ7DX	-7 / -	2	✓ Closing fragment
08-23 14:05	20m	-23 / -16	OE6HTG	+10 / -	3	✓ Closing observed
08-20 22:00	20m	- / -19	CN8NS	-6 / -	4	✓ Closing fragment
08-20 14:39	20m	- / -24	EA3HKA	-2 / -	6	Partial capture
08-20 14:09	20m	- / -10	LZ3BS	+2 / -	2	✓ Closing fragment
08-20 14:06	20m	- / -16	UT7UJ	+12 / -	2	✓ Closing fragment
08-18 15:07	20m	- / -	EA3IDY	+2 / -	5	Partial capture
08-18 14:38	20m	- / +7	F4LZZ	-14 / -	5	Partial capture
08-18 14:29	20m	- / -8	ON4AOI	-8 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
151730  -9 1091  JI2SWW UG4L -20 (x2)

20m

UTC    dB Audio  Message
144345 +10  547  JI2SWW EA3IDY JN01 (x2)
144715  -3  618  JI2SWW PA7TT JO33 (x5)
152645  +5  826  JI2SWW TA4DX -11 (x2)
153100  -4 1232  JI2SWW UA4FEN -20 (x4)
131530 -12  782  JI2SWW MI0JZZ -17
144515  -1  490  JI2SWW 4X1YY -16

CW

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

Explore CW reception at SO8OO

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