JH1FSB — 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 JH1FSB, decoded by SO8OO in southeastern Poland. 5 FT8 messages attributed to this token as transmitter, on 80m, across 3 UTC dates in the available aggregate history. Observed between 2026-09-28 and 2026-10-18.

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 5 FT8 messages attributed to JH1FSB as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (100%). 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 · 5

First attributed message: 2026-09-28
Last attributed message: 2026-10-18 20:06 UTC

Observed FT8 message patterns

Attributed sample: 5 messages
Active dates: 3 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) 3, moderate (-15 to -9 dB) 2, 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 JH1FSB in decoded directed-looking exchanges:

RA3GDV · European Russia 4O4A · Montenegro D2UY · Angola DJ7M · Fed. Rep. of Germany EW6BZ · Belarus F5UKW · France F6CTT · France IK5CHL · Italy LZ1GC · Bulgaria OE8DDX · Austria OH2BV · Finland ON4IQ · Belgium

Most frequent locator attributed to JH1FSB

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 · 5 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,693 km (approx.)
Last such locator decoded: 2026-10-18 20:06 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	JH1FSB S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-05 20:50	80m	- / -18	OE8DDX	+20 / -	2	✓ Closing fragment
11-05 20:48	80m	- / -16	YO9HP	+10 / -	2	✓ Closing fragment
10-28 20:15	80m	- / -17	OT7K	+12 / -	3	✓ Closing fragment
10-25 20:31	80m	- / -8	4O4A	+20 / -	2	✓ Closing fragment
10-22 20:47	80m	- / -23	US0QV	-6 / -	2	✓ Closing fragment
10-18 20:52	80m	- / -24	ON6AA	+4 / -	3	Partial capture
10-18 20:50	80m	- / -21	F6CTT	-3 / -	4	✓ Closing fragment
10-18 20:05	80m	-24 / -	R2DAR	- / -	2	Partial capture
10-17 20:03	80m	- / -21	LZ1GC	+2 / -	2	✓ Closing fragment
10-15 19:58	80m	- / -17	ON4IQ	+17 / -	2	✓ Closing fragment
10-13 20:39	80m	- / -23	UF5F	-4 / -	3	✓ Closing fragment
10-13 20:33	80m	- / -17	EW6BZ	+10 / -	3	✓ Closing fragment
09-29 20:42	80m	- / -7	OH2BV	+13 / -	2	✓ Closing fragment
09-29 20:22	80m	- / -19	F5UKW	+4 / -	2	✓ Closing fragment
09-27 21:00	80m	- / -13	DJ7M	+14 / -	2	✓ Closing fragment
09-17 20:18	80m	- / -	SP5C	-6 / -	3	Partial capture
09-14 20:05	80m	- / -18	SV9CVY	-5 / -	2	✓ Closing fragment
09-09 20:06	80m	- / -16	UX1AA	-5 / -	5	Partial capture
09-09 19:27	80m	- / -12	UX5UO	+14 / -	3	✓ Closing fragment
09-08 20:48	40m	- / -23	RA3GDV	0 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
205330  +6 1255  JH1FSB ON6AA R-24
203630 -18 1707  JH1FSB UN3P -12
204715  -4 1403  JH1FSB US0QV -23 (x2)
203115 +20 2673  JH1FSB 4O4A -08 (x2)
203400 -17 1844  JH1FSB RW9MZ -15
203045  -1 1314  JH1FSB IK5CHL RR73
201530 +10 2001  JH1FSB OT7K -17 (x3)
204800 +13 2261  JH1FSB YO9HP -16 (x2)
205030 +16 2554  JH1FSB OE8DDX -18 (x2)

40m

UTC    dB Audio  Message
204830  -3 1012  JH1FSB RA3GDV -23 (x2)

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.

CW

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

Explore CW reception at SO8OO

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