JH1ORW — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving JH1ORW, decoded by SO8OO in southeastern Poland. 9 FT8 messages attributed to this token as transmitter, on 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-08-27.

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 9 FT8 messages attributed to JH1ORW as the transmitting token by decoded message structure across 6 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 -17 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-17 dB

Estimated median S/N

Bands

20m · 9

First attributed message: 2026-06-06
Last attributed message: 2026-08-27 20:56 UTC

Observed FT8 message patterns

Attributed sample: 9 messages
Active dates: 6 UTC dates
Estimated median S/N: -17 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) 3, 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 JH1ORW in decoded directed-looking exchanges:

DD7EE · Fed. Rep. of Germany DF3IS · Fed. Rep. of Germany DL1JSO · Fed. Rep. of Germany DL2EMU · Fed. Rep. of Germany EA1ACP · Spain EA5BLP · Spain EA5JLB · Spain EA5JLN · Spain F5IYE · France F6EKI · France G0VXE · England IK4RUX · Italy

Most frequent locator attributed to JH1ORW

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 · 9 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,693 km (approx.)
Last such locator decoded: 2026-08-27 20:56 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	JH1ORW S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-27 21:28	20m	- / -16	S57TW	+10 / -	3	Partial capture
08-27 20:52	20m	- / -13	S57TW	+12 / -	2	Partial capture
08-27 20:48	20m	- / -14	SP6TGI	+12 / -	2	✓ Closing fragment
08-23 21:58	20m	- / -17	EA5JLB	-4 / -	2	✓ Closing fragment
08-23 21:41	20m	- / -17	EA5JLB	-10 / -	4	Partial capture
08-23 21:24	20m	- / -20	EA5JLN	-6 / -	2	✓ Closing fragment
08-21 20:54	20m	- / -10	EA1ACP	+8 / -	4	✓ Closing fragment
08-16 21:19	20m	- / -15	DL1JSO	+1 / -	3	✓ Closing fragment
08-14 21:46	20m	- / -14	F6EKI	-14 / -	2	✓ Closing fragment
08-08 21:22	20m	- / -13	PY5BH	-15 / -	3	✓ Closing fragment
08-06 20:47	20m	- / -17	F5IYE	-3 / -	4	✓ Closing fragment
08-06 20:41	20m	- / -25	G0VXE	+15 / -	3	✓ Closing fragment
08-05 21:13	20m	- / -17	F5SJC	+3 / -	3	Partial capture
08-03 21:17	20m	- / -15	IK4RUX	-8 / -	3	✓ Closing fragment
07-19 21:30	20m	- / -21	EA5BLP	-11 / -	4	✓ Closing fragment
07-19 20:43	20m	- / -7	DD7EE	-6 / -	2	✓ Closing fragment
07-19 12:16	20m	- / -	RA3PMM	-11 / -	7	Partial capture
07-18 21:07	20m	- / -5	OK1KKI	+11 / -	2	✓ Closing fragment
07-17 21:28	20m	- / +2	IZ2LTW	-4 / -	3	✓ Closing fragment
06-29 21:25	20m	- / -16	OL6WWA	+1 / -	3	✓ Closing fragment
06-27 21:28	20m	- / -23	SV2HTW	-1 / -	6	✓ Closing fragment
06-25 21:01	20m	- / -8	IW2GQW	-8 / -	2	✓ Closing fragment
06-24 21:14	20m	- / -18	UN6LN	-2 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
214215 -12 1186  JH1ORW EA5JLB -17 (x5)
204830 +12 1578  JH1ORW SP6TGI -14 (x2)
205230 +10  343  JH1ORW S57TW -13 (x2)
205615 -17 2400  9K2GR JH1ORW PM95
210600  -9 2804  JH1ORW UA0LQE PN53
211630 -17 2258  JH1ORW 9K2GR -12
212800  +5  343  JH1ORW S57TW -16 (x3)

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