JH7BDS — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Japan Most frequent locator attributed to this token: QM09

Receiver-side FT8 activity involving JH7BDS, decoded by SO8OO in southeastern Poland. 1 FT8 messages attributed to this token as transmitter, on 20m, across 1 UTC dates in the available aggregate history. Last observed 2026-07-29.

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 1 FT8 messages attributed to JH7BDS 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 · 1

First attributed message: 2026-07-29
Last attributed message: 2026-07-29 20:59 UTC

Observed FT8 message patterns

Attributed sample: 1 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 JH7BDS in decoded directed-looking exchanges:

R6ML · European Russia ×2 OH5KNL · Finland R3BY · European Russia R8FB · European Russia RA3UEV · European Russia RD7O · European Russia RM3ZR · European Russia RN3QTS · European Russia RU3GF · European Russia SP7SEK · Poland SV8JE · Greece UA4HJ · European Russia

Most frequent locator attributed to JH7BDS

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: QM09
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,434 km (approx.)
Last such locator decoded: 2026-07-29 20:59 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	JH7BDS S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-19 19:53	160m	- / -17	EX7CQ	-13 / -	3	Partial capture
09-15 19:47	160m	- / -	SP9ENV	-5 / -	3	Partial capture
09-15 19:45	160m	- / -18	OH5KNL	+4 / -	4	✓ Closing fragment
09-15 19:44	160m	- / -15	SP7SEK	+10 / -	2	✓ Closing fragment
09-07 19:21	160m	- / -	OM3PC	+22 / -	3	Partial capture
09-05 19:01	160m	- / -21	SV8JE	+2 / -	4	✓ Closing fragment
09-03 20:49	40m	- / -	GW4NOO	-6 / -	2	Partial capture
08-15 19:19	160m	- / -16	UT5ZC	+13 / -	2	✓ Closing fragment
08-13 19:18	160m	- / -14	RU3GF	-8 / -	2	✓ Closing fragment
08-13 19:04	160m	- / -25	YL3CW	-1 / -	2	✓ Closing fragment
08-02 19:24	160m	- / -	UA3ZNQ	+2 / -	2	Partial capture
08-02 19:22	160m	- / -20	OH5LF	+4 / -	3	Partial capture
08-02 19:21	160m	- / -	UA3ZNQ	+1 / -	2	Partial capture
08-02 18:54	160m	- / -14	RM3ZR	-1 / -	3	✓ Closing fragment
08-02 18:54	160m	- / -12	UB6OAJ	-1 / -	4	✓ Closing fragment
08-02 18:53	160m	- / -15	RD7O	-6 / -	2	✓ Closing fragment
08-02 18:27	160m	- / -21	R6ML	-10 / -	7	✓ Closing fragment
07-29 21:05	20m	- / -14	EA5IDA	-3 / -	3	✓ Closing fragment
07-21 19:06	160m	- / -19	UA6BRD	-12 / -	4	✓ Closing fragment
07-21 19:03	160m	- / -14	RA3UEV	-10 / -	6	✓ Closing fragment
07-21 18:57	160m	- / -19	R6ML	-12 / -	6	✓ Closing fragment
07-21 18:55	160m	- / -20	R3BY	-15 / -	3	✓ Closing fragment
07-21 18:54	160m	- / -	R6ML	-14 / -	2	Partial capture
07-21 18:53	160m	- / -10	UA4HJ	-8 / -	2	✓ Closing fragment
07-02 20:47	20m	- / -11	OP0WWA	-3 / -	2	✓ Closing fragment
06-29 19:30	20m	- / -	G4DBW	-6 / -	2	Partial capture
06-29 19:21	20m	- / -	RA6OD	-7 / -	2	Partial capture
06-29 19:16	20m	- / -5	UT3RO	-8 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
192145 +20  605  JH7BDS OM3PC JN88 (x3)
194415  +8 2181  JH7BDS SP7SEK -15 (x2)
194545  +3 2395  JH7BDS OH5KNL KP30 (x4)
194745  -7  954  JH7BDS SP9ENV JO74 (x3)
195300  -9 1690  JH7BDS EX7CQ -17 (x3)

40m

UTC    dB Audio  Message
204930  -5 1164  JH7BDS GW4NOO IO71 (x3)

20m

UTC    dB Audio  Message
192200  -6 2654  JH7BDS RA6OD KN97
192730  -5 2653  JH7BDS RA3BU -12
193000  -5 2470  JH7BDS G4DBW JO01 (x2)
203030  -8 2334  JH7BDS G7FSI -08
203200  -1 2495  JH7BDS GB2WWA RR73
203730  -5 1723  JH7BDS II3WWA RR73
203600 -11 2154  JH7BDS II7WWA RR73
204730  -2  520  JH7BDS OP0WWA -11 (x2)
205945 -21 2200  T77RN JH7BDS QM09
210300 -20 2187  JH7BDS IK0QDM R-09
210500  -3  367  JH7BDS EA5IDA IN90 (x3)

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