JH2VVH — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Japan Most frequent locator attributed to this token: PM84

Receiver-side FT8 activity involving JH2VVH, decoded by SO8OO in southeastern Poland. 180 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 25 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-09.

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 180 FT8 messages attributed to JH2VVH as the transmitting token by decoded message structure across 25 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (73%), followed by 80 m (15%) and 40 m (12%). Several six-hour UTC windows tied for the largest share (98%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.

Overview

180

Messages attributed

UTC dates decoded

Active 15-min windows

-13 dB

Estimated median S/N

Bands

80m · 27 40m · 22 20m · 131

First attributed message: 2026-06-08
Last attributed message: 2026-09-09 20:48 UTC

Observed FT8 message patterns

Attributed sample: 180 messages
Active dates: 25 UTC dates
Estimated median S/N: -13 dB
Estimated 10th-90th percentile: -21 to -5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 64, moderate (-15 to -9 dB) 60, strong (≥ -8 dB) 56.

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.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with JH2VVH in decoded directed-looking exchanges:

G3RWF · England ×2 IQ7KM · Italy ×2 OH5KNL · Finland ×2 RO2X · European Russia ×2 7Q3WS · Malawi 9K2GR · Kuwait 9K2OK · Kuwait BA6IM · China BG2FYO · China BG7MOM · China CT1FIU · Portugal D2IM · Angola

Attributed messages by UTC hour

Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.

Most frequent locator attributed to JH2VVH

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: PM84 · 79 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,675 km (approx.)
Last such locator decoded: 2026-09-08 21:01 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	JH2VVH S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-15 19:39	40m	- / -	IK5ZPV	+4 / -	2	Partial capture
09-15 19:14	40m	- / -14	PI4DX	+15 / -	2	✓ Closing fragment
09-12 20:56	40m	- / -	SV1DZB	-10 / -	2	Partial capture
09-12 20:53	40m	- / 0	IK8EQG	+7 / -	3	Partial capture
09-12 20:51	40m	- / 0	OZ1AXG	+26 / -	2	✓ Closing fragment
09-12 20:47	40m	- / -10	OH5KT	+7 / -	2	✓ Closing fragment
09-11 21:16	40m	- / -	IK1LZF	+4 / -	5	Partial capture
09-11 21:15	40m	- / 0	IR0IADU	-12 / -	2	✓ Closing fragment
09-11 21:09	40m	- / -15	IK8UHA	+2 / -	2	✓ Closing fragment
09-11 21:04	40m	- / -	IK8UHA	-2 / -	3	Partial capture
09-09 20:55	40m	- / -11	DL70ESSEN	+1 / -	3	Partial capture
09-09 20:49	40m	- / -	IW3IFJ	-16 / -	2	Partial capture
09-08 20:49	40m	- / -7	TC2EYL	-4 / -	4	✓ Closing fragment
09-08 20:44	40m	- / -11	SY1BKQ	0 / -	2	Partial capture
09-05 20:49	40m	- / -23	9K2YM	-4 / -	2	Partial capture
09-03 20:31	40m	- / -9	I2VGW	+5 / -	7	Partial capture
09-03 20:26	40m	-12 / -	I2VGW	- / -	2	Partial capture
09-03 20:24	40m	-12 / -	SP5AMT	- / -17	2	✓ Closing fragment
09-03 20:23	40m	-9 / -18	IK3ERN	+14 / -	4	✓ Closing observed
09-03 20:19	40m	-18 / -22	OK1UG	+13 / -	5	✓ Closing observed
09-03 19:51	40m	- / +1	RY4D	-4 / -	2	✓ Closing fragment
08-31 16:42	40m	- / -	UR5ZR	-6 / -	2	Partial capture
08-30 07:16	10m	- / -	IU0VOG	-22 / -	3	Partial capture
08-29 13:04	20m	-17 / -15	DC6KI	+1 / -	5	✓ Closing observed
08-24 13:36	20m	-11 / -9	ON4AOI	+2 / -	3	✓ Closing observed
08-23 21:03	40m	- / -12	OK7TB	+6 / -	2	✓ Closing fragment
08-23 20:54	40m	- / -	E79HI	+1 / -	2	Partial capture
08-23 20:41	40m	- / -13	II7MGBT	-6 / -	2	Partial capture
08-23 20:36	40m	-10 / -	<...>	- / -	2	Partial capture
08-22 20:39	80m	- / -	PE1NPS	-10 / -	4	Partial capture
08-20 23:27	20m	- / -13	9K2GR	+9 / -	2	✓ Closing fragment
08-20 23:24	20m	- / +8	<...>	0 / -	2	Partial capture
08-20 19:57	80m	- / -12	UR1CCT	+17 / -	3	✓ Closing fragment
08-20 19:54	40m	- / -11	OK1VCB	+4 / -	2	✓ Closing fragment
08-20 19:50	40m	- / -4	SP8NR	-4 / -	2	✓ Closing fragment
08-20 19:45	40m	-11 / -	HF5W	+12 / -	2	✓ Closing observed
08-20 19:38	60m	- / -	SP7NC	+13 / -	3	Partial capture
08-20 19:37	40m	- / -11	F4ENK	+4 / -	2	✓ Closing fragment
08-20 19:31	40m	-17 / -11	SP9CVY	+2 / -	4	✓ Closing observed
08-20 19:30	40m	- / -	IU8TSR	+8 / -	2	Partial capture
08-20 19:29	40m	-16 / -8	UA6XT	-8 / -17	5	Partial capture
08-20 19:28	40m	- / -15	EU2NS	-4 / -	3	✓ Closing fragment
08-20 19:27	40m	-14 / -14	IK7IMO	-15 / -	6	✓ Closing observed
08-20 19:25	40m	- / -	9A2Z	-2 / -	2	Partial capture
08-20 19:25	40m	- / -	9A5TW	-6 / -	2	Partial capture
08-20 19:25	40m	- / -1	DL5SDN	+10 / -	4	✓ Closing fragment
08-20 19:22	40m	- / -14	9A7BB	-5 / -	4	✓ Closing fragment
08-20 19:19	40m	- / -8	SQ3SWJ	+6 / -	4	✓ Closing fragment
08-20 19:18	40m	- / -	EA1B	-2 / -	2	✓ Closing fragment
08-20 19:16	40m	- / -	F5PBG	-9 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
211745  +1 1268  JH2VVH IK1LZF JN44 (x2)
204730  +4 2604  JH2VVH OH5KT -10 (x2)
205130 +25 2789  JH2VVH OZ1AXG +00 (x2)
205345  +6 1140  JH2VVH IK8EQG +00 (x3)
205615  -8 2515  JH2VVH SV1DZB KM18 (x2)
191400 +15 1088  JH2VVH PI4DX -14 (x2)
193900  +1  957  JH2VVH IK5ZPV JN53 (x2)

10m

UTC    dB Audio  Message
102830 -17 2243  JH2VVH 7Q3WS -16 (x3)
071630 -23 1676  JH2VVH IU0VOG JN61 (x3)

20m

UTC    dB Audio  Message
232115 -10 1828  JH2VVH II7MGFG -08
232400  +1 1068  JH2VVH <...> +08
232430  -3 2104  JH2VVH II7MGBT -08
232430  -1 1068  JH2VVH <...> +08
232730 +11 2249  JH2VVH 9K2GR -13 (x2)
133615  +5  692  JH2VVH ON4AOI -09 (x2)
133700 -11 1960  ON4AOI JH2VVH 73
133730 -19 1959  OH6IH JH2VVH PM84
130415  +2 1331  JH2VVH DC6KI -15 (x4)
130600 -17 1964  DC6KI JH2VVH 73

80m

UTC    dB Audio  Message
200800  +2 2685  JH2VVH R3BDQ -16
200830 +11 1633  JH2VVH SP2HNF R-19
200830  +4 2684  JH2VVH R3BDQ -18
200900  +8 1633  JH2VVH SP2HNF 73
200900  +2 2684  JH2VVH R3BDQ -19 (x4)
195730 +23  623  JH2VVH UR1CCT KN69 (x3)
203900 -12 2501  JH2VVH PE1NPS JO22 (x4)

60m

UTC    dB Audio  Message
193830 +11  886  JH2VVH SP7NC JO91 (x3)

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.

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