ON7VZ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Belgium Most frequent locator attributed to this token: JO10

Receiver-side FT8 activity involving ON7VZ, decoded by SO8OO in southeastern Poland. 1,009 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 36 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-14.

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 1,009 FT8 messages attributed to ON7VZ as the transmitting token by decoded message structure across 36 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (37%), followed by 40 m (28%) and 10 m (16%). Most decodes (64%) fell within the six-hour window 18:00-00:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9.2 dB.

Overview

1,009

Messages attributed

UTC dates decoded

138

Active 15-min windows

-9.2 dB

Estimated median S/N

Bands

160m · 24 80m · 53 60m · 124 40m · 279 20m · 371 10m · 158

First attributed message: 2026-06-06
Last attributed message: 2026-09-14 18:29 UTC

Observed FT8 message patterns

Attributed sample: 1,009 messages
Active dates: 36 UTC dates
Estimated median S/N: -9.2 dB
Estimated 10th-90th percentile: -17 to +1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 172, moderate (-15 to -9 dB) 367, strong (≥ -8 dB) 470.

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 ON7VZ in decoded directed-looking exchanges:

HA7TM · Hungary ×2 UX2SB · Ukraine ×2 UX7QV · Ukraine ×2 F5RRS · France ×2 EB3JT · Spain ×2 IQ4JO · Italy ×2 OE8DDX · Austria ×2 TA3ZGR · Asiatic Turkey ×2 F1IQH · France ×2 OK2USB · Czech Republic ×2 SE7LH · Sweden ×2 CE2EP · Chile

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 ON7VZ

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: JO10 · 239 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,335 km (approx.)
Last such locator decoded: 2026-09-14 18:29 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	ON7VZ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-14 18:29	40m	-8 / -	HA0DS	+1 / -	2	✓ Closing observed
09-14 18:27	40m	-10 / 0	S57AJ	-4 / -	2	Partial capture
09-14 18:22	40m	- / -7	DK5DW	-1 / -	6	✓ Closing fragment
09-14 18:20	40m	-5 / -	DK1ZB	- / -14	2	Partial capture
09-14 18:19	40m	- / -	OM3PR	0 / -	2	Partial capture
09-14 18:19	40m	0 / -	DL6ZOG	0 / -5	3	✓ Closing observed
09-14 18:12	40m	-2 / -	F4NEM/P	- / -	5	Partial capture
09-14 18:09	40m	-5 / -11	DL6UM	-1 / -7	3	Partial capture
09-14 18:01	40m	-2 / -	DL/PG1N	- / -5	2	Partial capture
09-08 21:47	60m	-2 / 0	DL7ARV	-17 / -2	7	✓ Full exchange observed
09-08 21:43	60m	-4 / -23	VE1YX	-17 / -12	18	✓ Full exchange observed
09-08 21:42	60m	0 / -	F1IQH	-8 / -5	5	✓ Closing observed
09-08 21:39	60m	-2 / -3	EA1IOK	-7 / +3	6	✓ Full exchange observed
09-08 21:37	60m	0 / -2	OE8DDX	-8 / +2	6	✓ Full exchange observed
09-08 21:37	60m	-2 / -9	EB3JT	-10 / 0	7	✓ Full exchange observed
09-08 21:35	60m	-2 / -	HA8BE	- / -	3	✓ Closing fragment
08-30 01:43	160m	-9 / -6	SP5ES	+18 / -	12	✓ Closing observed
08-30 01:39	160m	-6 / -	SP2HNF	- / -	2	Partial capture
08-30 01:37	160m	-9 / -	DL1HDL	- / -	4	Partial capture
08-30 01:35	160m	-6 / -	DL1RWN	- / -	4	Partial capture
08-27 15:01	40m	-16 / +6	DG9MHZ/P	-19 / -	3	✓ Closing observed
08-27 14:59	40m	-17 / -	2E0GSF	- / -12	2	✓ Closing fragment
08-27 14:22	20m	+3 / -5	SV1CQN	-14 / +7	4	✓ Full exchange observed
08-27 14:17	20m	+3 / -20	PD3LKN	-8 / -18	16	✓ Full exchange observed
08-27 14:15	20m	+2 / -	DM8ITZ/P	- / -	5	Partial capture
08-27 08:24	20m	+12 / -	VK7RM	- / -	5	Partial capture
08-27 08:17	20m	+11 / -	LZ7VV	- / -	3	Partial capture
08-26 20:15	20m	-1 / -	DL1R	+5 / +2	14	Partial capture
08-26 20:15	20m	- / -11	DM5WGL	+2 / -	2	✓ Closing fragment
08-25 23:51	40m	+1 / -	SP6EFY	- / -3	2	✓ Closing fragment
08-25 23:51	40m	+4 / -7	R9OAE	-7 / -13	6	✓ Full exchange observed
08-25 23:49	40m	-2 / -	PV8AJ	- / -8	3	✓ Closing fragment
08-25 23:42	40m	-3 / -	OA4ENG	- / -23	5	Partial capture
08-25 23:37	40m	0 / -	TN8GD	- / -12	6	✓ Closing fragment
08-25 23:36	40m	+2 / -	OA4ENG	- / -	4	Partial capture
08-24 16:32	40m	-8 / -	DG4BBK	- / -	5	Partial capture
08-23 16:23	20m	- / -16	RU3QR	-12 / -	3	✓ Closing fragment
08-23 16:20	20m	-8 / -11	UA4AEU	-16 / -16	7	✓ Full exchange observed
08-23 16:16	20m	-8 / -	SP9HWD	- / -3	2	✓ Closing fragment
08-23 16:11	20m	-12 / -	F4BYA	+2 / -	2	✓ Closing observed
08-23 16:01	40m	-10 / -	<...>	- / -	3	Partial capture
08-23 15:56	20m	-4 / -4	9H4CM	-17 / -7	5	Partial capture
08-21 19:58	10m	-12 / -	CE3OQA	- / -	3	Partial capture
08-21 19:54	10m	-12 / -	CX3AS	- / -12	2	✓ Closing fragment
08-21 19:52	10m	-10 / -	PY5TD	- / -15	5	✓ Closing fragment
08-21 19:50	10m	-12 / -	EB5RCA	- / -16	2	✓ Closing fragment
08-21 19:48	10m	-8 / -	YO6LM	- / -19	3	Partial capture
08-21 19:47	10m	-11 / -	EB5RCA	- / -16	2	Partial capture
08-21 19:46	10m	-10 / -	LY3CY	- / -7	2	✓ Closing fragment
08-21 19:44	10m	-7 / -	EA3ISZ	- / -1	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
182015  +1 1166  ON7VZ OM3PR JN87
182015  +0 1643  ON7VZ DL6ZOG 73
182030  -7 1163  DK1ZB ON7VZ -14 (x2)
182215  +1  989  ON7VZ DK5DW JN68 (x6)
182700 -10 1164  S57AJ ON7VZ JO10
182715  -4 1328  ON7VZ S57AJ +00
182900  -8 1164  HA0DS ON7VZ JO10
182945  +1 2582  ON7VZ HA0DS RR73
183045  +0  512  ON7VZ F1DSZ JN06

60m

UTC    dB Audio  Message
214730 -19 2129  ON7VZ DL7ARV JO62
214745  -3 1138  VE1YX ON7VZ R-07
214800 -16 1135  ON7VZ VE1YX FN74
214800 -15 2129  ON7VZ DL7ARV JO62
214815  -3 1138  DL7ARV ON7VZ -02
214830 -17 2129  ON7VZ DL7ARV R+00
214845  -1 1247  DL7ARV ON7VZ RR73
214900 -18 2129  ON7VZ DL7ARV 73
214915  +0 1247  VE1YX ON7VZ -06 (x3)
215030 -19 1244  ON7VZ VE1YX R-21
215045  -8 1247  VE1YX ON7VZ RR73
215100 -16 1245  ON7VZ VE1YX 73
215115  -2 1247  CQ ON7VZ JO10

160m

UTC    dB Audio  Message
013930  -6 1414  SP2HNF ON7VZ JO10 (x2)
014100 -10 1414  DL1RWN ON7VZ JO10
014300 -12 1408  SP5ES ON7VZ JO10 (x2)
014345 +19  389  ON7VZ SP5ES -06
014400  -7 1408  SP5ES ON7VZ R JO10
014415 +16  389  ON7VZ SP5ES -04
014430  -5 1408  SP5ES ON7VZ R JO10
014445 +21  389  ON7VZ SP5ES -04
014500  -5 1409  SP5ES ON7VZ R JO10
014515 +18  389  ON7VZ SP5ES -04
014530 -16 1408  SP5ES ON7VZ R JO10 (x2)
014615 +18  389  ON7VZ SP5ES 73

20m

UTC    dB Audio  Message
142030  -5 1352  ON7VZ PD3LKN R-20
142045  -2 1222  PD3LKN ON7VZ -18
142100  -5 1352  ON7VZ PD3LKN R-20 (x2)
142145  -2 1223  CQ ON7VZ JO10
142200 -10 1352  ON7VZ PD3LKN R-20
142215  +6 1285  CQ ON7VZ JO10
142245  +5 1285  SV1CQN ON7VZ JO10
142300  -9 1352  ON7VZ PD3LKN R-20
142330 -14 1895  ON7VZ SV1CQN -05
142345  +4 1285  SV1CQN ON7VZ R+07
142400  -9 1352  ON7VZ PD3LKN R-20
142415  +0 1285  SV1CQN ON7VZ 73
142545  +8 1285  PD3LKN ON7VZ RR73
142615  +3 1285  GM3DRA ON7VZ JO10

10m

UTC    dB Audio  Message
195215 -13 1207  PY5TD ON7VZ -15 (x4)
195415 -13 1207  CX3AS ON7VZ R-12 (x2)
195515 -16 1207  CQ ON7VZ JO10
195545  -9 1207  PY5TD ON7VZ RR73
195615 -11 1207  CQ ON7VZ JO10 (x4)
195845  -6 1207  CE3OQA ON7VZ JO10 (x3)

80m

UTC    dB Audio  Message
221700  +6 1838  ON7VZ DL1AOB 73
221715  -1 1182  HA7TM ON7VZ +00
221730 +13 1182  ON7VZ HA7TM R-06
221730  +1 1838  ON7VZ DL1AOB -07
221745  -7 1182  HA7TM ON7VZ RR73
221800 +11 1182  ON7VZ HA7TM 73
221815  -6 1182  DL1UDO ON7VZ +12 (x4)
211100  -2 2010  ON7VZ TF3VS R-20 (x2)
211300  +2  802  ON7VZ DO5UH/P R-07 (x2)
212800  -8 1142  ON7VZ SE7LH 73

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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