OZ4VV — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Denmark Most frequent locator attributed to this token: JO46

Receiver-side FT8 activity involving OZ4VV, decoded by SO8OO in southeastern Poland. 167 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, across 10 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-16.

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 167 FT8 messages attributed to OZ4VV as the transmitting token by decoded message structure across 10 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (54%), followed by 160 m (36%) and 60 m (7%). Several six-hour UTC windows tied for the largest share (87%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (62%); the estimated median was -5 dB.

Overview

167

Messages attributed

UTC dates decoded

Active 15-min windows

-5 dB

Estimated median S/N

Bands

160m · 60 80m · 90 60m · 12 40m · 5

First attributed message: 2026-06-07
Last attributed message: 2026-09-16 23:17 UTC

Observed FT8 message patterns

Attributed sample: 167 messages
Active dates: 10 UTC dates
Estimated median S/N: -5 dB
Estimated 10th-90th percentile: -18 to +9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 28, moderate (-15 to -9 dB) 36, strong (≥ -8 dB) 103.

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 OZ4VV in decoded directed-looking exchanges:

RI1FJL · Franz Josef Land ×2 N4SIX · United States ×2 TA8AT · Asiatic Turkey ×2 WA6VZN · United States ×2 MM0HVU · Scotland ER3UA · Moldova EW2RA · Belarus G0TSM/P · England DK8HC · Fed. Rep. of Germany DL3HN · Fed. Rep. of Germany DL9KM · Fed. Rep. of Germany EA5HM · Spain

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 OZ4VV

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: JO46 · 79 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,118 km (approx.)
Last such locator decoded: 2026-09-16 23:17 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	OZ4VV S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-16 23:17	160m	+2 / -	RI1FJZ	- / -	2	Partial capture
09-16 22:04	160m	-7 / -	RI1FJZ	- / -13	21	Partial capture
09-16 19:29	160m	-19 / -	RI1FJZ	- / -	7	Partial capture
09-16 00:48	80m	-2 / -	F4FPR	- / -13	3	✓ Closing fragment
09-16 00:46	80m	0 / -	OD5SB	-13 / -18	5	✓ Closing observed
09-16 00:43	80m	-1 / -	RI1FJZ	- / -11	5	✓ Closing fragment
09-13 22:16	80m	+6 / -	RA0SCA	- / -	3	Partial capture
09-13 22:05	80m	+9 / -6	UB0SMX/P	-16 / -13	5	✓ Full exchange observed
09-13 18:42	60m	+9 / -	TF4CU	- / -	3	Partial capture
09-12 18:42	60m	-2 / -	G0TSM/P	- / -5	2	✓ Closing fragment
09-09 23:45	80m	-5 / -23	RA3TVW	-11 / -2	9	✓ Full exchange observed
09-09 23:40	80m	-16 / -16	UR7FM	-3 / -10	7	✓ Full exchange observed
09-09 00:03	80m	+10 / -	UA3IDQ	- / -18	3	✓ Closing fragment
09-08 23:58	80m	+6 / -11	G8OO	-4 / -11	12	✓ Full exchange observed
09-08 23:57	80m	+11 / +10	VO1NC	-13 / -7	4	✓ Full exchange observed
09-08 18:56	60m	-16 / -7	EW2RA	-5 / -2	6	✓ Full exchange observed
09-08 18:54	60m	-4 / -8	ER3UA	0 / 0	4	✓ Full exchange observed
09-07 23:54	80m	+3 / -14	N4SIX	-20 / -13	12	✓ Full exchange observed
09-07 23:50	80m	+1 / -8	DL3HN	+10 / -9	8	✓ Full exchange observed
09-07 23:48	80m	+1 / -16	WA6VZN	-14 / -12	9	✓ Full exchange observed
09-07 23:45	80m	-3 / -	ZP5DBC	- / -	3	Partial capture
09-07 23:34	80m	-16 / -16	SM7TZK	+8 / 0	6	✓ Full exchange observed
09-03 22:30	160m	-14 / -	MM0HVU	- / -6	2	✓ Closing fragment
09-03 22:25	160m	-12 / -	RI1FJL	- / -14	11	✓ Closing fragment
09-03 22:14	160m	-14 / -	RI1FJL	- / -	4	Partial capture
09-03 21:58	160m	-18 / -	RI1FJL	- / -	13	Partial capture
08-26 01:29	80m	+12 / -2	DL9KM	0 / -8	5	✓ Full exchange observed
08-26 01:27	80m	+7 / -	VE3LWY	-21 / -8	4	✓ Closing observed
08-26 01:25	80m	+5 / -6	EA5HM	0 / -2	5	✓ Full exchange observed
08-26 01:24	80m	+11 / -	UW5ESX	-10 / -11	4	✓ Closing observed
08-26 01:15	80m	-13 / -	K8YE	- / -12	2	✓ Closing fragment
08-26 01:13	80m	-8 / -	K4BQP/4	- / +4	2	Partial capture
08-26 01:11	80m	-1 / -	N9JR	- / -11	3	Partial capture
08-26 01:07	80m	-4 / -	TA8AT	-18 / -19	8	✓ Closing observed
08-26 01:06	80m	-3 / -5	DK8HC	+8 / -1	8	✓ Full exchange observed
08-26 01:06	80m	- / -16	K4BQP/4	-22 / -	2	Partial capture
08-26 01:04	80m	-6 / -	RI1FJL	- / -16	5	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
220915  -5 2065  RI1FJZ OZ4VV R-13 (x15)

80m

UTC    dB Audio  Message
221630  +1  469  RA0SCA OZ4VV JO46 (x2)
004345  +2 1006  RI1FJZ OZ4VV JO46 (x5)
004645  -2 1006  OD5SB OZ4VV JO46 (x3)
004800 -13 1006  OZ4VV OD5SB RR73
004815  -1 1006  OD5SB OZ4VV 73
004845  -1 1006  F4FPR OZ4VV -13 (x3)

60m

UTC    dB Audio  Message
185445  -3 2435  ER3UA OZ4VV R+00
185500  -2 2435  OZ4VV ER3UA RR73
185515  -5 2435  ER3UA OZ4VV 73
185600 -18 1629  EW2RA OZ4VV JO46 (x2)
185715  -4 1629  OZ4VV EW2RA -07
185730 -15 1630  EW2RA OZ4VV R-02
185745  -6 1629  OZ4VV EW2RA RR73
185800 -15 1630  EW2RA OZ4VV 73
184245  -3  729  G0TSM/P OZ4VV R-05 (x2)
183630  -9 1130  TF4CU OZ4VV JO46 (x4)

20m

UTC    dB Audio  Message
164530 -16  585  OZ4VV RI1FJL +08

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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