IZ5VTJ — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Italy Most frequent locator attributed to this token: JN53

Receiver-side FT8 activity involving IZ5VTJ, decoded by SO8OO in southeastern Poland. 92 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 18 UTC dates in the available aggregate history. Observed between 2026-07-04 and 2026-09-15.

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 92 FT8 messages attributed to IZ5VTJ as the transmitting token by decoded message structure across 18 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (50%), followed by 10 m (39%) and 40 m (10%). Most decodes (54%) fell within the six-hour window 06:00-12:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -15 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-15 dB

Estimated median S/N

Bands

80m · 1 40m · 9 20m · 46 10m · 36

First attributed message: 2026-07-04
Last attributed message: 2026-09-15 15:42 UTC

Observed FT8 message patterns

Attributed sample: 92 messages
Active dates: 18 UTC dates
Estimated median S/N: -15 dB
Estimated 10th-90th percentile: -21 to -3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 43, moderate (-15 to -9 dB) 30, strong (≥ -8 dB) 19.

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 IZ5VTJ in decoded directed-looking exchanges:

RN6MA · European Russia ×2 ER3CT · Moldova ×2 F1PBZ · France ×2 CA6SNT · Chile DN9AD · Fed. Rep. of Germany DN9KB · Fed. Rep. of Germany F1TXI · France LZ3SU · Bulgaria PF7DKW · Netherlands SP2DPK · Poland UX2SB · Ukraine 9K2YM · Kuwait

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 IZ5VTJ

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: JN53 · 24 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,089 km (approx.)
Last such locator decoded: 2026-09-15 15:42 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	IZ5VTJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-31 14:26	20m	- / -	PA7ZZ	+9 / -	2	Partial capture
08-27 17:07	40m	-9 / +2	OE5ROR	+10 / +4	6	✓ Full exchange observed
08-27 17:07	40m	0 / -11	F1PBZ	-6 / 0	4	✓ Full exchange observed
08-27 16:32	20m	- / -6	G4UJS	0 / -	2	Partial capture
08-27 06:57	20m	+2 / -	EC5M	- / -10	2	✓ Closing fragment
08-27 06:54	20m	- / -	TA3F	-21 / -	3	Partial capture
08-26 21:50	20m	- / -23	9K2YM	+14 / -	2	✓ Closing fragment
08-25 12:26	20m	- / -	TA3F	-12 / -	2	Partial capture
08-25 12:21	20m	- / -	TA3F	-10 / -	2	Partial capture
08-25 11:56	20m	-14 / -	ER3CT	- / -10	2	✓ Closing fragment
08-25 07:49	20m	- / +8	F1PSX	0 / -	3	✓ Closing fragment
08-23 13:33	20m	- / -10	F1THK	+6 / -	2	✓ Closing fragment
08-22 08:39	10m	-18 / -	DN9KB	- / 0	2	✓ Closing fragment
08-21 16:52	40m	- / -8	DL1IP	-10 / -	3	✓ Closing fragment
08-19 20:26	80m	- / -	UA4FKT	+10 / -	3	Partial capture
08-19 20:23	80m	- / -1	DO1DMR	-3 / -	8	✓ Closing fragment
08-19 20:22	80m	- / -3	SV1EKI	-3 / -	6	✓ Closing fragment
08-19 12:48	10m	-5 / -	YB1EWD	- / 0	3	Partial capture
08-19 12:43	10m	-9 / -	UX2SB	- / -	3	✓ Closing fragment
08-17 06:18	20m	- / -10	HB9ACA	-6 / -	3	Partial capture
08-10 17:56	20m	-20 / -	HA3TBL	- / -4	2	Partial capture
08-10 17:55	20m	-20 / -	CT2IGO	- / -11	2	✓ Closing fragment
08-08 08:02	20m	- / -21	PD3LKN	-8 / -	7	✓ Closing fragment
08-04 19:47	80m	- / -	HA7TM	+12 / -	3	Partial capture
08-04 17:03	40m	- / -	HF5A	-9 / -	4	Partial capture
08-04 16:19	20m	- / -	DL1UDO	-12 / -	2	Partial capture
08-04 13:07	20m	- / -	PD1ADA	-15 / -	2	Partial capture
08-04 12:57	20m	- / -7	EB3JT	-12 / -	6	Partial capture
08-04 12:56	20m	- / -12	UT7UJ	+4 / -	5	Partial capture
08-03 14:18	20m	-20 / -7	RC5F	-14 / -	3	✓ Closing observed
08-03 06:10	40m	- / -16	OE6GBG	-11 / -	2	✓ Closing fragment
08-03 05:52	40m	- / -	DL9KM	-18 / -	4	Partial capture
08-03 05:40	40m	- / -	PA3CPS	-18 / -	2	Partial capture
08-01 15:01	20m	- / -13	M0IEP	-15 / -	3	✓ Closing fragment
08-01 07:10	20m	- / -16	R4FES	-17 / -	3	Partial capture
07-31 15:02	20m	- / -	PD3LKN	-15 / -	2	Partial capture
07-30 20:40	20m	-11 / -4	M8KKH	-6 / -	3	✓ Closing observed
07-30 16:16	20m	- / -5	F1PBZ	-8 / -	2	✓ Closing fragment
07-30 09:31	10m	-14 / -	SP2DPK	- / -5	2	✓ Closing fragment
07-30 09:27	10m	-12 / -	DN9SGE	- / -2	2	Partial capture
07-30 09:25	10m	-4 / -	DN9AD	- / +1	2	✓ Closing fragment
07-30 09:24	10m	-11 / -	PF7DKW	- / -2	2	✓ Closing fragment
07-30 09:23	10m	-10 / -	LZ3SU	- / +5	2	✓ Closing fragment
07-30 09:20	10m	-16 / -	PF7DKW	- / +2	2	Partial capture
07-30 09:18	10m	-14 / -6	RN6MA	0 / -1	4	✓ Full exchange observed
07-30 09:17	10m	-17 / -	F1TXI	- / +2	2	✓ Closing fragment
07-29 17:02	20m	-14 / -	R2AL	-17 / -	4	Partial capture
07-29 17:01	20m	-24 / -	EA7FMI	- / -4	2	✓ Closing fragment
07-29 16:52	20m	-18 / +3	RN6MA	-10 / -5	6	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
170730  -1  490  F1PBZ IZ5VTJ R+00
170745 +12  693  IZ5VTJ OE5ROR JN78
170745  -8  489  IZ5VTJ F1PBZ RR73
170800  +2  490  F1PBZ IZ5VTJ 73
170815 +11  693  IZ5VTJ OE5ROR JN78
170830  -9  693  OE5ROR IZ5VTJ +04
170845  +5  693  IZ5VTJ OE5ROR R+02
170900  -9  692  OE5ROR IZ5VTJ RR73
170915 +10  693  IZ5VTJ OE5ROR 73
064430 -14 1190  CQ IZ5VTJ JN53 (x4)
155030 -10  838  IZ5VTJ II9IAGM R-05
155100  -9  838  IZ5VTJ RR73; DL8GG <...> -02

20m

UTC    dB Audio  Message
065045  +0 1393  CQ IZ5VTJ JN53 (x3)
065200  +9 1392  IZ5VTJ PA3CPS JO32
065215  +1 1393  CQ IZ5VTJ JN53 (x2)
065400 -24 1393  IZ5VTJ TA3F (x3)
065745  +3 1107  EC5M IZ5VTJ -10 (x2)
163230  +2 1388  IZ5VTJ G4UJS -06 (x2)
142615  +7  527  IZ5VTJ PA7ZZ JO22 (x2)

10m

UTC    dB Audio  Message
190130 -12 1072  CA6SNT IZ5VTJ +00 (x2)
190915 -18 1071  PP5HR IZ5VTJ +01
124345 -11 1072  UX2SB IZ5VTJ RR73 (x3)
124845  -3 1071  YB1EWD IZ5VTJ +00 (x4)
145300 -19 1458  9J2FI IZ5VTJ +01
083915 -18 1405  DN9KB IZ5VTJ +00 (x2)
084545 -18 1405  SP6CJE IZ5VTJ R-10
084715 -23 1405  SP1LON IZ5VTJ -09

80m

UTC    dB Audio  Message
202400  -2 2406  IZ5VTJ SV1EKI R-03
202400  -2 2004  IZ5VTJ DO1DMR JO40
202430  -4 2406  IZ5VTJ SV1EKI R-03
202430  -4 2004  IZ5VTJ DO1DMR JO40
202500  -5 2406  IZ5VTJ SV1EKI R-03
202500  -5 2004  IZ5VTJ DO1DMR R-01
202530  -2 2406  IZ5VTJ SV1EKI R-03
202530  -5 2004  IZ5VTJ DO1DMR R+04
202600  -1 2406  IZ5VTJ SV1EKI 73
202600  -5 2004  IZ5VTJ DO1DMR R-02
202630 +10 1046  IZ5VTJ UA4FKT LO23
202630  -8 2004  IZ5VTJ DO1DMR 73
202700  +9 1046  IZ5VTJ UA4FKT LO23 (x2)
202815  -7 1046  SV1EKI IZ5VTJ RR73

60m

UTC    dB Audio  Message
194100  -1 1158  IZ5VTJ <...> -11

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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