IZ0RPS — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Italy Most frequent locator attributed to this token: JN52

Receiver-side FT8 activity involving IZ0RPS, decoded by SO8OO in southeastern Poland. 1,154 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 59 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-18.

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 1,154 FT8 messages attributed to IZ0RPS as the transmitting token by decoded message structure across 59 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (60%), followed by 80 m (13%) and 10 m (13%). The busiest six-hour window was 15:00-21:00 UTC, containing 47% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (63%); the estimated median was -5 dB.

Overview

1,154

Messages attributed

UTC dates decoded

209

Active 15-min windows

-5 dB

Estimated median S/N

Bands

80m · 154 60m · 103 40m · 53 20m · 694 10m · 150

First attributed message: 2026-06-08
Last attributed message: 2026-09-18 06:26 UTC

Observed FT8 message patterns

Attributed sample: 1,154 messages
Active dates: 59 UTC dates
Estimated median S/N: -5 dB
Estimated 10th-90th percentile: -17 to +5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 159, moderate (-15 to -9 dB) 264, strong (≥ -8 dB) 731.

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 IZ0RPS in decoded directed-looking exchanges:

KR3Y · United States ×2 CR5VP · Portugal ×2 UA4FKT · European Russia ×2 UN8DSW · Kazakhstan ×2 EA6LU · Balearic Islands ×2 G4ZFJ · England ×2 OH7HRH · Finland ×2 SV1EKI · Greece ×2 A91LD · Bahrain CX9AU · Uruguay D2ACE · Angola FM4LV · Martinique

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 IZ0RPS

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: JN52 · 498 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,170 km (approx.)
Last such locator decoded: 2026-09-18 06:26 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	IZ0RPS S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-18 06:24	60m	-20 / -	GE7RTI	- / -8	2	✓ Closing fragment
09-01 20:41	60m	-4 / -	E74K	+6 / -	5	✓ Full exchange observed
08-31 06:16	20m	-7 / -	VK3JRL	- / -	3	Partial capture
08-31 06:15	20m	+2 / -	HK3AB	- / -13	2	✓ Closing fragment
08-31 06:12	20m	-6 / -	VK6CO	- / -	2	Partial capture
08-31 06:04	20m	- / -	F5SZB	-8 / -	4	Partial capture
08-31 06:02	20m	-3 / +8	TA4SSK	-6 / 0	13	✓ Full exchange observed
08-31 06:01	20m	- / -	TA2CAX	-7 / -	2	Partial capture
08-31 05:59	20m	+2 / -	<...>	- / -13	2	Partial capture
08-31 05:58	20m	-1 / -	VK2DYN	- / -16	2	✓ Closing fragment
08-31 05:55	20m	0 / -	<...>	- / -23	2	Partial capture
08-31 05:53	20m	-2 / -	ZL1GMW	- / -16	4	✓ Closing fragment
08-29 20:46	80m	-2 / -5	TA7D	+1 / -12	5	✓ Full exchange observed
08-29 20:43	80m	-4 / -	EI4JFB	- / -9	2	Partial capture
08-29 20:38	60m	-6 / -	DL9KM	-23 / -6	2	Partial capture
08-29 20:37	60m	0 / -5	ER1CW	-14 / -	3	✓ Closing observed
08-29 20:37	60m	-2 / -	EA6LU	- / +1	3	✓ Closing fragment
08-29 20:36	60m	-6 / -	DL9DBF	- / -1	2	✓ Closing fragment
08-29 20:34	60m	-6 / +4	ER1CW	-14 / -12	5	✓ Full exchange observed
08-29 20:31	60m	+4 / -	HB9RB	- / +3	4	✓ Closing fragment
08-29 20:30	80m	-7 / -	IS0LJG	- / -1	2	✓ Closing fragment
08-29 20:26	80m	- / -	LZ6C	0 / -	2	✓ Closing fragment
08-29 20:23	80m	-1 / -10	<...>	+5 / -	5	✓ Closing fragment
08-29 20:21	80m	+1 / -	EA6LU	-19 / -	4	✓ Closing observed
08-29 06:50	20m	-4 / -	VK3EVE	- / -	2	Partial capture
08-29 06:47	20m	-10 / -	XQ3SK	- / -	2	✓ Closing fragment
08-29 06:40	20m	- / -	R7OV	-6 / -	4	Partial capture
08-29 06:38	20m	+1 / -	R8QA	-9 / -15	3	✓ Closing observed
08-29 06:05	20m	-12 / -	VK4XK	- / -	2	Partial capture
08-29 05:57	20m	-8 / -	VK2BSA	- / -25	2	✓ Closing fragment
08-26 12:48	20m	- / -	DL1YS	+4 / -	8	Partial capture
08-26 12:46	20m	+10 / -	7X2KF	- / -13	3	✓ Closing fragment
08-12 05:27	20m	-4 / -	VK5GTS	- / -16	2	Partial capture
08-12 05:27	20m	-5 / -	ZL2JU	- / -17	3	✓ Closing fragment
08-12 05:23	20m	- / -	YO5PHL	-14 / -	2	Partial capture
08-12 05:21	20m	-13 / -	VK4MA	- / -	2	Partial capture
08-12 05:05	20m	-15 / -	ZL1RPC/P	- / -	3	Partial capture
08-12 05:03	20m	-4 / -	ZL1BQD	- / -11	3	Partial capture
08-11 20:27	20m	-2 / -	WI9D	- / -	2	Partial capture
08-11 20:25	20m	-12 / -	WV5A	- / -12	2	Partial capture
08-11 20:18	20m	+7 / -12	IS0KNG	-18 / -8	5	✓ Full exchange observed
08-11 20:16	20m	+6 / -	JA5ROH	- / -6	3	✓ Closing fragment
08-09 06:31	40m	- / -9	ON3CCM	-17 / -	3	Partial capture
08-09 06:03	20m	-10 / -	VK1KAZ	- / -21	3	✓ Closing fragment
08-09 05:53	20m	-5 / -	ZL3TX	- / -20	5	✓ Closing fragment
08-09 05:52	20m	-17 / -	YV5JLO	- / -12	3	✓ Closing fragment
08-08 20:42	20m	-18 / -5	PY5BH	-14 / -6	4	✓ Full exchange observed
08-08 20:40	60m	-5 / -2	DK7UY	0 / +8	5	✓ Full exchange observed
08-08 20:39	60m	-4 / -	G3UHU	-4 / +4	4	✓ Closing observed
08-08 20:37	60m	-3 / -11	UN7EG	-17 / -12	7	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
203800 -14 1688  IZ0RPS ER1CW R-05
203815  -3 1377  EA6LU IZ0RPS 73
203830 -23 1343  IZ0RPS DL9KM JN68
203845  +0 1377  ER1CW IZ0RPS RR73
203945  -6 1377  DL9KM IZ0RPS -06
204115  -5 1129  E74K IZ0RPS JN52
204130  +4 1130  IZ0RPS E74K +14
204145  -2 1129  E74K IZ0RPS R+17
204200  +9 1130  IZ0RPS E74K RR73
204215  -5 1129  E74K IZ0RPS 73
062245 -16 1499  CQ IZ0RPS JN52
062315 -19 1499  EA1IOK IZ0RPS -10
062415 -22 1499  GE7RTI IZ0RPS -08 (x2)
062600 -17 1542  OZ7DR IZ0RPS JN52

10m

UTC    dB Audio  Message
100115 -12  795  YH1AA IZ0RPS 73
141600  -5 2577  RW9HSB IZ0RPS JN52 (x3)
084930 -16  827  OM8FR IZ0RPS R-10
123800 -22 1599  PU2LUO IZ0RPS JN52
135145 -15 1941  CQ DX IZ0RPS JN52 (x4)
161245 -17 1095  CE3TO IZ0RPS JN52
114815 -15 2394  IZ0RPS D2ACE RR73
195030 -20 1346  <...> IZ0RPS R-17
121830  -6  985  RI1FJL IZ0RPS JN52
122200 -19 1153  LA3YNA IZ0RPS R-20

20m

UTC    dB Audio  Message
060615  -3  781  TA4SSK IZ0RPS RR73
060630  +0 1480  IZ0RPS TA4SSK R+08
060645  +1  781  TA4SSK IZ0RPS RR73
060700 -11 1480  IZ0RPS TA4SSK R+08
060700  -3  423  IZ0RPS F5SZB IN95
060730  +2 1481  IZ0RPS TA4SSK R+08
061230  -4 1579  VK6CO IZ0RPS JN52 (x2)
061430  -2 1579  CQ DX IZ0RPS JN52
061445 +18 2110  IZ0RPS R6LE LN07
061500  +3 1027  HK3AB IZ0RPS R-13 (x2)
061600  -5 1343  VK3JRL IZ0RPS JN52 (x3)

80m

UTC    dB Audio  Message
202400  +0  302  IZ0RPS <...> -10 (x3)
202600  +1 1603  IZ0RPS LZ6C +13 (x2)
203015  -7 1550  IS0LJG IZ0RPS R-01 (x2)
204345  -6 1407  EI4JFB IZ0RPS JN52 (x2)
204615  +0  596  TA7D IZ0RPS JN52
204730  +1  597  IZ0RPS TA7D -05
204745  -5  596  TA7D IZ0RPS R-12
204800  +1  596  IZ0RPS TA7D RR73
204815  +0  596  TA7D IZ0RPS 73
205115  -5 2157  RK9DO IZ0RPS JN52

40m

UTC    dB Audio  Message
191145 -16 2089  IZ0RPS ES6DO RR73
191200 -17 2089  ES6DO IZ0RPS 73
191230 -18 1985  RL2F IZ0RPS JN52 (x3)
202530 -18 1418  CR5VP IZ0RPS JN52 (x4)
202800 -17 1318  RA9ACA IZ0RPS JN52
203130  -6  309  JA5MHD IZ0RPS 73
203500 -17 2157  CX2CC IZ0RPS JN52
063130 -17 1058  IZ0RPS ON3CCM JO10 (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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