IU4PTA — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Italy Most frequent locator attributed to this token: JN54

Receiver-side FT8 activity involving IU4PTA, decoded by SO8OO in southeastern Poland. 972 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 65 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-09-12.

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 972 FT8 messages attributed to IU4PTA as the transmitting token by decoded message structure across 65 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (47%), followed by 40 m (24%) and 60 m (13%). Most decodes (78%) fell within the six-hour window 16:00-22:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11.6 dB.

Overview

972

Messages attributed

UTC dates decoded

178

Active 15-min windows

-11.6 dB

Estimated median S/N

Bands

80m · 83 60m · 128 40m · 235 20m · 459 10m · 67

First attributed message: 2026-06-10
Last attributed message: 2026-09-12 08:53 UTC

Observed FT8 message patterns

Attributed sample: 972 messages
Active dates: 65 UTC dates
Estimated median S/N: -11.6 dB
Estimated 10th-90th percentile: -19.4 to -1.9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 252, moderate (-15 to -9 dB) 388, strong (≥ -8 dB) 332.

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 IU4PTA in decoded directed-looking exchanges:

DL9KM · Fed. Rep. of Germany ×3 EC5M · Spain ×2 F1IQH · France ×2 LZ1ZF · Bulgaria ×2 VJ6X · Australia ×2 DL1IP · Fed. Rep. of Germany ×2 F1PBZ · France ×2 G8OO · England ×2 F5OZC · France ×2 IN3WZS · Italy ×2 DC7KM · Fed. Rep. of Germany DN9KK · Fed. Rep. of Germany

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 IU4PTA

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: JN54 · 435 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,013 km (approx.)
Last such locator decoded: 2026-09-12 08:53 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	IU4PTA S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-21 08:56	40m	- / -11	DG2SAT	-16 / -	3	Partial capture
09-12 09:34	40m	- / -11	DL4JCP	+5 / -	4	Partial capture
09-12 09:24	40m	- / -11	OE5ABL	-17 / -	5	✓ Closing fragment
09-12 09:07	40m	- / -8	OE3EAR	+2 / -	2	✓ Closing fragment
09-12 08:47	40m	- / -18	SP9UPH	+6 / -	2	✓ Closing fragment
09-12 08:25	40m	- / +9	IK2ZJR	-9 / -	3	✓ Closing fragment
09-12 08:24	40m	- / +4	S57CT	-6 / -	2	✓ Closing fragment
09-10 20:12	80m	-19 / -17	OE8DDX	+16 / -	3	✓ Closing observed
09-10 20:09	80m	-23 / +5	IN3WZS	-16 / +7	4	✓ Full exchange observed
09-10 20:08	80m	-6 / -13	EC5M	-14 / -	3	✓ Closing observed
09-10 20:07	80m	-14 / -	IK3/UY7LA	- / +9	2	Partial capture
09-10 20:06	80m	-24 / -	IN3WZS	-11 / +8	2	✓ Closing observed
09-10 20:04	80m	-13 / -6	DM2HEY	-11 / -	3	✓ Closing observed
09-10 19:45	160m	- / -9	PA3FR	-7 / -	4	✓ Closing fragment
09-10 19:39	160m	- / -18	DJ3JD	-10 / -	2	✓ Closing fragment
09-10 19:09	40m	-13 / -10	SV2FNT	+6 / -	3	✓ Full exchange observed
09-10 19:05	40m	+3 / -	F4LTP	- / 0	2	✓ Closing fragment
09-10 19:03	40m	+2 / +2	R73SLET	-8 / -	2	Partial capture
09-10 19:00	40m	+2 / -11	G8KHF	-3 / 0	5	✓ Full exchange observed
09-10 18:58	40m	-3 / -	ON5MX	-6 / 0	2	✓ Closing observed
09-10 18:57	40m	-4 / -	LZ1ZF	-6 / +4	4	✓ Closing observed
09-10 18:55	40m	- / -18	IQ2AAH	-2 / -	8	Partial capture
09-10 18:52	40m	-6 / -6	DJ0ABM	+4 / -	3	✓ Closing observed
09-10 18:41	40m	+3 / -5	PD0WRT	+6 / +3	4	✓ Full exchange observed
09-08 19:38	80m	-14 / -10	DK7UY	+9 / -4	3	✓ Full exchange observed
09-08 19:33	80m	-13 / -	RC9WC	- / -17	2	Partial capture
09-08 19:31	80m	- / -7	PI4DX	+14 / -	2	✓ Closing fragment
09-08 19:29	80m	-16 / -9	9A5E	+11 / -	3	✓ Closing observed
09-08 19:27	80m	-21 / -14	DF3IS	+4 / +6	4	✓ Full exchange observed
09-08 19:19	60m	- / -8	F5OZC	-6 / -	2	✓ Closing fragment
09-08 19:17	60m	-13 / -1	ER3UA	+4 / -	3	✓ Closing observed
09-08 19:15	60m	-17 / -4	F5OZC	-7 / -	3	✓ Closing observed
09-08 19:14	60m	-12 / -	IZ0MQN	-13 / -	4	✓ Full exchange observed
09-08 19:13	60m	-12 / -10	DG1KFR	-2 / +3	4	✓ Full exchange observed
09-08 19:09	60m	- / -8	DL1SRS	+1 / -	4	✓ Closing fragment
09-08 05:27	40m	-22 / -	CT7ARQ	- / -4	3	✓ Closing fragment
09-06 10:07	40m	- / -8	DK1HZ	-6 / -	2	✓ Closing fragment
09-06 09:57	40m	- / -11	DJ7BU	-18 / -	2	✓ Closing fragment
09-06 09:37	40m	- / -3	OZ7KJ/P	-2 / -	2	✓ Closing fragment
09-06 09:36	40m	- / -13	DK6WH	-11 / -	2	✓ Closing fragment
09-06 09:32	40m	- / -13	3Z25POT	-8 / -	2	Partial capture
09-06 08:43	40m	- / -	HA1ZW	-3 / -	3	Partial capture
09-06 08:43	40m	- / -	HA3HZ	-9 / -	4	✓ Closing fragment
09-06 08:35	40m	- / -14	DD7EE	-9 / -	3	✓ Closing fragment
09-06 08:26	40m	- / -13	DL9SAR	-12 / -	2	Partial capture
09-06 08:18	40m	- / +2	IU4DTV	-10 / -	2	✓ Closing fragment
09-05 04:42	40m	-10 / -	WV2M	- / -	2	✓ Closing fragment
09-05 04:38	40m	-4 / -	SP9KDA	- / +2	3	✓ Closing fragment
09-05 04:36	40m	-5 / -	SQ6FHT	- / -18	3	✓ Closing fragment
09-05 04:33	40m	-4 / -9	UT5MB	+5 / -3	4	✓ 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
092400 -18 2018  IU4PTA OE5ABL -11 (x5)
093300 -19 1357  IU4PTA ON1DGN RR73
093430  -3 1863  IU4PTA DL4JCP JO60
093500 -18 1863  IU4PTA HA7AV JN97
093500 +15 2947  IU4PTA DL4JCP R-11 (x3)
085615 -14 1043  IU4PTA DG2SAT JN48 (x3)
090415  -7 1042  IU4PTA IZ4AIF JN54

80m

UTC    dB Audio  Message
200500  -6 1567  IU4PTA DM2HEY 73
200600 -24 1504  IN3WZS IU4PTA +08
200645 -11 1504  IU4PTA IN3WZS 73
200715 -18 1901  IK3/UY7LA IU4PTA +09 (x2)
200830 -14  537  IU4PTA EC5M R-13
200845  -6  536  EC5M IU4PTA RR73
200900 -14  537  IU4PTA EC5M 73
200930 -24 1504  IN3WZS IU4PTA +07
201015 -16 1504  IU4PTA IN3WZS R+05
201030 -22 1505  IN3WZS IU4PTA RR73
201045 -16 1504  IU4PTA IN3WZS 73
201230 +10  913  IU4PTA OE8DDX R-17
201245 -19  914  OE8DDX IU4PTA RR73
201300 +21  913  IU4PTA OE8DDX 73

160m

UTC    dB Audio  Message
205100  +2 1339  IU4PTA OK1DXR R-15 (x2)
205330  +1 1615  IU4PTA OM2WQ JN88 (x3)
210700  -7  942  IU4PTA DL6II R-12 (x2)
210615  +1  624  IU4PTA DO3VE R-20
211100 -18 1252  IU4PTA EA3AKY 73
193930  -3 2061  IU4PTA DJ3JD R-18 (x2)
194515 -10 1885  IU4PTA PA3FR JO33 (x4)

60m

UTC    dB Audio  Message
191400  -2 2292  IU4PTA DG1KFR 73
191415 -13 1155  IZ0MQN IU4PTA +12
191430 -13 1156  IU4PTA IZ0MQN R+18
191445 -12 1155  IZ0MQN IU4PTA RR73
191500 -13 1155  IU4PTA IZ0MQN 73
191530  -8 1416  IU4PTA F5OZC R-04
191545 -17 1416  F5OZC IU4PTA RR73
191600  -6 1416  IU4PTA F5OZC 73
191700  +4 2435  IU4PTA ER3UA R-01
191715 -13 2437  ER3UA IU4PTA RR73
191730  +4 2435  IU4PTA ER3UA 73
191930  -4 1512  IU4PTA F5OZC R-08 (x2)
192130 -20 1341  CQ IU4PTA JN54
192545 -15 1153  IU4PTA F1IQH 73

20m

UTC    dB Audio  Message
185600 -16 1341  OK1VRV IU4PTA -09
185745  -3 1235  DH8KAM IU4PTA -06 (x2)
185915  -3 2432  EA8BUE IU4PTA -06
190100  -2 2543  YB7FII IU4PTA -15
190130  -2 2543  UR3HC IU4PTA RR73
190230  -6 1740  CQ IU4PTA JN54 (x5)
193600  +2 2548  YB7FII IU4PTA -13 (x2)
193730  +7  489  ON4AXU IU4PTA -09 (x2)

10m

UTC    dB Audio  Message
203115 -20 1833  DN9KK IU4PTA -08 (x2)
203215 -23 1833  DO6JSA IU4PTA -19
203345 -22 1833  CQ IU4PTA JN54 (x2)
203530  -2  927  F4HTA IU4PTA -01
203545  -8  927  IU4PTA F4HTA R+01
203600  +0  927  F4HTA IU4PTA RR73
203615 -12  927  IU4PTA F4HTA 73
203630 -15 2085  G1JGS IU4PTA +00 (x3)
082815 -24 1481  IU4PTA RW6HPS LN15 (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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