IU4PTA — 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: JN54

Receiver-side FT8 activity involving IU4PTA, decoded by SO8OO in southeastern Poland. 1,434 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 85 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-11-04.

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 1,434 FT8 messages attributed to IU4PTA as the transmitting token by decoded message structure across 85 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (32%), followed by 40 m (29%) and 60 m (26%). Most decodes (76%) 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 -10.7 dB.

Overview

1,434

Messages attributed

UTC dates decoded

238

Active 15-min windows

-10.7 dB

Estimated median S/N

Bands

160m · 4 80m · 109 60m · 372 40m · 423 20m · 459 10m · 67

First attributed message: 2026-06-10
Last attributed message: 2026-11-04 14:30 UTC

Observed FT8 message patterns

Attributed sample: 1,434 messages
Active dates: 85 UTC dates
Estimated median S/N: -10.7 dB
Estimated 10th-90th percentile: -19 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 308, moderate (-15 to -9 dB) 553, strong (≥ -8 dB) 573.

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:

TA3NK · Asiatic Turkey ×3 EC5M · Spain ×2 EC3A · Spain ×2 CT7AIU · Portugal ×2 F1IQH · France ×2 F5OZC · France ×2 G3SUY · England ×2 PI4DX · Netherlands ×2 TA4SSK · Asiatic Turkey ×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 · 615 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,013 km (approx.)
Last such locator decoded: 2026-11-04 14:29 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	IU4PTA S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-04 14:29	40m	-9 / -10	DM9YL	-3 / -11	5	✓ Full exchange observed
11-02 21:13	80m	- / -	SM5WXF	-15 / -	3	Partial capture
11-02 20:55	60m	-1 / -24	EC3A	-15 / -15	4	✓ Full exchange observed
11-02 20:52	60m	-4 / +4	F5RMK	-12 / +4	4	✓ Full exchange observed
11-02 20:48	60m	-6 / -	G3SUY	-12 / -3	4	✓ Full exchange observed
11-02 20:45	60m	-6 / -	G7SWS	-13 / -11	3	✓ Closing observed
11-02 20:44	60m	+1 / -	EA5JXP	- / -16	2	Partial capture
10-30 21:15	60m	-4 / -	DB6FA	- / -3	2	✓ Closing fragment
10-30 21:12	60m	-10 / +5	ON4DS	-6 / +2	4	✓ Full exchange observed
10-30 21:12	60m	-7 / -	C5R	- / -18	4	Partial capture
10-30 21:10	60m	+4 / -	OH6FSO	- / -8	2	✓ Closing fragment
10-30 21:07	60m	-9 / -	OM8YZ	- / -13	3	Partial capture
10-30 21:06	60m	-9 / -	PA9MG	- / -20	3	✓ Closing fragment
10-26 06:03	60m	-7 / -6	DL3HBF	+4 / -	6	✓ Closing observed
10-26 06:02	60m	-8 / -	ON4DN	- / -9	2	✓ Closing fragment
10-26 06:00	60m	-15 / -3	DK2YCT	-13 / -3	5	✓ Full exchange observed
10-26 05:56	60m	-10 / -5	PE1NMM	+1 / -2	5	✓ Full exchange observed
10-26 05:50	60m	-16 / -	W1ATV	- / -10	2	Partial capture
10-26 05:42	60m	- / -8	DF4WQ	-11 / -	4	✓ Closing fragment
10-26 05:42	60m	-7 / -	F4FPR	-12 / -6	3	✓ Closing observed
10-26 05:41	60m	-24 / -	CU2DX	-2 / -	2	✓ Closing observed
10-25 20:47	60m	-22 / -21	PI4DX	-2 / -5	4	✓ Full exchange observed
10-25 20:43	60m	-8 / -	DL4DBL	- / -15	2	✓ Closing fragment
10-25 20:12	160m	- / -15	9A5E	-4 / -	4	Partial capture
10-25 20:11	160m	- / -13	SP9DWT	+6 / -	7	Partial capture
10-25 20:00	80m	-18 / +3	DO1ID	0 / -14	6	✓ Full exchange observed
10-25 19:58	80m	-15 / -16	RX3ASQ	-5 / -15	3	✓ Full exchange observed
10-25 19:56	80m	-16 / -6	OK1DBE	-15 / -7	2	Partial capture
10-25 19:53	80m	- / -	DL1UDO	-11 / -	3	Partial capture
10-25 19:49	80m	- / -	RX3ASQ	-3 / -	2	Partial capture
10-25 09:40	40m	- / -1	IQ4JO	-12 / -	2	✓ Closing fragment
10-25 09:37	40m	-22 / -4	DL8WEM	-5 / -1	5	✓ Full exchange observed
10-25 09:35	40m	- / -	SP7LPD	-8 / -	2	✓ Closing fragment
10-25 09:29	40m	- / -7	DL9EVO	-7 / -	3	✓ Closing fragment
10-24 20:15	60m	-4 / -	CT7AIU	-8 / -2	3	✓ Closing observed
10-24 20:09	60m	-14 / -	HG2DX	- / +2	2	✓ Closing fragment
10-24 20:04	60m	-10 / -	SP3SPF	- / -16	2	Partial capture
10-24 20:00	60m	-8 / -	G8DCJ	- / -16	2	✓ Closing fragment
10-24 19:58	60m	-10 / -	ON4LDZ	- / -11	2	✓ Closing fragment
10-24 19:54	40m	- / -9	LZ2CC	-12 / -	2	Partial capture
10-24 19:51	40m	-4 / -	YO3AEP	- / -16	3	✓ Closing fragment
10-24 19:46	40m	- / -6	PA7D	-4 / -	2	✓ Closing fragment
10-24 19:43	40m	-12 / -	EA3CXN	-8 / +1	7	✓ Full exchange observed
10-24 19:42	40m	-6 / -	PD5ZH	- / -15	2	Partial capture
10-24 19:40	40m	-2 / -	DK8HC/P	-10 / -11	3	✓ Closing observed
10-23 12:45	60m	-22 / -	DL1GPS	-10 / -9	3	✓ Closing observed
10-22 20:36	60m	-5 / -	SP1RKT	- / +1	2	✓ Closing fragment
10-22 20:32	60m	-6 / -8	F4GIH	-8 / -2	5	✓ Full exchange observed
10-18 10:03	40m	-15 / -	DL8UVG	-6 / -14	4	✓ Closing observed
10-08 05:14	40m	+1 / -18	G3TKT	-9 / -13	5	✓ 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
093815  -5 1938  IU4PTA DL8WEM R-04
093830 -22 1939  DL8WEM IU4PTA RR73
093845  -5 1938  IU4PTA DL8WEM 73
093930 -22 1938  CQ IU4PTA JN54
094045 -11 2595  IU4PTA IQ4JO R-01 (x2)
094200 -21 1938  CQ IU4PTA JN54
095200 -11  330  IU8RFW IU4PTA RR73
100545 -12  493  IU4PTA DG3FFM 73
205430  -9 1897  IU4PTA EX7CQ RR73
142930  -9  907  DM9YL IU4PTA JN54
142945  -4  907  IU4PTA DM9YL -10
143000 -12  907  DM9YL IU4PTA R-11
143015  -2  907  IU4PTA DM9YL RR73
143030  -6  907  DM9YL IU4PTA 73

80m

UTC    dB Audio  Message
200000 -17 1381  CQ IU4PTA JN54
200015  +1  237  IU4PTA DO1ID +03
200030 -16 1381  DO1ID IU4PTA R-14
200045  +1  237  IU4PTA DO1ID +03
200100 -15 1381  DO1ID IU4PTA R-18
200115  -1  237  IU4PTA DO1ID RR73
200130 -24 1381  DO1ID IU4PTA 73
200230 -16 1381  CQ IU4PTA JN54 (x5)
211345 -14 1003  IU4PTA SM5WXF JO87 (x3)

60m

UTC    dB Audio  Message
204830  -3 1035  G3SUY IU4PTA RR73
204845 -13  803  IU4PTA G3SUY 73
204930  +3 1035  CQ IU4PTA JN54 (x4)
205215  -3 1035  F5RMK IU4PTA +04
205230 -14 2033  IU4PTA F5RMK R+04
205245  -4 1035  F5RMK IU4PTA RR73
205300 -10 2033  IU4PTA F5RMK 73
205415  -2 1035  CQ IU4PTA JN54
205500  +3 1035  EC3A IU4PTA -15
205515 -14 1359  IU4PTA EC3A R-24
205530  -5 1035  EC3A IU4PTA RR73
205545 -16 1359  IU4PTA EC3A 73

160m

UTC    dB Audio  Message
201145  +6 1180  IU4PTA SP9DWT JN99 (x2)
201215  -4 2133  IU4PTA 9A5E R-15 (x2)
201315  +7 1180  IU4PTA SP9DWT R-13
201315  -2 2133  IU4PTA 9A5E JN75 (x2)
201415  +5 1180  IU4PTA SP9DWT R-18 (x4)
202530 -20 1003  CQ IU4PTA JN54 (x3)
203330 -13  940  DK7TX IU4PTA -09

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.

CW

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

Explore CW reception at SO8OO

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