IU4PQN — 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 IU4PQN, decoded by SO8OO in southeastern Poland. 431 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 29 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-11-02.

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 431 FT8 messages attributed to IU4PQN as the transmitting token by decoded message structure across 29 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (35%), followed by 80 m (23%) and 60 m (13%). Most decodes (85%) 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 -12.3 dB.

Overview

431

Messages attributed

UTC dates decoded

Active 15-min windows

-12.3 dB

Estimated median S/N

Bands

160m · 152 80m · 97 60m · 56 40m · 36 20m · 52 10m · 38

First attributed message: 2026-06-08
Last attributed message: 2026-11-02 18:48 UTC

Observed FT8 message patterns

Attributed sample: 431 messages
Active dates: 29 UTC dates
Estimated median S/N: -12.3 dB
Estimated 10th-90th percentile: -20 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 127, moderate (-15 to -9 dB) 173, strong (≥ -8 dB) 131.

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 IU4PQN in decoded directed-looking exchanges:

DF3IS · Fed. Rep. of Germany ×2 HA7TM · Hungary ×2 EA8BBJ · Canary Islands PY5EJ · Brazil 9A2RD · Croatia 9A5E · Croatia DF8XC · Fed. Rep. of Germany DG5MLA · Fed. Rep. of Germany DL1WTW · Fed. Rep. of Germany DO1MER · Fed. Rep. of Germany DO2HG · Fed. Rep. of Germany F4EEJ · France

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 IU4PQN

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 · 244 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,013 km (approx.)
Last such locator decoded: 2026-11-02 18:48 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	IU4PQN S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-01 17:09	60m	-8 / -	OM3CPV	- / -5	2	✓ Closing fragment
11-01 17:07	80m	-6 / -	SM2LIY	- / -	2	Partial capture
10-31 18:07	60m	-4 / -	MM5DWW	- / -9	7	✓ Closing fragment
10-31 17:53	160m	-17 / -14	HA7TM	+6 / -	4	✓ Full exchange observed
10-31 17:51	160m	-22 / -	IC8FEM	- / -	2	Partial capture
10-31 17:49	160m	-22 / -	F4EEJ	- / -4	4	✓ Closing fragment
10-31 17:42	160m	-9 / -6	DG5MLA	-2 / -8	4	✓ Full exchange observed
10-31 17:41	160m	-12 / -	IK2JKM	- / -	2	Partial capture
10-31 17:39	160m	-14 / -	UN0GY	- / -	2	Partial capture
10-31 17:37	160m	-19 / -15	G4ATX	-9 / +6	4	✓ Full exchange observed
10-31 17:33	160m	- / -23	DO2HG	-6 / -	2	Partial capture
10-31 17:31	160m	-13 / -18	IW3IFJ	-8 / -	5	✓ Closing observed
10-31 17:28	160m	- / -11	DO1MER	-12 / -	2	✓ Closing fragment
10-31 16:57	160m	-19 / -11	DF3IS	+2 / -12	8	✓ Full exchange observed
10-31 16:47	160m	-22 / -	YL3CW	- / -	4	Partial capture
10-31 16:45	160m	-9 / -	RN3TT	- / -	3	Partial capture
10-24 05:29	40m	-20 / -	SP8NFO	- / +3	2	✓ Closing fragment
10-24 05:27	40m	-16 / -8	SP5EXA	-6 / -	5	✓ Full exchange observed
10-24 05:25	40m	-19 / -	KN1OBI	- / -	3	Partial capture
10-24 05:23	40m	0 / -	EU4U	- / -	3	✓ Closing fragment
10-24 04:54	160m	- / -	DL4KSD	-6 / -	3	Partial capture
10-24 04:52	160m	-9 / -	DL1WTW	-15 / -18	4	✓ Closing observed
10-20 20:23	60m	-8 / -	DJ1TU	0 / -	5	Partial capture
10-20 20:23	60m	-8 / -1	PE1NPS	0 / -	6	✓ Full exchange observed
10-20 20:21	60m	-10 / -	LA6OCA	- / +1	2	Partial capture
10-20 20:18	60m	-12 / -	SQ9LOJ	- / -5	4	Partial capture
10-20 20:15	60m	-13 / 0	DF4WQ	-10 / -	7	✓ Closing observed
10-20 20:15	60m	- / -	SQ9LOJ	-19 / -	2	Partial capture
10-20 20:14	60m	-13 / -6	OZ6VFR	-20 / -14	5	✓ Full exchange observed
10-20 20:11	60m	-12 / +2	DF3IS	-3 / +9	5	✓ Full exchange observed
10-20 20:08	60m	-15 / -7	OH1LA	-11 / -15	6	✓ Full exchange observed
10-20 20:05	60m	-15 / -4	IZ4TOA	-6 / -	2	✓ Closing observed
10-20 19:08	160m	- / -17	PI4DX	+2 / -	2	Partial capture
10-19 18:28	160m	- / -20	LA9GX	-13 / -	2	✓ Closing fragment
10-16 19:34	160m	-12 / -8	S51XA	-16 / -14	5	✓ Full exchange observed
10-16 19:31	160m	-15 / -10	9A5E	-2 / +7	5	✓ Full exchange observed
10-16 19:30	160m	- / -12	I1APQ	-2 / -	3	Partial capture
10-16 19:28	160m	- / -12	OM2WW	+7 / -	3	✓ Closing fragment
10-16 19:23	160m	-11 / -	OE3ZIO	- / -	2	Partial capture
10-16 19:23	160m	-18 / -	LA9JKA	- / -	3	Partial capture
10-16 19:22	160m	-16 / -	IZ2ZSF	- / -	2	Partial capture
10-16 19:18	160m	-5 / -11	OK4YL	+28 / -	4	✓ Closing observed
09-24 16:27	160m	- / -11	9A2AJ	+6 / -	2	Partial capture
09-24 16:22	160m	- / -15	9A2AJ	0 / -	2	Partial capture
08-26 18:14	20m	+13 / -	BI6AN	-9 / -15	5	✓ Closing observed
08-25 18:02	80m	-7 / -	DO1DPL	- / -10	2	✓ Closing fragment
08-25 18:01	80m	-8 / -	DO7AGN	-16 / -10	3	✓ Closing observed
08-24 21:48	40m	-6 / -6	SM2OTU	-11 / -	5	Partial capture
08-24 21:46	80m	-2 / -5	CT2HEX	-8 / -	4	Partial capture
08-24 18:38	160m	-12 / -	IS0JXO	- / -	6	Partial capture

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
174245  +1  406  IU4PQN DG5MLA -06
174300  -9  405  DG5MLA IU4PQN R-08
174315  -4  406  IU4PQN DG5MLA RR73
174945 -22 1840  F4EEJ IU4PQN JN54 (x4)
175145 -22 1502  IC8FEM IU4PQN JN54 (x2)
175330  +9 2095  IU4PQN HA7TM -14
175345 -18 2095  HA7TM IU4PQN R+18
175400  +3 2095  IU4PQN HA7TM RR73
175415 -16 2095  HA7TM IU4PQN 73
170315 -23 2042  IK0BAL IU4PQN JN54
185000  -7 1765  IU4PQN OZ5AGJ -12

60m

UTC    dB Audio  Message
202430  -7 2285  PE1NPS IU4PQN RR73
202445  -3 2490  IU4PQN PE1NPS 73
202500  -7 2285  DJ1TU IU4PQN +19 (x3)
180715  -3  597  MM5DWW IU4PQN JN54 (x7)
170930  -9 1177  OM3CPV IU4PQN R-05 (x2)
184815 -12 2335  LY5O IU4PQN JN54

40m

UTC    dB Audio  Message
052300  +0 2760  EU4U IU4PQN JN54 (x3)
052500 -15 2028  KN1OBI IU4PQN JN54 (x3)
052745  -5 2831  IU4PQN SP5EXA KO02
052800 -15 1869  SP5EXA IU4PQN +23
052815  -5 2831  IU4PQN SP5EXA R-08
052830 -18 1869  SP5EXA IU4PQN RR73
052845  -7 2831  IU4PQN SP5EXA 73
052900 -24 1869  CQ IU4PQN JN54
052930 -22 1870  SP8NFO IU4PQN +03 (x2)
184445 -10 1860  UW8SM IU4PQN JN54

80m

UTC    dB Audio  Message
183815 -21 2157  DO7EC IU4PQN R-17
183830 -15 2156  IU4PQN DO7EC RR73
214545 -13  962  OZ/KD0NDU IU4PQN JN54
214615  -9  702  CT2HEX IU4PQN JN54 (x2)
214730  -6  703  IU4PQN CT2HEX -05 (x2)
180100 -16  900  IU4PQN DO7AGN JO51
180115 -10 1084  DO7AGN IU4PQN -10 (x2)
180215  -9 1084  DO1DPL IU4PQN -10 (x2)
052115  +2  871  SP4KGK IU4PQN JN54
170715  -5 1054  SM2LIY IU4PQN JN54 (x2)

20m

UTC    dB Audio  Message
180115  +1 2887  IU4PQN JN1ILK RR73
180130  -8 2887  JN1ILK IU4PQN 73
180315 -13  806  IU4PQN JA1XZF -06
181145 -10  870  EX7DY IU4PQN R-14
175545 -13 1252  BU2FW IU4PQN 73
181415 +23  540  BI6AN IU4PQN JN54 (x3)
181545 -15 1657  BA4VDC IU4PQN JN54
181715 -11  539  BI6AN IU4PQN R-15
181900  -9  540  IU4PQN BI6AN RR73
165730 -12 2629  AD9GE IU4PQN JN54 (x2)
084245 -15 1455  YV5JLO IU4PQN JN54 (x2)

10m

UTC    dB Audio  Message
082130 -24 1793  LZ2CP IU4PQN JN54 (x2)
094215 -19 1963  UD8S IU4PQN JN54
185030 -21 1389  PY5EJ IU4PQN -20 (x3)
185230 -21 2005  LU6YR IU4PQN JN54
185330  -7  372  EA8BBJ IU4PQN JN54 (x3)
185730 -10  729  XQ1KK IU4PQN JN54

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

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee