IU5NRS — 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: JN52

Receiver-side FT8 activity involving IU5NRS, decoded by SO8OO in southeastern Poland. 129 FT8 messages attributed to this token as transmitter, on 160m, 40m, 20m, 10m, across 7 UTC dates in the available aggregate history. Observed between 2026-07-17 and 2026-11-01.

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 129 FT8 messages attributed to IU5NRS as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (47%), followed by 160 m (28%) and 20 m (17%). Several six-hour UTC windows tied for the largest share (59%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (60%); the estimated median was -6 dB.

Overview

129

Messages attributed

UTC dates decoded

Active 15-min windows

-6 dB

Estimated median S/N

Bands

160m · 36 40m · 10 20m · 22 10m · 61

First attributed message: 2026-07-17
Last attributed message: 2026-11-01 17:08 UTC

Observed FT8 message patterns

Attributed sample: 129 messages
Active dates: 7 UTC dates
Estimated median S/N: -6 dB
Estimated 10th-90th percentile: -15 to +12 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 10, moderate (-15 to -9 dB) 41, strong (≥ -8 dB) 78.

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 IU5NRS in decoded directed-looking exchanges:

OE3SGU · Austria OE8DDX · Austria OK1DXR · Czech Republic OZ1ADL · Denmark PI4DX · Netherlands SM2LIY · Sweden BG7BMG · China BG7BVI · China BH6IDD · China R2EA/P · European Russia YB3GEM · Indonesia ON1DGN · Belgium

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 IU5NRS

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 · 57 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,170 km (approx.)
Last such locator decoded: 2026-11-01 17:08 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	IU5NRS S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-01 17:06	160m	- / -	IK0BAL	-13 / -	2	Partial capture
11-01 17:06	160m	- / -4	IW4AOT	-2 / -	2	Partial capture
11-01 17:05	160m	- / -	OZ5AGJ	-16 / -	3	Partial capture
11-01 16:54	40m	-10 / -7	ON1DGN	-19 / -	5	✓ Closing observed
11-01 16:52	40m	-10 / -	YL3FW	- / -21	3	Partial capture
11-01 16:26	40m	-16 / -	TA1MP	- / -	4	Partial capture
10-31 18:46	160m	- / -	SP7QJF	+11 / -	10	Partial capture
10-31 18:43	160m	-11 / -11	SM2LIY	-14 / -	4	Partial capture
10-31 18:37	160m	-5 / 0	PI4DX	+4 / -12	5	✓ Full exchange observed
10-31 18:31	160m	-8 / -1	SM2LIY	-5 / -22	13	✓ Full exchange observed
10-31 18:29	160m	-6 / -	OK1DXR	-4 / -17	6	✓ Full exchange observed
10-31 18:25	160m	-4 / 0	OZ1ADL	+1 / -14	12	✓ Full exchange observed
10-31 18:22	160m	-2 / -	OE8DDX	- / -14	2	✓ Closing fragment
10-31 15:25	160m	- / -13	OE3SGU	-11 / -	2	✓ Closing fragment
08-21 16:09	20m	+12 / -	BH5HIE	- / -20	3	Partial capture
08-21 16:07	20m	+14 / -	BH6IDD	- / -17	4	✓ Closing fragment
08-21 16:06	20m	- / -	BG0DAP	-15 / -	2	Partial capture
08-21 16:03	20m	+13 / -	YB3GEM	- / -11	8	✓ Closing fragment
08-21 15:55	20m	+15 / -	R2EA/P	- / -9	2	✓ Closing fragment
08-21 15:54	20m	+13 / -5	BG7BMG	-15 / -6	3	✓ Full exchange observed
08-21 15:52	20m	+12 / -6	BG7BVI	-10 / -1	5	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
185115 +13 1837  IU5NRS SP7QJF KO10 (x2)
170515 -14 1205  CQ IU5NRS JN52
170530 -17 1205  IU5NRS OZ5AGJ JO47 (x2)
170600  -2 2200  IU5NRS IW4AOT -04
170600 -12 2042  IU5NRS IK0BAL JN66
170615 -21 1205  CQ IU5NRS JN52
170630 -15 1205  IU5NRS OZ5AGJ JO47
170630  -2 2200  IU5NRS IW4AOT -03
170630 -14 2041  IU5NRS IK0BAL JN66
170645 -24 1205  CQ IU5NRS JN52 (x4)

40m

UTC    dB Audio  Message
162645 -13 1244  TA1MP IU5NRS JN52 (x4)
165245  -7 1244  YL3FW IU5NRS R-21 (x3)
165445 -11 1244  ON1DGN IU5NRS JN52
165500 -17 1337  IU5NRS ON1DGN -07
165515 -10 1244  ON1DGN IU5NRS JN52
165600 -21 1337  IU5NRS ON1DGN RR73
165615  -9 1244  ON1DGN IU5NRS 73

20m

UTC    dB Audio  Message
160400 +16 2152  YB3GEM IU5NRS JN52 (x6)
160645 -14  326  IU5NRS BG0DAP NN33 (x2)
160730 +14 2152  BH6IDD IU5NRS -17 (x4)
160930 +13 2152  BH5HIE IU5NRS -20 (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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