N4IRT — 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: United States Most frequent locator attributed to this token: FM08

Receiver-side FT8 activity involving N4IRT, decoded by SO8OO in southeastern Poland. 57 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-23 and 2026-09-08.

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 57 FT8 messages attributed to N4IRT as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (75%), followed by 20 m (25%). Most decodes (100%) fell within the six-hour window 23:00-05:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -16 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-16 dB

Estimated median S/N

Bands

40m · 43 20m · 14

First attributed message: 2026-06-23
Last attributed message: 2026-09-08 03:38 UTC

Observed FT8 message patterns

Attributed sample: 57 messages
Active dates: 5 UTC dates
Estimated median S/N: -16 dB
Estimated 10th-90th percentile: -21 to -11 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 29, moderate (-15 to -9 dB) 26, strong (≥ -8 dB) 2.

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 N4IRT in decoded directed-looking exchanges:

RZ6L · European Russia ×2 CE3TSK · Chile IZ8EYN · Italy OK2CNI · Czech Republic W4EIS · United States A41KB · Oman DJ9BX · Fed. Rep. of Germany EA7LIC · Spain F4DIA · France HB9EFK · Switzerland HI3JCC · Dominican Republic HK3YL · Colombia

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 N4IRT

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: FM08 · 16 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,510 km (approx.)
Last such locator decoded: 2026-09-08 03:24 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	N4IRT S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-06 23:21	80m	- / -17	CT7AUT	-6 / -	4	✓ Closing fragment
10-05 01:59	40m	- / -	F5PBG	-14 / -	2	Partial capture
10-05 01:54	40m	- / -10	PF7DKW	+4 / -	2	✓ Closing fragment
10-02 02:47	80m	- / -19	UT7EV	+8 / -	2	✓ Closing fragment
10-02 02:44	80m	- / -18	OR7K	+8 / -	2	✓ Closing fragment
10-02 02:41	80m	- / -17	EC5M	-7 / -	3	✓ Closing fragment
10-02 02:31	40m	- / -22	UB6OFG	0 / -	5	Partial capture
10-02 02:26	40m	- / -13	DJ9BX	0 / -	2	✓ Closing fragment
09-15 23:06	40m	- / -5	PI4DX	-10 / -	2	✓ Closing fragment
09-08 03:26	40m	- / -10	HB10GBT	-11 / -	6	Partial capture
09-08 03:26	40m	- / -1	LZ3RG	-12 / -	6	✓ Closing fragment
09-08 03:20	40m	-20 / -12	UT2AU	+2 / -	5	✓ Closing observed
09-08 03:11	40m	- / -3	LZ7VV	+10 / -	2	✓ Closing fragment
09-08 03:11	40m	- / -	UA6AKW	-16 / -	2	Partial capture
09-08 03:09	40m	-22 / -	UR3CFC	- / -12	2	Partial capture
09-08 03:02	40m	- / -15	IK6DLK	-22 / -	3	✓ Closing fragment
09-08 02:57	40m	-20 / -	PE1NPS	- / -6	2	Partial capture
09-08 02:55	40m	-23 / -18	RZ6L	0 / -	7	✓ Closing observed
09-08 02:53	40m	-18 / -20	IW2MYH	-4 / -4	8	✓ Full exchange observed
09-08 02:53	40m	-16 / -17	UA6BGM	-8 / -13	6	✓ Full exchange observed
09-08 02:53	40m	- / -	UR4QWW	-15 / -	6	Partial capture
09-08 02:52	40m	-14 / -	UR3HC	-9 / -7	4	✓ Closing observed
09-08 02:51	40m	-17 / -	SP5LST	- / -1	2	✓ Closing fragment
09-08 02:50	40m	-8 / -	IK6DLK	-24 / -16	2	Partial capture
09-08 02:49	40m	-13 / -23	UT5ZC	-2 / -	4	✓ Closing observed
09-07 01:59	40m	-10 / -4	R4ZZ	-12 / -13	12	✓ Full exchange observed
09-07 01:57	40m	- / -	R7BN	+3 / -	4	Partial capture
09-07 01:55	40m	-12 / -	A41KB	-8 / -3	3	✓ Closing observed
09-07 01:50	40m	-12 / -	A61DD	- / -	2	Partial capture
09-07 01:46	40m	-12 / -	F5PBG	-4 / -18	4	Partial capture
09-07 01:45	40m	-14 / -	HI3JCC	- / +2	2	✓ Closing fragment
09-07 01:42	40m	-14 / -	HK3YL	- / -1	2	✓ Closing fragment
09-07 01:36	40m	-15 / -	W8WMU	- / -	4	Partial capture
09-07 01:32	40m	-14 / -4	PV8AJ	-6 / -	3	✓ Full exchange observed
09-04 04:30	40m	- / -16	F4IFO	-9 / -	11	Partial capture
09-04 04:28	40m	- / -7	S57SWR	-6 / -	2	✓ Closing fragment
08-31 06:16	40m	- / -9	F4DIA	-2 / -	2	✓ Closing fragment
08-28 23:56	20m	-20 / -	<...>	- / -	2	Partial capture
08-28 23:54	20m	-16 / -	PD0JLA	- / -	2	Partial capture
08-28 23:47	20m	-22 / 0	OK2CNI	-10 / -	3	✓ Closing observed
08-28 23:45	20m	-18 / -	IZ8EYN	- / -3	2	✓ Closing fragment
08-28 23:45	20m	-18 / -	W4EIS	- / +6	2	✓ Closing fragment
08-28 23:43	20m	-18 / -	CE3TSK	- / +4	2	✓ Closing fragment
08-11 22:11	40m	- / -22	SP6JIU	+7 / -	2	✓ Closing fragment
08-11 05:58	40m	- / -	OZ6G	-5 / -	3	✓ Closing fragment
08-11 05:56	40m	- / -8	G5TV	-6 / -	2	Partial capture
08-11 05:49	40m	- / -	HB9CXZ	-18 / -	2	Partial capture
08-11 05:45	40m	- / -11	HB9EFK	-7 / -	2	✓ Closing fragment
08-04 00:13	40m	- / -16	EA7LIC	-11 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
024130  -4 1892  N4IRT EC5M -17 (x3)
024400  +7 2002  N4IRT OR7K -18 (x2)
024700  +7 2365  N4IRT UT7EV -19 (x2)
232100  -3 1493  N4IRT CT7AUT -17 (x4)

40m

UTC    dB Audio  Message
033815 -21 2138  S58MU N4IRT R+03
230630 -10 2327  N4IRT PI4DX -05 (x2)
022645  -4 2579  N4IRT DJ9BX -13 (x2)
022815 -18 1344  N4IRT PV8AJ -01
023115  +0 2489  N4IRT UB6OFG -22 (x5)
015400  +4  751  N4IRT PF7DKW -10 (x2)
015900 -14 1594  N4IRT F5PBG IN78 (x2)

20m

UTC    dB Audio  Message
234330 -20 2131  CE3TSK N4IRT R+04 (x2)
234500 -17 2131  W4EIS N4IRT +06
234530 -18 2131  IZ8EYN N4IRT R-03 (x2)
234630 -19 2131  W4EIS N4IRT RR73
234730 -22 2131  OK2CNI N4IRT FM08
234815 -10 2569  N4IRT OK2CNI +00 (x2)
235400 -15 2170  PD0JLA N4IRT FM08 (x2)
235630 -18 2170  <...> N4IRT FM08 (x2)

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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