KR4IRP — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EM64

Receiver-side FT8 activity involving KR4IRP, decoded by SO8OO in southeastern Poland. 7 FT8 messages attributed to this token as transmitter, on 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-08-25 and 2026-08-26.

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 7 FT8 messages attributed to KR4IRP as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was -15 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-15 dB

Estimated median S/N

Bands

20m · 7

First attributed message: 2026-08-25
Last attributed message: 2026-08-26 00:29 UTC

Observed FT8 message patterns

Attributed sample: 7 messages
Active dates: 2 UTC dates
Estimated median S/N: -15 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 3, moderate (-15 to -9 dB) 4, strong (≥ -8 dB) 0.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with KR4IRP in decoded directed-looking exchanges:

7Z1CZ · Saudi Arabia 9A3NM · Croatia DC7LR · Fed. Rep. of Germany DL1R · Fed. Rep. of Germany EA4FVT · Spain EB4DMH · Spain EC5M · Spain G0AGT · England HB9TIH · Switzerland HZ1TT · Saudi Arabia K2CAT · United States K4C · United States

Most frequent locator attributed to KR4IRP

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: EM64 · 5 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,314 km (approx.)
Last such locator decoded: 2026-08-26 00:29 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	KR4IRP S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-31 03:06	40m	- / -	IU7FQK	-10 / -	3	Partial capture
08-31 02:03	40m	- / -15	ZA/IK3BNO	-4 / -	2	Partial capture
08-31 00:31	40m	- / -	EA5HM	-10 / -	5	Partial capture
08-29 01:22	20m	- / -3	9A3NM	-9 / -	3	✓ Closing fragment
08-28 01:20	20m	- / -21	ON3KJU	-14 / -	5	✓ Closing fragment
08-27 01:56	20m	- / -	DK9ZQ	0 / -	5	Partial capture
08-27 01:56	20m	- / -13	ON1DGN	-14 / -	4	Partial capture
08-26 01:05	20m	- / -9	K2CAT	-20 / -	2	✓ Closing fragment
08-25 22:50	20m	-16 / -	N6VMO	- / -15	3	Partial capture
08-25 02:39	20m	- / -	DL3MIB	-3 / -	7	Partial capture
08-25 01:26	20m	- / -	KC1ZDZ	-12 / -	3	Partial capture
08-25 01:22	20m	- / +7	WY4I	-14 / -	3	Partial capture
08-25 00:39	20m	- / -16	7Z1CZ	+5 / -	6	✓ Closing fragment
08-23 03:26	20m	- / -17	R3KCW	+11 / -	3	✓ Closing fragment
08-23 03:20	20m	- / -	R3KCW	+13 / -	3	Partial capture
08-23 01:51	20m	- / -10	KC1WNO	-22 / -	3	✓ Closing fragment
08-23 01:29	20m	- / -	DK9ZQ	+4 / -	2	Partial capture
08-22 02:59	20m	- / -	F4VTR	-11 / -	5	Partial capture
08-17 22:37	20m	- / -	DK9ZQ	-6 / -	6	Partial capture
08-17 22:35	20m	- / -	IU5HIU	-23 / -	2	Partial capture
08-15 00:37	20m	- / -16	SV5BYP	-14 / -	3	✓ Closing fragment
08-10 22:29	20m	- / -	OM0RX	-10 / -	2	Partial capture
08-10 22:28	20m	- / -	HB9SZV	-7 / -	2	Partial capture
08-09 02:08	60m	- / -14	F5MYK	-11 / -	3	Partial capture
08-09 02:01	80m	- / -10	K4YT	-4 / -	3	✓ Closing fragment
08-09 01:58	80m	- / -8	K1EZ	-6 / -	2	✓ Closing fragment
08-08 01:48	20m	- / -	RV9WF	-12 / -	2	Partial capture
08-08 01:21	20m	- / -	RM8T	-18 / -	2	Partial capture
08-07 03:21	20m	- / -	IK4LZH	-1 / -	3	Partial capture
08-01 04:01	20m	- / -8	LZ2KV	-19 / -	3	✓ Closing fragment
08-01 03:38	20m	- / -8	LZ2KV	-8 / -	2	Partial capture
07-29 23:34	20m	- / -10	TN8GD	-10 / -	2	✓ Closing fragment
07-27 02:47	20m	- / -11	OE5CCN	-7 / -	3	✓ Closing fragment
07-27 02:01	20m	- / -	9A4ZM	-6 / -	2	Partial capture
07-27 01:56	20m	- / -	9A4ZM	-2 / -	2	Partial capture
07-27 01:16	20m	- / -	9A4ZM	0 / -	2	Partial capture
07-27 00:31	20m	- / -10	A71UN	-18 / -	4	Partial capture
07-26 02:45	20m	- / 0	EC5M	+2 / -	3	✓ Closing fragment
07-25 02:53	20m	- / -	PD0DEX	-18 / -	9	Partial capture
07-24 22:33	20m	- / -	DK0RST	-18 / -	3	Partial capture
07-22 03:08	80m	- / -16	HB9CXZ	+14 / -	4	✓ Closing fragment
07-21 00:36	20m	- / -20	EA4FVT	-16 / -	2	✓ Closing fragment
07-19 04:52	20m	- / -15	UA3RAU	-2 / -	2	✓ Closing fragment
07-19 04:43	20m	- / -23	RA3FY	-8 / -	4	Partial capture
07-19 04:38	20m	- / -14	R2EC	-9 / -	3	✓ Closing fragment
07-19 03:47	20m	- / -	R2AL	+2 / -	4	Partial capture
07-19 03:35	20m	- / -24	R7DX	-15 / -	3	✓ Closing fragment
07-19 03:33	20m	- / -	R2AL	-1 / -	4	Partial capture
07-19 03:16	20m	- / -	R2AL	-3 / -	4	Partial capture
07-19 03:14	20m	- / -21	HZ1TT	-18 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
024430 +10  714  KR4IRP DG1KPC JO30
024730 -12  730  KR4IRP F1IQH JN27
020315  -9  388  KR4IRP IK4LZH JN54
003100  -5 1642  KR4IRP EA5HM IM99 (x5)
020300  -4  542  KR4IRP ZA/IK3BNO -15 (x2)
020400  +5  543  KR4IRP RR73; AA9JC <...> -10
030630  -9  992  KR4IRP IU7FQK JN80 (x4)

20m

UTC    dB Audio  Message
015745 -11 1674  KR4IRP ON1DGN -13
015745  +3  752  KR4IRP DK9ZQ JO41
015815 -13 1674  KR4IRP ON1DGN -13
015815  -6  752  KR4IRP DK9ZQ JO41 (x2)
002845 -19 2178  KR4IRP F4JZW JN08
005130 -15 1227  KR4IRP G0AGT RR73
012045 -20 1020  KR4IRP ON3KJU -21 (x5)
012230  -7  980  KR4IRP 9A3NM JN85 (x3)

60m

UTC    dB Audio  Message
021445  +6  595  KR4IRP TA1BM KM39 (x2)
021545 -18 1900  KR4IRP DK7ZT -13 (x3)
020830 -11 2288  KR4IRP F5MYK IN97 (x3)

80m

UTC    dB Audio  Message
014945 -24 1755  KR4IRP K2FST FN13 (x2)
015300 -17  822  KR4IRP K2L RR73
015700 -15 2265  KR4IRP K2B -06 (x2)
030845 +12 2355  KR4IRP HB9CXZ JN46 (x4)
015815  -9 1958  KR4IRP K1EZ R-08 (x2)
020115  -5 2298  KR4IRP K4YT FM19 (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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