K4YYL — 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: EM84

Receiver-side FT8 activity involving K4YYL, decoded by SO8OO in southeastern Poland. 5 FT8 messages attributed to this token as transmitter, on 20m, across 1 UTC dates in the available aggregate history. Last observed 2026-08-25.

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 5 FT8 messages attributed to K4YYL as the transmitting token by decoded message structure across 1 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 -18 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-18 dB

Estimated median S/N

Bands

20m · 5

First attributed message: 2026-08-25
Last attributed message: 2026-08-25 05:31 UTC

Observed FT8 message patterns

Attributed sample: 5 messages
Active dates: 1 UTC dates
Estimated median S/N: -18 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) 2, 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 K4YYL in decoded directed-looking exchanges:

F4CQS · France ×2 DL4JG · Fed. Rep. of Germany F5CKQ · France GM3AND · Scotland R3LCG · European Russia R3NCG · European Russia RA6OF · European Russia UA3RAU · European Russia UR3LM · Ukraine Z62NS · Republic of Kosovo 4O7CC · Montenegro CT7BRV · Portugal

Most frequent locator attributed to K4YYL

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: EM84
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,079 km (approx.)
Last such locator decoded: 2026-08-25 04:41 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	K4YYL S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-29 05:29	60m	- / -8	HB9XQH	+5 / -	2	Partial capture
10-29 05:20	40m	- / -17	DL8TV	-15 / -	2	Partial capture
10-29 05:19	40m	- / -15	DL1GLO	-9 / -	3	✓ Closing fragment
10-29 05:14	40m	- / -10	IK1LJO	-13 / -	8	✓ Closing fragment
10-29 05:14	40m	- / -17	DF7DC	-11 / -	3	✓ Closing fragment
10-29 05:11	40m	- / -21	UB6OFG	-7 / -	3	✓ Closing fragment
10-29 05:10	40m	- / -	IK1LJO	-18 / -	2	Partial capture
10-29 04:34	40m	- / -20	EI2IXB	+2 / -	2	✓ Closing fragment
10-27 05:28	40m	- / -9	PD0WL	-13 / -	2	✓ Closing fragment
10-27 05:18	40m	- / -	SP9UPH	-11 / -	2	✓ Closing fragment
10-27 05:11	40m	- / -9	IU5TUG	-10 / -	2	Partial capture
10-27 05:09	40m	- / -15	IZ8NON	-1 / -	4	✓ Closing fragment
10-27 05:09	40m	- / -	9A2WA	-10 / -	4	Partial capture
10-27 04:52	40m	- / -15	4O7CC	-4 / -	5	✓ Closing fragment
10-27 04:26	40m	- / -7	IK0QDM	-12 / -	2	✓ Closing fragment
10-27 04:25	40m	- / -	SV9AUP	-10 / -	2	Partial capture
10-27 03:49	40m	- / -11	F4CQS	-11 / -	4	✓ Closing fragment
10-27 03:38	40m	- / -	EB3JT	-6 / -	7	Partial capture
10-27 03:01	40m	- / -16	UA6BGM	+2 / -	2	✓ Closing fragment
10-27 02:25	40m	- / -18	R6OP	+3 / -	3	✓ Closing fragment
10-26 07:14	40m	- / -19	IK1WGX	-15 / -	4	✓ Closing fragment
10-26 06:57	40m	- / -16	F5OIH	-4 / -	3	✓ Closing fragment
10-26 06:37	40m	- / -16	OH3OJ	-4 / -	3	✓ Closing fragment
10-26 06:34	40m	- / -11	IK2JYT	-1 / -	2	✓ Closing fragment
10-26 06:21	40m	- / -24	F4JJA	-10 / -	3	✓ Closing fragment
10-26 06:19	40m	- / -10	F4EXC	-5 / -	3	Partial capture
10-26 06:18	40m	- / -23	DK1HSI	+2 / -	2	✓ Closing fragment
10-26 06:13	40m	- / -6	ON8WR	-10 / -	2	Partial capture
10-26 06:13	40m	- / -	R2AL	-2 / -	3	Partial capture
10-26 06:04	40m	- / -17	DL2ALF	-2 / -	9	✓ Closing fragment
10-26 06:03	40m	- / -11	ON8WR	-17 / -	2	Partial capture
10-26 05:56	40m	- / -19	SP3DOF	-9 / -	2	✓ Closing fragment
10-26 05:46	40m	- / -12	DL7MDX	-6 / -	3	Partial capture
10-26 05:38	40m	- / -17	ES6DO	-3 / -	2	✓ Closing fragment
10-26 05:26	40m	- / -13	PD1CMP	-2 / -	3	✓ Closing fragment
10-26 05:11	40m	- / -15	SV2AOB	-4 / -	3	Partial capture
10-26 05:11	40m	- / -9	F4IIX	-8 / -	2	✓ Closing fragment
10-26 05:01	40m	- / -12	Z34K	+2 / -	4	✓ Closing fragment
10-26 04:48	40m	- / -15	IS0AFM	+2 / -	2	Partial capture
10-26 04:26	40m	- / -15	CT7BRV	-11 / -	2	✓ Closing fragment
08-29 05:53	20m	- / -11	VK4XK	-18 / -	2	Partial capture
08-29 05:33	20m	- / -12	CN8NS	-14 / -	5	Partial capture
08-29 05:18	20m	- / +3	Z62NS	-1 / -	2	✓ Closing fragment
08-25 05:30	20m	-12 / -12	R3NCG	0 / -	3	✓ Closing observed
08-25 05:28	20m	- / -9	GM3AND	+1 / -	3	✓ Closing fragment
08-25 05:15	20m	-14 / -	DL4JG	-13 / -15	3	✓ Closing observed
08-25 05:13	20m	- / -10	UA3SAO	-4 / -	19	Partial capture
08-25 05:13	20m	- / -	RK4UZ	0 / -	2	Partial capture
08-25 05:02	20m	- / -12	F5CKQ	-11 / -	14	✓ Closing fragment
08-25 05:01	20m	- / -12	UR3LM	+4 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
052915  +3  806  K4YYL HB9XQH -08 (x2)

40m

UTC    dB Audio  Message
051445 -10  838  K4YYL DF7DC RR73
051515 -10 1653  K4YYL IK1LJO JN45
051515  -9 1946  K4YYL EC3A -08
051545 -12  838  K4YYL DF7DC R-19
051715 -15 1652  K4YYL IK1LJO R-10 (x5)
051915 -11 2538  K4YYL DL1GLO R-15
051945  -6 1653  K4YYL IK1LJO 73
051945  -9 2538  K4YYL DL1GLO R-15
052015 -19 2289  K4YYL DL8TV -17
052015  -8 2538  K4YYL DL1GLO 73
052145 -11 2289  K4YYL DL8TV -17

20m

UTC    dB Audio  Message
052845  +4 1028  K4YYL GM3AND -09 (x3)
053045  -2 1127  K4YYL R3NCG -12 (x2)
053130 -12  704  R3NCG K4YYL 73
051830  -4  730  K4YYL Z62NS +03 (x2)
053300 -17 2137  K4YYL CN8NS -12 (x5)
055345 -17  978  K4YYL VK4XK -11 (x2)

CW

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

Explore CW reception at SO8OO

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