K4QVH — 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: EM74

Receiver-side FT8 activity involving K4QVH, decoded by SO8OO in southeastern Poland. 6 FT8 messages attributed to this token as transmitter, on 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-18 and 2026-08-28.

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 6 FT8 messages attributed to K4QVH as the transmitting token by decoded message structure across 4 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 -20 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-20 dB

Estimated median S/N

Bands

20m · 6

First attributed message: 2026-06-18
Last attributed message: 2026-08-28 01:00 UTC

Observed FT8 message patterns

Attributed sample: 6 messages
Active dates: 4 UTC dates
Estimated median S/N: -20 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 1, 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 K4QVH in decoded directed-looking exchanges:

CT7AUT · Portugal ×2 EC3A · Spain ×2 IU5AWQ · Italy ×2 9K2MP · Kuwait HC5TFS · Ecuador M9KJY · England OZ1BUR · Denmark RA6FC · European Russia EA3IAZ · Spain EA5HM · Spain EA8AE · Canary Islands F1MXE · France

Most frequent locator attributed to K4QVH

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: EM74 · 5 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,198 km (approx.)
Last such locator decoded: 2026-08-28 01:00 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	K4QVH S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-05 05:42	60m	- / -21	DG0OBU	+3 / -	2	Partial capture
11-05 05:40	60m	- / -18	DL1CF	+10 / -	2	✓ Closing fragment
11-05 05:33	60m	- / -13	G0BLB	+8 / -	4	✓ Closing fragment
11-05 05:32	60m	- / -8	S56P	-4 / -	2	✓ Closing fragment
11-05 05:04	60m	- / -16	DG8DBW	-7 / -	2	✓ Closing fragment
11-05 05:01	60m	- / -13	SP2EWQ	-6 / -	3	✓ Closing fragment
11-05 04:03	60m	- / -20	9A4ZM	+10 / -	3	✓ Closing fragment
11-05 04:02	60m	- / -14	SP2Y	+5 / -	4	✓ Closing fragment
11-03 06:21	60m	- / -14	HB9AMO	-6 / -	2	✓ Closing fragment
11-03 06:10	60m	- / -13	F5BZB	+3 / -	2	✓ Closing fragment
11-03 06:03	60m	- / -4	IT9VCE	-5 / -	3	✓ Closing fragment
11-03 05:58	60m	- / -20	S53R	+11 / -	3	✓ Closing fragment
11-03 05:34	60m	- / -11	F6ECI	0 / -	3	✓ Closing fragment
11-03 05:14	60m	- / -19	EC3A	-12 / -	2	✓ Closing fragment
11-03 05:08	60m	- / -19	DF2UU	+3 / -	3	✓ Closing fragment
11-02 03:31	60m	- / -20	DK7ZT	-9 / -	3	Partial capture
11-02 03:10	60m	- / -19	DK7ZT	-4 / -	2	Partial capture
11-01 01:40	60m	- / -13	OK1BN	-8 / -	2	✓ Closing fragment
11-01 01:26	60m	- / -10	F5OYA/P	-10 / -	6	✓ Closing fragment
11-01 01:25	60m	- / -15	CT7AUT	-2 / -	2	✓ Closing fragment
10-31 05:11	60m	- / -24	SP9JZU	-15 / -	4	✓ Closing fragment
10-31 05:10	60m	- / -16	EA6NB	+11 / -	2	✓ Closing fragment
10-31 04:33	60m	- / -	4X5MZ	-17 / -	3	✓ Closing fragment
10-31 04:23	60m	- / -17	IW1FZR	+4 / -	4	✓ Closing fragment
10-31 03:42	60m	- / -14	HB9SNR	+2 / -	2	✓ Closing fragment
10-30 04:28	60m	- / -22	HB9RB	-8 / -	2	Partial capture
10-30 04:15	60m	- / -20	HB9RB	-2 / -	2	Partial capture
10-30 03:48	60m	- / -20	OZ7DK	-23 / -	2	Partial capture
10-30 03:44	60m	- / -11	SV8JE	+11 / -	2	✓ Closing fragment
10-30 03:30	60m	- / -17	PC2J	-5 / -	2	✓ Closing fragment
10-30 03:14	60m	- / -15	EA3NE	-4 / -	6	✓ Closing fragment
10-30 03:14	60m	- / -23	LA9GX	-8 / -	3	✓ Closing fragment
10-30 03:02	60m	- / -20	ER3ZW	-13 / -	2	✓ Closing fragment
10-29 05:37	60m	- / -15	F5RRS	-4 / -	4	✓ Closing fragment
10-29 05:37	60m	- / -15	DL3OCF	0 / -	3	Partial capture
10-29 05:34	60m	- / -24	G8OO	-9 / -	5	Partial capture
10-29 05:29	60m	- / -	OM3WBY	+2 / -	2	Partial capture
10-29 05:28	60m	- / -18	OH1MLZ	+4 / -	6	✓ Closing fragment
10-29 05:08	60m	- / -11	DL2MIJ	0 / -	4	✓ Closing fragment
10-29 05:07	60m	- / -	ON8WR	-15 / -	3	Partial capture
10-29 05:05	60m	- / -11	Z35T	-3 / -	3	✓ Closing fragment
10-28 05:49	60m	- / -	EB3DBR	-6 / -	2	Partial capture
10-28 05:43	60m	- / -13	MI0NWA	-12 / -	3	Partial capture
10-28 05:24	60m	- / -14	M5AEH	-4 / -	4	Partial capture
10-28 05:23	60m	- / -12	DK9OR	-12 / -	2	✓ Closing fragment
10-28 05:21	60m	- / -11	S56A	+4 / -	2	✓ Closing fragment
10-28 05:20	60m	- / -15	G8OO	-14 / -	9	Partial capture
10-28 05:16	60m	- / -7	F4GAJ	-20 / -	3	✓ Closing fragment
10-28 05:14	60m	- / -5	F5OWT	+2 / -	3	✓ Closing fragment
10-28 05:13	60m	- / -16	F4IIX	-5 / -	4	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
050145  -3 2453  K4QVH SP2EWQ JO93 (x3)
050430  -9 2785  K4QVH DG8DBW -16 (x2)
053230  -4 1980  K4QVH S56P -08 (x2)
053300  +9  502  K4QVH G0BLB IO81 (x4)
054030 +10 2617  K4QVH DL1CF -18 (x2)
054200  +3 1915  K4QVH DG0OBU -21 (x2)

40m

UTC    dB Audio  Message
040915  +4 2769  K4QVH F5JYD RR73
041400 -14 1460  K4QVH IZ8EYN -15 (x6)
044330 -15 1810  K4QVH EA3IAZ -16 (x3)
050245  +1 2020  K4QVH IZ8VYU -10 (x2)
053200  +2 1891  K4QVH IK3BNO -10 (x2)
024130 -11  454  K4QVH RR73; KK7GUU <...> -06

20m

UTC    dB Audio  Message
003615  -6 3077  K4QVH OZ1BUR RR73 (x2)
005415  -9 1013  K4QVH RA6FC RR73
022845 -11  539  K4QVH M9KJY RR73
004330 -13 1080  K4QVH 9K2MP RR73
005500 -14 1598  K4QVH SV5BYP KM46 (x3)
011330 -17 2099  W4IMD K4QVH EM74
022615 -15 2098  LU9GDN K4QVH EM74
011845 -24 1757  K4QVH IR7MGGC +02
011130 -13 2472  K4QVH TI8/W2RE -04
010000 -21 2098  KP4MBG K4QVH EM74
011745 -14 2073  K4QVH HC5TFS +05 (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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