KV4AA — 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

Receiver-side FT8 activity involving KV4AA, decoded by SO8OO in southeastern Poland. 73 FT8 messages attributed to this token as transmitter, on 80m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-06-17 and 2026-11-07.

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 73 FT8 messages attributed to KV4AA as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (63%), followed by 80 m (37%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -5 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-5 dB

Estimated median S/N

Bands

80m · 27 20m · 46

First attributed message: 2026-06-17
Last attributed message: 2026-11-07 05:28 UTC

Observed FT8 message patterns

Attributed sample: 73 messages
Active dates: 7 UTC dates
Estimated median S/N: -5 dB
Estimated 10th-90th percentile: -21 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 20, moderate (-15 to -9 dB) 12, strong (≥ -8 dB) 41.

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 KV4AA in decoded directed-looking exchanges:

OP7B · Belgium ×2 CR7BUJ · Portugal LY5A · Lithuania LZ1EV · Bulgaria R2BQM · European Russia UA3PHB · European Russia UA3PI · European Russia Z35T · North Macedonia 9K2YM · Kuwait 4QSO CT7AUT · Portugal EA6NB · Balearic Islands

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.

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	KV4AA S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-07 06:13	80m	- / -	DL5BWG	+9 / -	3	Partial capture
11-07 06:04	80m	- / -	F4LZZ	-16 / -	2	Partial capture
11-07 06:04	80m	- / -	OM2IB	+13 / -	3	Partial capture
11-07 06:01	80m	- / -24	IZ3GOO	+8 / -	5	✓ Closing fragment
11-07 05:58	80m	- / -	IK3/UY7LA	+1 / -	3	✓ Closing fragment
11-07 05:58	80m	- / +4	OP7B	-5 / -	3	✓ Closing fragment
11-07 05:56	80m	- / -	OM2IB	+10 / -	4	Partial capture
11-07 05:54	80m	- / -14	SP3JDZ	+19 / -	2	✓ Closing fragment
11-07 05:50	80m	- / -18	OK1FCR	+24 / -	2	✓ Closing fragment
11-07 05:40	80m	- / -	IT9VCE	-12 / -	5	Partial capture
11-07 05:28	80m	-15 / -10	HA5UA	+25 / -15	6	✓ Full exchange observed
11-07 05:27	80m	- / -8	LY1G	+14 / -	2	✓ Closing fragment
11-07 05:11	80m	- / -	YU0U	+22 / -	2	Partial capture
11-07 05:11	80m	-24 / -	EA6NB	+8 / -	2	✓ Closing observed
11-07 05:06	80m	- / -	9A6OY	-9 / -	12	Partial capture
11-07 05:06	80m	- / -	OE3DSB	+9 / -	5	Partial capture
11-07 05:05	80m	- / -	SV2BWY	-12 / -	3	Partial capture
11-07 05:05	80m	-20 / -9	SQ7NSN	+11 / -16	5	✓ Full exchange observed
11-07 05:04	80m	- / -	DL8LE	+3 / -	8	Partial capture
11-07 05:04	80m	-20 / -	K0SRL	- / +5	2	✓ Closing fragment
11-07 05:02	80m	- / -21	SQ9EJ	-12 / -	2	Partial capture
11-07 04:59	80m	- / -	YU0U	0 / -	2	Partial capture
11-07 04:56	80m	- / -7	G7RAU	-4 / -	2	✓ Closing fragment
11-07 04:56	80m	- / -	OE3DSB	+12 / -	10	Partial capture
11-07 04:54	80m	- / -23	DO1ID	+9 / -	15	Partial capture
11-07 04:54	80m	- / -22	YO4NF	0 / -	2	Partial capture
11-07 04:54	80m	- / -9	OM5FM	+19 / -	2	✓ Closing fragment
11-07 04:40	80m	- / -	SV1EKI	-5 / -	4	Partial capture
11-07 04:40	80m	-12 / -7	DL8TV	+3 / -18	3	Partial capture
11-07 04:39	80m	-13 / -	KK4JO	- / +2	2	Partial capture
11-07 04:38	80m	- / -	DL1BBO	-16 / -	2	Partial capture
11-07 04:38	80m	-20 / -	N7PIB	- / -9	2	✓ Closing fragment
11-07 04:37	80m	- / -23	OE5GQQ	-5 / -	3	Partial capture
11-07 04:37	80m	- / -19	YO4NF	+7 / -	3	Partial capture
11-07 04:34	80m	-10 / -	N5NMC	- / -9	2	Partial capture
11-07 04:34	80m	- / -	F4IIX	-18 / -	2	Partial capture
11-07 04:33	80m	-9 / -	KI7OXA	- / -20	2	✓ Closing fragment
11-07 04:31	80m	-9 / -	W0AAE	- / +2	5	✓ Closing fragment
11-07 04:29	80m	- / -	DC7RG	-6 / -	3	Partial capture
11-07 04:27	80m	- / -19	DL8TV	-4 / -	3	Partial capture
11-07 04:27	80m	- / -18	DO1ID	+6 / -	14	Partial capture
10-30 02:14	160m	- / -	F5UKW	-7 / -	8	Partial capture
10-30 02:08	160m	- / -	F5UKW	-4 / -	2	Partial capture
10-29 00:21	80m	- / -	F5PBG	-7 / -	2	Partial capture
09-23 05:06	80m	- / -3	DL1RNW	+8 / -	2	Partial capture
09-23 05:06	80m	- / -	DM1SV	-10 / -	4	Partial capture
09-23 05:04	80m	- / -	OK2BUZ	+16 / -	10	Partial capture
09-23 05:03	80m	- / -5	F5UKW	+12 / -	2	✓ Closing fragment
09-23 04:58	80m	- / -	YO2MTG	+1 / -	10	Partial capture
09-23 04:58	80m	- / -	9A5E	+9 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
055945  +2 2136  KV4AA IK3/UY7LA 73
060000  -7 1058  KV4AA OP7B RR73
060100  +6 1021  KV4AA IZ3GOO JN65 (x5)
060400 +11 1611  KV4AA OM2IB JN88
060400 -20 1853  KV4AA F4LZZ JN09
060430 +18 1611  KV4AA OM2IB JN88
060430 -11 1853  KV4AA F4LZZ JN09
060500  +9 1611  KV4AA OM2IB JN88
061345 +10 1045  KV4AA DL5BWG JO72 (x3)

160m

UTC    dB Audio  Message
042900  -5 2269  KV4AA OH2CLX R-25
042900 +12 2648  KV4AA DL3IAE JN49
042930  -7 2268  KV4AA OH2CLX R-25 (x2)
020515 -17 2123  KV4AA LA4GHA JP32
020815  -2 2419  KV4AA F5UKW JN12 (x10)

10m

UTC    dB Audio  Message
135645  -8 1167  KV4AA CR7BUJ 73
140130  -9 2733  KV4AA DG1KDD JO31

40m

UTC    dB Audio  Message
234600  -6 1883  KV4AA G0GFC IO92 (x3)
235930  -5 1432  KV4AA 9K2YM R-06 (x2)

20m

UTC    dB Audio  Message
042945  -3 2177  Z35T KV4AA RR73
043100 -24 1530  KV4AA E74PA JN93
043145  -4 2177  UA3PI KV4AA R-09 (x2)
043315  -5 2177  LZ1EV KV4AA -04 (x2)
043415  -4 2177  RW4CB KV4AA R-10
043615  -5 2177  LZ3GH KV4AA -15 (x2)
043715  -2 2177  8Z1IT KV4AA -14 (x3)
220200 -20 2086  KV4AA K0BFG FM18
220330 -16 2175  KV4AA G0OSK IO91 (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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