9A4V — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Croatia Most frequent locator attributed to this token: JN95

Receiver-side FT8 activity involving 9A4V, decoded by SO8OO in southeastern Poland. 427 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 2 UTC dates in the available aggregate history. Observed between 2026-08-29 and 2026-08-30.

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 427 FT8 messages attributed to 9A4V as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (46%), followed by 40 m (33%) and 20 m (19%). In this small sample, the estimated median decoder S/N was +12 dB; no usual signal pattern is inferred.

Overview

427

Messages attributed

UTC dates decoded

Active 15-min windows

+12 dB

Estimated median S/N

Bands

80m · 198 40m · 142 20m · 80 10m · 7

First attributed message: 2026-08-29
Last attributed message: 2026-08-30 08:09 UTC

Observed FT8 message patterns

Attributed sample: 427 messages
Active dates: 2 UTC dates
Estimated median S/N: +12 dB
Estimated 10th-90th percentile: -14 to +21 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 21, moderate (-15 to -9 dB) 82, strong (≥ -8 dB) 324.

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 9A4V in decoded directed-looking exchanges:

CX2SA · Uruguay ×2 PY2VE · Brazil ×2 OK1WCF · Czech Republic ×2 BX4AP · Taiwan JR3JGD · Japan 6K5BXQ · Republic of Korea 9M2HUS · West Malaysia BG7BVI · China C6AZB · Bahamas CT3CK · Madeira Islands EA3CY · Spain EA8UP · Canary 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.

Most frequent locator attributed to 9A4V

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: JN95 · 161 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 536 km (approx.)
Last such locator decoded: 2026-08-30 08:09 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	9A4V S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-30 08:08	10m	-6 / -	BX4AP	- / -4	2	✓ Closing fragment
08-30 08:06	10m	-3 / -	JR3JGD	- / -16	3	✓ Closing fragment
08-30 04:47	20m	-15 / -	UA9ZCC	-13 / -4	4	✓ Closing observed
08-30 04:42	20m	-16 / -	RA0ZIH	- / -10	4	✓ Closing fragment
08-30 04:41	20m	-20 / -	RN9CA	- / -8	2	✓ Closing fragment
08-30 04:40	20m	-20 / -	BG2EFX	- / -17	2	Partial capture
08-30 04:37	20m	-24 / -	UA9KAD	- / -25	3	Partial capture
08-30 03:51	80m	- / -5	SP5FWT	0 / -	2	Partial capture
08-30 03:50	80m	+14 / -	SV1EKI	-17 / -6	5	✓ Closing observed
08-30 03:48	80m	+12 / -	KT4ZG	- / -	3	Partial capture
08-30 03:46	80m	+8 / -19	SP3HIF	-5 / -25	6	✓ Full exchange observed
08-30 03:46	80m	+12 / -13	G8OO	-2 / -3	5	✓ Full exchange observed
08-30 03:44	80m	+6 / -	NV1U	- / -19	3	✓ Closing fragment
08-30 03:43	80m	+8 / -	W4KFC	-24 / -20	4	✓ Closing observed
08-30 03:41	80m	+12 / -	PT2ND	- / -	3	Partial capture
08-30 03:40	80m	+10 / -	9A4ZM	- / 0	2	✓ Closing fragment
08-30 03:39	80m	+18 / -	W3GQ	- / -	2	✓ Closing fragment
08-30 03:36	80m	+10 / -5	MI0OBC	-14 / -15	6	✓ Full exchange observed
08-30 03:34	80m	+9 / -12	HI8R	-10 / -11	6	Partial capture
08-30 03:32	80m	+11 / -	XE2X	- / -	3	✓ Closing fragment
08-30 01:35	80m	+14 / -	RV3SBS/P	- / -	2	Partial capture
08-30 01:34	80m	- / -	9A4ZM	+12 / -	3	Partial capture
08-30 01:32	80m	+14 / -18	N0YY	-20 / -18	6	✓ Full exchange observed
08-30 01:31	80m	+13 / -	M9KER	- / -12	2	✓ Closing fragment
08-30 01:30	80m	+12 / -	UR3HC	+3 / -3	3	✓ Closing observed
08-30 01:27	80m	+18 / +6	SM0ASB	-10 / -23	4	✓ Full exchange observed
08-30 01:25	80m	+14 / -	F6BHK	- / +1	3	✓ Closing fragment
08-30 01:23	80m	- / -	9A4ZM	+6 / -	2	Partial capture
08-30 01:21	80m	+17 / -	W4PSK	- / -11	5	✓ Closing fragment
08-30 01:19	80m	+13 / -	SP1ZMO	+4 / +1	3	✓ Closing observed
08-30 01:16	80m	+14 / -1	RZ6ALZ	+3 / -4	7	Partial capture
08-30 01:14	80m	+16 / -	OK1UOZ	+8 / +9	4	✓ Closing observed
08-30 01:14	80m	+16 / -3	RU3GF	+13 / -	3	Partial capture
08-30 01:13	80m	+10 / -5	EA5HM	-10 / +1	5	✓ Full exchange observed
08-30 01:11	80m	+11 / -2	K1SFA	-12 / -6	5	✓ Full exchange observed
08-30 01:10	80m	+12 / -	TF4M	- / -6	3	✓ Closing fragment
08-30 01:08	80m	- / -3	RV3SBS/P	-5 / -	3	✓ Closing fragment
08-30 01:06	80m	+14 / -	UN7CL	-18 / -10	4	✓ Closing observed
08-30 01:03	80m	+13 / -	A71EM	- / +5	8	✓ Closing fragment
08-30 00:58	80m	- / -	DO9BLX	+7 / -	4	Partial capture
08-30 00:58	80m	+12 / -	CX9AU	- / -15	7	✓ Closing fragment
08-30 00:55	80m	+16 / -	K5WBM	- / -18	4	✓ Closing fragment
08-30 00:53	80m	- / -	9A4ZM	+12 / -	2	Partial capture
08-30 00:53	80m	+16 / -	CX9AU	- / -	3	Partial capture
08-30 00:50	80m	+16 / -	KF2OG	- / -21	6	✓ Closing fragment
08-30 00:49	80m	+15 / -	W4YVA	-24 / -	3	✓ Closing observed
08-30 00:47	80m	+14 / -	EA7GUK	- / -13	4	✓ Closing fragment
08-30 00:45	80m	+17 / -	K1SFA	- / -	3	Partial capture
08-30 00:44	80m	+12 / -	RW6HP	- / -	2	Partial capture
08-30 00:42	80m	+14 / -10	R2EN	-24 / -1	3	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

10m

UTC    dB Audio  Message
073115 -12  801  9A4V TA7I KN91
080630 -11 1844  JR3JGD 9A4V -16 (x3)
080800  +0 1844  CQ 9A4V JN95
080830  +0 1844  BX4AP 9A4V -04 (x2)
080930 -20 1844  CQ 9A4V JN95
081515 -15  980  9A4V R6DWD +00

20m

UTC    dB Audio  Message
043730 -24 2033  UA9KAD 9A4V JN95 (x3)
044000 -22 1981  BG2EFX 9A4V -17 (x2)
044100 -19 1979  RN9CA 9A4V -08 (x2)
044230 -17 2020  RA0ZIH 9A4V JN95 (x4)
044700 -16 1769  UA9ZCC 9A4V JN95 (x2)
044815 -13 2268  9A4V UA9ZCC RR73
044830 -14 1769  UA9ZCC 9A4V 73

80m

UTC    dB Audio  Message
034745  +9 1786  SP3HIF 9A4V RR73
034800  -5  999  9A4V SP3HIF 73
034830  +9 1722  KT4ZG 9A4V JN95 (x3)
035000 +11 1722  CQ 9A4V JN95
035015 -20 2304  9A4V SV1EKI KM18
035015  -6 2205  9A4V IQ4JO JN63
035015  -5 2001  9A4V F5HNQ IN98
035030 +12 1722  SV1EKI 9A4V -06 (x2)
035115 -14 2304  9A4V SV1EKI 73 (x2)
035145  +1  501  9A4V SP5FWT -05 (x2)

40m

UTC    dB Audio  Message
235115 -10 2408  OA4ENG 9A4V JN95 (x4)
235515  -9  927  R3BCK 9A4V -02 (x3)
235745  +2  901  RI1FJL 9A4V JN95 (x3)
235900 -14  900  9A4V OK1WCF JO80
235915  +2  901  OK1WCF 9A4V -07
235930 -12  900  9A4V OK1WCF R-04
235945  +8  901  OK1WCF 9A4V RR73
000000 -13  900  9A4V OK1WCF 73

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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