N4AVJ — 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: FM16

Receiver-side FT8 activity involving N4AVJ, decoded by SO8OO in southeastern Poland. 49 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-08-23.

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 49 FT8 messages attributed to N4AVJ as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (98%), followed by 40 m (2%). Most decodes (100%) fell within the six-hour window 22:00-04:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-8 dB

Estimated median S/N

Bands

40m · 1 20m · 48

First attributed message: 2026-06-09
Last attributed message: 2026-08-23 03:01 UTC

Observed FT8 message patterns

Attributed sample: 49 messages
Active dates: 6 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -15 to -4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 18, strong (≥ -8 dB) 27.

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 N4AVJ in decoded directed-looking exchanges:

CT7BRV · Portugal DC1KN · Fed. Rep. of Germany EA1B · Spain EA5HM · Spain EA5L · Spain F1DXP · France F1PBZ · France F4BYA · France F4CVQ · France F4EGM · France F4FLF · France F4FQY · France

Most frequent locator attributed to N4AVJ

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: FM16 · 38 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,551 km (approx.)
Last such locator decoded: 2026-08-23 03:01 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	N4AVJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-04 03:53	40m	- / -16	F6GCP	+8 / -	4	✓ Closing fragment
11-04 03:17	60m	- / -14	HB9ALO	-5 / -	3	✓ Closing fragment
11-04 03:14	60m	- / -	DL1DBR	-17 / -	3	Partial capture
11-04 02:17	60m	- / -14	F5HNQ	+7 / -	3	✓ Closing fragment
11-04 02:13	60m	- / +3	PE1MHY	-6 / -	4	✓ Closing fragment
11-04 02:10	60m	- / -4	F5RRS	+2 / -	6	✓ Closing fragment
11-04 02:08	60m	- / -	ON8WR	-11 / -	3	Partial capture
11-04 02:00	60m	- / -	F1IQH	-12 / -	3	Partial capture
11-03 23:00	40m	- / -7	IU2THY	+4 / -	5	Partial capture
11-03 22:57	40m	- / -9	S58N	-4 / -	2	Partial capture
11-03 22:43	40m	- / -20	EA5L	-12 / -	3	✓ Closing fragment
11-03 22:16	40m	- / -15	IU6WSM	-11 / -	5	✓ Closing fragment
11-02 04:29	40m	- / -24	LZ2IP	-16 / -	2	✓ Closing fragment
11-02 04:18	40m	- / -19	IZ2AMW	-6 / -	2	✓ Closing fragment
10-31 05:10	40m	- / -13	EA4D	-16 / -	8	Partial capture
10-18 03:53	40m	- / -17	SX37VER	-12 / -	5	Partial capture
10-18 03:45	40m	- / -13	RA5O	-8 / -	2	Partial capture
10-18 03:28	40m	- / -	UA3GDJ	-14 / -	2	Partial capture
10-18 03:26	40m	- / -17	F4FLF	+1 / -	3	✓ Closing fragment
10-10 03:15	40m	- / -12	F5UOU	0 / -	2	✓ Closing fragment
10-04 02:38	40m	- / -12	TM47CDXC	-16 / -	2	Partial capture
10-04 02:33	40m	- / -12	TM47CDXC	-14 / -	2	Partial capture
09-30 03:33	40m	- / -20	F4EGM	-5 / -	3	✓ Closing fragment
09-30 03:33	40m	- / -	R2EC	-15 / -	2	Partial capture
09-30 03:25	40m	- / -14	IW2ODG	-8 / -	2	✓ Closing fragment
09-25 01:54	40m	- / -6	NU1T	-14 / -	2	✓ Closing fragment
09-25 01:02	40m	- / -14	F1PBZ	-3 / -	5	✓ Closing fragment
09-23 03:45	40m	- / -11	LZ1EV	0 / -	2	✓ Closing fragment
09-23 03:31	40m	- / -7	G4PEY	+4 / -	3	✓ Closing fragment
09-22 04:16	40m	- / -18	RW3QU	+4 / -	3	✓ Closing fragment
09-22 04:15	40m	- / -19	XE1RBV	-16 / -	2	✓ Closing fragment
09-22 04:02	40m	- / -14	SP6JIU	-8 / -	3	✓ Closing fragment
09-19 21:46	40m	- / -15	F5NBU	0 / -	3	✓ Closing fragment
09-19 21:38	40m	- / -20	S51CK	-12 / -	4	✓ Closing fragment
09-19 05:27	40m	- / -19	I1RJP	+12 / -	3	✓ Closing fragment
09-19 05:26	40m	- / -19	M8HAG	-2 / -	2	✓ Closing fragment
09-19 04:25	40m	- / -11	F1PBZ	-11 / -	2	Partial capture
09-19 04:07	40m	- / -13	F4BYA	+16 / -	4	✓ Closing fragment
09-19 03:21	40m	- / -13	GM6URC	-16 / -	2	Partial capture
09-19 03:21	40m	- / -15	HK3W	-14 / -	5	✓ Closing fragment
09-18 04:45	40m	- / -24	PD0WL	-13 / -	5	✓ Closing fragment
09-18 04:43	40m	- / -	F4BYA	+7 / -	3	Partial capture
09-18 04:43	40m	- / -24	F5MOO	+2 / -	2	Partial capture
09-16 22:07	40m	- / +3	K4RUM	+2 / -	3	✓ Closing fragment
09-13 23:26	40m	- / -17	GM6URC	-14 / -	4	Partial capture
09-03 05:12	40m	- / -16	IK2ZJR	0 / -	5	✓ Closing fragment
09-03 05:07	40m	- / -6	HB9CEX	-4 / -	2	Partial capture
09-03 04:49	40m	- / -18	IA5KRO	-4 / -	3	✓ Closing fragment
09-03 04:40	40m	- / -13	DJ0MAB	+1 / -	2	Partial capture
09-03 04:36	40m	- / -17	F4CVQ	+11 / -	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
224315 -18 1297  N4AVJ EA5L -20
224345  -6  710  N4AVJ IU5TRG JN53
224345 -11 1298  N4AVJ EA5L -20 (x2)
225715  -4 2636  N4AVJ S58N JN76 (x2)
230045  +4 2751  N4AVJ IU2THY JN45 (x5)
035330  +8  722  N4AVJ F6GCP JN18 (x4)

60m

UTC    dB Audio  Message
021245  +5 1904  N4AVJ F5RRS 73
021345  -1  809  N4AVJ PE1MHY +03 (x4)
021730  +5 2700  N4AVJ F5HNQ IN98 (x3)
022130 -17 2093  N4AVJ OK1XD -20
031400 -16 1236  N4AVJ DL1DBR JO41 (x3)
031745  -6 1222  N4AVJ HB9ALO JN45 (x3)

20m

UTC    dB Audio  Message
020045 -12  462  N4AVJ IK4LZH JN54

CW

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

Explore CW reception at SO8OO

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