AJ4OA — 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 AJ4OA, decoded by SO8OO in southeastern Poland. 15 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-09-21.

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 15 FT8 messages attributed to AJ4OA as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (93%), followed by 40 m (7%). In this small sample, the estimated median decoder S/N was -14 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-14 dB

Estimated median S/N

Bands

40m · 1 20m · 14

First attributed message: 2026-06-12
Last attributed message: 2026-09-21 22:29 UTC

Observed FT8 message patterns

Attributed sample: 15 messages
Active dates: 5 UTC dates
Estimated median S/N: -14 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 5, strong (≥ -8 dB) 3.

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 AJ4OA in decoded directed-looking exchanges:

9K2OK · Kuwait DL1EHF · Fed. Rep. of Germany M3XGV · England SP6GCU · Poland US5HL · Ukraine DK7ZT · Fed. Rep. of Germany EA1CQ · Spain G0LZX · England I1RJP · Italy IK3SCB · Italy ON4SS · Belgium

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	AJ4OA S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-12 22:34	40m	- / -	G5TV	-19 / -	2	Partial capture
09-23 21:52	40m	- / -10	I1RJP	-1 / -	8	✓ Closing fragment
09-21 22:31	40m	- / -	UA6LIK	0 / -	2	Partial capture
09-18 22:29	40m	- / -	G8OO	+4 / -	4	Partial capture
09-14 22:01	40m	- / -20	II9IAGM	-8 / -	2	Partial capture
09-08 21:57	40m	- / -15	IK3SCB	-17 / -	2	✓ Closing fragment
09-07 22:08	40m	- / -10	DK7ZT	-5 / -	5	✓ Closing fragment
09-07 22:08	40m	- / -	F4BYA	+10 / -	4	Partial capture
09-07 22:05	40m	- / -14	EA1CQ	-2 / -	3	✓ Closing fragment
08-28 22:10	40m	- / -23	DK7ZT	+1 / -	3	Partial capture
08-28 22:10	40m	- / -13	ON4SS	+1 / -	2	✓ Closing fragment
08-25 22:27	20m	-10 / -	SP6GCU	- / -7	2	✓ Closing fragment
08-25 22:25	20m	-22 / -	DL1EHF	- / -18	2	✓ Closing fragment
08-14 21:56	20m	- / -12	9K2GR	-18 / -	2	Partial capture
08-10 22:31	20m	- / -	OM0RX	-18 / -	3	Partial capture
08-10 22:19	20m	- / -11	SP1LON	-4 / -	3	Partial capture
08-01 22:12	20m	- / -7	M3XGV	-15 / -	4	✓ Closing fragment
07-31 22:28	20m	- / -13	9K2OK	-12 / -	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
223045  +5  588  AJ4OA G8OO JO02 (x2)
222945 -18  624  UR1CCT AJ4OA -12
223130  +0 1621  AJ4OA UA6LIK LN08 (x2)
215200  +3  443  AJ4OA I1RJP JN45 (x8)
223400 -22 1825  AJ4OA G5TV IO93 (x2)

20m

UTC    dB Audio  Message
221900  -3 2867  AJ4OA SP1LON -11 (x3)
223145 -17 1577  AJ4OA OM0RX JN88 (x3)
215600 -14 2036  AJ4OA 9K2GR R-12 (x2)
222115 -19 1452  K7HTM AJ4OA -12
222345 -18 2030  G3MTL AJ4OA -13
222515 -24 1816  DL1EHF AJ4OA -18 (x2)
222715 -10 2878  SP6GCU AJ4OA R-07 (x2)
223145 -21 2060  AJ4OA OY1HJ R-04

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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