AD8IO — 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: EN81

Receiver-side FT8 activity involving AD8IO, decoded by SO8OO in southeastern Poland. 135 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 13 UTC dates in the available aggregate history. Observed between 2026-06-16 and 2026-10-20.

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 135 FT8 messages attributed to AD8IO as the transmitting token by decoded message structure across 13 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (41%), followed by 80 m (40%) and 20 m (19%). Most decodes (97%) fell within the six-hour window 23:00-05:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (94%); the estimated median was -20 dB.

Overview

135

Messages attributed

UTC dates decoded

Active 15-min windows

-20 dB

Estimated median S/N

Bands

80m · 54 40m · 55 20m · 26

First attributed message: 2026-06-16
Last attributed message: 2026-10-20 22:59 UTC

Observed FT8 message patterns

Attributed sample: 135 messages
Active dates: 13 UTC dates
Estimated median S/N: -20 dB
Estimated 10th-90th percentile: -24 to -16 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 127, moderate (-15 to -9 dB) 8, 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.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with AD8IO in decoded directed-looking exchanges:

DL1RNW · Fed. Rep. of Germany ×2 W3HF · United States WD4NC · United States YC1IFR · Indonesia 3Z4DX · Poland 9A6R · Croatia A99AA · Bahrain AC1OR · United States CT2HEX · Portugal EA1HVS · Spain EX7CQ · Kyrgyzstan F6FDY · France

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 AD8IO

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: EN81 · 70 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,496 km (approx.)
Last such locator decoded: 2026-10-20 22:59 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	AD8IO S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-20 23:06	40m	- / -14	TA4SSK	-8 / -	2	Partial capture
10-20 23:05	40m	- / -4	G3UEG	-6 / -	4	Partial capture
10-20 23:04	40m	- / -17	EX7CQ	+4 / -	2	✓ Closing fragment
10-20 23:03	40m	- / -	IU5HIU	-8 / -	2	Partial capture
10-19 01:37	40m	- / -	R2AL	-9 / -	3	Partial capture
10-19 01:29	40m	-22 / -	TA3NK	- / -	2	Partial capture
10-19 01:28	40m	- / -4	TA4SSK	-18 / -	2	Partial capture
10-19 01:04	40m	- / -15	A61DD	-21 / -	2	Partial capture
10-19 00:21	40m	- / -	PB2A	-8 / -	2	Partial capture
10-12 02:01	80m	- / +2	VP2MAW	-15 / -	3	✓ Closing fragment
10-12 02:00	80m	- / -18	G0YCE	+8 / -	3	✓ Closing fragment
10-04 02:23	40m	-22 / -	LZ2IP	- / -4	4	✓ Closing fragment
10-04 02:21	40m	- / -	W1YK	-18 / -	2	Partial capture
10-04 01:43	40m	- / -8	3Z4DX	-6 / -	2	✓ Closing fragment
09-30 01:25	40m	- / -	R6DZL	0 / -	2	Partial capture
09-30 00:58	40m	-18 / +3	IU5AWQ	-4 / -11	3	Partial capture
09-30 00:50	40m	- / -	OH4EIJ	-2 / -	3	Partial capture
09-30 00:49	40m	- / -6	F6FDY	-9 / -	3	✓ Closing fragment
09-30 00:49	40m	- / -	M7LYG	-20 / -	3	Partial capture
09-30 00:35	40m	- / -16	I4DOR	-7 / -	3	✓ Closing fragment
09-30 00:24	40m	- / -2	KD1BA	-15 / -	2	✓ Closing fragment
09-30 00:17	40m	-17 / -	AC1OR	- / +5	3	✓ Closing fragment
09-30 00:15	40m	-19 / -	KR4I	- / -	3	Partial capture
09-29 22:30	40m	- / -	PA3DDP	+3 / -	2	Partial capture
09-29 22:20	40m	- / -17	HB9ELE	-10 / -	5	✓ Closing fragment
09-23 01:40	80m	- / -13	W3DQS	-4 / -	2	✓ Closing fragment
09-23 01:37	80m	- / -	EU7FBB	-2 / -	5	Partial capture
09-23 01:37	80m	- / -	LY1DY	+9 / -	2	Partial capture
09-23 01:34	80m	-21 / -11	I1WXY	+8 / -	6	✓ Closing observed
09-23 01:30	80m	-22 / -	ZP6TT	- / -13	3	Partial capture
09-23 01:26	80m	-24 / -	K1JEA	- / -14	2	✓ Closing fragment
09-23 01:25	80m	-24 / -	AC9HP	- / -11	2	✓ Closing fragment
09-23 01:22	80m	-23 / -	NE5TX	- / -	4	Partial capture
09-23 01:21	80m	- / -	LY1DY	+7 / -	2	Partial capture
09-23 01:20	80m	-22 / -20	YO4NF	+8 / -14	5	✓ Full exchange observed
09-23 01:15	80m	-21 / -20	RI1FJZ	-18 / -18	10	✓ Full exchange observed
09-23 01:06	80m	- / -	KE4EB	-10 / -	2	✓ Closing fragment
09-23 00:58	80m	- / -18	F4NGR	-8 / -	4	✓ Closing fragment
09-23 00:53	80m	- / -14	F1PBZ	0 / -	2	Partial capture
09-23 00:49	80m	- / +1	W9JOY	-16 / -	2	Partial capture
09-23 00:32	40m	- / -	KC1ZDZ	-11 / -	3	Partial capture
09-23 00:30	40m	- / -	EA1AGM	-20 / -	8	Partial capture
09-23 00:25	40m	-19 / +6	VE3HLM	-10 / -	3	✓ Full exchange observed
09-23 00:22	40m	- / +9	VE2GSM	-10 / -	2	Partial capture
09-23 00:18	40m	-18 / -	NA4GA	- / -1	2	Partial capture
09-23 00:15	40m	-18 / -	YU4FQN	- / -13	4	✓ Closing fragment
09-23 00:14	40m	- / -	RD3FY	+8 / -	5	Partial capture
09-23 00:13	40m	-17 / -	VA3MWT	- / -	2	✓ Closing fragment
09-23 00:08	40m	-15 / -8	G5TV	-5 / -	4	✓ Closing observed
09-23 00:05	40m	-16 / -	US2YW	- / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
013730  -5 1012  AD8IO R2AL KO85 (x3)
225945 -22 1352  EA2A AD8IO EN81
230330 -12 1900  AD8IO IU5HIU JN53
230430  +4  496  AD8IO EX7CQ -17 (x2)
230530  -5  540  AD8IO IU5HIU JN53
230530  -8  966  AD8IO G3UEG JO01
230600 -11 1084  AD8IO TA4SSK -14
230600  -7  966  AD8IO G3UEG JO01
230630 -13  611  AD8IO LB7ZG JP50
230630  -4  966  AD8IO G3UEG JO01
230645  -6 1084  AD8IO TA4SSK -14
230700  -6  966  AD8IO G3UEG R-04

80m

UTC    dB Audio  Message
013715 -24 1333  I1WXY AD8IO RR73
013730 +10 1253  AD8IO LY1DY KO14
013730  -4 1333  AD8IO EU7FBB KO43 (x5)
014015  -5  922  AD8IO W3DQS -13 (x2)
020045 +12 1616  AD8IO G0YCE -18
020115 -16 1312  AD8IO VP2MAW +02
020115  +6 1616  AD8IO G0YCE RR73
020145 -15 1312  AD8IO VP2MAW +02
020145  +5 1616  AD8IO G0YCE RR73
020215 -13 1312  AD8IO VP2MAW RR73

20m

UTC    dB Audio  Message
004100 -21 1510  7Z1BQ AD8IO EN81
144330  -8 1825  AD8IO C31US -13 (x2)
192215  -7 2933  AD8IO F5NKX IN99 (x3)
194600  -2  882  AD8IO ON3KJU JO20 (x5)
205715  -7 2368  AD8IO WD4NC RR73
210015 -16 1217  AD8IO W3HF RR73
133915 -22 2017  AD8IO YC1IFR RR73
152200 -24 1762  AD8IO MI7XHT IO64

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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