OM0ACA — 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: Slovak Republic Most frequent locator attributed to this token: KN09

Receiver-side FT8 activity involving OM0ACA, decoded by SO8OO in southeastern Poland. 75 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-07-09 and 2026-11-01.

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 75 FT8 messages attributed to OM0ACA as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (41%), followed by 160 m (33%) and 40 m (25%). Several six-hour UTC windows tied for the largest share (79%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -14 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-14 dB

Estimated median S/N

Bands

160m · 25 80m · 31 40m · 19

First attributed message: 2026-07-09
Last attributed message: 2026-11-01 19:48 UTC

Observed FT8 message patterns

Attributed sample: 75 messages
Active dates: 4 UTC dates
Estimated median S/N: -14 dB
Estimated 10th-90th percentile: -20 to -3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 19, moderate (-15 to -9 dB) 37, strong (≥ -8 dB) 19.

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 OM0ACA in decoded directed-looking exchanges:

UT2PC · Ukraine ×2 9A2AJ · Croatia DL1RNW · Fed. Rep. of Germany DJ0MAB · Fed. Rep. of Germany DL5SUA · Fed. Rep. of Germany F1IQH · France PA7ZZ · Netherlands US8AR · Ukraine DO2DH · Fed. Rep. of Germany HF5A · Poland LA4NM · Norway SP3JHZ · Poland

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 OM0ACA

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: KN09 · 41 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 75 km (approx.)
Last such locator decoded: 2026-11-01 19:48 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	OM0ACA S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-01 19:48	80m	- / -	DK7UY	-6 / -	2	Partial capture
11-01 19:45	80m	-6 / -	HF5A	+4 / -	2	✓ Closing observed
11-01 19:42	80m	-2 / -	Z62NS	- / -11	2	Partial capture
11-01 19:30	80m	-9 / -	SP3JHZ	-14 / -10	5	✓ Closing observed
11-01 19:28	80m	-5 / -	DO2DH	-11 / -8	2	Partial capture
11-01 19:28	80m	-12 / -	LA4NM	- / -12	2	✓ Closing fragment
11-01 19:27	80m	- / -	DK7UY	-9 / -	4	Partial capture
11-01 18:53	160m	-9 / -13	9A2AJ	-3 / -9	6	✓ Full exchange observed
11-01 18:50	160m	-14 / -11	DL1RNW	+10 / -3	5	✓ Full exchange observed
11-01 18:35	160m	-15 / -	OZ2LIN	- / -	2	Partial capture
10-31 09:29	40m	-14 / -	UT2PC	+4 / -1	5	✓ Full exchange observed
10-31 09:26	40m	-14 / -12	DL5SUA	-8 / -9	6	✓ Full exchange observed
10-31 09:25	40m	-14 / -12	US8AR	-5 / -5	5	✓ Full exchange observed
10-31 09:23	40m	-15 / -	F1IQH	- / -13	2	✓ Closing fragment
10-31 09:23	40m	-14 / -10	DJ0MAB	-12 / -3	6	✓ Full exchange observed
10-31 09:22	40m	-18 / -20	PA7ZZ	-12 / -13	5	✓ Full exchange observed
08-11 17:33	10m	- / -4	9A2KS	-14 / -	2	Partial capture
08-11 17:28	40m	-16 / -6	LY3BES	-20 / -16	4	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
193000 -11 1865  OM0ACA DK7UY JO44
193015  -5 1865  SP3JHZ OM0ACA -10 (x2)
193100 -12 1865  OM0ACA SP3JHZ RR73
193115 -17 1865  SP3JHZ OM0ACA 73
193130 -15 1865  OM0ACA SP3JHZ 73
193145 -11 1865  DO2DH OM0ACA 73
194230  -2 1865  Z62NS OM0ACA KN09 (x2)
194515  +4 2341  OM0ACA HF5A JO92
194600  -6 1865  HF5A OM0ACA RR73
194800  -2 1865  OM0ACA DK7UY JO44
194815  -8 1864  CQ OM0ACA KN09
194830 -10 1865  OM0ACA DK7UY JO44
194930  -1 2250  OM0ACA SN9Q JO90

160m

UTC    dB Audio  Message
185015 +10 2866  OM0ACA DL1RNW -11
185030 -10 1865  DL1RNW OM0ACA R-03
185045  +9 2866  OM0ACA DL1RNW RR73
185100 -15 1865  DL1RNW OM0ACA 73
185345  -7 2726  OM0ACA 9A2AJ -13
185400 -12 1865  9A2AJ OM0ACA R-09
185415  -1 2726  OM0ACA 9A2AJ RR73
185430  -7 1865  9A2AJ OM0ACA 73
185445  -1 2726  OM0ACA 9A2AJ RR73
185500  -8 1865  9A2AJ OM0ACA 73
185545 -20 1865  CQ OM0ACA KN09
185615 -17 1865  TK4RB OM0ACA KN09
185700 -15 1865  E70SZ OM0ACA KN09
185800 -20 1865  SP7AS OM0ACA KN09
185900 -12 1865  F4BKV OM0ACA KN09

40m

UTC    dB Audio  Message
092615 -14 1900  US8AR OM0ACA R-05
092630  -5 2273  OM0ACA US8AR RR73
092630  -8 2334  OM0ACA DL5SUA JO53
092645 -14 1900  US8AR OM0ACA 73
092700  -7 2334  OM0ACA DL5SUA JO53
092745 -12 1901  CQ OM0ACA KN09
092815 -12 1901  DL5SUA OM0ACA -09
092830 -10 2334  OM0ACA DL5SUA R-12
092845 -16 1901  DL5SUA OM0ACA RR73
092900  +2  995  OM0ACA UT2PC KO21
092900  -8 2334  OM0ACA DL5SUA 73
092915 -14 1901  UT2PC OM0ACA -01
092930  +4  996  OM0ACA UT2PC R+11
092945 -13 1901  UT2PC OM0ACA RR73
093000  +5  995  OM0ACA UT2PC 73

10m

UTC    dB Audio  Message
173330 -14 1470  OM0ACA 9A2KS JN65 (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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