OL900CO — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Czech Republic

Receiver-side FT8 activity involving OL900CO, decoded by SO8OO in southeastern Poland. 2,212 related FT8 messages, 977 CQ messages, observed on 80m, 40m, 20m, 10m, across 19 UTC dates. Heard between 2026-05-24 and 2026-08-20.

These are automated observations at the SO8OO receiver, not the station's official logbook. Times are UTC. Decoder S/N describes messages received at SO8OO; inferred entity and location data may be inaccurate for portable, remote or special-event operation.

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Overview

2,212

Related messages

977

CQ messages

UTC dates heard

-2 dB

Mean decoder S/N

Bands

80m 40m 20m 10m

First seen: 2026-05-24
Last seen: 2026-08-20 18:54 UTC

Frequent QSO partners observed at SO8OO

Stations OL900CO worked most often, as logged from our receiver:

LZ67PP · Bulgaria ×8 IU3WNU · Italy ×2 HF85MK · Poland ×2 ER3UA · Moldova SP2LLP · Poland DH7ULX · Fed. Rep. of Germany ER1TX · Moldova CT1CLO · Portugal DL1HDL · Fed. Rep. of Germany UR5ZGY · Ukraine DL1UDO · Fed. Rep. of Germany 8D81RI · Indonesia

Activity Heatmap

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	OL900CO S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-20 20:50	40m	- / -12	R6KX	+1 / -	9	Partial capture
08-20 20:41	40m	- / -7	F5RQQ	-13 / -	3	Partial capture
08-20 20:41	40m	+7 / -	<...>	+6 / -	7	✓ Closing fragment
08-20 20:29	80m	- / -8	DK0ACI	-10 / -	2	Partial capture
08-20 20:28	40m	+9 / -	JA4FKX	- / +6	3	Partial capture
08-20 20:24	80m	- / -16	DL1UDO	-8 / -	4	Partial capture
08-20 20:24	40m	+2 / -11	DG0JJH	-16 / -17	3	Partial capture
08-20 20:23	40m	+2 / -	<...>	-16 / -	3	✓ Closing fragment
08-20 20:22	80m	- / -6	DL1HDL	+5 / -	3	✓ Closing fragment
08-20 20:13	80m	-11 / -6	OK7MZ	-8 / -8	2	Partial capture
08-20 20:11	40m	+3 / +2	F5SJC	-3 / -7	3	Partial capture
08-20 20:08	40m	-2 / -	IV3LAN	- / -15	3	Partial capture
08-20 20:07	40m	+1 / -	<...>	-17 / -	2	✓ Closing fragment
08-20 20:06	40m	-1 / -9	CT2GQA	-18 / -10	3	Partial capture
08-20 20:01	40m	+5 / -	<...>	- / -	5	✓ Closing fragment
08-20 20:01	40m	+6 / -11	OK1VCB	+5 / -8	3	Partial capture
08-20 19:58	40m	0 / -	<...>	-14 / -	2	✓ Closing fragment
08-20 19:52	40m	-4 / -	RX3ASQ	- / -13	2	Partial capture
08-20 19:46	40m	0 / -1	LY4AB	-8 / -2	3	Partial capture
08-20 19:46	40m	0 / -	<...>	-7 / -	9	✓ Closing fragment
08-20 19:45	40m	-2 / +3	HA7KLA	-4 / +1	3	Partial capture
08-20 19:41	40m	-4 / -	<...>	-5 / -	5	✓ Closing fragment
08-20 19:40	80m	-3 / -11	HA7DA	+4 / -7	7	Partial capture
08-20 19:38	80m	+2 / -	CT1CLO	- / -13	6	✓ Closing fragment
08-20 19:38	40m	- / -7	R3XBS	-2 / -	3	Partial capture
08-20 19:34	40m	+5 / 0	SQ5DTL	-7 / -8	4	Partial capture
08-20 19:33	80m	+1 / -13	EB5RCA	-24 / -18	5	Partial capture
08-20 19:33	40m	+2 / -	<...>	+3 / -	6	✓ Closing fragment
08-20 19:29	80m	+3 / +4	OK1LBC	-9 / -6	2	Partial capture
08-20 19:28	80m	+2 / -6	YL3IY	-12 / -20	3	Partial capture
08-20 19:26	40m	- / -	<...>	-4 / -	2	✓ Closing fragment
08-20 19:26	40m	+6 / -	R3XBS	- / -11	2	Partial capture
08-20 19:25	40m	+4 / -	JR1UFN	- / -7	3	✓ Closing fragment
08-20 19:25	80m	+4 / +5	OK1DBE	+1 / +9	2	Partial capture
08-20 19:25	80m	0 / +3	LY1DY	+3 / -5	4	Partial capture
08-20 19:23	80m	+4 / -	<...>	-1 / -	11	✓ Closing fragment
08-20 19:23	40m	+6 / -	G4FHL	- / -16	3	Partial capture
08-20 19:22	80m	0 / -	OH2BGX	- / -20	2	Partial capture
08-20 19:21	40m	+12 / -	<...>	-1 / -	3	✓ Closing fragment
08-20 19:21	80m	+7 / -	DM4SB	-24 / -17	2	Partial capture
08-20 19:20	40m	+7 / +3	DB3MAX	-5 / +6	2	Partial capture
08-20 19:20	80m	+2 / -	DL1UDO	- / -	2	✓ Closing fragment
08-20 19:16	80m	+4 / -	<...>	-7 / -	5	✓ Closing fragment
08-20 18:56	20m	- / -	<...>	-8 / -	2	✓ Closing fragment
08-20 18:56	20m	- / -	EC1KD	-8 / -	2	Partial capture
08-20 18:54	20m	- / -16	PD3LKN	-10 / -	3	Partial capture
08-20 18:47	20m	- / -	EA1AA	-6 / -	2	Partial capture
08-19 20:22	40m	- / -13	S52D	-1 / -	3	Partial capture
08-19 20:01	40m	-14 / -	<...>	-15 / -	5	✓ Closing fragment
08-19 20:00	80m	+6 / -	<...>	+9 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
204830 +11 1306  CQ OL900CO
204900 +12 1306  EA4LT OL900CO R-17
204930  +2 1306  <...> OL900CO 73
205000  +3 1306  CQ OL900CO (x2)
205045  +5  287  OL900CO R6KX -12
205100  +4 1306  CQ OL900CO
205115  +2  288  OL900CO R6KX -12 (x8)

80m

UTC    dB Audio  Message
194800  +1 1587  CQ OL900CO (x4)
201315 -11 1587  OK7MZ OL900CO -08
201330  -8 1588  OL900CO OK7MZ R-06
202245  +5 1003  OL900CO DL1HDL (x3)
202445  -6 1400  OL900CO DL1UDO JO31 (x4)
202915  -9  306  OL900CO DK0ACI -08 (x2)

20m

UTC    dB Audio  Message
195715  -6  462  OL900CO <...> 73 (x3)
184715  -6 1332  OL900CO EA1AA IN83 (x2)
185415 -10 1333  OL900CO PD3LKN JO22 (x3)
185645  -9 1255  <OL900CO> EC1KD IN72
185645  -9 1333  OL900CO <...> 73
185715  -6 1255  OL900CO EC1KD R+13
185745  -8 1255  OL900CO <...> 73 (x3)
191545  +8 2093  OL900CO DJ5FS R-04

10m

UTC    dB Audio  Message
170300  +8 2540  OL900CO <...> RR73 (x5)

Decoder S/N history by band

Daily averages across messages associated with this profile as decoded at SO8OO.