ON4CHJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Belgium Locator transmitted in a decoded message: JO20

Receiver-side FT8 activity involving ON4CHJ, decoded by SO8OO in southeastern Poland. 116 related FT8 messages, 21 CQ messages, observed on 80m, 20m, across 8 UTC dates. Heard between 2026-06-30 and 2026-08-23.

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

116

Related messages

CQ messages

UTC dates heard

-6 dB

Mean decoder S/N

Bands

80m 20m

First seen: 2026-06-30
Last seen: 2026-08-23 17:20 UTC

Frequent QSO partners observed at SO8OO

Stations ON4CHJ worked most often, as logged from our receiver:

HA1ZW · Hungary DO3HUM · Fed. Rep. of Germany YT3BL · Serbia DO1NJN · Fed. Rep. of Germany DD7EE · Fed. Rep. of Germany DA1ST · Fed. Rep. of Germany SA6DST · Sweden CS8ABF · Azores DO5SB · Fed. Rep. of Germany DO5HOK · Fed. Rep. of Germany DB9LG · Fed. Rep. of Germany DK7ZT · Fed. Rep. of Germany

Activity Heatmap

Locator transmitted by ON4CHJ

Approximate centre of JO20, decoded 2026-08-23 19:20 UTC. A transmitted locator is not proof of the operator's permanent location.

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	ON4CHJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-23 19:15	80m	- / -	DO1DMR	-12 / -	5	Partial capture
08-23 19:15	80m	-10 / -16	DK7ZT	+6 / -7	4	✓ Full exchange observed
08-23 19:14	80m	- / -	DK1FF	-9 / -	8	Partial capture
08-09 10:24	20m	- / -5	HA1ZW	-10 / -	2	✓ Closing fragment
07-27 19:38	80m	- / -	GB4NFN	-24 / -	2	Partial capture
07-27 19:35	80m	-13 / -16	SA6DST	-5 / -15	8	✓ Full exchange observed
07-27 19:27	80m	- / -13	OK/DO4OD	-9 / -	2	Partial capture
07-27 19:20	80m	- / -14	DO5HOK	-12 / -	2	✓ Closing fragment
07-23 14:37	20m	-15 / -22	A61DD	-14 / -15	3	Partial capture
07-13 19:56	40m	-11 / -	9A7KWS	- / -18	2	Partial capture
07-13 19:54	80m	- / -	DL1UDO	+2 / -	4	Partial capture
07-13 19:52	80m	- / -16	DB9LG	-11 / -	2	✓ Closing fragment
07-12 20:33	80m	- / -	DL1UDO	-9 / -	5	Partial capture
07-12 20:33	80m	-10 / -	DO5SB	0 / -	3	✓ Closing observed
07-12 20:33	80m	- / -	HG8LXL	+5 / -	2	Partial capture
07-12 20:29	80m	-17 / +1	DO1NJN	-12 / -	5	✓ Closing observed
07-12 20:29	80m	- / -	DO9BAU	-1 / -	12	Partial capture
07-12 20:28	80m	- / -9	DD7EE	0 / -	3	✓ Closing fragment
07-12 20:25	80m	- / -14	DO3HUM	+10 / -	3	✓ Closing fragment
07-12 20:22	80m	-12 / -6	DL3KF	-1 / -2	5	✓ Full exchange observed
07-12 20:19	80m	- / -13	DA1ST	+4 / -	4	✓ Closing fragment
07-12 20:17	80m	-11 / -9	DK4FH	-3 / -6	6	✓ Full exchange observed
07-12 20:16	80m	- / -	DL1UDO	-12 / -	3	Partial capture
07-12 20:14	80m	-12 / -2	ON1BH	-16 / +4	2	Partial capture
07-12 20:10	80m	-11 / -10	YT3BL	+10 / -11	5	✓ Full exchange observed
06-30 19:56	80m	- / -12	DJ2CR	-5 / -	5	Partial capture
06-30 19:20	20m	- / -10	UA4FEN	+4 / -	2	Partial capture
06-30 19:19	20m	- / -	EA3HMM	+8 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
191615 -17 1960  ON4CHJ DO1DMR JO40
191630 -11  680  CQ ON4CHJ JO20
191645  -9 1390  ON4CHJ DK1FF JO50
191645 -10 1960  ON4CHJ DO1DMR JO40
191700 -13  681  CQ ON4CHJ JO20
191715 -10 1390  ON4CHJ DK1FF JO50
191715 -11 1960  ON4CHJ DO1DMR JO40
191730 -15  681  CQ ON4CHJ JO20
191745  -9 1960  ON4CHJ DO1DMR JO40
191800 -23  681  CQ ON4CHJ JO20
191845 -10 1390  ON4CHJ DK1FF JO50
191900 -17  680  CQ ON4CHJ JO20 (x3)
192015  -7 1978  ON4CHJ IQ4JO JN63

20m

UTC    dB Audio  Message
191930 +12  304  ON4CHJ EA3HMM JN00
192000  +7  867  ON4CHJ UA4FEN -10
192000  +7  304  ON4CHJ EA3HMM JN00
192030  +1  866  ON4CHJ UA4FEN -10
192030  +6  304  ON4CHJ EA3HMM JN00
143715 -17  871  A61DD ON4CHJ JO20
143730 -14 1057  ON4CHJ A61DD -22
143745 -13  871  A61DD ON4CHJ R-15
142430 -13  867  RA4AG ON4CHJ JO20
170745  -8 1123  ON4CHJ CS8ABF RR73
055730 -11  870  RX3ASQ ON4CHJ JO20
102400  -9 1368  ON4CHJ HA1ZW -05 (x2)

40m

UTC    dB Audio  Message
195645 -11  754  9A7KWS ON4CHJ JO20 (x2)

Decoder S/N history by band

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