OH3OJ/1 — 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: Finland

Receiver-side FT8 activity involving OH3OJ/1, decoded by SO8OO in southeastern Poland. 343 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-08-08 and 2026-08-12.

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 343 FT8 messages attributed to OH3OJ/1 as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (87%), followed by 40 m (9%) and 20 m (4%). Several six-hour UTC windows tied for the largest share (71%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (76%); the estimated median was -3 dB.

Overview

343

Messages attributed

UTC dates decoded

Active 15-min windows

-3 dB

Estimated median S/N

Bands

80m · 297 40m · 32 20m · 14

First attributed message: 2026-08-08
Last attributed message: 2026-08-12 03:39 UTC

Observed FT8 message patterns

Attributed sample: 343 messages
Active dates: 5 UTC dates
Estimated median S/N: -3 dB
Estimated 10th-90th percentile: -14 to +5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 23, moderate (-15 to -9 dB) 60, strong (≥ -8 dB) 260.

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 OH3OJ/1 in decoded directed-looking exchanges:

RT25KS · European Russia ×3 JH2FXK · Japan ×2 OA4ENG · Peru 8S7DL · Sweden DL1DXX · Fed. Rep. of Germany DO4ZT · Fed. Rep. of Germany OK1VK · Czech Republic RA3X · European Russia RC6OD · European Russia SP8NR · Poland SQ2BXI · 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.

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	OH3OJ/1 S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-12 03:59	80m	- / -	<...>	-2 / -	2	✓ Closing fragment
08-12 03:37	80m	-22 / -	<...>	0 / -	4	✓ Closing fragment
08-12 03:33	80m	+1 / -16	HB9ALO	-16 / -12	3	Partial capture
08-12 03:32	80m	-3 / -	<...>	-1 / -	6	✓ Closing fragment
08-12 03:27	80m	-8 / -7	DJ4WM	+1 / -5	3	Partial capture
08-12 03:26	80m	-10 / -	<...>	-7 / -	5	✓ Closing fragment
08-12 03:17	80m	+1 / -5	OZ1KEF	+14 / +4	2	Partial capture
08-12 03:16	80m	-5 / -	<...>	+9 / -	9	✓ Closing fragment
08-12 03:09	80m	-11 / -	<...>	+12 / -	4	✓ Closing fragment
08-12 02:57	80m	- / -	OH3OJ	-13 / -	3	Partial capture
08-12 02:57	80m	-11 / -	<...>	+1 / -	2	✓ Closing fragment
08-12 02:49	80m	-9 / -	<...>	-4 / -	4	✓ Closing fragment
08-11 20:32	40m	- / -	<...>	-10 / -	3	✓ Closing fragment
08-11 05:18	40m	- / -13	9A7BB	-15 / -	2	Partial capture
08-11 04:03	80m	- / -	<...>	+2 / -	2	✓ Closing fragment
08-11 03:53	80m	-24 / -12	SP6FME	+6 / -2	3	Partial capture
08-11 03:48	80m	-23 / -	<...>	-11 / -	9	✓ Closing fragment
08-11 03:41	80m	-24 / -	<...>	-18 / -	3	✓ Closing fragment
08-10 20:07	80m	-1 / -	RA0SCA	- / -11	2	Partial capture
08-10 20:05	80m	+2 / -	<...>	-5 / -	7	✓ Closing fragment
08-10 20:02	80m	-4 / -	JF2SQB	- / -13	2	Partial capture
08-10 20:01	80m	-2 / -	<...>	-6 / -	3	✓ Closing fragment
08-10 20:00	80m	-2 / -8	PA2REH	-16 / -4	2	Partial capture
08-10 19:58	80m	-4 / -	R2UC	- / 0	2	Partial capture
08-10 19:58	80m	0 / -	JH2FXK	- / -15	3	✓ Closing fragment
08-10 19:56	80m	+2 / -	<...>	-12 / -	4	✓ Closing fragment
08-10 19:50	80m	+4 / -8	RZ4M	-5 / -2	3	Partial capture
08-10 19:43	80m	0 / -	SQ9CXC	- / -3	2	Partial capture
08-10 19:42	80m	0 / -	<...>	-3 / -	16	✓ Closing fragment
08-10 19:30	40m	- / -	<...>	-12 / -	2	✓ Closing fragment
08-10 19:17	40m	- / -10	UT7IA	-6 / -	3	Partial capture
08-10 19:03	40m	- / -	UT7IA	-6 / -	2	Partial capture
08-10 18:56	40m	-11 / -	<...>	-5 / -	2	✓ Closing fragment
08-10 18:41	40m	- / -	<...>	-1 / -	2	✓ Closing fragment
08-10 14:01	20m	- / -13	T77RN	-4 / -	6	Partial capture
08-10 14:01	20m	- / -	<...>	0 / -	2	✓ Closing fragment
08-10 12:13	20m	- / -13	RA3DAD	-21 / -	3	Partial capture
08-10 06:02	40m	- / -	<...>	-6 / -	2	✓ Closing fragment
08-10 04:45	40m	- / -	<...>	-14 / -	3	✓ Closing fragment
08-10 04:36	40m	- / -	<...>	-2 / -	2	✓ Closing fragment
08-10 04:04	40m	- / -	<...>	-12 / -	2	✓ Closing fragment
08-10 03:55	80m	- / -	<...>	+14 / -	2	✓ Closing fragment
08-10 03:46	80m	-14 / -	<...>	-15 / -	5	✓ Closing fragment
08-09 20:21	80m	- / -7	RA1WP	+2 / -	2	Partial capture
08-09 20:16	80m	- / +9	RA3TVW	+2 / -	2	Partial capture
08-09 19:55	80m	+2 / -	RL2F	- / +4	2	Partial capture
08-09 19:53	80m	+7 / -	JE6WOQ	- / -9	2	Partial capture
08-09 19:51	80m	- / -19	DF3YG	-8 / -	2	Partial capture
08-09 19:48	80m	+7 / -	<...>	+7 / -	8	✓ Closing fragment
08-09 19:47	80m	+4 / -7	R3PLA	0 / -2	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
060230 -23 1415  OH3OJ/1 <...> RR73 (x8)
203030 -14 2633  BA4OO OH3OJ/1 R-15
203245 -17 1969  OH3OJ/1 <...> 73 (x2)
203445 -12 1968  OH3OJ/1 F5LOW -09
203515 -14 1969  OH3OJ/1 <...> RR73 (x2)
050815 -23 1905  OH3OJ/1 <OA4ENG> 73

80m

UTC    dB Audio  Message
033415  -2 2799  <...> OH3OJ/1 RR73
033430 -10 1052  OH3OJ/1 <...> 73
033700 -24 2247  <...> OH3OJ/1 RR73
033715  -3 2245  OH3OJ/1 <...> 73
033845 -19 2307  <...> OH3OJ/1 RR73
033900  +4 1199  OH3OJ/1 <...> 73
033915  -7 2306  CQ OH3OJ/1
033945 -11 2307  SQ9EJ OH3OJ/1 R-12
035945 -15 1200  OH3OJ/1 <...> 73 (x7)

20m

UTC    dB Audio  Message
140130 -10  494  OH3OJ/1 T77RN -13 (x3)
140230  +4  272  OH3OJ/1 <...> 73
140300  -3  494  OH3OJ/1 T77RN -11 (x3)
141630 -12 1966  OH3OJ/1 <...> RR73 (x6)
152245 -19 2228  OH3OJ/1 TF4M -05
152745  -6  580  OH3OJ/1 <...> 73

10m

UTC    dB Audio  Message
080145 -15 1127  OH3OJ/1 <...> 73 (x4)

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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