OZ13JK — 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: Denmark

Receiver-side FT8 activity involving OZ13JK, decoded by SO8OO in southeastern Poland. 60 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 13 UTC dates in the available aggregate history. Observed between 2026-07-29 and 2026-10-03.

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 60 FT8 messages attributed to OZ13JK 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 (50%), followed by 60 m (33%) and 80 m (15%). Most decodes (95%) fell within the six-hour window 21:00-03:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -17 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-17 dB

Estimated median S/N

Bands

80m · 9 60m · 20 40m · 30 20m · 1

First attributed message: 2026-07-29
Last attributed message: 2026-10-03 02:35 UTC

Observed FT8 message patterns

Attributed sample: 60 messages
Active dates: 13 UTC dates
Estimated median S/N: -17 dB
Estimated 10th-90th percentile: -23 to -9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 33, moderate (-15 to -9 dB) 21, strong (≥ -8 dB) 6.

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 OZ13JK in decoded directed-looking exchanges:

SM/DB9LG · Sweden ×3 RO2E/M · European Russia ×2 SN40KZE · Poland ×2 SQ100PKP · Poland ×2 SN31ROT · Poland ×2 UB3ADO/P · European Russia ×2 R8AIM/4 · Asiatic Russia IR7MGGC · Italy YR700SM · Romania 9A/G3VCQ · Croatia DA125RH · Fed. Rep. of Germany HF100PKP · 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	OZ13JK S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-03 02:49	160m	- / -	R9CS/P	+10 / -	2	Partial capture
10-03 02:34	80m	-22 / -	UB3ADO/P	- / -	2	Partial capture
09-17 00:59	80m	-23 / -	RD1A/7	+16 / -	2	✓ Closing observed
09-12 21:27	60m	-8 / -	II7IABB	- / -	3	Partial capture
09-08 09:10	40m	- / -	SN40KZE	0 / -	2	✓ Closing fragment
09-01 01:49	60m	-16 / -	<...>	- / -	2	Partial capture
08-25 21:13	60m	-8 / -	DL3KR	-6 / -	3	✓ Closing observed
08-25 21:11	60m	-10 / -	ER1CW	- / -	2	✓ Closing fragment
08-25 21:06	60m	-18 / -	<...>	-14 / -	2	✓ Closing fragment
08-25 20:54	60m	- / -	<...>	+4 / -	2	✓ Closing fragment
08-25 20:54	60m	- / -6	SP9UPH	+2 / -	2	Partial capture
08-25 19:56	20m	- / -	<...>	-3 / -	2	✓ Closing fragment
08-24 21:58	40m	-16 / -	<...>	+2 / -	6	✓ Closing fragment
08-24 07:42	20m	-13 / -	<...>	-9 / -	3	✓ Closing fragment
08-21 21:50	40m	+1 / -	<...>	+12 / -	3	✓ Closing fragment
08-02 00:17	20m	- / -	<...>	-13 / -	2	✓ Closing fragment
07-31 22:11	40m	- / -	<...>	-11 / -	5	✓ Closing fragment
07-29 02:26	40m	- / -	<...>	-8 / -	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
093715  +0  783  <OZ13JK> DL6UM JO60
093815  +1  783  OZ13JK SQ100PKP 73
210545 -17 1765  CQ OZ13JK
231945  +1  768  OZ13JK SQ2RBY/P 73
233530 -24 1485  CQ OZ13JK
004615 +10 2383  OZ13JK SP0YAGI 73
004845  -1 1653  OZ13JK VA3QSL/P 73
003615  +4 1952  OZ13JK ON/DG7LAG/P RR73
153745  -8 2431  OZ13JK 9A/G3VCQ 73
154900 -18 1600  CQ OZ13JK
155000 -21 1600  HF100PKP OZ13JK RR73
155015  +0 1599  OZ13JK R5QO/QRP 73
003145 -17 1932  OZ13JK UT8IIV/P 73
044015  -5  673  OZ13JK R0QBB/3 73
174145  +8 2666  OZ13JK DA125RH RR73

160m

UTC    dB Audio  Message
005730  +5 2362  OZ13JK R8AIM/4 RR73
014030 +10  668  OZ13JK RO2E/M RR73 (x2)
024915 +11 1822  OZ13JK R9CS/P RRR (x2)

80m

UTC    dB Audio  Message
230030 -12  560  CQ OZ13JK (x3)
221000  +3 2679  OZ13JK UB3ADO/P RR73
005930 -23 2429  RD1A/7 OZ13JK RR73
005945 +16 2429  OZ13JK RD1A/7 73
010000 -22 2429  CQ OZ13JK
010045  -5 1107  OZ13JK II7IABB RR73
012030 -24 2170  EM70WWW OZ13JK
013400 -23  581  SN40KZE OZ13JK
022030  +7 1073  OZ13JK UB3ADO/P RR73
023000  +6 2453  OZ13JK YU65AEC RR73
023430 -23 2287  UB3ADO/P OZ13JK (x2)
023745  +4 2215  OZ13JK YU65AEC 73

60m

UTC    dB Audio  Message
211500  -8  691  DL3KR OZ13JK RR73
211515  -6  691  OZ13JK DL3KR 73
211730 -11  534  CQ OZ13JK
014945 -17 1762  <...> OZ13JK (x2)
221115  +7 2352  OZ13JK SN40KZE 73
221600 -17 1414  CQ OZ13JK
221700 -21 1414  F6JON/QRP OZ13JK RR73
221715  -9  957  OZ13JK TM60LOUV 73
221730 -16 1414  CQ OZ13JK (x2)
212745 -10 1090  II7IABB OZ13JK (x3)
233430  -8 1258  CQ OZ13JK

20m

UTC    dB Audio  Message
014945  -9  665  OZ13JK <...> 73 (x4)
190115  -3 2572  OZ13JK YR700SM RR73
221815 -21 1203  OZ13JK <...> 73 (x5)
074300 -13 2308  <...> OZ13JK 73
074445  +2 2308  OZ13JK <...> 73 (x3)
152430  +0 1533  OZ13JK IR7MGGC RR73

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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