SN40KZE — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland

Receiver-side FT8 activity involving SN40KZE, decoded by SO8OO in southeastern Poland. 10,524 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 23 UTC dates in the available aggregate history. Observed between 2026-07-06 and 2026-09-08.

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 10,524 FT8 messages attributed to SN40KZE as the transmitting token by decoded message structure across 23 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (48%), followed by 80 m (41%) and 60 m (9%). The busiest six-hour window was 20:00-02:00 UTC, containing 39% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (84%); the estimated median was +4.7 dB.

Overview

10,524

Messages attributed

UTC dates decoded

505

Active 15-min windows

+4.7 dB

Estimated median S/N

Bands

160m · 61 80m · 4,335 60m · 969 40m · 5,047 20m · 111 10m · 1

First attributed message: 2026-07-06
Last attributed message: 2026-09-08 18:55 UTC

Observed FT8 message patterns

Attributed sample: 10,524 messages
Active dates: 23 UTC dates
Estimated median S/N: +4.7 dB
Estimated 10th-90th percentile: -12 to +13 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 411, moderate (-15 to -9 dB) 1,277, strong (≥ -8 dB) 8,836.

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 SN40KZE in decoded directed-looking exchanges:

Z335MK · North Macedonia ×6 LZ67PP · Bulgaria ×4 G0ABI · England ×2 HF780C · Poland ×2 RI1FJL · Franz Josef Land ×2 R6YY · European Russia ×2 ER1CW · Moldova ×2 K1ABC · United States ×2 SM5KNV · Sweden ×2 EA7GUK · Spain OZ13JK · Denmark EY35D · Tajikistan

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	SN40KZE S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-08 21:30	40m	- / -	<...>	-8 / -	2	✓ Closing fragment
09-08 21:16	40m	- / +2	G3RKF	-12 / -	3	Partial capture
09-08 19:40	40m	- / -	DH5BM	-4 / -	9	Partial capture
09-08 19:36	80m	- / -17	UB9MEU	-14 / -	2	Partial capture
09-08 18:53	40m	- / -10	F4HEA	+4 / -	4	Partial capture
09-08 18:42	40m	- / -	F4HEA	0 / -	3	Partial capture
09-08 18:39	80m	- / -14	M0IOY	-9 / -	2	Partial capture
09-08 18:34	80m	0 / -16	R1AV	+1 / -12	3	Partial capture
09-08 18:04	40m	- / -10	UA3LRN	-9 / -	5	Partial capture
09-08 17:59	40m	- / -15	RX3VF	+1 / -	2	Partial capture
09-08 17:21	40m	- / -	RN3YN	-14 / -	2	Partial capture
09-08 16:31	40m	- / -1	DL3TC	+13 / -	3	Partial capture
09-08 16:24	40m	- / +1	DL3AWB	+8 / -	2	Partial capture
09-08 16:15	40m	- / +4	I8JPO	-14 / -	4	Partial capture
09-08 15:56	40m	- / -12	DG0AM	+4 / -	2	Partial capture
09-08 15:12	40m	- / -10	RA3DAD	-9 / -	5	Partial capture
09-08 15:04	40m	- / +7	DL2VM	+10 / -	6	Partial capture
09-08 14:54	40m	- / -	DL2VM	+12 / -	10	Partial capture
09-08 14:46	40m	- / -	DL2VM	+11 / -	3	Partial capture
09-08 14:37	40m	- / -	R2HM	-4 / -	2	Partial capture
09-08 14:31	40m	- / -	DK2BK	-16 / -	2	Partial capture
09-08 14:16	40m	- / -11	OM3CND	+5 / -	2	Partial capture
09-08 14:13	40m	- / -	R2HM	0 / -	2	Partial capture
09-08 09:10	40m	0 / -	OZ13JK	- / -	2	✓ Closing fragment
09-08 09:09	40m	- / -17	9A6T	-6 / -	2	Partial capture
09-08 08:46	40m	- / -6	PD0A	-16 / -	2	Partial capture
09-08 08:04	40m	+4 / -	<...>	-8 / -	2	✓ Closing fragment
09-08 08:04	40m	+3 / 0	UZ5CA	-11 / -3	2	Partial capture
09-08 08:03	40m	- / -	OZ6TL	-9 / -	3	Partial capture
09-08 08:00	40m	-1 / -	<...>	-2 / -	2	✓ Closing fragment
09-08 07:59	40m	-4 / -12	DC9JVN	-7 / -15	3	Partial capture
09-08 07:51	40m	- / -	DL8ARJ	-12 / -	4	Partial capture
09-08 07:51	40m	- / +9	IZ4AIF	-8 / -	2	Partial capture
09-08 07:45	40m	-8 / -	<...>	-6 / -	5	✓ Closing fragment
09-08 07:42	40m	-12 / -	OE2VDL	- / -11	2	Partial capture
09-08 07:29	40m	-4 / -	<...>	-9 / -	3	✓ Closing fragment
09-08 07:27	40m	- / +3	SQ1SDX	-7 / -	3	Partial capture
09-08 07:11	40m	-9 / -	<...>	- / -	13	✓ Closing fragment
09-08 07:04	40m	-7 / -3	F4FSY	-18 / -3	3	Partial capture
09-08 07:03	40m	-7 / -	<...>	-15 / -	2	✓ Closing fragment
09-08 07:02	40m	-13 / -	SP3WVL	-11 / -18	2	Partial capture
09-08 06:56	40m	-8 / +10	OH3CCX	-17 / -	2	Partial capture
09-08 06:55	40m	- / 0	F4FSY	-20 / -	2	Partial capture
09-08 06:55	40m	-8 / -	<...>	-8 / -	6	✓ Closing fragment
09-08 06:50	60m	-14 / -	<...>	-22 / -	3	✓ Closing fragment
09-08 06:45	60m	-14 / -	<...>	- / -	5	✓ Closing fragment
09-08 06:39	40m	- / -9	DB1TH	+2 / -	3	Partial capture
09-08 06:36	80m	-6 / -	<...>	- / -	2	✓ Closing fragment
09-08 06:15	80m	-20 / -	<...>	-12 / -	3	✓ Closing fragment
09-08 06:15	80m	-15 / -1	SQ2NUH	-9 / +7	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
063830  -3 1347  CQ SN40KZE (x7)
183430  +4 1066  R1AV SN40KZE -12 (x2)
183515  +1 1067  SN40KZE R1AV R-16
183930 -11  893  SN40KZE M0IOY IO93 (x2)
193615 -16 1361  SN40KZE UB9MEU MO64 (x2)
001215 -13 2564  SN40KZE GM4KHE IO75

40m

UTC    dB Audio  Message
194230  +1 1940  SN40KZE DH5BM JO41 (x5)
211415  +0  845  SN40KZE <...> 73
211615 -15 1925  SN40KZE G3RKF IO83 (x3)
213045  -8 2525  SN40KZE <...> RR73 (x2)
214430 -22 1918  SN40KZE BA4IE OM86 (x2)
220645 -21 1499  SN40KZE <...> RR73 (x2)

60m

UTC    dB Audio  Message
064500 -18 1421  <...> SN40KZE 73
064530 -17 1421  CQ SN40KZE
064600 -15 1421  <...> SN40KZE (x4)
064830 -12 1421  CQ SN40KZE (x2)
065000 -11 1421  <...> SN40KZE RR73
065030 -15 1421  CQ SN40KZE
065100 -16 1421  DC9JVN SN40KZE +03
065130 -16 1421  <...> SN40KZE RR73
065145 -22 1420  SN40KZE <...> 73
065200 -17 1421  CQ SN40KZE (x2)

10m

UTC    dB Audio  Message
094145 -20 2212  SN40KZE <...> 73 (x3)
095445 -13 1880  SN40KZE UR5FBD +06
101145  -5 1879  SN40KZE <...> RR73
101445 -19 1878  SN40KZE ON7IR R+05
102345  -8 1210  SN40KZE <...> 73
103315  -7 1468  <SN40KZE> S55DX +08
103315  -5 1875  SN40KZE <...> 73 (x3)
105400 -21 1969  <...> SN40KZE RR73
105845  -4  770  SN40KZE <...> 73 (x3)

160m

UTC    dB Audio  Message
005500  +1 1333  <...> SN40KZE
005530  -3 1334  GM6URC SN40KZE R-09
005600  -2 1333  <...> SN40KZE 73
005700  +8  775  <W9XYZ> SN40KZE RR73
005715 +10  964  SN40KZE <W9XYZ> 73
005730  +9  775  CQ SN40KZE
005800  +5  775  F1PBZ SN40KZE R+00
005815  -3 2596  SN40KZE <...> RR73
005830  +7  775  W9XYZ SN40KZE 73
005900  +3  775  DF2NV SN40KZE R+03
005915  +0 1065  SN40KZE <...> RR73
005930  +4  775  <...> SN40KZE 73
010000  +6  775  CQ SN40KZE (x3)

20m

UTC    dB Audio  Message
180830 +11 2324  7Z1IP SN40KZE -13
180915 -12  906  SN40KZE <...> 73
181000  -1 2324  HB9MZI SN40KZE -24 (x2)
181330  -8 2324  CQ SN40KZE
181600 -13 2323  <...> SN40KZE (x2)
181700 -11 2324  CQ SN40KZE
181730  -6 2324  <...> SN40KZE
181845 -16 2324  SN40KZE SQ1PQQ JO73
181900  -7 2324  SQ1PQQ SN40KZE -21
182000  -3 2324  BA7SAY SN40KZE -18
182030  +2 2324  <...> SN40KZE RR73
183830  -8 2329  SN40KZE GE0KUC IO91 (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.

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