SV3CEZ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Greece Most frequent locator attributed to this token: KM07

Receiver-side FT8 activity involving SV3CEZ, decoded by SO8OO in southeastern Poland. 1,223 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 38 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-20.

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 1,223 FT8 messages attributed to SV3CEZ as the transmitting token by decoded message structure across 38 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (89%), followed by 20 m (5%) and 40 m (5%). Most decodes (74%) fell within the six-hour window 22:00-04:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

1,223

Messages attributed

UTC dates decoded

114

Active 15-min windows

-9 dB

Estimated median S/N

Bands

80m · 1,094 40m · 63 20m · 66

First attributed message: 2026-06-06
Last attributed message: 2026-09-20 00:32 UTC

Observed FT8 message patterns

Attributed sample: 1,223 messages
Active dates: 38 UTC dates
Estimated median S/N: -9 dB
Estimated 10th-90th percentile: -17 to -3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 171, moderate (-15 to -9 dB) 518, strong (≥ -8 dB) 534.

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 SV3CEZ in decoded directed-looking exchanges:

F1PBZ · France ×3 R5AV · European Russia ×3 DO5PY · Fed. Rep. of Germany ×3 ON4MAP · Belgium ×3 CT2GQA · Portugal ×2 DH6MM · Fed. Rep. of Germany ×2 DO1BOC · Fed. Rep. of Germany ×2 F4NGK · France ×2 HB3YBG · Switzerland ×2 IZ5FSO · Italy ×2 SP7FFY · Poland ×2 9A1CCS · Croatia

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.

Most frequent locator attributed to SV3CEZ

The map compares the centres and boundaries of the locator field attributed to this token by decoded message structure, 2° × 1° as a Maidenhead square, and SO8OO's six-character receiver square. The separation is not an exact antenna-to-antenna distance or a radio-path length.

Attributed locator: KM07 · 871 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,384 km (approx.)
Last such locator decoded: 2026-09-20 00:32 UTC

A decoded locator can describe portable, remote or special-event operation and is not proof of a permanent station address or transmitter identity.

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	SV3CEZ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 00:23	80m	-10 / -9	R4FDD	+4 / -1	4	✓ Full exchange observed
09-20 00:19	80m	-10 / -7	IU5TUD	-4 / -7	4	✓ Full exchange observed
09-20 00:09	80m	0 / -5	RC2DD	+1 / -2	5	✓ Full exchange observed
09-20 00:03	80m	-8 / -	9A5BDE	+10 / -	5	✓ Full exchange observed
09-19 23:52	80m	-14 / -7	DH1KJ	+4 / -4	3	✓ Full exchange observed
09-19 23:42	80m	-6 / -12	M0IYK	-6 / -19	6	✓ Full exchange observed
09-19 23:36	80m	-9 / -10	UA9TL	-1 / +2	5	✓ Full exchange observed
09-19 23:29	80m	-6 / -17	LA1PHA	-4 / -5	5	✓ Full exchange observed
09-19 23:26	80m	0 / -16	DO8PAT	+3 / -	4	✓ Closing observed
09-19 23:03	40m	- / -19	IV3KQE	+4 / -	9	✓ Closing fragment
09-19 22:55	40m	- / -13	IU5VLR	-4 / -	2	✓ Closing fragment
09-19 22:53	40m	- / -10	GX3RAF/P	-2 / -	3	✓ Closing fragment
09-19 22:53	80m	- / -	SM7HZK	+6 / -	3	Partial capture
09-19 22:46	80m	-14 / -14	ON4MAP	-8 / -14	5	✓ Full exchange observed
09-19 22:42	80m	-12 / -10	EU1AFX	+4 / -7	10	✓ Full exchange observed
09-18 02:30	80m	-9 / -	DL7UKM	+4 / -7	10	Partial capture
09-18 02:28	80m	-9 / -11	SQ6ELK	+13 / -5	4	✓ Full exchange observed
09-18 02:06	80m	-6 / -14	CT2GQA	-11 / -3	5	✓ Full exchange observed
09-18 02:02	80m	-6 / -11	DO3KTY	+8 / +3	4	✓ Full exchange observed
09-18 01:58	80m	-11 / -13	UA3PAB	-1 / -4	5	✓ Full exchange observed
09-18 01:53	80m	- / -8	ON3MOH	-11 / -	6	✓ Closing fragment
09-18 01:53	80m	- / -	ON4MAP	-14 / -	4	Partial capture
09-17 03:32	40m	-23 / -	YL2EA	- / -14	2	✓ Closing fragment
09-17 03:20	40m	-24 / -8	RV6MX	-6 / -1	4	✓ Full exchange observed
09-17 03:10	40m	- / -19	UA4PDJ	-14 / -	2	✓ Closing fragment
09-17 03:03	80m	- / -	SP3HGD	0 / -	2	Partial capture
09-17 02:49	80m	- / -	DO1OAS	+1 / -	2	Partial capture
09-17 02:47	80m	- / -	SP3HGD	0 / -	2	Partial capture
09-16 18:02	80m	- / -5	LZ5EO	+11 / -	3	✓ Closing fragment
09-16 03:41	80m	- / -8	HA0AA	-24 / -	3	✓ Closing fragment
09-16 03:31	80m	-6 / -5	SP3HGD	-6 / -12	8	✓ Full exchange observed
09-16 03:28	80m	-5 / -15	PA4PA	+10 / -	4	✓ Closing observed
09-14 17:07	40m	- / -	OE6GPD	-6 / -	5	Partial capture
09-14 17:02	40m	- / 0	OE8PIT	-6 / -	4	✓ Closing fragment
09-14 16:56	40m	- / -	IN3FFN	+4 / -	2	Partial capture
09-14 04:45	40m	- / -15	ON1DGN	-15 / -	4	Partial capture
09-13 03:59	80m	-8 / -18	SP7FFY	+15 / -14	4	✓ Full exchange observed
09-13 03:25	80m	- / -10	S52UF	-6 / -	2	Partial capture
09-13 03:12	80m	-11 / -8	OK2PM	-20 / -24	9	Partial capture
09-13 03:08	80m	-12 / -22	YO8XFU	+5 / +3	5	✓ Full exchange observed
09-13 02:58	80m	-7 / -	DL3NGN	-20 / -11	13	Partial capture
09-13 02:56	80m	-7 / -11	DF2NV	0 / +3	3	✓ Full exchange observed
09-13 02:06	80m	-10 / -15	R1AP	+5 / +8	4	✓ Full exchange observed
09-13 02:02	80m	-14 / -8	R4HHN	+1 / +1	5	✓ Full exchange observed
09-13 02:00	80m	-11 / -	DO1RWM	- / -13	3	✓ Closing fragment
09-13 01:51	80m	-11 / -	R4HLO	- / -18	2	✓ Closing fragment
09-11 19:04	40m	- / -9	RA6OF	-6 / -	2	✓ Closing fragment
09-11 03:58	80m	- / -24	ON4MAP	-21 / -	4	✓ Closing fragment
09-11 03:53	80m	-10 / -	DB5GSS	- / -21	3	✓ Closing fragment
09-11 03:51	80m	-8 / -	SP5DFK	- / -16	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
002515  -7 1532  CQ SV3CEZ KM07 (x15)

40m

UTC    dB Audio  Message
024845 -24 1567  CQ SV3CEZ KM07
225300  -2 2430  SV3CEZ GX3RAF/P IO91 (x3)
225530  -5 1536  SV3CEZ IU5VLR R-13 (x2)
230330  +4 1825  SV3CEZ IV3KQE JN65 (x9)

20m

UTC    dB Audio  Message
161700 -10 2821  SV3CEZ JI3CEY PM74 (x6)
162200  +5 1584  SV3CEZ DL2GKW JN47
162430  -7  478  SV3CEZ HB9IUI JN36
165300 -23 1976  SV3CEZ DL6RS JN48
165500  -4 1511  SV3CEZ EA7HTE IM66 (x4)
165715 -24 1311  CQ SV3CEZ KM07 (x2)

60m

UTC    dB Audio  Message
024100 -15 1208  SV3CEZ 4Z4DX KM72

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.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee