SV8NAJ — 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: Greece Most frequent locator attributed to this token: KM07

Receiver-side FT8 activity involving SV8NAJ, decoded by SO8OO in southeastern Poland. 2,653 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 102 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-23.

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 2,653 FT8 messages attributed to SV8NAJ as the transmitting token by decoded message structure across 102 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (46%), followed by 40 m (23%) and 20 m (23%). Most decodes (55%) fell within the six-hour window 13:00-19:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -15 dB.

Overview

2,653

Messages attributed

102

UTC dates decoded

502

Active 15-min windows

-15 dB

Estimated median S/N

Bands

160m · 9 80m · 191 60m · 1,209 40m · 616 20m · 606 10m · 22

First attributed message: 2026-06-06
Last attributed message: 2026-10-23 18:23 UTC

Observed FT8 message patterns

Attributed sample: 2,653 messages
Active dates: 102 UTC dates
Estimated median S/N: -15 dB
Estimated 10th-90th percentile: -21 to -7 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1,263, moderate (-15 to -9 dB) 1,032, strong (≥ -8 dB) 358.

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 SV8NAJ in decoded directed-looking exchanges:

F4HSB · France ×9 CT2GQA · Portugal ×4 CT7BRV · Portugal ×3 OK1CI · Czech Republic ×3 PA3GDL · Netherlands ×2 DL6MRM · Fed. Rep. of Germany ×2 DL7ARV · Fed. Rep. of Germany ×2 EA5FQ · Spain ×2 HB9HSA · Switzerland ×2 IZ4AIF · Italy ×2 RO6OP · European Russia ×2 DF0TZ · Fed. Rep. of Germany ×2

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 SV8NAJ

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 · 1,025 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,384 km (approx.)
Last such locator decoded: 2026-10-23 18:20 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	SV8NAJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-23 18:21	60m	-18 / -14	DL3FDD	-16 / -17	4	✓ Full exchange observed
10-23 18:20	60m	-11 / -10	YL3NU	-14 / -15	4	✓ Full exchange observed
10-23 18:20	60m	-20 / -	SV1SUO	-6 / -17	6	✓ Closing observed
10-23 18:15	60m	-13 / +2	YL3KW	-6 / -14	4	✓ Full exchange observed
10-23 18:10	60m	-14 / -	SP7ROH	- / -6	2	✓ Closing fragment
10-23 17:49	60m	- / -1	OH7TV	-2 / -	2	✓ Closing fragment
10-23 17:40	60m	-18 / -3	OE1TKW	-20 / -2	4	✓ Full exchange observed
10-23 17:28	60m	-18 / -3	OE3KNS	+3 / -15	4	✓ Full exchange observed
10-23 17:18	60m	-16 / -	DL2HRT	-14 / -18	3	Partial capture
10-23 17:18	60m	- / -	F4FHM/QRP	-18 / -	3	Partial capture
10-23 17:16	60m	-18 / -	OE1TKW	- / -19	2	Partial capture
10-23 17:14	60m	-15 / -15	G4DBW	+3 / -11	5	✓ Full exchange observed
10-23 17:10	60m	-14 / -	EW6DO	- / -21	2	Partial capture
10-23 17:06	60m	-17 / -8	OE9HGV	-6 / -6	4	✓ Full exchange observed
10-23 17:05	60m	-14 / -3	LY8O	-2 / -2	5	✓ Full exchange observed
10-23 13:51	10m	- / -18	CT7BRV	+8 / -	2	✓ Closing fragment
10-23 05:46	40m	- / -6	IK3OBX	-14 / -	2	Partial capture
10-23 05:31	40m	- / -13	OV9A	-8 / -	2	✓ Closing fragment
10-23 04:36	80m	- / -11	9A2LM	-12 / -	2	✓ Closing fragment
10-23 04:34	80m	- / -14	DO2NM	-10 / -	2	✓ Closing fragment
10-23 04:32	80m	-19 / -15	F1ICS	+4 / -	4	✓ Closing observed
10-23 04:31	80m	- / -	DL6UM	+3 / -	7	Partial capture
10-23 04:19	80m	-18 / -16	HB9IRO	-1 / -19	5	✓ Full exchange observed
10-23 04:19	80m	- / -	YO8XFU	-5 / -	2	Partial capture
10-23 04:13	80m	- / -3	HB9IRO	-2 / -	2	Partial capture
10-23 03:56	80m	- / -	DL5MRK	+6 / -	3	Partial capture
10-23 03:53	80m	- / -	DO1OAS	-4 / -	5	Partial capture
10-23 03:49	80m	- / -12	EA3NE	-8 / -	2	✓ Closing fragment
10-23 03:48	80m	- / -6	F5OWT	0 / -	2	✓ Closing fragment
10-23 03:41	80m	-24 / -5	ON1JP	-20 / -16	6	Partial capture
10-23 03:25	60m	-20 / -	HI3K	- / -	3	✓ Closing fragment
10-23 03:20	60m	-19 / -8	EA8AE	-16 / -14	3	✓ Full exchange observed
10-23 03:19	60m	-20 / -	EP2AES	- / -5	2	Partial capture
10-22 17:55	60m	-18 / -7	PA3GDL	+2 / -4	5	✓ Full exchange observed
10-22 17:53	60m	-15 / +1	S58X	-6 / -4	4	✓ Full exchange observed
10-22 17:50	60m	-18 / -	IK3VUT	-3 / -2	4	✓ Full exchange observed
10-22 17:49	60m	- / -10	DG3KCW	-9 / -	2	✓ Closing fragment
10-22 17:46	60m	-16 / -	IK8OXQ	- / -1	2	✓ Closing fragment
10-22 17:45	60m	-16 / -4	DL8EX	-12 / -10	3	✓ Full exchange observed
10-22 17:36	60m	-18 / -6	OM1TD	-8 / -5	4	✓ Full exchange observed
10-22 17:32	60m	-18 / -	HA5UB	- / -9	2	Partial capture
10-22 17:30	60m	-16 / -	OZ1AKN	- / -17	2	✓ Closing fragment
10-22 17:24	60m	-14 / -3	OV9A	-8 / -6	4	✓ Full exchange observed
10-22 17:13	80m	- / -13	OE1KRQ/P	+5 / -	3	✓ Closing fragment
10-22 17:12	80m	- / -17	OE3KJO	+2 / -	2	✓ Closing fragment
10-22 17:07	60m	-16 / 0	IZ0RPS	-5 / -5	5	✓ Full exchange observed
10-22 16:27	60m	-18 / -18	G4RJS	-10 / -18	7	✓ Full exchange observed
10-22 16:22	60m	-17 / 0	F4GGJ	-8 / -3	5	✓ Full exchange observed
10-22 06:52	40m	- / -15	YO8DFF	+5 / -	3	Partial capture
10-22 05:13	40m	-20 / -	TA3TY	- / -12	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
182000  -5 1134  SV8NAJ SV1SUO KM17
182015  -8 1761  CQ SV8NAJ KM07
182030 -14 1616  SV8NAJ YL3NU -10
182030  -6 1134  SV8NAJ SV1SUO KM17
182045  -7 1761  YL3NU SV8NAJ R-15
182100 -13 1616  SV8NAJ YL3NU RR73
182100  -7 1133  SV8NAJ SV1SUO KM17
182115 -15 1761  YL3NU SV8NAJ 73
182130 -19 1909  SV8NAJ DL3FDD JO40
182145 -19 1760  SV1SUO SV8NAJ -17
182230  -6 1134  SV8NAJ SV1SUO 73
182245 -21 1761  SV1SUO SV8NAJ RR73
182315 -20 1761  DL3FDD SV8NAJ -17
182330 -13 1909  SV8NAJ DL3FDD R-14
182345 -16 1760  DL3FDD SV8NAJ RR73

10m

UTC    dB Audio  Message
082600 -13 1266  SV8NAJ PA3CGJ 73
081345  -7 2656  SV8NAJ ON3PVC R-15 (x3)
113900 -24 1807  SV8NAJ RJ6ON -19
165845  +0  498  SV8NAJ PA3GDL JO22 (x3)
112345 -18 2033  SV8NAJ <...> R-10
151745  +1 1066  SV8NAJ IU2EBR R-05 (x2)
123845  -8 1760  SV8NAJ CS7CDZ R-20 (x2)
135100  +9 1148  SV8NAJ CT7BRV R-18 (x2)

40m

UTC    dB Audio  Message
050630 -15 1765  CQ SV8NAJ KM07
050845  -8 1766  G0ODR/P SV8NAJ -14
051345 -21 1766  TA3TY SV8NAJ -12 (x2)
065245  -1 2410  SV8NAJ YO8DFF R-15 (x3)
171930 -13 1688  SV8NAJ OR1A 73
044315 -14 1766  R5VCW SV8NAJ -21
044745 -21 1766  F4NGK SV8NAJ -12
053130 -10  733  SV8NAJ OV9A R-13 (x2)
054115 -17 1767  SV8NAJ HB9AKP JN36
054600 -15 1935  SV8NAJ IK3OBX R-06 (x2)

80m

UTC    dB Audio  Message
043145  +1  873  SV8NAJ DL6UM JO60
043215  +2  480  SV8NAJ F1ICS IN94
043215  +5  873  SV8NAJ DL6UM JO60
043245  +1  480  SV8NAJ F1ICS R-15
043245  +2  873  SV8NAJ DL6UM JO60
043300 -19 1731  F1ICS SV8NAJ RR73
043315  +8  480  SV8NAJ F1ICS 73
043315  +8  873  SV8NAJ DL6UM JO60 (x3)
043430 -10  687  SV8NAJ DO2NM R-14
043445  +5  873  SV8NAJ DL6UM JO60
043500 -10  687  SV8NAJ DO2NM 73
043630 -13 1301  SV8NAJ 9A2LM R-11 (x2)

160m

UTC    dB Audio  Message
174615 -20 1725  CQ SV8NAJ KM07
174630  -1 1921  SV8NAJ DK3UA JO64 (x4)
034345  +0  494  SV8NAJ HA5AO R-01
034400 -18 1726  HA5AO SV8NAJ -16
034415  -3  495  SV8NAJ HA5AO R+01
034430 -23 1726  HA5AO SV8NAJ RR73
034445  -3  495  SV8NAJ HA5AO 73
034530 -18 1726  CQ SV8NAJ KM07 (x5)

20m

UTC    dB Audio  Message
053500 -13 1800  SP2SGZ SV8NAJ -10 (x3)
053815  -8 1800  EA5JXP SV8NAJ -13 (x2)
054030  -4 2305  SV8NAJ RZ3O R-15
054045 -15 1800  UX5UW SV8NAJ RR73
054100 -11 2305  SV8NAJ RZ3O R-15
054145 -11 1800  RZ3O SV8NAJ RR73 (x2)
054230 -20 2305  SV8NAJ RZ3O 73
055400 -13 2644  SV8NAJ G1HJW R-18 (x2)
055900 -11 1799  ON5JDA SV8NAJ RR73
061115 -21 1800  SV8NAJ F4IEW JN19

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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