DL3JAC — 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: Fed. Rep. of Germany Most frequent locator attributed to this token: JO60

Receiver-side FT8 activity involving DL3JAC, decoded by SO8OO in southeastern Poland. 260 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 23 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-10-30.

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 260 FT8 messages attributed to DL3JAC 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 (58%), followed by 20 m (42%). Several six-hour UTC windows tied for the largest share (98%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (73%); the estimated median was -3 dB.

Overview

260

Messages attributed

UTC dates decoded

Active 15-min windows

-3 dB

Estimated median S/N

Bands

40m · 150 20m · 110

First attributed message: 2026-06-10
Last attributed message: 2026-10-30 14:53 UTC

Observed FT8 message patterns

Attributed sample: 260 messages
Active dates: 23 UTC dates
Estimated median S/N: -3 dB
Estimated 10th-90th percentile: -14 to +6 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 17, moderate (-15 to -9 dB) 54, strong (≥ -8 dB) 189.

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 DL3JAC in decoded directed-looking exchanges:

EX7DY · Kyrgyzstan F5RRS · France JA8CJY · Japan R8AFR · Asiatic Russia TK/F6FDY · Corsica UN0PA · Kazakhstan 9A3SM · Croatia 9A4AA · Croatia 9A4ZM · Croatia DA0LH · Fed. Rep. of Germany DF4JY · Fed. Rep. of Germany DH1NGL · Fed. Rep. of Germany

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 DL3JAC

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: JO60 · 140 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 628 km (approx.)
Last such locator decoded: 2026-10-30 14:52 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	DL3JAC S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-30 14:52	40m	-7 / -	OH6CXP	- / -11	3	✓ Closing fragment
10-30 14:47	40m	-4 / -7	LZ1ZF	-3 / -2	7	✓ Full exchange observed
10-30 14:44	40m	- / -	IU2KNG	0 / -	2	✓ Closing fragment
10-30 14:41	40m	-1 / -	IQ0AK	- / -19	4	✓ Closing fragment
10-26 14:48	40m	-10 / -13	UA9SHH	-17 / -14	8	✓ Full exchange observed
10-26 14:45	40m	- / -	DH1NGL	-11 / -	3	✓ Closing fragment
10-26 14:43	40m	-5 / -7	EU7FBB	-4 / +2	6	✓ Full exchange observed
10-26 13:03	40m	-11 / -	S55X	- / -	3	Partial capture
10-26 12:59	40m	- / 0	DL70ESSEN	-16 / -	2	✓ Closing fragment
10-26 12:56	40m	-3 / -	PD2MAC/P	- / +1	6	Partial capture
10-26 12:53	40m	-3 / -	DL70ESSEN	- / -	2	Partial capture
10-22 16:36	40m	+7 / -4	S51XA	-1 / -1	3	✓ Full exchange observed
10-22 16:33	40m	-5 / -4	RM8L	-1 / -	4	✓ Closing observed
10-22 16:29	40m	0 / -	PE1BOL	- / -13	2	✓ Closing fragment
10-22 16:29	40m	- / -	DL1DCT	-4 / -	2	Partial capture
10-22 16:29	40m	-6 / -5	R2EN	-19 / -6	2	Partial capture
10-22 16:28	40m	+11 / 0	E77D	+2 / 0	4	✓ Full exchange observed
10-22 16:24	40m	+1 / -7	RK4FF	-1 / -2	10	✓ Full exchange observed
10-22 16:23	40m	+2 / -4	YL3CW	-6 / +6	4	✓ Full exchange observed
10-22 16:21	40m	-8 / -17	EX7CQ	-15 / -13	5	✓ Full exchange observed
10-15 16:35	40m	+1 / -	R9CA	- / -13	7	Partial capture
10-15 16:33	40m	+4 / +4	OH3DJP	-13 / -11	4	✓ Full exchange observed
10-15 16:30	40m	-4 / -	R8OAE	- / -12	6	✓ Closing fragment
10-15 16:28	40m	-7 / -	RL2F	- / +4	3	✓ Closing fragment
10-15 16:26	40m	-2 / -21	RA8AF	-14 / -10	6	✓ Full exchange observed
10-08 16:30	40m	-4 / -	F4JKT	- / -	2	Partial capture
09-22 15:28	40m	+1 / -	DF4JY	- / -15	2	Partial capture
09-22 15:27	40m	-2 / +4	S51DD	+2 / +10	5	✓ Full exchange observed
09-22 15:24	40m	0 / +8	HB9ELE	0 / -1	7	✓ Full exchange observed
09-17 16:32	40m	-3 / -4	II9IAGM	-9 / -2	2	Partial capture
09-17 16:30	40m	-3 / -	UA4FEN	-8 / -7	5	✓ Closing observed
09-17 16:28	40m	-6 / -	II0IHMG	- / -7	2	Partial capture
09-17 16:25	40m	-4 / -	HZ1TT	- / -	3	Partial capture
09-17 16:20	40m	0 / -3	HB9OAU	-14 / -	3	✓ Closing observed
09-13 15:03	40m	+2 / -	OL900LTV	- / -	4	Partial capture
09-13 15:00	40m	-3 / -	PD0LBY	-20 / 0	4	✓ Closing observed
09-13 14:57	40m	+9 / -17	9A4AA	-6 / 0	6	✓ Full exchange observed
09-13 14:57	40m	- / -	HG8LXL	-3 / -	3	Partial capture
09-13 14:55	40m	-6 / +3	3Z100PKP	-10 / +7	3	Partial capture
08-30 16:13	40m	+8 / -	DL3LBK	+6 / -	6	✓ Full exchange observed
08-30 16:13	40m	+5 / -	OH/DG2SBL	-8 / -6	5	✓ Closing observed
08-30 16:08	40m	+3 / -3	OE9NET	-10 / -4	8	✓ Full exchange observed
08-30 16:06	40m	+6 / -	R9SAP	- / -	2	Partial capture
08-30 15:23	20m	- / +4	<...>	+5 / -	3	✓ Closing fragment
08-26 16:31	20m	- / -	UN0PA	-10 / -	2	✓ Closing fragment
08-26 16:24	20m	- / -3	F5RRS	+17 / -	3	✓ Closing fragment
08-26 16:23	20m	- / -16	TK/F6FDY	+1 / -	3	✓ Closing fragment
08-16 16:33	40m	-8 / -7	9A3SM	-15 / -	4	✓ Full exchange observed
08-16 16:31	40m	-11 / -	<...>	- / -	2	Partial capture
08-16 16:26	40m	-12 / -	HB9FGO	- / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
144245  -2  780  IQ0AK DL3JAC R-19 (x2)
144430  -4  339  DL3JAC IU2KNG +16 (x2)
144700  +0 1129  DL3JAC LZ1ZF -07
144715  -4 1128  LZ1ZF DL3JAC JO60
144730  -2 1129  DL3JAC LZ1ZF -09
144745  -9 1129  LZ1ZF DL3JAC R-02
144800  -7 1129  DL3JAC LZ1ZF RR73
144815  +1 1129  LZ1ZF DL3JAC R-02 (x2)
144945  -3 1129  DH2NJS DL3JAC RR73
145200  -7 1207  OH6CXP DL3JAC JO60 (x3)

20m

UTC    dB Audio  Message
164200 -14  869  DL3JAC EX7DY RR73
160915 -17 1793  DL3JAC R8AFR RR73
162345  -1 2695  DL3JAC TK/F6FDY -16 (x3)
162445 +18 1876  DL3JAC F5RRS JN36 (x3)
162830  -7 2315  DL3JAC UN0PA -10 (x3)
151815  -4 2932  DL3JAC JA8CJY RR73
152330  +5  378  DL3JAC <...> +04 (x3)

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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