DJ4ZC — 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: JO40

Receiver-side FT8 activity involving DJ4ZC, decoded by SO8OO in southeastern Poland. 115 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 10 UTC dates in the available aggregate history. Observed between 2026-07-27 and 2026-10-11.

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 115 FT8 messages attributed to DJ4ZC as the transmitting token by decoded message structure across 10 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (50%), followed by 20 m (29%) and 60 m (16%). Most decodes (54%) fell within the six-hour window 08:00-14:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (77%); the estimated median was -6 dB.

Overview

115

Messages attributed

UTC dates decoded

Active 15-min windows

-6 dB

Estimated median S/N

Bands

160m · 1 80m · 4 60m · 18 40m · 1 20m · 33 10m · 58

First attributed message: 2026-07-27
Last attributed message: 2026-10-11 18:33 UTC

Observed FT8 message patterns

Attributed sample: 115 messages
Active dates: 10 UTC dates
Estimated median S/N: -6 dB
Estimated 10th-90th percentile: -13 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 9, moderate (-15 to -9 dB) 17, strong (≥ -8 dB) 89.

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 DJ4ZC in decoded directed-looking exchanges:

3A2MW · Monaco 4X1UF · Israel DN9BT · Fed. Rep. of Germany ER3CT · Moldova HB9IRO · Switzerland LX1NO · Luxembourg S55A · Slovenia SP9ENV · Poland SP9MOC · Poland YB1KXV · Indonesia YB2AYA · Indonesia 9A4ZM · 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 DJ4ZC

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: JO40 · 54 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 911 km (approx.)
Last such locator decoded: 2026-10-11 18:28 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	DJ4ZC S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-11 18:32	60m	-8 / -	F4AYI	0 / +10	3	Partial capture
10-11 18:31	60m	-7 / -	9A4ZM	+6 / -	3	Partial capture
10-11 18:31	60m	-6 / -12	F5RRS	+4 / -	5	✓ Full exchange observed
10-11 18:30	60m	-10 / -	PE1NPS	- / +7	2	✓ Closing fragment
10-11 18:22	60m	-8 / -	9H6C	-24 / -19	11	✓ Closing observed
09-26 06:54	10m	-19 / -	VK1DO	- / -11	2	Partial capture
09-26 06:46	10m	-22 / -	RA3XDX	- / -	2	Partial capture
09-23 18:14	80m	+2 / -	RI1FJZ	- / -	3	Partial capture
08-22 08:58	20m	-6 / -	9Y4DG	- / -12	4	✓ Closing fragment
08-22 08:55	20m	-12 / -18	3A2MW	-12 / -24	5	Partial capture
08-21 13:35	10m	-4 / -	MI7RDK	- / -4	2	Partial capture
08-21 13:31	10m	-8 / -	YB2AYA	- / -20	2	✓ Closing fragment
08-21 13:30	10m	-9 / -	HB9IRO	- / -4	2	✓ Closing fragment
08-21 13:28	10m	-8 / -	YB1KXV	- / -11	3	✓ Closing fragment
08-21 13:18	10m	-6 / -	SP9ENV	- / -8	7	✓ Closing fragment
08-21 13:16	10m	-7 / -	4X1UF	- / -18	4	✓ Closing fragment
08-13 19:56	20m	0 / -	N1SK	- / -11	2	✓ Closing fragment
08-13 19:45	20m	-3 / -	BU2FW	- / -17	4	✓ Closing fragment
08-13 19:36	20m	-3 / +4	EI2JHB	-11 / -1	4	✓ Full exchange observed
08-12 13:05	10m	0 / -13	DN9BT	-3 / -9	6	✓ Full exchange observed
08-12 13:05	10m	-2 / -	9J2FI	- / -	6	Partial capture
08-12 13:00	10m	-7 / -20	S55A	-10 / -21	7	✓ Full exchange observed
08-12 12:56	10m	-6 / -	S55A	- / -	2	Partial capture
08-12 12:54	10m	-3 / -	SP9MOC	- / +5	2	✓ Closing fragment
08-12 12:51	10m	-3 / -11	LX1NO	+3 / -10	7	✓ Full exchange observed
08-12 12:49	10m	0 / -	ER3CT	- / +8	3	✓ Closing fragment
08-12 12:48	10m	0 / -	LX1NO	- / -	2	Partial capture
08-12 12:45	10m	+1 / -	3A2MW	- / -10	3	✓ Closing fragment
08-11 07:03	20m	-8 / -	IK2IKW	-7 / +10	3	✓ Full exchange observed
08-11 07:02	20m	-3 / -	R2EA	- / -6	2	✓ Closing fragment
08-11 06:58	20m	-5 / -	V31MA	- / -7	4	Partial capture

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
182930 -24 1410  DJ4ZC 9H6C RR73
182945  -7 1256  9H6C DJ4ZC 73
183015 -10 1255  PE1NPS DJ4ZC +07 (x2)
183100  +4 1963  DJ4ZC F5RRS JN36
183100  +6 1251  DJ4ZC 9A4ZM JN86
183115  -8 1255  F5RRS DJ4ZC +16
183130  +4 1963  DJ4ZC F5RRS R-12
183145  -5 1255  F5RRS DJ4ZC RR73
183200  +3 1963  DJ4ZC F5RRS 73
183200  +0 1092  DJ4ZC F4AYI JN08
183215  -7 1256  9A4ZM DJ4ZC +11 (x2)
183315 -11 1256  F4AYI DJ4ZC +10 (x2)

10m

UTC    dB Audio  Message
132845 -12 1421  YB1KXV DJ4ZC R-11 (x2)
133015  -8 1421  HB9IRO DJ4ZC -04 (x2)
133145  -7 1421  YB2AYA DJ4ZC -20 (x2)
133515  -4 1366  MI7RDK DJ4ZC JO40 (x2)
134345  -3 1366  OZ7FOC DJ4ZC JO40
064615 -21 1713  RA3XDX DJ4ZC JO40 (x2)
065130 -17 1713  VK1DO DJ4ZC JO40 (x3)
091745  -1 2970  DJ4ZC 9J2FI -01

160m

UTC    dB Audio  Message
185345  -4 1599  RI1FJZ DJ4ZC JO40

40m

UTC    dB Audio  Message
182645 -22 1868  RI1FJZ DJ4ZC JO40

80m

UTC    dB Audio  Message
181445  +4 1351  RI1FJZ DJ4ZC JO40
181500  +1  963  DJ4ZC R2EA/P -11
181515  -1 1351  RI1FJZ DJ4ZC JO40 (x3)

20m

UTC    dB Audio  Message
194730  -8 2334  RD3ADW DJ4ZC -11
194830 -10 2333  BG5JGG DJ4ZC -13
195100 -14 2334  BG7BVI DJ4ZC R-07
195645  +3 2538  N1SK DJ4ZC R-11 (x2)
085545 -12  803  DJ4ZC 3A2MW -18
085600 -13 1804  3A2MW DJ4ZC R-24 (x4)
085830 -12 1804  9Y4DG DJ4ZC JO40 (x4)
104315  -6 2075  KP2B DJ4ZC JO40

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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