DC0ZJ — 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 DC0ZJ, decoded by SO8OO in southeastern Poland. 72 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-07-24 and 2026-10-07.

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 72 FT8 messages attributed to DC0ZJ as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (65%), followed by 40 m (25%) and 20 m (10%). Most decodes (63%) 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 -12 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-12 dB

Estimated median S/N

Bands

80m · 47 40m · 18 20m · 7

First attributed message: 2026-07-24
Last attributed message: 2026-10-07 17:07 UTC

Observed FT8 message patterns

Attributed sample: 72 messages
Active dates: 6 UTC dates
Estimated median S/N: -12 dB
Estimated 10th-90th percentile: -20 to -3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 22, moderate (-15 to -9 dB) 30, strong (≥ -8 dB) 20.

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 DC0ZJ in decoded directed-looking exchanges:

AN5CV · Spain EA1AM · Spain 9A3TGY · Croatia DA6NEL · Fed. Rep. of Germany DL1FRH · Fed. Rep. of Germany DO1DMR · Fed. Rep. of Germany DO1UKR · Fed. Rep. of Germany DO7AGN · Fed. Rep. of Germany DO9JTR · Fed. Rep. of Germany OK1SI · Czech Republic OZ7CL · Denmark SA3LEN · Sweden

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 DC0ZJ

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 · 50 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 911 km (approx.)
Last such locator decoded: 2026-10-07 17:03 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	DC0ZJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-07 17:05	80m	-18 / -2	DA6NEL	+6 / -	6	✓ Closing observed
10-07 17:04	80m	- / -5	DO1UKR	+2 / -	5	✓ Closing fragment
10-07 17:03	80m	-18 / -6	DO7AGN	+4 / 0	3	✓ Full exchange observed
10-06 00:03	40m	- / -14	AN5CV	-14 / -	2	✓ Closing fragment
10-06 00:01	80m	-12 / -	Z61DX	- / -	2	Partial capture
10-05 23:56	80m	-6 / -	9A4ZM	- / -	2	Partial capture
10-05 23:41	80m	-4 / -9	OK1SI	+15 / -1	4	✓ Full exchange observed
10-05 23:07	80m	- / -18	SP7OK	+5 / -	3	✓ Closing fragment
10-05 23:01	80m	-20 / -	DL7PIA	- / -	2	Partial capture
10-05 21:55	80m	-17 / -12	LZ936BA	-2 / -14	3	Partial capture
10-05 21:51	80m	-11 / -12	DL1FRH	-2 / -2	3	✓ Full exchange observed
10-05 21:47	80m	-15 / -	LZ936BA	- / -	4	Partial capture
10-05 21:42	80m	-13 / -10	DO9JTR	-2 / +2	6	✓ Full exchange observed
10-05 21:39	80m	-14 / -14	YO2UKG	+3 / -10	6	✓ Full exchange observed
10-05 19:59	40m	-8 / -	OE7FTI/P	- / -	2	Partial capture
10-05 19:54	40m	-16 / -	EA1AM	- / +7	6	✓ Closing fragment
09-07 20:24	80m	- / -5	DH5BO	-5 / -	2	Partial capture
09-07 20:20	80m	- / +2	DO1DMR	-3 / -	3	✓ Closing fragment
09-07 20:17	80m	- / -22	OZ7CL	+8 / -	2	✓ Closing fragment
09-06 22:07	40m	- / -22	K1SM	-13 / -	3	Partial capture
09-05 22:50	80m	- / -25	SA3LEN	+7 / -	2	✓ Closing fragment
08-31 22:31	80m	-5 / -20	9A3TGY	-2 / -	3	✓ Closing observed
08-31 22:27	80m	-15 / -	9A3TGY	- / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
170315 -18 2110  CQ DC0ZJ JO40
170345 -18 2110  DO7AGN DC0ZJ +00
170400  +5 2110  DC0ZJ DO7AGN R-06
170400  +2 1387  DC0ZJ DO1UKR JO43
170430  +2 2110  DC0ZJ DO7AGN 73
170430  +2 1387  DC0ZJ DO1UKR JO43 (x2)
170500  +3 2110  DC0ZJ DA6NEL JO60
170530  +1 1387  DC0ZJ DO1UKR R-05
170530  +5 2110  DC0ZJ DA6NEL JO60
170600  +2 1387  DC0ZJ DO1UKR 73
170600  +4 2110  DC0ZJ DA6NEL JO60 (x2)
170745 -18 2110  DA6NEL DC0ZJ RR73
170800  +3 2110  DC0ZJ DA6NEL 73

40m

UTC    dB Audio  Message
220900 -13 2255  DC0ZJ K1SM -22 (x2)
195400 -17 1502  EA1AM DC0ZJ JO40 (x6)
195915  -8 1309  OE7FTI/P DC0ZJ JO40 (x2)
000345 -14 1261  DC0ZJ AN5CV -14 (x2)
000900 -21 1243  LZ1ZF DC0ZJ JO40
001830 -22 1438  DC0ZJ EA1DB -11
002545 -22 1387  N4DWD DC0ZJ 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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