OK1DDJ — 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: Czech Republic Most frequent locator attributed to this token: JN69

Receiver-side FT8 activity involving OK1DDJ, decoded by SO8OO in southeastern Poland. 118 FT8 messages attributed to this token as transmitter, on 40m, across 6 UTC dates in the available aggregate history. Observed between 2026-10-10 and 2026-11-03.

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 118 FT8 messages attributed to OK1DDJ as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). Most decodes (100%) fell within the six-hour window 12:00-18:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (81%); the estimated median was -4 dB.

Overview

118

Messages attributed

UTC dates decoded

Active 15-min windows

-4 dB

Estimated median S/N

Bands

40m · 118

First attributed message: 2026-10-10
Last attributed message: 2026-11-03 16:07 UTC

Observed FT8 message patterns

Attributed sample: 118 messages
Active dates: 6 UTC dates
Estimated median S/N: -4 dB
Estimated 10th-90th percentile: -11 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 17, strong (≥ -8 dB) 96.

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 OK1DDJ in decoded directed-looking exchanges:

OZ9FF · Denmark ×2 4X1UF · Israel DH2NJS · Fed. Rep. of Germany DK8MT · Fed. Rep. of Germany DL4FBZ · Fed. Rep. of Germany ER1IM · Moldova EU4BE · Belarus F1PBZ · France F1UNR · France HB9SFL · Switzerland IN3WZS · Italy LA2GCA · Norway

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 OK1DDJ

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: JN69 · 46 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 634 km (approx.)
Last such locator decoded: 2026-11-03 16:07 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	OK1DDJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-03 16:07	40m	-4 / -15	UB6LWX	-12 / -	3	Partial capture
11-03 16:03	40m	-5 / +10	HB9SFL	-10 / -	3	✓ Closing observed
11-03 15:58	40m	-6 / -16	UD8D	-10 / -10	7	✓ Full exchange observed
11-03 15:52	40m	-5 / -	OE9MOI	- / -12	3	✓ Closing fragment
11-03 15:49	40m	-6 / -	UA9SHH	-14 / -	4	✓ Closing observed
11-02 16:57	40m	-24 / -16	RJ3DC	-10 / -14	4	✓ Full exchange observed
11-02 16:55	40m	-13 / -	RL2F	- / -2	2	Partial capture
11-02 16:51	40m	-10 / -15	4X1UF	-14 / -21	7	✓ Full exchange observed
11-02 16:49	40m	-17 / -	LA2GCA	- / -10	2	✓ Closing fragment
11-01 15:15	40m	- / -2	M0ELS	-24 / -	2	Partial capture
11-01 15:01	40m	-3 / -	M7PHE	-23 / -24	4	✓ Closing observed
11-01 14:58	40m	+4 / -16	RZ6L	+5 / -19	4	✓ Full exchange observed
11-01 14:56	40m	-2 / -	M0ELS	- / -	2	Partial capture
11-01 14:52	40m	-6 / -	M7FSE	- / -15	4	✓ Closing fragment
11-01 14:50	40m	-7 / -	OR1A	- / -10	3	✓ Closing fragment
11-01 14:44	40m	-4 / -	M8VCP	- / -4	2	✓ Closing fragment
11-01 14:42	40m	-6 / -9	R6BH	-12 / -8	5	✓ Full exchange observed
11-01 14:40	40m	-3 / -	LY3PW	-4 / -3	4	✓ Closing observed
11-01 14:39	40m	- / -16	UB6LWX	-10 / -	2	Partial capture
10-24 13:25	40m	-5 / -	R1BED	-19 / -12	5	✓ Closing observed
10-24 12:37	40m	-7 / +2	S57NIK	-7 / -	5	✓ Full exchange observed
10-24 12:35	40m	-4 / -	IN3WZS	- / -	3	✓ Closing fragment
10-24 12:33	40m	-1 / -	F1UNR	- / -3	3	✓ Closing fragment
10-24 12:31	40m	0 / -	DH2NJS	-10 / +2	5	✓ Closing observed
10-24 12:29	40m	-1 / -	DL4FBZ	- / -	2	✓ Closing fragment
10-24 12:27	40m	-3 / -	SP6SR	- / -8	3	✓ Closing fragment
10-24 12:26	40m	-3 / -	SH1ZLA	- / -	2	Partial capture
10-24 12:22	40m	-5 / -7	F1PBZ	-10 / -24	9	✓ Full exchange observed
10-24 12:20	40m	-9 / -10	ER1IM	-12 / -11	3	✓ Full exchange observed
10-24 12:18	40m	-7 / -	ON3RV	- / -4	4	✓ Closing fragment
10-24 12:16	40m	-2 / -6	OZ9FF	-12 / -4	7	✓ Full exchange observed
10-24 12:14	40m	-3 / -5	SP0YAGI	-20 / -20	5	Partial capture
10-24 12:11	40m	-5 / -	DK8MT	- / -10	3	✓ Closing fragment
10-11 14:54	40m	-8 / -5	EU4BE	-9 / -10	4	✓ Full exchange observed
10-11 14:50	40m	-7 / -14	PD0MNO	-18 / -3	7	✓ Full exchange observed
10-11 14:46	40m	-4 / -	OS4K	- / -10	3	✓ Closing fragment
10-11 14:42	40m	-3 / -10	YO3GJE	-18 / -20	12	✓ Full exchange observed
10-11 14:40	40m	0 / -16	OZ9FF	-6 / -5	5	✓ Full exchange observed
10-10 17:10	40m	-6 / -	UN3P	- / -	2	Partial capture
10-10 17:08	40m	-2 / -	M7CYY	- / -22	4	✓ Closing fragment
10-10 17:07	40m	+2 / -	R9SDR	- / -11	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
155415  -5 1494  SV1OML OK1DDJ JN69
155800  -9 1227  UD8D OK1DDJ JN69
155815  -9 1227  OK1DDJ UD8D -16
155830  -6 1227  UD8D OK1DDJ R-10
155845 -11 1227  OK1DDJ UD8D -16
155900  -3 1227  UD8D OK1DDJ R-10
155915 -11 1227  OK1DDJ UD8D RR73 (x2)
160215  -7 1220  LZ2FL OK1DDJ JN69
160330  -5 2346  HB9SFL OK1DDJ JN69
160345  -8 2346  OK1DDJ HB9SFL +10 (x2)
160715 -13 2417  OK1DDJ UB6LWX -15
160730  -4 2417  UB6LWX OK1DDJ JN69
160845 -12 2417  OK1DDJ UB6LWX -11

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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