DM4KW — 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: JN49

Receiver-side FT8 activity involving DM4KW, decoded by SO8OO in southeastern Poland. 149 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 11 UTC dates in the available aggregate history. Observed between 2026-06-13 and 2026-10-16.

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 149 FT8 messages attributed to DM4KW as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (65%), followed by 80 m (28%) and 20 m (4%). Most decodes (97%) fell within the six-hour window 16:00-22:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

149

Messages attributed

UTC dates decoded

Active 15-min windows

-8 dB

Estimated median S/N

Bands

160m · 97 80m · 42 40m · 4 20m · 6

First attributed message: 2026-06-13
Last attributed message: 2026-10-16 19:38 UTC

Observed FT8 message patterns

Attributed sample: 149 messages
Active dates: 11 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -17 to -2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 29, moderate (-15 to -9 dB) 39, strong (≥ -8 dB) 81.

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 DM4KW in decoded directed-looking exchanges:

UA4FKT · European Russia ×2 7Z1BQ · Saudi Arabia DL2FCK · Fed. Rep. of Germany DL7CX · Fed. Rep. of Germany EA3AKY · Spain F4EGM · France F5JAE · France HG9FS · Hungary IZ1HJU · Italy IZ2CSX · Italy IZ3VCN · Italy LX1JX · Luxembourg

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 DM4KW

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: JN49 · 84 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 920 km (approx.)
Last such locator decoded: 2026-10-16 19:33 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	DM4KW S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-16 19:41	40m	- / -11	I0XNH	-4 / -	2	✓ Closing fragment
10-16 19:39	40m	- / +2	MI7JUX	-18 / -	2	✓ Closing fragment
10-10 20:47	160m	-5 / -12	SQ2BXI	-12 / -15	5	✓ Full exchange observed
10-10 20:46	160m	-6 / -	F5JAE	- / -18	2	✓ Closing fragment
10-10 20:45	160m	-3 / -	IZ3VCN	+9 / +6	5	✓ Closing observed
10-10 20:40	160m	- / -15	IK4IDY	-14 / -	2	Partial capture
10-10 20:37	160m	-7 / -	F4EGM	-24 / -	2	✓ Closing observed
10-10 20:36	160m	-10 / -7	HG9FS	+6 / -1	4	✓ Full exchange observed
10-10 20:33	160m	-8 / -5	OK1TRJ	0 / 0	5	✓ Full exchange observed
10-10 20:31	160m	-2 / -	IZ2CSX	- / -16	2	✓ Closing fragment
10-10 20:29	160m	-6 / -	UA4FKT	+4 / -5	5	Partial capture
10-10 20:27	160m	-6 / -	US2YW	+4 / +2	6	Partial capture
10-10 20:26	160m	-6 / -13	EA3AKY	-16 / -2	5	✓ Full exchange observed
10-10 20:26	160m	- / -	UA4FKT	+4 / -	2	Partial capture
10-10 20:24	160m	-10 / -	IZ1HJU	-24 / -13	4	✓ Closing observed
10-04 13:13	10m	- / -5	7Z1IS	-18 / -	2	Partial capture
10-04 13:07	10m	- / -12	7Z1BQ	-10 / -	2	✓ Closing fragment
10-02 20:54	160m	-15 / -21	RU3FM	+5 / -2	4	✓ Full exchange observed
10-02 20:48	160m	-6 / +5	DA125RH	-11 / -3	3	Partial capture
09-21 18:24	80m	-18 / -11	DL80NRW	-11 / -10	3	Partial capture
09-04 20:26	160m	-2 / -13	SP9MRP	-5 / -10	6	✓ Full exchange observed
09-04 20:26	160m	-6 / -	DL2FCK	- / +7	2	✓ Closing fragment
09-04 20:24	160m	-6 / -6	OK8WIT	-10 / -6	4	✓ Full exchange observed
09-04 20:19	80m	- / -	RA4Y	0 / -	2	Partial capture
09-04 20:18	80m	-16 / +3	DM0CRACY	+1 / -	2	Partial capture
09-04 20:15	80m	-9 / -15	UA4FKT	+2 / +3	5	✓ Full exchange observed
09-04 20:13	80m	-12 / -11	OE5ABL	+2 / -	6	✓ Full exchange observed
09-04 20:12	80m	-3 / -	HB9EKJ	- / +5	3	✓ Closing fragment
09-04 20:10	80m	- / -	DC7MA	-2 / -	3	✓ Closing fragment
09-04 20:09	80m	- / -7	IK2BUF	-6 / -	2	✓ Closing fragment
09-04 20:07	80m	- / -7	F5PBG	-11 / -	3	✓ Closing fragment
09-04 20:06	80m	-2 / -3	DA6IT	0 / -	5	✓ Full exchange observed
09-04 20:04	80m	-8 / -	RA9SOZ	-4 / -4	5	✓ Closing observed
09-04 19:58	80m	-10 / -7	SP7SZJ	+8 / -	4	✓ Full exchange observed
09-02 19:57	160m	- / -20	DL7CX	-6 / -	2	✓ Closing fragment
09-02 19:47	160m	-7 / -	LX1JX	-4 / -	4	✓ Full exchange observed
08-30 09:30	20m	-21 / -	EA3IE	-15 / +9	2	Partial capture
08-29 19:03	80m	- / -	HA1RJ	+12 / -	4	Partial capture
08-29 18:55	80m	- / -	DF7TV	+8 / -	2	✓ Closing fragment
08-29 18:55	80m	- / -4	R3KJF	-6 / -	9	Partial capture
08-29 17:57	80m	0 / +10	DL5EBS	-12 / -21	3	✓ Full exchange observed
08-29 17:54	80m	+1 / -12	UA4FKT	+4 / -11	10	✓ Full exchange observed
08-28 21:50	20m	- / +8	AA3B	+12 / -	2	✓ Closing fragment
08-28 21:25	20m	- / -6	AB8M	-2 / -	2	✓ Closing fragment
08-28 21:07	20m	- / -18	F5RRS	-7 / -	4	✓ Closing fragment
08-28 20:58	20m	- / -12	DK7ZT	-7 / -	5	Partial capture

Recent FT8 messages decoded at SO8OO

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

10m

UTC    dB Audio  Message
130745 -10 1157  DM4KW 7Z1BQ -12 (x2)
131330 -17 1530  DM4KW 7Z1IS -05 (x2)
105200 -19 1607  DM4KW D2UY +05

40m

UTC    dB Audio  Message
193000 -11 2206  LY7T DM4KW 73
193015 -12 1772  DM4KW RZ4FWA LO23
193245 -15 1706  DM4KW M6ILA RR73
193345 -21 1558  I0XNH DM4KW JN49
193830 -20 2240  G1SUM DM4KW 73
193915 -21 1588  DM4KW MI7JUX +02 (x2)
194100  -4 1557  DM4KW I0XNH -11 (x2)

160m

UTC    dB Audio  Message
204530  -4 2179  IZ3VCN DM4KW +06 (x2)
204615 +13  471  DM4KW IZ3VCN 73
204630  -3 2179  F5JAE DM4KW -18
204645  +6  471  DM4KW IZ3VCN JN66
204700  -9 2179  F5JAE DM4KW RR73
204730  -5 2179  CQ DM4KW JN49
204745 -16  334  DM4KW SQ2BXI JO94
204800  -4 2179  SQ2BXI DM4KW -15
204815 -13  334  DM4KW SQ2BXI R-12
204830  -6 2179  SQ2BXI DM4KW RR73
204845  -6  335  DM4KW SQ2BXI 73
204900  -1 2179  CQ DM4KW JN49 (x3)

80m

UTC    dB Audio  Message
201430 -16 2221  OE5ABL DM4KW R+13
201445  +6 2221  DM4KW OE5ABL RR73
201500  -8 2221  OE5ABL DM4KW 73
201515  -2 2221  DM4KW UA4FKT LO23
201530  -8 2221  UA4FKT DM4KW +03
201545  +6 2221  DM4KW UA4FKT R-15
201600 -10 2221  UA4FKT DM4KW RR73
201615  +3 2221  DM4KW UA4FKT 73
201815  +1 1893  DM4KW DM0CRACY +03
201830 -16 1894  DM0CRACY DM4KW R+14
201915  +0  815  DM4KW RA4Y LO35 (x2)
182445 -19  650  DL80NRW DM4KW JN49
182500 -11  650  DM4KW DL80NRW -11
182515 -17  650  DL80NRW DM4KW R-10

20m

UTC    dB Audio  Message
210730  -9 2013  DM4KW F5RRS JN36 (x3)
212500  -4 2574  DM4KW AB8M -06 (x2)
215030 +12  655  DM4KW AA3B +08 (x2)
173530 -17 1508  CQ DM4KW JN49
092600 -15 1521  LY2BSW DM4KW RR73
092700 -19 1522  CQ DM4KW JN49
093045 -15 1084  DM4KW EA3IE JN01
093100 -21 1522  EA3IE DM4KW +09
093330 -19 1522  CQ DM4KW JN49
093800 -18 1523  LZ1BT DM4KW RR73
094645  -5 1641  DM4KW PD3WMA JO22

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

CW history is temporarily unavailable.

Explore CW reception at SO8OO

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