DJ4WM — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO42

Receiver-side FT8 activity involving DJ4WM, decoded by SO8OO in southeastern Poland. 1,935 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 119 UTC dates in the available aggregate history. Observed between 2026-06-07 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 1,935 FT8 messages attributed to DJ4WM as the transmitting token by decoded message structure across 119 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (46%), followed by 80 m (42%) and 60 m (7%). Most decodes (90%) fell within the six-hour window 02:00-08:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (70%); the estimated median was -3.5 dB.

Overview

1,935

Messages attributed

119

UTC dates decoded

285

Active 15-min windows

-3.5 dB

Estimated median S/N

Bands

80m · 816 60m · 134 40m · 898 20m · 54 10m · 33

First attributed message: 2026-06-07
Last attributed message: 2026-10-07 03:48 UTC

Observed FT8 message patterns

Attributed sample: 1,935 messages
Active dates: 119 UTC dates
Estimated median S/N: -3.5 dB
Estimated 10th-90th percentile: -15.7 to +8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 195, moderate (-15 to -9 dB) 379, strong (≥ -8 dB) 1,361.

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 DJ4WM in decoded directed-looking exchanges:

HA3GX · Hungary ×4 ON4MAP · Belgium ×4 F5LMJ · France ×3 E75C · Bosnia-Herzegovina ×2 F1PBZ · France ×2 HA5LB · Hungary ×2 IU5LQC · Italy ×2 IU5SCG · Italy ×2 PF7DKW · Netherlands ×2 RC6OD · European Russia ×2 SA3LEN · Sweden ×2 SP7OK · Poland ×2

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 DJ4WM

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: JO42 · 953 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 934 km (approx.)
Last such locator decoded: 2026-10-07 03:48 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	DJ4WM S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-07 03:47	80m	+2 / -	R4FDD	- / -14	2	✓ Closing fragment
10-07 03:43	80m	-2 / -	IQ9SZ	- / -	2	Partial capture
10-06 03:43	40m	-20 / -	SP6VXO	- / -10	2	✓ Closing fragment
10-06 03:36	40m	+4 / -	R8CKV	- / -17	3	✓ Closing fragment
10-06 03:34	40m	-3 / -	HA1DAE	- / -3	3	✓ Closing fragment
10-06 03:32	60m	-20 / -	SV9AUP	- / -	2	✓ Closing fragment
10-06 03:27	80m	+6 / -22	YO5OAI	-10 / -1	4	✓ Full exchange observed
10-06 03:25	80m	+7 / -5	SM2LKW	-5 / -11	6	✓ Full exchange observed
10-06 03:24	80m	+1 / -	F4DVP	- / -4	3	✓ Closing fragment
10-05 06:37	80m	-6 / -	F4LMS	- / -15	2	Partial capture
10-05 06:35	80m	-10 / -	DO1FZL	-11 / -2	5	✓ Full exchange observed
10-05 04:08	80m	+3 / -	DL7ROB	- / -19	3	✓ Closing fragment
10-05 04:07	80m	+1 / 0	IQ2AAH	-11 / -5	4	✓ Full exchange observed
10-05 04:04	80m	+4 / -5	UR4LRG	+8 / -4	5	✓ Full exchange observed
10-05 03:15	40m	- / -10	TA2VUZ	-6 / -	2	✓ Closing fragment
10-05 03:08	80m	+11 / -	IU5SCG	-16 / -12	5	✓ Full exchange observed
10-04 02:32	60m	-2 / +2	IU3VGK	-10 / -15	5	✓ Full exchange observed
10-04 02:30	60m	-3 / -	NR4O	- / -23	4	✓ Closing fragment
10-04 02:28	60m	0 / -	Z61DX	-16 / -5	4	✓ Closing observed
10-04 02:24	60m	-12 / +4	LZ936BA	-15 / -4	3	Partial capture
10-04 02:21	80m	-7 / -2	OZ7CL	0 / -17	5	✓ Full exchange observed
10-04 02:19	80m	-8 / -	IZ2SNK	- / -23	3	✓ Closing fragment
10-04 02:16	80m	-6 / -	PA1CTW	- / -9	2	✓ Closing fragment
10-04 02:15	80m	+9 / -	DF5DP	- / -14	3	✓ Closing fragment
10-04 02:13	80m	+6 / -3	OE100OEVSV	-1 / 0	3	Partial capture
10-04 02:10	80m	+18 / -4	UA3AGW	+12 / +1	5	✓ Full exchange observed
10-03 12:31	40m	-13 / -16	PF7DKW	-10 / 0	5	✓ Full exchange observed
10-03 12:30	40m	-21 / -	F6FHZ	- / -15	2	✓ Closing fragment
10-03 12:28	40m	-15 / +4	DG1RTK	-23 / -12	3	Partial capture
10-03 03:15	40m	-13 / -15	OL1TWR	-16 / -12	5	✓ Full exchange observed
10-03 03:13	40m	-2 / -6	3Z4DX	-11 / -	2	Partial capture
10-03 03:10	40m	-5 / -	EA3JBQ	- / -17	3	✓ Closing fragment
10-03 03:08	40m	-12 / -8	IQ9SZ	-21 / -10	2	Partial capture
10-03 03:02	60m	-10 / -	4X5MZ	-19 / -5	4	✓ Closing observed
10-03 02:59	80m	+3 / -	DC7LR	-4 / 0	5	✓ Full exchange observed
10-03 02:54	80m	+1 / -	RK6OV	- / -18	3	✓ Closing fragment
10-03 02:52	80m	+3 / -	TA4SSK	- / -9	3	✓ Closing fragment
10-03 02:49	80m	- / +8	ON1JP	-9 / -	2	✓ Closing fragment
10-02 04:11	80m	-8 / -7	PF7DKW	+4 / +2	5	✓ Full exchange observed
10-02 02:56	60m	-12 / -16	K1OF	-17 / -10	3	✓ Full exchange observed
10-02 02:55	60m	-4 / -	LA6MNA	-6 / -8	4	✓ Closing observed
10-02 02:53	60m	-11 / -21	DH3YAK	-1 / -12	5	✓ Full exchange observed
10-02 02:51	60m	-12 / 0	LZ9DX	-8 / -7	5	✓ Full exchange observed
10-02 02:47	80m	-1 / -14	SX2LGT	-6 / -	3	✓ Closing observed
10-01 09:50	40m	-12 / -	M1DBB	- / -10	2	✓ Closing fragment
10-01 09:47	40m	-14 / +6	DL0DM	+8 / -1	4	✓ Full exchange observed
10-01 09:45	40m	-15 / +4	IK2ZJR	-14 / -15	9	✓ Full exchange observed
10-01 09:40	40m	-13 / -	ON8LX	- / -16	3	✓ Closing fragment
10-01 09:23	40m	-10 / -	GJ0KYZ	- / -19	2	✓ Closing fragment
10-01 09:19	40m	-8 / -1	DG3YEV	+4 / -13	5	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
032630  +8 2724  SM2LKW DJ4WM 73
032645  -4 2723  DJ4WM SM2LKW 73
032715 +10  565  YO5OAI DJ4WM JO42
032730 -10  564  DJ4WM YO5OAI -22
032745  +3  565  YO5OAI DJ4WM R-01 (x2)
034215  +3  790  J48S DJ4WM JO42
034330  -2 1721  IQ9SZ DJ4WM JO42 (x2)
034530  +1 2128  CQ DJ4WM JO42 (x3)
034700  -1 2130  R4FDD DJ4WM R-14 (x2)
034845 +10  445  N0BUZ DJ4WM JO42

40m

UTC    dB Audio  Message
031530  -8 1964  DJ4WM TA2VUZ RR73
064030  -5  786  EI8HV DJ4WM JO42
064115  -7 2282  F5LQ DJ4WM JO42
033430  -4 2450  HA1DAE DJ4WM JO42 (x3)
033600  +3 3053  R8CKV DJ4WM JO42 (x3)
034000  -6 1514  TI5GAX DJ4WM JO42
034130 -17 1910  CQ DJ4WM JO42 (x2)
034300 -16 1983  SP6VXO DJ4WM R-10 (x2)
103500 -17  914  G7RCQ DJ4WM JO42

60m

UTC    dB Audio  Message
022900  -1  974  Z61DX DJ4WM R-05
022915 -16  973  DJ4WM Z61DX RR73
022930  +0  973  Z61DX DJ4WM 73
023000  -1 2362  NR4O DJ4WM JO42 (x4)
023200  -4 2501  IU3VGK DJ4WM JO42
023215 -13 2501  DJ4WM IU3VGK +02
023230  -1 2502  IU3VGK DJ4WM R-15
023245  -8 2501  DJ4WM IU3VGK RR73
023300  -1 2501  IU3VGK DJ4WM 73
023415  +1  539  9T0MD DJ4WM JO42
033230 -21 1614  SV9AUP DJ4WM JO42 (x2)

20m

UTC    dB Audio  Message
075845  -9 2595  DJ4WM F5MYK RR73
075930 -16 2045  G4LJH DJ4WM JO42
080615 -24 1576  F4NHL DJ4WM JO42 (x2)
145400  -8  937  DJ4WM F4FPZ -11 (x2)
075745  +3  621  M9OOS DJ4WM JO42 (x3)
121115  -5 1169  M7GFJ DJ4WM JO42
075015  +7 1777  DJ4WM F5IXN JN23 (x5)

10m

UTC    dB Audio  Message
080145  -7  853  OM6AKO DJ4WM 73
080215 -17 1503  SP7AZA DJ4WM JO42 (x2)
080845  -8  577  UX2SB DJ4WM R+03 (x2)
065445 -17 2079  E75C DJ4WM JO42 (x2)
065830 -19 1461  UB3IBG DJ4WM JO42 (x3)
070200  -9  519  RN3DN DJ4WM JO42 (x2)
070430 -17 1126  DL3MIB DJ4WM -06
081800 -22 1686  DJ4WM RR73; F1PBZ <...> +16
082345  -9 2539  DJ4WM IU0VOG JN61

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.

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