DF4WC — 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 DF4WC, decoded by SO8OO in southeastern Poland. 1,228 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 17 UTC dates in the available aggregate history. Observed between 2026-08-08 and 2026-10-18.

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 1,228 FT8 messages attributed to DF4WC as the transmitting token by decoded message structure across 17 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (55%), followed by 80 m (28%) and 10 m (8%). Most decodes (68%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (87%); the estimated median was +1 dB.

Overview

1,228

Messages attributed

UTC dates decoded

111

Active 15-min windows

+1 dB

Estimated median S/N

Bands

160m · 49 80m · 342 40m · 59 20m · 674 10m · 104

First attributed message: 2026-08-08
Last attributed message: 2026-10-18 13:03 UTC

Observed FT8 message patterns

Attributed sample: 1,228 messages
Active dates: 17 UTC dates
Estimated median S/N: +1 dB
Estimated 10th-90th percentile: -10 to +11 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 31, moderate (-15 to -9 dB) 131, strong (≥ -8 dB) 1,066.

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 DF4WC in decoded directed-looking exchanges:

YL3CW · Latvia ×2 7Z1BQ · Saudi Arabia ×2 BG7ZHS · China ×2 JI4POR · Japan ×2 9A4AA · Croatia ×2 SP9DWT · Poland ×2 SQ5ANT · Poland ×2 DO1DX · Fed. Rep. of Germany EA1ARJ · Spain EA4BMF · Spain EB5RCA · Spain F4BYF · France

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 DF4WC

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 · 764 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 920 km (approx.)
Last such locator decoded: 2026-10-18 13:01 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	DF4WC S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-18 13:03	40m	- / 0	SP3IPA	-2 / -	11	Partial capture
10-18 13:03	40m	- / -	UA4FKT	-7 / -	4	Partial capture
10-18 13:01	40m	-5 / -3	DJ2MS	-14 / +4	7	✓ Full exchange observed
10-18 12:57	40m	-4 / -	IK4UPK	-6 / -	6	✓ Full exchange observed
10-14 18:36	160m	-10 / -	OM1FED	- / -	3	Partial capture
10-14 18:35	160m	-4 / -	LY1SR	- / -	2	Partial capture
10-14 18:33	160m	-7 / -	OE5OEL	- / -14	3	✓ Closing fragment
10-14 18:31	160m	-10 / -	DO3PSG	- / -	3	Partial capture
10-14 18:30	160m	-2 / -	F4JUQ	- / -4	3	✓ Closing fragment
10-14 18:28	160m	-10 / -	M0PPF	- / -	2	Partial capture
10-14 18:28	160m	- / -	HF5A	+7 / -	6	Partial capture
10-14 18:26	160m	-8 / -	OL900LTV	- / -14	2	Partial capture
10-14 18:23	160m	-7 / -11	DO9AO	+22 / -	5	✓ Full exchange observed
10-14 18:20	160m	-20 / -	OL900LTV	- / -7	3	Partial capture
10-14 18:17	160m	-2 / -	ON4MGV	-16 / +1	2	✓ Closing observed
10-14 18:13	160m	-4 / -	ES2AJ	- / -	3	Partial capture
10-14 18:11	160m	-14 / -13	HA6NN	-4 / -1	5	✓ Full exchange observed
10-14 18:10	160m	-11 / -	DK6WS	-8 / -	5	✓ Full exchange observed
10-14 18:08	160m	+2 / +3	DK7ZT	-12 / -2	3	✓ Full exchange observed
10-14 18:07	160m	-7 / +9	DO9KB	-10 / -	5	✓ Full exchange observed
10-14 18:05	160m	-6 / -8	YL3CW	0 / -	3	✓ Closing observed
10-14 18:03	80m	-11 / -	IZ1GCS	+4 / +8	5	✓ Full exchange observed
10-14 18:01	80m	-8 / -	PE1NAO	- / +4	3	✓ Closing fragment
10-14 17:55	80m	+4 / +5	PA4X	-1 / -	4	✓ Full exchange observed
10-14 17:53	80m	+2 / +5	OK1UOZ	+16 / +6	5	✓ Full exchange observed
10-14 17:51	80m	+2 / -9	DO9SAM	+12 / -	4	✓ Full exchange observed
10-14 17:49	80m	+2 / +5	DK0KG	-1 / -	7	✓ Full exchange observed
10-14 17:47	80m	+2 / -4	DO2BBC	-3 / +5	4	✓ Full exchange observed
10-14 17:46	80m	- / -	DA6WA	-16 / -	2	Partial capture
10-14 17:41	80m	-2 / -10	SP7OK	+9 / +4	4	✓ Full exchange observed
10-13 22:21	80m	- / +9	DL/AD2LX	+2 / -	2	Partial capture
10-13 22:19	80m	-4 / -	C31KC	- / -	4	Partial capture
10-13 22:15	80m	- / -	DL/AD2LX	+2 / -	4	Partial capture
10-13 22:14	80m	-7 / -	M9DNC	-19 / -7	4	✓ Closing observed
10-13 22:12	80m	+10 / +1	IZ8XXE	+11 / -4	5	✓ Full exchange observed
10-13 22:10	80m	+5 / +2	SP9TBT	+10 / +1	7	✓ Full exchange observed
10-13 22:09	80m	+4 / -	PA1AZ	+2 / -	5	✓ Full exchange observed
10-13 22:06	80m	+13 / +2	OH6FSO	-11 / -	4	Partial capture
10-13 22:05	80m	+10 / -	IU5HIU	- / -11	2	✓ Closing fragment
10-13 22:05	80m	+6 / -10	ON6PL	-2 / +7	8	✓ Full exchange observed
10-13 22:04	80m	-1 / -9	M9YDD	-7 / +2	3	✓ Full exchange observed
10-13 22:01	80m	+1 / -17	5B4AMX	-18 / -15	7	✓ Full exchange observed
10-13 22:00	80m	+4 / -8	SP5MXZ	+11 / +4	4	✓ Full exchange observed
10-13 21:56	80m	-11 / -2	EA4HPY	+2 / +7	5	✓ Full exchange observed
10-13 21:55	80m	-7 / -	PI4DX	+10 / -	5	✓ Full exchange observed
10-13 21:53	80m	-6 / -	LB9ZG	-4 / +2	5	✓ Full exchange observed
10-13 21:51	80m	-4 / -14	IU5VMC	+4 / +6	6	✓ Full exchange observed
10-13 21:50	80m	+2 / -5	F5RMK	-8 / +4	4	✓ Full exchange observed
10-13 21:48	80m	-1 / -	M8IFY	-11 / +3	4	✓ Closing observed
10-13 21:46	80m	-1 / -	TF4M	- / -6	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
130315  -9 1068  DF4WC UA4FKT LO23 (x2)
130345  -6  697  DF4WC SP3IPA +00
130415  -7 1068  DF4WC UA4FKT LO23
130415  +0  697  DF4WC SP3IPA +00
130445  -7 1069  DF4WC UA4FKT LO23
130445  -3  697  DF4WC SP3IPA +00 (x9)

160m

UTC    dB Audio  Message
183000  -2  746  F4JUQ DF4WC JN49
183030  +6 2691  DF4WC HF5A JO92
183030  -2  746  F4JUQ DF4WC R-04 (x2)
183130  -9 1903  DO3PSG DF4WC JN49 (x3)
183315  -5  306  OE5OEL DF4WC JN49 (x3)
183530  -5 1200  LY1SR DF4WC JN49 (x2)
183645  -9 2407  OM1FED DF4WC JN49 (x3)

80m

UTC    dB Audio  Message
175600  -1  245  DF4WC PA4X 73
175715  +3  493  CQ DF4WC JN49 (x6)
180130 -11 1410  PE1NAO DF4WC JN49 (x3)
180330 -10 1302  IZ1GCS DF4WC JN49
180345  +2 1302  DF4WC IZ1GCS +15
180400 -11 1302  IZ1GCS DF4WC R+08
180415  +5 1302  DF4WC IZ1GCS RRR
180430 -12 1302  IZ1GCS DF4WC 73

20m

UTC    dB Audio  Message
210845 +10  724  WV2B DF4WC JN49
211015  -7 2071  K3TBA DF4WC JN49 (x6)
211645  -1 1396  W1AW/2 DF4WC JN49 (x2)
211815  -1 1787  TA2BMV DF4WC JN49 (x3)
211945  +6  726  WV2B DF4WC JN49 (x3)

10m

UTC    dB Audio  Message
113115  +2  338  EA1ARJ DF4WC JN49 (x3)
113300  +0  667  CR7BRV DF4WC JN49 (x3)
113515 -10 2217  EA4BMF DF4WC JN49 (x4)
113930  -6  666  CR7BRV DF4WC JN49
114000  -6 2621  US5WE DF4WC JN49 (x3)
114500  -9  665  CR7BRV DF4WC R-04

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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