DF3LZ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO53

Receiver-side FT8 activity involving DF3LZ, decoded by SO8OO in southeastern Poland. 70 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-07-02 and 2026-08-25.

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 70 FT8 messages attributed to DF3LZ as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (46%), followed by 40 m (31%) and 20 m (23%). Most decodes (100%) fell within the six-hour window 15:00-21:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (74%); the estimated median was -5 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-5 dB

Estimated median S/N

Bands

80m · 32 40m · 22 20m · 16

First attributed message: 2026-07-02
Last attributed message: 2026-08-25 20:06 UTC

Observed FT8 message patterns

Attributed sample: 70 messages
Active dates: 3 UTC dates
Estimated median S/N: -5 dB
Estimated 10th-90th percentile: -12 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 16, strong (≥ -8 dB) 52.

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 DF3LZ in decoded directed-looking exchanges:

II6WWA · Italy ×2 DG1BOR · Fed. Rep. of Germany EB3JT · Spain II1WWA · Italy ON6DSL · Belgium OP0WWA · Belgium PD4HT · Netherlands RC5F · European Russia TA2ED · Asiatic Turkey TM2WWA · France DB9JH · Fed. Rep. of Germany DJ1TU · Fed. Rep. of Germany

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 DF3LZ

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: JO53 · 42 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 841 km (approx.)
Last such locator decoded: 2026-08-25 20:05 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	DF3LZ S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-25 20:07	80m	- / -	DL7FE	-4 / -	4	Partial capture
08-25 20:03	80m	-6 / +2	DK8CX	+4 / -	6	✓ Full exchange observed
08-25 20:02	80m	-3 / -	DF3VJ	- / -7	2	✓ Closing fragment
08-25 20:00	80m	-4 / -	OE3EVB	+8 / +8	3	✓ Closing observed
08-25 19:56	80m	-8 / -2	R1TAX	-1 / -6	5	✓ Full exchange observed
08-25 19:53	80m	-9 / -9	DM5JBN	-1 / -	6	✓ Full exchange observed
08-25 19:51	80m	- / -	SP5DFK	-6 / -	2	Partial capture
08-25 19:50	80m	-4 / -2	DK8HC	0 / -	6	✓ Full exchange observed
08-25 19:49	80m	-9 / -	II7MGXX	- / -10	2	Partial capture
08-25 19:28	40m	+4 / -1	DB9JH	-5 / -	5	✓ Full exchange observed
08-25 19:26	40m	-2 / -5	PA1PXL	-2 / -	5	✓ Full exchange observed
08-25 19:23	40m	+2 / -2	DJ1TU	-4 / +3	6	✓ Full exchange observed
08-25 19:22	40m	-5 / +4	PA3AGN	-3 / -	6	✓ Full exchange observed
08-25 19:21	40m	+1 / -11	HZ1TT	-4 / +1	5	✓ Full exchange observed
08-25 19:20	40m	-11 / -4	IZ4EFV	-11 / -3	2	Partial capture
08-25 19:18	40m	-5 / -	M0SFW	- / -17	2	✓ Closing fragment
08-20 16:59	20m	-9 / -16	<...>	-6 / -	7	Partial capture
08-20 16:45	20m	-7 / -	<...>	- / -	8	Partial capture
07-03 08:02	20m	- / -	PI4TS	-22 / -	2	Partial capture
07-02 17:21	40m	- / -	DL4NWM	-14 / -	2	Partial capture
07-02 17:12	40m	- / +5	II6WWA	-18 / -	2	✓ Closing fragment
07-02 17:10	40m	- / -7	II3WWA	-10 / -	2	Partial capture
07-02 15:41	20m	- / -	II1WWA	-18 / -	2	✓ Closing fragment
07-02 15:33	20m	- / -	OE5FIL	-9 / -	2	Partial capture
07-02 15:26	20m	- / -17	PD4HT	-20 / -	2	✓ Closing fragment
07-02 15:16	20m	- / -9	RC5F	-10 / -	2	✓ Closing fragment
07-02 15:02	20m	- / -13	F5URG	+6 / -	2	Partial capture
07-02 14:32	20m	- / -	TA2ED	-10 / -	3	✓ Closing fragment
07-02 14:11	20m	- / -	PD0IFI	+1 / -	7	Partial capture
07-02 14:09	20m	- / -12	PD4PMS	-16 / -	2	Partial capture
07-02 14:03	20m	- / -	ON6DSL	-16 / -	2	✓ Closing fragment
07-02 13:57	20m	- / -4	TM2WWA	0 / -	2	✓ Closing fragment
07-02 13:49	20m	- / -	DK7UY	-16 / -	2	Partial capture
07-02 13:47	20m	- / -5	EB3JT	-5 / -	3	✓ Closing fragment
07-02 13:43	20m	- / -5	OP0WWA	-18 / -	2	✓ Closing fragment
07-02 13:27	20m	- / -	UR4QWW	-16 / -	5	Partial capture
07-02 13:22	20m	- / -14	R6XW	-12 / -	2	Partial capture
06-22 18:28	10m	- / -6	I8OHQ	-7 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
200330  +9 1355  DF3LZ DK8CX JO61
200345  -8 1355  DK8CX DF3LZ +14
200400  +9 1355  DF3LZ DK8CX R+14
200415  -5 1355  DK8CX DF3LZ RR73
200430  +9 1355  DF3LZ DK8CX 73
200445  -2 1355  CQ DF3LZ JO53 (x2)
200530  +8  638  DF3LZ DO6YL +00
200545  -3 1355  CQ DF3LZ JO53
200600 -11 1354  DF3LZ DK8CX +02
200615  -3 1355  <...> DF3LZ R+11
200700  -5 1788  DF3LZ DL7FE JN49 (x4)

40m

UTC    dB Audio  Message
192500  -9 1807  DF3LZ DJ1TU R-02
192515  +4 2359  DJ1TU DF3LZ RR73
192530  -8 2040  DF3LZ PI4TX JO22
192545  +0 2358  CQ DF3LZ JO53
192600  +0 2359  DF3LZ PA1PXL JO21
192615  -4 2359  PA1PXL DF3LZ +18
192630  -2 2359  DF3LZ PA1PXL R-05
192645  -1 2359  PA1PXL DF3LZ RR73
192700  -4 2359  DF3LZ PA1PXL 73
192715  -2 2359  CQ DF3LZ JO53
192800  -9 2791  DF3LZ DB9JH JO31
192815  +5 2359  DB9JH DF3LZ +12
192830  -5 2791  DF3LZ DB9JH R-01
192845  +2 2359  DB9JH DF3LZ RR73
192900  -2 2791  DF3LZ DB9JH 73

20m

UTC    dB Audio  Message
164545  -7 2109  <...> DF3LZ JO53 (x11)
170130  -6 2036  DF3LZ <...> -16
170245  -4 2109  <...> DF3LZ JO53 (x3)

10m

UTC    dB Audio  Message
182830  -7  420  DF3LZ I8OHQ -06 (x2)

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.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee