DO1FZL — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO50

Receiver-side FT8 activity involving DO1FZL, decoded by SO8OO in southeastern Poland. 3,534 FT8 messages attributed to this token as transmitter, on 80m, 10m, across 99 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-14.

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 3,534 FT8 messages attributed to DO1FZL as the transmitting token by decoded message structure across 99 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (93%), followed by 10 m (7%). Most decodes (69%) fell within the six-hour window 04:00-10:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

3,534

Messages attributed

UTC dates decoded

466

Active 15-min windows

-8 dB

Estimated median S/N

Bands

80m · 3,302 10m · 232

First attributed message: 2026-06-07
Last attributed message: 2026-10-14 07:00 UTC

Observed FT8 message patterns

Attributed sample: 3,534 messages
Active dates: 99 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -18 to +2.4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 562, moderate (-15 to -9 dB) 1,033, strong (≥ -8 dB) 1,939.

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 DO1FZL in decoded directed-looking exchanges:

DL4SZB · Fed. Rep. of Germany ×3 M8FQT · England ×3 N1IWP · United States ×3 ON4MAP · Belgium ×3 F1MXE · France ×2 F4FSY · France ×2 2W0YOX · Wales ×2 DD0AM · Fed. Rep. of Germany ×2 DF0AWG · Fed. Rep. of Germany ×2 DJ2PW · Fed. Rep. of Germany ×2 DK3XX · Fed. Rep. of Germany ×2 DK7TX · Fed. Rep. of Germany ×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 DO1FZL

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: JO50 · 2,054 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 770 km (approx.)
Last such locator decoded: 2026-10-14 06:59 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	DO1FZL S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-14 06:58	80m	-14 / -3	SP6TGI	+4 / +6	6	✓ Full exchange observed
10-14 06:57	80m	-8 / -	DC0GL	-12 / 0	5	✓ Full exchange observed
10-14 06:43	80m	-16 / -	ON4CAS	- / +2	2	✓ Closing fragment
10-14 06:21	80m	-8 / -	HB9HDK	- / -20	7	Partial capture
10-14 06:05	80m	-6 / -11	DF6DBF	-3 / -4	5	✓ Full exchange observed
10-14 06:01	80m	-9 / -	EA1SAL	- / -11	5	✓ Closing fragment
10-14 05:58	80m	-10 / -10	DF6DBF	-8 / +1	7	Partial capture
10-14 05:50	80m	-19 / -	DB2VS	- / -11	3	✓ Closing fragment
10-14 05:48	80m	-10 / -	M0RDY	- / -	8	Partial capture
10-14 05:34	80m	+6 / -	F5UKW	- / -	3	Partial capture
10-14 05:21	80m	-3 / +6	OH5VT	-13 / -	5	Partial capture
10-14 05:19	80m	+2 / -2	F4JJS	-6 / -18	5	✓ Full exchange observed
10-14 05:12	80m	-3 / -12	HB9TWU	+2 / -1	6	✓ Full exchange observed
10-14 05:10	80m	-4 / -	OH5VT	- / -	4	Partial capture
10-14 05:00	80m	-4 / -11	DJ3JD	-2 / -	4	✓ Closing observed
10-14 04:56	80m	-3 / -19	SM5CBM	+14 / +3	7	✓ Full exchange observed
10-14 04:53	80m	-7 / -	EI2IXB	- / -	2	Partial capture
10-14 04:52	80m	-4 / 0	IK1AIL	-7 / -	4	Partial capture
10-14 04:20	80m	-10 / -	EI2IXB	- / -	3	Partial capture
10-14 04:17	80m	-1 / -4	DO9DML	-3 / -11	10	✓ Full exchange observed
10-14 04:16	80m	- / -14	ON3MOH/P	-4 / -	2	✓ Closing fragment
10-14 04:14	80m	+4 / -	PJ4/DH8BQA	- / -	2	Partial capture
10-14 04:13	80m	+4 / +4	F4EQH	+6 / -4	5	✓ Full exchange observed
10-13 17:24	80m	-10 / -	ON6AA	- / -	3	Partial capture
10-13 17:20	80m	+8 / -5	DK0RMR	-6 / -12	7	✓ Full exchange observed
10-13 17:17	80m	+1 / +7	SQ5FM	-14 / -	9	Partial capture
10-13 17:15	80m	-4 / -	OK1XBF	-15 / -	5	✓ Closing observed
10-13 17:13	80m	-2 / +9	DO1DMR	-13 / -2	4	✓ Full exchange observed
10-13 06:20	80m	- / +7	DL5XL	-9 / -	4	Partial capture
10-13 06:18	80m	+3 / -	OM3ZAS	- / -	5	Partial capture
10-13 06:04	80m	0 / -3	ON7WD	-8 / -9	13	✓ Full exchange observed
10-13 05:59	80m	-5 / -	DO2SGW	- / -14	3	✓ Closing fragment
10-13 05:56	80m	-4 / -	M7NQB	- / -	2	✓ Closing fragment
10-13 05:50	80m	-8 / -1	DL4KER	+6 / -8	6	✓ Full exchange observed
10-13 05:47	80m	-6 / -	F4LOB	- / -	5	Partial capture
10-13 05:24	80m	-12 / -	F5OAM	- / -14	2	Partial capture
10-13 05:23	80m	-2 / -	OZ1DJJ	-6 / +7	3	✓ Closing observed
10-13 05:21	80m	+4 / -7	F4LOB	-24 / -	3	Partial capture
10-13 05:17	80m	-7 / -	HB9EOT	- / -10	2	✓ Closing fragment
10-13 05:15	80m	- / -16	DL1AG	-16 / -	2	✓ Closing fragment
10-13 05:12	80m	- / -	DL1AG	-11 / -	3	Partial capture
10-13 05:10	80m	- / -	DC6MY	+2 / -	2	Partial capture
10-13 05:05	80m	+7 / -7	EW4M	+16 / -10	5	✓ Full exchange observed
10-13 05:01	80m	+5 / -22	II5GG	-5 / -12	10	Partial capture
10-13 04:56	80m	+2 / -	II5GG	- / -	2	Partial capture
10-13 04:26	80m	+6 / -6	YO9IAB	+5 / -2	5	✓ Full exchange observed
10-13 04:25	80m	+6 / -	ES2AJ	- / -	2	Partial capture
10-13 04:24	80m	+8 / -12	LZ2KV	-1 / -11	4	✓ Full exchange observed
10-13 04:23	80m	0 / -	EB3JT	- / -13	2	✓ Closing fragment
10-13 04:21	80m	+1 / -8	HG0NPJ	+2 / -1	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
062400 -13 1024  HB9HDK DO1FZL R-20 (x2)
064300 -17 2136  ON4CAS DO1FZL R+02 (x2)
065700  -4 1047  DC0GL DO1FZL JO50
065715 -13 1046  DO1FZL DC0GL +15
065730 -11 1047  DC0GL DO1FZL R+00
065745 -11 1047  DO1FZL DC0GL RR73
065800 -10 1047  DC0GL DO1FZL 73
065830 -11 1792  SP6TGI DO1FZL JO50 (x2)
065915  +3 1792  DO1FZL SP6TGI -03
065930 -17 1792  SP6TGI DO1FZL R+06
065945  +5 1792  DO1FZL SP6TGI RR73
070000 -16 1792  SP6TGI DO1FZL 73

10m

UTC    dB Audio  Message
134215  -7 1840  9H4JX DO1FZL JO50
113115 -20 1586  DO1FZL IV3VFP -09 (x2)
080045  -8 1181  DO1FZL IZ3NVR -08 (x2)
081645  -1 2817  DO1FZL S56P -04 (x2)
081845 -11 2016  DO1FZL F5MYH +00 (x2)
082145 -15 1338  DO1FZL IS0AWZ -10 (x2)
092530  -1 1772  DO1FZL EX7CQ -16 (x2)
125645  -1 2969  DO1FZL 9J2FI -01 (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