DO7UFN — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JN39

Receiver-side FT8 activity involving DO7UFN, decoded by SO8OO in southeastern Poland. 37 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-08-30 and 2026-09-08.

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 37 FT8 messages attributed to DO7UFN as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (97%), followed by 20 m (3%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -15 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-15 dB

Estimated median S/N

Bands

40m · 36 20m · 1

First attributed message: 2026-08-30
Last attributed message: 2026-09-08 19:45 UTC

Observed FT8 message patterns

Attributed sample: 37 messages
Active dates: 3 UTC dates
Estimated median S/N: -15 dB
Estimated 10th-90th percentile: -20 to -8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 17, moderate (-15 to -9 dB) 15, strong (≥ -8 dB) 5.

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 DO7UFN in decoded directed-looking exchanges:

CT7AUT · Portugal EC5M · Spain F5SFT · France DJ2MS · Fed. Rep. of Germany DK8EW · Fed. Rep. of Germany DL1CC · Fed. Rep. of Germany F4FSY · France F4MUF · France F5OZC · France F5RRS · France G8KHF · England IK4POB · Italy

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 DO7UFN

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: JN39 · 14 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,063 km (approx.)
Last such locator decoded: 2026-09-08 19:43 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	DO7UFN S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-08 19:43	40m	-14 / +6	F4ACR	+1 / -	3	Partial capture
09-08 19:38	40m	- / -8	F5RRS	+12 / -	3	✓ Closing fragment
09-08 19:31	40m	- / -12	YO4NF	-2 / -	2	✓ Closing fragment
09-08 19:27	40m	-10 / -	M7OHG	- / -7	2	Partial capture
09-08 19:22	40m	- / -3	HA3VMS	+8 / -	2	Partial capture
09-08 19:15	40m	-11 / -18	SQ3TR	+10 / -3	6	✓ Full exchange observed
09-08 19:10	40m	-7 / -11	YO4NF	+12 / +2	5	Partial capture
09-08 19:09	40m	-12 / -10	9A60CBM	-12 / +2	3	Partial capture
09-08 19:04	40m	-16 / -12	M8GGQ	-14 / -	3	Partial capture
09-08 19:01	40m	-18 / -	IV3JRW	- / -	3	Partial capture
09-08 18:59	40m	-11 / -5	G8KHF	-16 / -2	5	✓ Full exchange observed
09-08 18:58	40m	- / -16	IV3VFP	-14 / -	2	✓ Closing fragment
09-08 18:54	40m	-18 / -	YO3WST	- / -	2	✓ Closing fragment
09-08 18:50	40m	- / -6	M0SAC	-12 / -	2	✓ Closing fragment
09-07 17:56	40m	-19 / -	F4FSY	-6 / -2	4	✓ Closing observed
09-07 17:51	40m	-20 / -	IU2SLI	-4 / -	2	✓ Closing observed
09-07 17:46	40m	- / -11	DL1CC	+2 / -	2	✓ Closing fragment
09-07 17:34	40m	- / -2	DK7ZT	0 / -	3	Partial capture
09-07 17:33	40m	-12 / -	PA3MVD	-6 / -	2	✓ Closing observed
09-07 17:28	40m	- / -12	OZ1JMJ	-6 / -	2	Partial capture
09-07 17:22	40m	-16 / -	IK4POB	-6 / -13	3	✓ Closing observed
09-07 17:15	40m	- / -4	DK7ZT	-4 / -	4	Partial capture
09-07 17:14	40m	-24 / -7	S52UF	-2 / -	3	✓ Closing observed
09-07 16:52	40m	-18 / -13	IU5HIU	-5 / -8	6	✓ Full exchange observed
09-07 16:48	40m	- / -12	M1DBW	-18 / -	2	Partial capture
09-07 10:44	40m	- / +3	DK7ZT	-18 / -	3	Partial capture
09-07 10:32	40m	- / -5	DK7ZT	-20 / -	3	Partial capture
09-07 10:26	40m	- / +10	DK7ZT	-17 / -	3	Partial capture
09-07 09:57	40m	- / -	DK7ZT	-20 / -	3	Partial capture
09-07 09:56	40m	- / -13	DK8EW	+2 / -	2	✓ Closing fragment
09-07 09:50	40m	- / +3	DK7ZT	-21 / -	3	Partial capture
09-07 09:29	40m	- / -15	IZ4AIF	-22 / -	4	Partial capture
09-01 17:42	80m	- / -19	SP5AA	+14 / -	2	✓ Closing fragment
09-01 17:29	80m	- / -13	DO7RMA	+3 / -	3	✓ Closing fragment
09-01 17:22	80m	- / -5	DO4EB	-9 / -	2	✓ Closing fragment
09-01 17:20	80m	- / -6	DL2EH	+1 / -	2	✓ Closing fragment
09-01 17:18	80m	- / -12	DK9ZZ	-6 / -	2	✓ Closing fragment
09-01 17:16	80m	- / -2	DD0AM	-6 / -	2	✓ Closing fragment
09-01 17:14	80m	- / -7	DH5NC	-4 / -	2	✓ Closing fragment
08-30 15:56	20m	- / -10	CT7AUT	0 / -	2	✓ Closing fragment
08-30 14:15	20m	- / -21	HA1BF	-22 / -	2	Partial capture
08-30 14:08	20m	- / -	F5SFT	-2 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
192230  +7  412  DO7UFN HA3VMS -03 (x2)
192730  -7  377  M7OHG DO7UFN -07 (x2)
193115 -16  942  DO7UFN F4MUF RR73
193145  -4  941  DO7UFN YO4NF -12 (x2)
193830 +13  543  DO7UFN F5RRS JN36 (x3)
194300 -10 1187  DO7UFN F5OZC RR73
194345 -14  690  F4ACR DO7UFN JN39
194400  +1  691  DO7UFN F4ACR +06
194415 -15  690  F4ACR DO7UFN R+15
194545 -13  728  G7TWX DO7UFN R+01

80m

UTC    dB Audio  Message
171430  -5  557  DO7UFN DH5NC -07 (x2)
171600  -6  440  DO7UFN DD0AM -02 (x2)
171830  -8 1742  DO7UFN DK9ZZ -12 (x2)
172030  +3  668  DO7UFN DL2EH -06 (x2)
172200  -7 1029  DO7UFN DO4EB -05 (x2)
172900  +3 1441  DO7UFN DO7RMA -13 (x3)
174215 +15 1219  DO7UFN SP5AA -19 (x2)

20m

UTC    dB Audio  Message
140830  -1 1279  DO7UFN F5SFT +11 (x2)
141530 -23 1345  DO7UFN HA1BF -21 (x2)
155200 -23  879  EC5M DO7UFN 73
155600  +0 1515  DO7UFN CT7AUT -10 (x2)
160415  -6 1611  DO7UFN EA7DJN -19 (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.

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