DO9FR — 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 DO9FR, decoded by SO8OO in southeastern Poland. 1,061 FT8 messages attributed to this token as transmitter, on 160m, 80m, across 23 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-19.

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 1,061 FT8 messages attributed to DO9FR as the transmitting token by decoded message structure across 23 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (98%), followed by 160 m (2%). Most decodes (85%) fell within the six-hour window 17:00-23:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

1,061

Messages attributed

UTC dates decoded

110

Active 15-min windows

-11 dB

Estimated median S/N

Bands

160m · 22 80m · 1,039

First attributed message: 2026-06-08
Last attributed message: 2026-09-19 18:53 UTC

Observed FT8 message patterns

Attributed sample: 1,061 messages
Active dates: 23 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -21 to -2.5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 308, moderate (-15 to -9 dB) 386, strong (≥ -8 dB) 367.

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 DO9FR in decoded directed-looking exchanges:

DL6ZNG · Fed. Rep. of Germany ×2 DL8OAS · Fed. Rep. of Germany ×2 DO1TRH · Fed. Rep. of Germany ×2 DO5PY · Fed. Rep. of Germany ×2 R5AV · European Russia ×2 F6FDY · France IK1MJK/P · Italy LZ3CB · Bulgaria DF2NV · Fed. Rep. of Germany DL2AND · Fed. Rep. of Germany DO3PKE · Fed. Rep. of Germany IK4OLQ · 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 DO9FR

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 · 708 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 841 km (approx.)
Last such locator decoded: 2026-09-19 18:53 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	DO9FR S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-19 18:52	80m	-11 / -	F6FEG	- / -16	2	✓ Closing fragment
09-19 18:33	80m	-12 / -	IQ0AK	- / -	3	Partial capture
09-19 18:11	80m	-2 / -	DO1XMC	- / -11	3	Partial capture
09-19 17:49	80m	-14 / -13	DO1TRH	-3 / +7	10	✓ Full exchange observed
09-17 19:24	80m	-8 / -	DL80NRW	- / -	3	Partial capture
09-17 19:21	80m	-14 / -13	DO1KKP	-3 / -	3	✓ Closing observed
09-17 19:14	80m	-4 / -9	DH2YBG	-16 / 0	3	✓ Full exchange observed
09-17 19:14	80m	- / -	PA0LDE	-18 / -	2	Partial capture
09-17 19:10	80m	-12 / -15	II8IHBC	-1 / -2	3	Partial capture
09-17 19:03	80m	-11 / -	DH1JAD	-6 / +6	4	✓ Closing observed
09-17 19:00	80m	-9 / -8	DK2MAX	+6 / 0	6	✓ Full exchange observed
09-17 19:00	80m	-8 / -	M0XXJ	-21 / -10	3	✓ Closing observed
09-17 18:58	80m	- / -16	DO5PY	-4 / -	2	✓ Closing fragment
09-17 18:52	80m	-5 / -17	YU6TM	+1 / -	4	✓ Closing observed
09-17 18:47	80m	-12 / -15	RW1AI	-7 / +2	6	✓ Full exchange observed
09-17 18:47	80m	-10 / -6	DO7MEW	-20 / -	3	✓ Closing observed
09-17 18:41	80m	-11 / -	OZ5THY	- / +7	4	✓ Closing fragment
09-17 18:39	80m	-14 / -2	M8FQT	-14 / -7	7	✓ Full exchange observed
09-17 18:38	80m	-14 / -8	PH7GD	-8 / -3	5	✓ Full exchange observed
09-17 18:33	80m	-6 / -	M7NQB	- / -	2	Partial capture
09-15 16:48	80m	-5 / -	UT7AA	- / -	2	Partial capture
09-15 16:41	80m	- / -	SP3ML	-22 / -	4	Partial capture
09-15 16:38	80m	- / +7	OZ6TL	-6 / -	3	✓ Closing fragment
09-14 17:58	80m	0 / -	RA9CUU	- / -11	6	✓ Closing fragment
09-14 17:49	80m	-16 / -7	YL3NT	-4 / -	4	✓ Closing observed
09-14 17:39	80m	+3 / -	LY2BNL	- / -16	3	✓ Closing fragment
09-14 17:30	80m	-5 / -	DA6OOM	- / -17	3	✓ Closing fragment
09-14 17:28	80m	-8 / -	DK0SN	- / -8	2	✓ Closing fragment
09-14 17:18	80m	-7 / -	DL0VDU	- / -7	2	✓ Closing fragment
09-14 17:16	80m	-9 / -	DK0IL	- / -3	3	✓ Closing fragment
09-14 17:09	80m	-11 / -	KH8WW	- / -	11	Partial capture
09-13 21:08	80m	-9 / -5	II7IAME	-16 / -14	2	Partial capture
09-13 21:05	80m	+7 / -9	GW4HZA	-14 / -2	5	✓ Full exchange observed
09-13 21:03	80m	-3 / -14	R4HHN	-10 / -12	5	✓ Full exchange observed
09-13 20:38	160m	-14 / +6	DL2AND	-4 / +9	5	✓ Full exchange observed
09-13 20:35	160m	-20 / -	RA9YTI	- / -	4	Partial capture
09-13 20:27	80m	+2 / -	SN40KZE	- / -	2	Partial capture
09-13 20:25	80m	-15 / -21	EA5KT	-17 / -	3	Partial capture
09-13 20:20	80m	-14 / -	EA5KT	- / -	3	Partial capture
09-13 20:18	80m	+2 / -	SN40KZE	- / -	2	Partial capture
09-13 20:13	80m	-8 / -	RA9SBN	- / -	3	Partial capture
09-13 20:12	80m	-4 / -12	R3PLN	-5 / -	4	✓ Closing observed
09-13 20:03	80m	-6 / -	UA0TP	- / -	3	Partial capture
09-13 20:02	80m	-10 / -	EC3A	- / -7	2	✓ Closing fragment
09-13 19:55	80m	-2 / -12	EU1EU	0 / +2	4	✓ Full exchange observed
09-13 19:53	80m	+5 / -	PF1B	- / -13	2	✓ Closing fragment
09-13 19:45	80m	-3 / -	UA9JTJ/9	- / -	5	Partial capture
09-13 19:42	80m	0 / -	R3QX	- / -	3	Partial capture
09-13 19:33	80m	- / -9	HF26BMS	+4 / -	4	Partial capture
09-13 19:27	80m	+12 / -	F5OYA/P	- / -	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
180315 -20 1774  CQ DO9FR JO53
180545  -9 2078  EA3DNC DO9FR -09
181145  -2 2078  DO1XMC DO9FR -11 (x3)
183315 -13  616  IQ0AK DO9FR JO53 (x3)
185000  +2 1974  CQ DO9FR JO53 (x4)
185200 -11 1974  F6FEG DO9FR -16 (x2)
185330  +0 1975  CQ DO9FR JO53                         a1

160m

UTC    dB Audio  Message
190430 -20 1362  IK4OLQ DO9FR R-09
191515  -9 1363  DO9FR IK4OLQ RR73
203530 -19 1592  RA9YTI DO9FR JO53 (x4)
203830 -24 1659  CQ DO9FR JO53
203845  -6 1235  DO9FR DL2AND JO60
203900 -14 1659  DL2AND DO9FR +09
203915  -3 1235  DO9FR DL2AND R+06
203930 -15 1659  DL2AND DO9FR RR73
203945  -4 1235  DO9FR DL2AND 73
204000 -20 1659  CQ DO9FR JO53 (x3)

10m

UTC    dB Audio  Message
162330 -18 1168  DO9FR F6FDY JN33 (x2)
162600  +5 2140  DO9FR LZ3CB KN32 (x3)
172745 -12 2090  DO9FR IK1MJK/P JN35 (x4)
092930  -7 2690  DO9FR F1PBZ -06
134445 -19 1836  DO9FR EB3JT JN01

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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