DO5RRS — 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 DO5RRS, decoded by SO8OO in southeastern Poland. 143 FT8 messages attributed to this token as transmitter, on 80m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-20.

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 143 FT8 messages attributed to DO5RRS as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (100%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (88%); the estimated median was -1 dB.

Overview

143

Messages attributed

UTC dates decoded

Active 15-min windows

-1 dB

Estimated median S/N

Bands

80m · 143

First attributed message: 2026-06-08
Last attributed message: 2026-09-20 22:37 UTC

Observed FT8 message patterns

Attributed sample: 143 messages
Active dates: 5 UTC dates
Estimated median S/N: -1 dB
Estimated 10th-90th percentile: -9 to +6 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 17, strong (≥ -8 dB) 126.

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 DO5RRS in decoded directed-looking exchanges:

LZ2VQ · Bulgaria SV2CLJ · Greece DF7CB · Fed. Rep. of Germany DG1ASE · Fed. Rep. of Germany DK1RWR · Fed. Rep. of Germany DK6IF · Fed. Rep. of Germany DK7ZT · Fed. Rep. of Germany DO1ARD · Fed. Rep. of Germany DO1WFW · Fed. Rep. of Germany DO8JB · Fed. Rep. of Germany EA5HM · Spain EW8DU · Belarus

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 DO5RRS

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 · 79 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 770 km (approx.)
Last such locator decoded: 2026-09-20 22:31 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	DO5RRS S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 22:35	80m	+2 / -14	EW8DU	-4 / -11	10	✓ Full exchange observed
09-20 22:32	80m	- / -	EW8DU	-2 / -	3	Partial capture
09-20 22:31	80m	-2 / -5	SQ7TX	+2 / -4	4	✓ Full exchange observed
09-20 22:30	80m	+10 / -	DO8JB	+1 / -	3	✓ Closing observed
09-20 22:26	80m	+5 / +7	DK1RWR	-9 / +3	7	✓ Full exchange observed
09-20 22:23	80m	- / -15	G3SZG	+4 / -	2	✓ Closing fragment
09-20 22:18	80m	-6 / -	IU3WOZ	0 / +3	7	✓ Closing observed
09-20 21:36	80m	+2 / -	OH2FQV	- / -	3	Partial capture
09-20 21:35	80m	+3 / -7	G6PWS	-3 / -	5	✓ Full exchange observed
09-20 21:32	80m	-7 / -	EA5HM	-7 / -5	5	✓ Closing observed
09-20 21:29	80m	-5 / -	M0MQH	- / -1	3	Partial capture
09-20 21:27	80m	-2 / -11	SV5ADM	+1 / -16	6	✓ Full exchange observed
09-20 21:26	80m	+1 / +4	OM3PR	+11 / +5	5	✓ Full exchange observed
09-20 21:22	80m	+7 / -	DO5SMH	- / -	8	Partial capture
09-20 21:20	80m	+1 / -3	IQ4JO	+1 / +4	5	✓ Full exchange observed
09-20 21:16	80m	-4 / -	DG1ASE	-11 / +10	8	✓ Closing observed
09-20 21:15	80m	+1 / -	DO5SMH	- / -15	3	Partial capture
09-20 21:13	80m	+2 / -10	HB3XGP	+4 / -	4	✓ Full exchange observed
09-20 20:58	80m	-4 / -	LA3CSA	- / -	4	Partial capture
09-13 07:51	80m	- / +6	DK6IF	-24 / -	2	✓ Closing fragment
08-30 22:36	80m	- / -	RN6HK	+10 / -	2	Partial capture
08-30 22:36	80m	-1 / +2	LA0FA	+14 / -	5	✓ Full exchange observed
08-30 22:34	80m	0 / +1	F4JTM	+6 / +4	7	✓ Full exchange observed
08-30 22:12	80m	-2 / -	OK2ON	- / -	2	Partial capture
08-30 22:09	80m	-4 / -	M9ORB	- / -	2	Partial capture
08-30 22:01	80m	0 / +7	DF7CB	+6 / -	7	✓ Closing observed
08-30 21:57	80m	-5 / -	DH3SBB	- / -	8	Partial capture
08-09 11:23	10m	- / -15	LZ2VQ	-10 / -	2	✓ Closing fragment
06-28 22:18	80m	+4 / +6	DO1ARD	+6 / +9	5	✓ Full exchange observed
06-28 22:15	80m	+2 / -1	LZ01MIKU	+7 / -7	3	Partial capture
06-28 21:40	80m	0 / +7	DK7ZT	+1 / +1	6	✓ Full exchange observed
06-28 21:38	80m	+2 / +9	DO1WFW	0 / -3	4	✓ Full exchange observed
06-28 21:35	80m	-4 / +10	DL70ESSEN	-21 / -10	5	Partial capture
06-28 21:32	80m	+1 / +7	LA1PHA	0 / -8	7	✓ Full exchange observed
06-28 21:11	10m	- / -18	SV2CLJ	-6 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
223130  +1 1442  SQ7TX DO5RRS R-04
223145  +3 1442  DO5RRS SQ7TX RR73
223215  +1 1441  DO5RRS EW8DU KO52 (x3)
223530  -3 1442  EW8DU DO5RRS -11
223545  -1 1442  DO5RRS EW8DU R-14
223600  +5 1442  EW8DU DO5RRS -11
223615  -5 1441  DO5RRS EW8DU R-11
223630  -3 1442  EW8DU DO5RRS -11
223645  -3 1442  DO5RRS EW8DU R-07
223700  +6 1442  EW8DU DO5RRS -11
223715  -3 1442  DO5RRS EW8DU R-06
223730  +5 1442  EW8DU DO5RRS RR73
223745  -8 1442  DO5RRS EW8DU 73

10m

UTC    dB Audio  Message
211100  -5  658  DO5RRS SV2CLJ -18 (x3)
112330  -8 1403  DO5RRS LZ2VQ -15 (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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