DL3ARH — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO51

Receiver-side FT8 activity involving DL3ARH, decoded by SO8OO in southeastern Poland. 46 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 10m, across 3 UTC dates in the available aggregate history. Observed between 2026-06-14 and 2026-09-07.

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 46 FT8 messages attributed to DL3ARH 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 (74%), followed by 10 m (17%) and 60 m (4%). Several six-hour UTC windows tied for the largest share (78%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (83%); the estimated median was +4 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

+4 dB

Estimated median S/N

Bands

80m · 34 60m · 2 40m · 2 10m · 8

First attributed message: 2026-06-14
Last attributed message: 2026-09-07 04:03 UTC

Observed FT8 message patterns

Attributed sample: 46 messages
Active dates: 3 UTC dates
Estimated median S/N: +4 dB
Estimated 10th-90th percentile: -13 to +12 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 4, strong (≥ -8 dB) 38.

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 DL3ARH in decoded directed-looking exchanges:

ER1CW · Moldova DL1EDR · Fed. Rep. of Germany DL1HDL · Fed. Rep. of Germany DL2RUG · Fed. Rep. of Germany DO1OAS · Fed. Rep. of Germany DO1TOM · Fed. Rep. of Germany DO7MEW · Fed. Rep. of Germany EI4JFB · Ireland F6BHK · France LZ2VQ · Bulgaria ON1BH · Belgium UA4FKT · European Russia

Most frequent locator attributed to DL3ARH

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: JO51 · 14 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 779 km (approx.)
Last such locator decoded: 2026-09-07 04:03 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	DL3ARH S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-07 04:03	40m	-11 / -	KS1WK	- / -	2	Partial capture
08-29 22:15	80m	+2 / -	YO6LM	- / -	2	Partial capture
08-29 22:14	80m	+5 / -	ON1BH	-5 / +4	3	✓ Closing observed
08-29 22:12	80m	+10 / +2	DO7MEW	-2 / +9	5	✓ Full exchange observed
08-29 22:10	80m	+10 / +8	DO1TOM	-3 / +6	5	✓ Full exchange observed
08-29 22:07	80m	+4 / -	F6BHK	- / -4	2	✓ Closing fragment
08-29 22:07	80m	+4 / -	DO5PY	-6 / -	4	Partial capture
08-29 22:06	80m	+4 / -10	LZ2VQ	+7 / -	4	✓ Closing observed
08-29 22:05	80m	+10 / -	DL1HDL	- / -	2	✓ Closing fragment
08-29 22:04	80m	+10 / -	SV9MBH	- / -10	2	Partial capture
08-29 22:03	80m	+13 / -	DO1OAS	- / +2	2	✓ Closing fragment
08-29 22:00	80m	+10 / +3	UA4FKT	+12 / +9	6	✓ Full exchange observed
08-29 21:59	80m	+8 / -	DL1EDR	+5 / -	4	✓ Full exchange observed
08-29 21:59	80m	+10 / +3	DL2RUG	-8 / -3	8	✓ Full exchange observed
08-29 21:57	80m	+5 / -	EI4JFB	- / 0	3	✓ Closing fragment
08-29 21:55	60m	- / -	US2YW	-2 / -	3	Partial capture
08-29 21:53	60m	0 / 0	ER1CW	-12 / -	4	✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
040300 -13  757  KS1WK DL3ARH JO51 (x2)

80m

UTC    dB Audio  Message
221100  -1 1105  DL3ARH DO1TOM R+08
221115  +8 1104  DO1TOM DL3ARH RR73
221130  -8 1105  DL3ARH DO1TOM 73
221200  -9 1105  DL3ARH DO7MEW JO42
221215  +8 1104  DO7MEW DL3ARH +09
221230  +3 1105  DL3ARH DO7MEW R+02
221245 +12 1104  DO7MEW DL3ARH RR73
221300  +0 1105  DL3ARH DO7MEW 73
221315  +1 1104  CQ DL3ARH JO51 (x2)
221415  +7 1104  ON1BH DL3ARH R+04
221430  -5 1953  DL3ARH ON1BH RR73
221445  +3 1104  ON1BH DL3ARH 73
221515  +0 1104  YO6LM DL3ARH +11 (x2)

60m

UTC    dB Audio  Message
215345  +0 1688  ER1CW DL3ARH JO51
215400 -10 1689  DL3ARH ER1CW +00 (x2)
215445  +0 1688  ER1CW DL3ARH 73
215500  -2 1689  DL3ARH US2YW KN28 (x3)

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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