DO5SMH — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JN59

Receiver-side FT8 activity involving DO5SMH, decoded by SO8OO in southeastern Poland. 37 FT8 messages attributed to this token as transmitter, on 80m, across 1 UTC dates in the available aggregate history. Last observed 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 37 FT8 messages attributed to DO5SMH as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (100%). In this small sample, the estimated median decoder S/N was -15 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-15 dB

Estimated median S/N

Bands

80m · 37

First attributed message: 2026-09-20
Last attributed message: 2026-09-20 21:19 UTC

Observed FT8 message patterns

Attributed sample: 37 messages
Active dates: 1 UTC dates
Estimated median S/N: -15 dB
Estimated 10th-90th percentile: -20 to -7 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 17, moderate (-15 to -9 dB) 14, strong (≥ -8 dB) 6.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with DO5SMH in decoded directed-looking exchanges:

IU3MAG · Italy ×2 DH5BO · Fed. Rep. of Germany DJ3ZF · Fed. Rep. of Germany DK6WS · Fed. Rep. of Germany DL1UDO · Fed. Rep. of Germany DL3JHK · Fed. Rep. of Germany DL6UM · Fed. Rep. of Germany DO5SB · Fed. Rep. of Germany F6BHK · France IK3/UY7LA · Italy ON4MAP · Belgium OZ5AGJ · Denmark

Most frequent locator attributed to DO5SMH

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: JN59 · 15 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 777 km (approx.)
Last such locator decoded: 2026-09-20 21:19 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	DO5SMH S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 21:22	80m	- / -	DO5RRS	+7 / -	8	Partial capture
09-20 21:17	80m	-18 / -	DK0KG	-6 / -7	3	Partial capture
09-20 21:15	80m	- / -15	DO5RRS	+1 / -	3	Partial capture
09-20 21:10	80m	- / +1	DJ3ZF	+2 / -	4	✓ Closing fragment
09-20 21:10	80m	- / -	DL7ACN	-2 / -	6	Partial capture
09-20 21:08	80m	-19 / -16	F6BHK	-13 / -10	4	✓ Full exchange observed
09-20 21:07	80m	- / +2	IK3/UY7LA	+12 / -	3	✓ Closing fragment
09-20 21:05	80m	- / -8	PC2J	-1 / -	3	✓ Closing fragment
09-20 21:04	80m	- / -15	DL6UM	+3 / -	3	✓ Closing fragment
09-20 21:03	80m	- / -17	DK6WS	-2 / -	2	✓ Closing fragment
09-20 20:56	80m	-12 / -17	ON4MAP	-16 / -	4	✓ Closing observed
09-20 20:54	80m	-16 / -	DO5SB	+3 / -	5	✓ Full exchange observed
09-20 20:52	80m	-14 / -	PC2J	- / +1	3	Partial capture
09-20 20:52	80m	- / +1	DH5BO	-2 / -	2	✓ Closing fragment
09-20 20:51	80m	- / -	DL8TV	+3 / -	3	Partial capture
09-20 20:49	80m	-8 / -6	SP3JHZ	+5 / +3	5	✓ Full exchange observed
09-20 20:45	80m	-8 / -	OZ5AGJ	0 / -3	5	✓ Closing observed
09-20 20:43	80m	- / -10	DL3JHK	-10 / -	3	✓ Closing fragment
09-20 20:40	80m	-20 / -	EC5M	- / -	3	Partial capture
09-20 20:36	80m	-15 / -22	DL1UDO	+1 / -	3	✓ Closing observed
09-20 20:34	80m	-12 / -10	SP5HQZ	+12 / +2	4	✓ Full exchange observed
09-20 20:31	80m	- / -18	OE5ABL	+8 / -	2	Partial capture
09-20 20:29	80m	-18 / -10	IU3MAG	-2 / -7	5	✓ Full exchange observed
09-20 20:20	80m	-19 / -	PA1KDB	- / -13	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
211530  +3  500  DO5SMH DO5RRS R-15 (x2)
211700  -6 1254  DO5SMH DK0KG JN49
211745 -20  500  DK0KG DO5SMH -07 (x2)
211915 -15  501  CQ DO5SMH JN59 (x2)
212200  +7  501  DO5SMH DO5RRS JO50 (x8)

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