K8MDB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EM79

Receiver-side FT8 activity involving K8MDB, decoded by SO8OO in southeastern Poland. 4 FT8 messages attributed to this token as transmitter, on 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-09-07 and 2026-09-15.

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 4 FT8 messages attributed to K8MDB as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The available sample contains attributed decodes on 40 m (100%). The sample is too small to infer a recurring UTC-hour or received-S/N pattern.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

S/N pattern not inferred

Bands

40m · 4

First attributed message: 2026-09-07
Last attributed message: 2026-09-15 00:23 UTC

Observed FT8 message patterns

Attributed sample: 4 messages
Active dates: 2 UTC dates
S/N summary: Too few decodes
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

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 K8MDB in decoded directed-looking exchanges:

EC5M · Spain G3VCQ · England PV8AJ · Brazil RD6OB · European Russia

Most frequent locator attributed to K8MDB

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: EM79 · 4 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,775 km (approx.)
Last such locator decoded: 2026-09-15 00:23 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	K8MDB S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-15 00:23	40m	-14 / -12	SV9QWC	-7 / -	4	Partial capture
09-14 01:18	40m	- / -19	YO4NF	-16 / -	2	Partial capture
09-14 00:44	40m	- / -	DL3MIB	+2 / -	4	Partial capture
09-14 00:41	40m	- / -10	DK7ZT	-19 / -	3	Partial capture
09-14 00:41	40m	- / -	DL3MIB	+6 / -	3	Partial capture
09-14 00:36	40m	- / -17	EC5M	-2 / -	2	✓ Closing fragment
09-14 00:32	40m	- / -14	SV9QWC	-7 / -	3	Partial capture
09-11 00:05	40m	- / -2	PV8AJ	-16 / -	2	✓ Closing fragment
09-09 23:35	40m	- / -5	EA5JLN	-14 / -	2	Partial capture
09-07 00:57	40m	-19 / -	KA0WAS	- / -	3	Partial capture
09-07 00:54	40m	- / -12	RD6OB	+8 / -	4	✓ Closing fragment
09-07 00:44	40m	- / -	EB3JT	-12 / -	3	Partial capture
09-06 23:22	40m	- / -	F5RRS	0 / -	4	Partial capture
09-06 23:20	40m	- / -5	G3VCQ	0 / -	5	✓ Closing fragment
09-06 23:15	40m	- / -4	DK7ZT	+1 / -	3	Partial capture
09-06 22:14	40m	- / -13	SV5BYP	+4 / -	3	Partial capture
09-06 22:09	40m	- / -13	MI0TMW	-7 / -	2	Partial capture
08-29 16:02	20m	- / -18	GM3AND	-16 / -	2	Partial capture
08-16 23:52	20m	- / -18	YO4NF	-14 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
004215  +6 1030  K8MDB DL3MIB JN57
004245 -20 1906  K8MDB DK7ZT -10
004445  -9 2739  K8MDB IQ4JO JN63
004445  +6 1030  K8MDB DL3MIB JN57
004515 -20 2010  K8MDB IZ4EFV JN64
004515  -5 1030  K8MDB DL3MIB JN57
004545 -10 2636  K8MDB SP5EXA KO02
004545  +4 1030  K8MDB DL3MIB JN57 (x2)
011800 -13 1030  K8MDB YO4NF -19 (x2)
002345 -14 1443  SV9QWC K8MDB EM79
002400  -7 1041  K8MDB SV9QWC -12 (x3)

20m

UTC    dB Audio  Message
235200 -13 1878  K8MDB YO4NF -18 (x2)
160200 -18 1127  K8MDB GM3AND -18 (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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