K7TM — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States

Receiver-side FT8 activity involving K7TM, decoded by SO8OO in southeastern Poland. 6 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-09-04 and 2026-09-05.

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 6 FT8 messages attributed to K7TM as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (67%), followed by 80 m (33%). In this small sample, the estimated median decoder S/N was -16 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-16 dB

Estimated median S/N

Bands

80m · 2 40m · 4

First attributed message: 2026-09-04
Last attributed message: 2026-09-05 01:27 UTC

Observed FT8 message patterns

Attributed sample: 6 messages
Active dates: 2 UTC dates
Estimated median S/N: -16 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 3, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 3.

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 K7TM in decoded directed-looking exchanges:

8Q7PR · Maldives

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	K7TM S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-19 04:20	160m	- / -	OM2FY	+17 / -	2	Partial capture
09-18 01:21	160m	- / -	9A5E	+2 / -	3	Partial capture
09-18 01:20	160m	- / -18	DL1KDA	-8 / -	18	Partial capture
09-18 01:20	160m	- / -	OK1DXR	+6 / -	8	Partial capture
09-18 01:20	160m	- / -	IZ0BVU	-5 / -	4	Partial capture
09-05 01:27	40m	- / -	DK7ZT	-22 / -	2	Partial capture
09-05 01:27	40m	- / -	F6FHZ	-10 / -	2	Partial capture
09-05 01:22	40m	-17 / -	8Q7PR	- / -14	3	Partial capture
09-04 03:22	80m	- / -14	DL1KDA	-3 / -	15	Partial capture
09-04 03:20	80m	- / -	DO9BAU	+3 / -	13	Partial capture
09-04 03:20	80m	- / -	LY1DY	+1 / -	4	Partial capture
09-04 03:20	80m	- / -	PA3KUS	-9 / -	6	Partial capture
09-04 03:17	80m	+12 / -	RI1FJL	- / -14	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
012500  -9  997  K7TM DL1KDA -18
012530  +1 1295  K7TM OK1DXR JO60
012530  -8  997  K7TM DL1KDA -18 (x11)
042045 +16 2288  K7TM OM2FY JN88 (x2)

40m

UTC    dB Audio  Message
012245 -17 1825  8Q7PR K7TM -14 (x3)
012430 -17 2450  K7TM UA3PHB KO83
012700  -3 1850  8Q7PR K7TM RR73
012715 -10  394  K7TM F6FHZ JN18
012715 -20 1906  K7TM DK7ZT +12
012745 -14 1483  K7TM UB4HVA LO53
012815 -24 1906  K7TM DK7ZT +12
012845  -9  392  K7TM F6FHZ JN18

80m

UTC    dB Audio  Message
032430  +8 2402  K7TM DO9BAU JO62
032430  -4 1276  K7TM DL1KDA -14
032500  +9 2402  K7TM DO9BAU JO62
032500  +1 1276  K7TM DL1KDA -14
032530  +7 2402  K7TM DO9BAU JO62
032530  +1 1276  K7TM DL1KDA -14
032600  +8 2402  K7TM DO9BAU JO62
032600  +1 1276  K7TM DL1KDA -14 (x8)

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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