CT7BPM — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Portugal Most frequent locator attributed to this token: IN50

Receiver-side FT8 activity involving CT7BPM, decoded by SO8OO in southeastern Poland. 18 FT8 messages attributed to this token as transmitter, on 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-09-02 and 2026-09-13.

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 18 FT8 messages attributed to CT7BPM as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was -12 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-12 dB

Estimated median S/N

Bands

40m · 18

First attributed message: 2026-09-02
Last attributed message: 2026-09-13 23:46 UTC

Observed FT8 message patterns

Attributed sample: 18 messages
Active dates: 4 UTC dates
Estimated median S/N: -12 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 7, 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 CT7BPM in decoded directed-looking exchanges:

4L7T · Georgia 4X1UF · Israel A61FJ · United Arab Emirates DL3MIB · Fed. Rep. of Germany EA3HMM · Spain LZ2VQ · Bulgaria RD9U · Asiatic Russia T77NC · San Marino UN7LZ · Kazakhstan YO4NF · Romania Z62NS · Republic of Kosovo

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 CT7BPM

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: IN50 · 16 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,606 km (approx.)
Last such locator decoded: 2026-09-13 23:46 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	CT7BPM S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-13 23:40	40m	-6 / -	PY1USK	- / -	4	Partial capture
09-13 23:39	40m	-6 / -	OA4ENG	- / -	2	Partial capture
09-13 22:57	40m	- / -12	LZ2VQ	0 / -	3	✓ Closing fragment
09-13 22:54	40m	- / -21	RD9U	+13 / -	3	✓ Closing fragment
09-13 22:49	40m	-12 / -15	YO4NF	+3 / -8	3	✓ Full exchange observed
09-09 21:22	40m	- / -9	4L7T	-7 / -	3	✓ Closing fragment
09-06 20:13	40m	-16 / -	9A2DM	- / -	2	Partial capture
09-06 20:07	40m	- / -23	LA7PKA	-4 / -	2	Partial capture
09-06 20:02	40m	- / -5	EA3HMM	+6 / -	4	✓ Closing fragment
09-06 00:53	40m	- / -13	F5PBG	0 / -	2	Partial capture
09-06 00:40	40m	- / -5	T77NC	-2 / -	2	✓ Closing fragment
09-06 00:30	40m	-20 / -	TI5KLH	- / -	2	Partial capture
09-06 00:27	40m	- / -15	4X1UF	-8 / -	2	✓ Closing fragment
09-02 22:20	40m	- / -12	DL3MIB	+2 / -	6	✓ Closing fragment
09-02 22:20	40m	- / -	F5RRS	+10 / -	4	Partial capture
09-02 22:19	40m	- / -14	UN7LZ	+4 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
224930 -12 3043  YO4NF CT7BPM R-08
224945  +1 3043  CT7BPM YO4NF RR73
225445  +9  633  CT7BPM RD9U -21 (x3)
225715  +0 3044  CT7BPM LZ2VQ KN23 (x3)
233915  -6 2922  OA4ENG CT7BPM IN50 (x2)
234045  -5 2923  PY1USK CT7BPM IN50 (x4)
234645 -12  323  OA4ENG CT7BPM IN50

80m

UTC    dB Audio  Message
202145 -24 1502  CT7BPM CT2GQA R-06

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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