W9CBS — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: FM19

Receiver-side FT8 activity involving W9CBS, decoded by SO8OO in southeastern Poland. 17 FT8 messages attributed to this token as transmitter, on 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-16 and 2026-08-22.

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 17 FT8 messages attributed to W9CBS as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). 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

20m · 17

First attributed message: 2026-06-16
Last attributed message: 2026-08-22 04:22 UTC

Observed FT8 message patterns

Attributed sample: 17 messages
Active dates: 6 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) 9, moderate (-15 to -9 dB) 7, strong (≥ -8 dB) 1.

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 W9CBS in decoded directed-looking exchanges:

4X1UF · Israel 5Z4VJ · Kenya DB7GE · Fed. Rep. of Germany DL3MIB · Fed. Rep. of Germany F4MXU · France F6DZU · France GJ0KYZ · Jersey HZ1TT · Saudi Arabia IK4TVP · Italy LZ1VVD · Bulgaria N4YYV · United States OD5ET · Lebanon

Most frequent locator attributed to W9CBS

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: FM19 · 8 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,310 km (approx.)
Last such locator decoded: 2026-08-22 04:22 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	W9CBS S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-22 04:22	20m	-10 / -	Z35T	- / -	2	Partial capture
08-20 06:17	20m	- / -12	DB7GE	+8 / -	2	✓ Closing fragment
08-20 06:17	20m	- / -	DL2JB	+2 / -	4	Partial capture
08-20 05:32	20m	- / -	DL4JG	-12 / -	2	Partial capture
08-20 05:31	20m	- / -15	F4MXU	-10 / -	4	✓ Closing fragment
08-20 05:16	20m	- / -19	DL3MIB	+17 / -	6	✓ Closing fragment
08-20 05:14	20m	- / -	DG1KDD	+15 / -	5	Partial capture
08-20 05:12	20m	- / -	PA3KUS	-8 / -	2	Partial capture
08-20 05:09	20m	- / -19	LZ1VVD	-14 / -	4	✓ Closing fragment
08-20 05:06	20m	- / -	DL8ZBA	-6 / -	2	Partial capture
08-20 05:03	20m	- / -14	OD5ET	0 / -	2	✓ Closing fragment
08-06 04:34	20m	- / -18	UA6HBJ	+1 / -	3	Partial capture
08-01 04:46	20m	- / -16	HZ1TT	-17 / -	3	✓ Closing fragment
07-31 03:45	20m	- / -24	SV5BYP	-8 / -	5	✓ Closing fragment
07-18 06:21	20m	- / -6	F6DZU	-7 / -	3	✓ Closing fragment
07-18 01:19	20m	- / -20	IK4TVP	-18 / -	3	Partial capture
07-04 01:56	20m	- / -16	SV9ANC	+4 / -	2	✓ Closing fragment
07-04 01:34	20m	- / -17	A61CK	-12 / -	3	Partial capture
07-03 07:54	20m	- / -18	GJ0KYZ	0 / -	2	✓ Closing fragment
06-30 03:22	20m	- / -6	OD5KU	0 / -	2	✓ Closing fragment
06-30 03:11	20m	- / -12	A71QQ	-12 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
053200 -12  550  W9CBS F4MXU JN25
053200 -16 1501  W9CBS DL4JG JO31 (x2)
053330 -12 2613  W9CBS F4MXU R-15 (x2)
061715  +1 2696  W9CBS DL2JB JO31
061715  +9 2253  W9CBS DB7GE R-12
061745  +2 2696  W9CBS DL2JB JO31
061745  +7 2253  W9CBS DB7GE 73
061815  +2 2696  W9CBS DL2JB JO31 (x2)
225315  -4 2965  A92AE W9CBS FM19
225630 -16 1477  W9CBS IW3BYL JN56
042200 -10 2821  Z35T W9CBS FM19 (x2)

60m

UTC    dB Audio  Message
051730 -12  284  W9CBS DL3MIB JN57

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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