On 11/25/2025 10:00 AM, Jeff (W4DD) wrote: > Also uploaded the full 80M spectrum, 3500 to 4000. Some slight banding is visible, -79 lvl @6KHz. Is there any sort of front end filtering engaged? If so, can it be disabled or bypassed? I'm trying to figure out how broadband the noise is. When I'm asking for a very wide spectrum, I'm thinking 10 MHz or more. 73, Jim K9YC