Posted by swlem3 on January 01, 2024 at 20:40:54.

In Reply to: Re: managing utility noise posted by swlem3 on January 01, 2024 at 16:37:44.

Well, I'm going to wrap this project up. I added the reversing phase switch at the main antenna port on the unit today. That was needed, as on some bands I couldn't find a noise null before the addition of the switch. The phaser now operates much more smoothly to cancel noise. So, at least with my "working conditions" at this qth, the phaser operation was improved by isolating the two incoming antenna ports from chassis ground as well as adding the reversing phase switch. The unit will operate somewhat below it's recommended 1 mhz frequency cutoff if you take extra measures to work with it. Again, this is not a "set it and forget it" noise canceller. Manual adjustments have to be made as you move up and down in freq. Sometimes, it's actually better to use the software blankers within your sdr program. At times, they produce a higher snr than using the canceller. That's why I mentioned doing a "sanity check" by taking the canceller out of line and just trying your programs software blanker. You can be fooled by thinking that a dip in the noise from the canceller will always deliver the best snr.

Follow Ups: