On 5/29/2019 20:57, Fred Jensen wrote:
Noise blankers were designed for repetitive impulse noise, the largest former example of which was ignition noise from vehicles. They have not ever been very effective against power line hash which tends to be non-impulsive and highly random.
That has not been my experience. Most line noise IS impulsive, and some noise blankers can be quite effective, but only if there are no strong signals nearby. I'm hoping a direct sampling receiver could avoid that problem. One method that has been used in the (distant) past was a second receiver tuned to a nearby but clear frequency to control the noise blanker. It seems that a direct sampling receiver ought to be able to do something like that.
73, Scott K9MA -- Scott K9MA k...@sdellington.us ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
