Earlier I gave an example of a situation where you might choose to enable a roofing filter at a bandwidth wider than the bandwidth marked on the filter. I also gave a poor example of enabling a filter at a narrower bandwidth. Here is a better one:
You use a variety of digital modes with different bandwidths, one of which happens to be the same as or close to the bandwidth of one of your roofing filters. You find that when that roofing filter is engaged, that particular digital mode does not decode as well as it does with a wider filter setting. You might find that changing the configuration to switch that filter in at a narrower setting allows that particular mode to decode well, without having a noticeable adverse effect on the next narrower bandwidth mode you normally use. The likelihood of all this happening in combination with an actual need for a tight roofing filter because of nearby very strong signals might be quite low, but there is at least a theoretical possibility of such a scenario. There are probably more likely situations - just pointing out that it is not impossible that someone might want to do this. The good thing is, the capability is there if you somehow find that you need it. 73, Rich VE3KI ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
