Hi Tom, I don't have a KRX3 yet (it's backordered), but I've been using a K3 for a while. If you've gone into setup for each filter, told the software what bandwidth filter is in each filter position, and turned each filter on, as you slowly turn bandwidth control you should hear an audibly greater change in the character of the band noise when the roofer kicks in or out.
The roofer switches in at whatever frequency you tell the software. You can tell it, for example, that the 400 Hz filter is a 500 Hz filter, and it will kick in at 500 Hz. BTW -- several of us with the capability to measure the filters have found that the 8-pole filters DO have enough slop in their center frequency that you MAY need to shift their centering at bit. My 400 Hz filter is about 45 Hz off, so it was a tossup between 40 and 50 Hz. 73, Jim K9YC On Wed, 6 Aug 2008 00:14:24 -0400, Tom W8JI wrote: >How do I know the roofing filters in the KRX3 are being >selected? Are they automatically selected when the roofing >filter in the main receiver is picked? _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
