I recently installed the sub-receiver in my K3 and when comparing the filter performance between the two I realized that I have a problem with one of the filters in the main receiver. All filters are 8-pole and each receiver has a 2.8khz, 1.8khz and 250hz filter. The filter configuration is exactly the same for both receivers.
Listening to the sub-receiver and narrowing with the Width control I can hear the change as I pass from filter to filter and the volume stays the same for each filter. However on the main receiver as I pass from to 2.8khz to the 1.8khz, the volume drops by about 2/3 and as I pass from the 1.8khz to the 250hz, the volume returns to the same level as the 2.8khz filter. I suspect that either the 1.8khz filter has a problem or I may have a problem with dirty contacts. Before I open up the radio and try swapping the 1.8khz filters to see if the problem follows the filter, I wanted to be sure I was not missing some other cause or configuration issue. Any comments would be appreciated. Thanks, Al W7SYK ______________________________________________________________ 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
