On 1/22/2014 2:06 PM, Joel Black wrote:
I'm not bashing the filter, but I'm pretty happy with my 2.7 kHz and 500 Hz filters (main and sub receiver). What would be the benefit of the 700 Hz filter?
I have a 2.7 and 500 too and they seem to be all I need. They're roofing filters whose only job is to keep very strong signals adjacent to the BW [set by the DSP] that you're listening to from activating the HW AGC that protects the ADC. If you have neighbors who run a lot of power, or are physically close, the narrower filter would seem to be valuable. That said, I usually run CW at 200-250Hz DSP BW, RTTY takes a minimum of 300Hz, and I can't understand SSB at anything much less than 1.8KHz.
That's a lot just to say, "I guess I don't know." Maybe the passband is smoother on the 700Hz filter?
73, Fred K6DGW - Northern California Contest Club - CU in the 2014 Cal QSO Party 4-5 Oct 2014 - www.cqp.org ______________________________________________________________ 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
