[TenTec] Inrad roofing filters for Omni VI, anyone using?

Chuck Guenther ni0c at earthlink.net
Thu Feb 10 09:32:54 EST 2005


K8DIT wrote: "Because the 2.4khz roofing filter is 25% of the stock12khz roofing filter in
bandwidth, one could surmise that there is an improvement of some
significance on cw over the 12khz stock roofing filter, though, not as much
as the 1khz.
Is this a correct deduction? Either way it would be interesting to find out
quantitatively what that difference might be."


Yes, the SSB roofing filter should provide improved IMD numbers because it is much narrower than the 15 KHz stock filter in the Omni VI.  The CW roofing filter  has a nominal bandwidth of 600 Hz, not 1 KHz.  I believe the INRAD web-site has numbers on the projected performance characteristics of each of the roofing filters.

73 de Chuck  NI0C


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