[TenTec] Inrad 1000 Hz filter #766

Tue Apr 29 09:16:43 EDT 2008

I am reading up on new technology that has come about since I left ham radio back in 1985. Interesting to read about using multiple filters and then controlling the bandwidth by "shifting" one filter's passband in regards to the other.

In the Omni-C filters are "cascaded" and (if I am correct) the bandwidth is the same as the narrowest filter.  I  have been thinking about getting a 500 Hz (400 Hz) CW filter while being well aware that the audio filters do an admirable job. 

Browsing the old Inrad website I find that there is a 1000 Hz filter. I wonder what the benefits of using such a filter could be in the Omni-C. (I am asking since I saw one posting in which the gentleman mentioned he was using a 1.8 Khz filter and the 500 Hz audio filter and thought that was about the perfect combination)

Many thanks in advance
Marinus,ZL2ML
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