[TenTec] Inrad 600hz Roofing Filter for OMNI VI+

[Dennis OConnor]

I installed that roofing filter for CW in my 564...  Being that it is a quick install job and it was a contest weekend I found a station that was running a frequency and carefully listened in and around him using the cascaded 500/250  and the 250/250 cycle filters... Then I opened the radio and did the install and repeated my listening to this station.. There is a distinct improvement in the monkey chatter (phantom signals from IMD)... The band seems less cluttered...  The best test is where I have the 250 cycle filter selected (6.3 IF) and then select N1 which is a 250 cycle in the 9 IF which also turns on the roofing filter... There is a distinct improvement with the 600 roofing filter and the pair of 250's cascaded over what I was hearing with jus tthe cascaded 250's...  
My N2 is a 250 cycle for RTTY so the 600 roofing filter is not selected when using this filter... You will see how to make these choices when you do the install...

I also have one of George's roofing filters in a MK-V and I feel it helps significantly...

denny - k8do

 		
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