Re: [TenTec] Omni6+ mods: 125hz cw filter and 2 khz roofing filter

["Mark Erbaugh" <mark@microenh.com>]

Yuri,

>  OmniVI is probably the only rig that
> allows to cascade 3 socketed filters. I used 600Hz filter as the first
> (roofing) filter and then various combinations in 9 and 6 MHz IFs. I also
keep
> combination of TT and INRAD filters. With QRN TT filters (simpler) have
less ringing
> on static crashes. When sharper skirts are needed, INRAD filters rein.

I didn't realize that there were 3 filters in the chain. I only thought that
there were the two at 6 MHz and 9 MHz.  Was the 600 Hz roofing filter a
hardware change? I assume that this dedicates the radio to narrowband modes
as a 600 Hz roofing filter would be too narrow for voice.

73,
Mark