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

[Tommy]

Hi Bill,

I have two Omni 6 Plus rigs, fully filtered for CW and both rigs have 
the 600hz roofing filter. One rig has the 750 hz offset and my main 
radio has a 500hz offset. When you can drop 30 over QRN down to 
S-5/S-7 without dropping the rcv'd signal level, I definately think 
the addition of the roofing filter is worthwhile. Not only does it 
improve rcvr performance in contest, it help in just about all CW 
situations when a loud signal park's right next to you or you have a 
bad QRN condition.

My wed 
site  http://tom.w4bqf.googlepages.com/roofingfilterforomni6plus 
shows some Spectragram plots of the Plus with and without the roofing 
filter and gives you an example of how well it works.

Tom - W4BQF



At Monday 04:01 PM 8/7/2006, you wrote:
>This question has probably been asked before so I apologize
>in advance.
>
>I have an Omni VI+ loaded with filters (including an INrad
>400hz cw filter in the n1 position).   The RX performance is great 
>compared to my Icom 756 pro II.  I'm wondering if the already great 
>performance can be improved by adding the
>INRAD 600hz roofing filter.  I like to work dx but my antenna 
>situation is poor at best.  Would the addition of
>the roofing filter provide any signal/noise improvement?
>I know it would probably help in contest situations where strong 
>close-in signals tend to cover up weak dx signals.
>Have any of you used the INRAD roofing filter for the OMNI
>series and what if any improvements did you note.
>
>    thanks,  Bill - W5HTG
>
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