[1000mp] Roofing filter

[D. J.]

On 04, Jun 2005, at 14:50, Steven J Fraasch wrote:

> Mike:
>
> I think you'll need to decrease gain, at least that is what a few  
> of us
> did.  The INRAD instruction advices leaving it alone (if the 70 MHz  
> mod
> was not done before), but my roofing filter added about 6 dB of gain;
> therefore I reduced it.  I believe my menu 9-1 setting is "9".   
> Tim, K3LR
> recommended setting it so that the S meter is the same as that of  
> the sub
> receiver.
>
> My stock radio came with 9-1 set to "13," I believe with the roofing
> filter the front-end gain will be too high, and you will sustain  
> loss in
> IP34 and blocking dynamic range.  I usually operate my MK V in the IPO
> position anyways; therefore, the extra gain would be unwanted.
>
>


Mine also came with 13.  After the roofing filter install I set it to  
11.

dj