[1000mp] Roofing Filter

[Art Searle W2NRA]

Hi Douglas,

I seem to remember that the only reason for the reduction was for those that 
installed the 70MHz IF mod that required an increase in the IF gain.  The 
later IF kits didn't.  So if you have a later IF kit installed or no kit at 
all you should consider making no change to the IF gain on installing the 
Roofing Filter.  Can anyone back me up on this?  This is, of course, 
assuming my memory serves and it usually doesn't.  When it comes to memory I 
have Selective Total Recall.

73 Art W2NRA

From: <KB9GKC at aol.com>

>
> In a message dated 2/12/2006 11:12:16 P.M. Central Standard Time,
> rask1553 at bellsouth.net writes:
>
> Before  installing the roofing filter, I checked my IF gain setting 
> (hidden
> menu  9-1) and it was 31.  I believe most were claiming that the setting 
> was
> between 11 to 13 and that they had to reduce it one or two units after the
> mod.  Why is mine set at 31?
>
>
>
> When the factory alignment is done the numbers for the IF gain land all 
> over
> the place.  Don't worry about it, just make a note of it in the manual 
> for
> future reference.
>
> Enjoy the roofing filter, it's exactly what the 1000MP needed to keep up
> with the new radios.
>
> 73
> Douglas