[Yaesu] Roofing Filter problems!

[Andreas Junge, N6NU]

Alfredo,

There is an amplifier on the filter board that is supposed to make up for
the filter losses. Maybe it's gain is to high. Use the "Hidden Menu" as
described in the installation instructions to lower the IF amplification to
adjust for that.

73,

Andreas, N6NU 


> -----Original Message-----
> From: Alfredo Velez WP3C [mailto:wp3c at aol.com] 
> Sent: Monday, April 20, 2009 4:35 PM
> To: yaesu at contesting.com
> Subject: [Yaesu] Roofing Filter problems!
> 
> Hi 
> 
>  
> 
>    When I install the filter to the Yaesu MP makes a QRM 
> (Noise) of 3 or 4 db, when removing the filter noise 
> disappears. Someone can give me an explanation? Thanks and 73’
> 
>  
> 
>  
> 
> Alfredo Vélez WP3C
> 
> Web: http://www.wp3c.qth.com
> 
> email: mailto:wp3c at aol.com
> 
> WP3C DX Cluster Node: telnet://wp3c.hopto.org
> 
>  
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