Multichannel RF filter

I'm somewhat new to the DSP world and would like some help in recommending
a particular board for my application.

I would like to filter multiple channels in the RF spectrum.  The RF
spectrum would be downconverted to the bandwidth of the particular board. 
The maximum RF spectrum width would be 60MHz.

One channel bandwidth would be 12.5kHz with adjustments to 100kHz.  I
would like to filter 8-12 channels simultaneously.

I see alot of audio and data applications however, hardly any RF
multi-channel filter applications for DSP.  

Which particlar board should I look at using for this application?