Need Help!!! (RELM Mini-Comm MP32 ) from someone who knows more than me, which shouldn't be hard.
 

Can anyone provide any information on modifications that are available
for the RELM Mini-Comm MP32 , specifically the MPU32A. I am especially
interested in extending frequency range., The specs on this radio put
the frequency range for the MPU32 (A) at 403 to 430MHz and the MP32 (B)

at 450 t0 480MHz, I would like to see if I can extend the (A) range
into the (B) range. Any suggestions, especially web sites with the info

would be helpful.