[Alinco] Cross band repeat with DR-635T

[John E. Gercken]

I have a DR-635T mobile and the manual says you can do crossband repeat 
with it, but I can't find any reference as to HOW to do it.  I can do it 
with my old DR-605TQ just fine but I want to demote that rig to APRS in 
my vehicle and use the 635 for regular communications.
Also, I have a DR-620T but the book manual does not state cross band 
repeat as one of its features.  Can cross band repeat be done with it?  
Your help will be most appreciated.

73,

John Gercken, AA9UF