It's quite all right to open old threads with relevant questions. The group you are asking about must be answered by Gil.
You can find much information about that radio in this forum. Just use the Search button and enter < RT-320 > and search in all boards. I got about 35 hits, you might find something useful, and further links.
If you are on Facebook, there are two Clansman groups, one private and one public:
https://www.facebook.com/groups/3430377437041093/ [PRC-320 and Clansman Radios]
https://www.facebook.com/groups/1142368462513405/ [Clansman Information Group - Buy Sale And Trade - Show off your things!]
You can find much information about that radio in this forum. Just use the Search button and enter < RT-320 > and search in all boards. I got about 35 hits, you might find something useful, and further links.
If you are on Facebook, there are two Clansman groups, one private and one public:
https://www.facebook.com/groups/3430377437041093/ [PRC-320 and Clansman Radios]
https://www.facebook.com/groups/1142368462513405/ [Clansman Information Group - Buy Sale And Trade - Show off your things!]