Good afternoon, I have the Sendero GPS and would like to find if I have any SMA's for the next upgrade. I have looked on the Sendero Group site and see no place for checking on this information. Help Please and thank you, Have a great day, Paul Bolduc Amateur Radio Operator: WR1X Email: WR1X@xxxxxxxx Located in the only town named Royalston in North America and maybe even the world. Royalston is located in Massachusetts, To change your email settings (unsubscribe, digest only, or vacation mode): http://senderogroup.com/social_media/email.htm Additionally, to unsubscribe send an email to gps-talkusers-request@xxxxxxxxxxxxx with "unsubscribe" in the Subject.