Can an FRS unit be a base station?
FRS: No. The ONLY base stations allowed in GMRS interstitial channels are the Small Base Stations (FCC Station Class FBA) of the General Mobile Radio Service. These FBA stations are allowed on FRS channels 1-7. The FCC rules are very specific about attaching external antennas to these radios. You are not permitted to do it. You may hear rumors that base stations (classified as FRB) are OK, but that is JUST a rumor, or perhaps something that was once considered in an FCC rule making. Read the FCC rules for the Family Radio Service.