RCA DT100M Bi-Directional RF Mini Drop Amplifier RF AMPLIFER BI-DIRECT AMPLIFIES CABLE &amp; ANTENNA SIGNAL TO ELIMINATE SIGNAL LOSS OVER LONG RUNS ; BI-DIRECTIONAL AMPLIFIES SIGNAL &amp; PROVIDES RETURN PATH FOR CABLE MODEM ; 54 MHZ1000 MHZ PERFORMANCE ; 12V DC INPUT; INCLUDES ADAPTER ; DESIGNED FOR USE WITH CABLE MODEMS, ;CABLES