Such as the ANT-B33 orSFAS09. Once the car antenna is connected to the HDRT, AM/FM reception is no longer possible through the factory radio. If you wish to retain AM/FM through the factor radio you must split the Antenna Signal between them.
Discount Car Stereo > iPod Adapters & Interfaces > iSTY571 iPod, HD/Sirius Radio adapter for Select 2006- Up Toyota, Lexus and Scion
1998+ Toyota radio iPod Interface +Aux: Peripheral PXAMG PGHTY1
2009+ Mazda radio iPod Interface +Aux: iSimple ISMZ571
HD Radio Receivers, Tuners & Adapters
GROM HD Radio Tuner and Antenna
Compatible with most MP3 players, tablets and Android mobile phones. Will work with any aftermarket of factory FM radio. Able to install in one of
AUX and USB Installation Kit
iSimple HDRT Peripheral HD Radio Tuner Add-On for the PXAMG or CONNECT interface
Discount Car Stereo > iPod Adapters & Interfaces > iSimple iSHD571 iPod, Bluetooth, HD/Sirius Radio Gateway for Select 2003-11 Honda
iSimple HDRT Peripheral HD Radio Tuner Add-On for the PXAMG or CONNECT interface
2005+ GM radio iPod Interface +Aux: iSimple ISGM573