Thank you for the question and welcome to the community.
You might want to look into the Turk AM antenna. This does not need to be plugged into the system anywhere, just needs to be placed on the side of the system to improve AM signal to any radio.
More information on this can be found HERE.
If you have any other questions, let us know.
Joel - Community Support
Oct 20, 2018
Besides the TERK (the correct spelling) Antenna, by all means check out the Twin Coil Ferrite AM Antenna, both available from the C. Crane Company at ccrane.com . I've done business with them for years and their products (and customer service) are beyond reproach.