Very simple AM/FM antenna question... Help much appreciated!
I have a very quick question that I couldn't find an answer for through a search.
Is there typically a separate gain stage for car radio antennas? i.e. Is the RF signal that is being picked up by the antenna amplified before being processed by the rest of the circuitry in the headunit, or are these radio stations blasting enough RF power that the car radio antennas don't need any gain?
I'm sorry if some of you perceive this as a stupid question, but I need to be sure.
In my car, I took the stock antenna wire, added an antenna cable extension, cut off the end, and soldered it to a miniplug, which I then plugged into the RadioShark (the headphone input is supposed to double as an input). Now, I'm just getting static, so I figure that I may need to amplify the signal (this would make sense if the stock headunit had its own antenna preamp).
Am I thinking correctly or am I totally offbase? Anyone have any recommendations for a good amp that can do AM and FM frequencies?
Thanks very much!