Has anyone used a modern Sirius chrysler antenna on an old Mopar?

67Dart273 said

Subscription (Sirius) does not operate on AM/FM frequencies. I know nothing about this antenna. I would guess it would not work well on AM/FM

"The short answer" is remember the old 9 ft CB whips? That was a "quarter wavelength" on CB frequency band. That would be one form of "optimized" antenna. Generally, the shorter the antenna and the lower the frequency, the worse things work. Factory AM FM antennas are a compromise at best in the AM band. On FM "they ain't bad". A quarter wave on the FM band (88-108 mhz) is roughly 2 ft long at 108, about 2 1/2 at 88mhz

A REALLY GOOD AM antenna LOL would require a balloon to keep it aloft!! (425 to 137 feet)

Click to expand...

67Dart273 Thanks for the scientific answer and energy I really appreciate it. I completely understand the wavelength information and how FM works. Thank you. I am not trying to get Satellite on a STD antenna. I am trying to find a modern factory (for quality and longevity and bolted down) 3 in one antenna for the Barracuda and use a modern radio (GPS, Sat, AM/FM, bluetooth) in the car and care less about the 66' factory radio- I just want to put the car in drive and go, hence the car is modern fuel injection, disk brakes, etc. The factory radio antenna in most early a-body's were too short for FM radios anyhow for a clear signal. An FM antenna is like 2.75" longer than the am antenna and it is why FM reception is sometimes so bad on these older cars with out a FM booster. Trust me they will work but are not right. My car will look period correct but modernized where it needs to be.
Thank you,
Joe