Originally Posted by Silver Lariat
Unless they've changed since 06 the antenna simply screws into its base unit. Easy to remove and yes, you can replace them with shorter antennas - a wide variety available on ebay - and in various lengths. Search shorty antennas.
I changed mine out for a chrome 12" 'shorty' and reception was still fine. But (WARNING) the shorties - at least the one I bought - are not flexible like the OEM antenna. One trip too many thru the drive-thru car wash and my shorty broke off where it screws down INSIDE the antenna base. Now, I'm gonna have to change the entire base out. And I lost the antenna.
So if you replace it, look for flexibility in any replacement you get!
Retractable is a whole 'nother subject but they are out there and far more expensive and more difficult to install.
Or maybe hand wash next time
I understand that its alot of truck to wash I have a 2004 F150 Supercrew so yes i know its alot to wash but I think just taking the extra time and Hand Washing it pays off much better!