After enduring a trip last year with antenna failure I decided to purchase my own magnetic version. A co-worker that's quite the radio guru ordered a mag mount for me that I carry in my grip. The company web site is listed below.
Go to product search. Type in antenna in the search box. On the fourth page look for model # Val Vaa 002B. This little jewel was only $23.99.
Instructions are included for cutting to the proper length.