Smeal does still provides aerials to Ferrara with their specifications for length.
Also the Pierce mid-mount 5 section aerial is similar to the Smeal mid-mount 5 section aerial, that was being designed prior to the Smeal / Pierce split in the 1990s. If I remember correctly from what I was told, it was a combined effort by Smeal and Pierce to design the 5 section. There are some differences made though after their split. At least that is what I was told / remembered when I was out at the Smeal factory back in 2005.
Also the Pierce mid-mount 5 section aerial is similar to the Smeal mid-mount 5 section aerial, that was being designed prior to the Smeal / Pierce split in the 1990s. If I remember correctly from what I was told, it was a combined effort by Smeal and Pierce to design the 5 section. There are some differences made though after their split. At least that is what I was told / remembered when I was out at the Smeal factory back in 2005.