Being Long or Short is not the problem - if it was simple vertical with a ground plane with no loading coil - like a whip on a automobile - yes - you would be right.

But when dealing with a Ringo - which uses a ring to adjust the capacitive / inductive and also uses a tuning stub match - each part of the antenna works against each other..

Even now, the antenna on the VSWR Bridge shows a 2:1 match!

But I figure the Ring is probably 9 inches too shot - if the ring is 7.5 inches in diameter and needs to be 10 and the stub is too short - if it needs to be 18 inches long and is only 6....

The Antenna Analyzer would tell me the Resistive / Reactive components and all I would have to do is match them and it would work on any one frequency.

This is the problem with the Ringo - why it is not broad banded.
The main use where I live was by people who were installers of LMRS equipment that sold them along with a radio to fire companies and ambulances....