On 9/10/2012 7:40 PM, Channel Jumper wrote:
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.

No problem even with loading coils. Or when using the various
matching systems. They all act fairly predictably.


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!

Sure, it needs more inductance.

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....

For a 10m ringo 18 inches would be about right with it tapped
about halfway. I think one I made used about a 20 inch dia turn.
But I didn't need all of it.


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.

Sure.. But I can do it by sense of smell.. Plenty of practice.. :/


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....


It should have about the same bandwidth as most any other
half wave. I've never noticed them to really show any less
bandwidth than other designs. But then again, I'm not sure
what you mean by not broad banded. That could vary depending
on expectations.