Yuri Blanarovich wrote:
1. Placement of the loading coil can drastically affect that. (Base loaded vs.
Top Hat loaded)

BTW, Yuri, you and others may not be aware that my junk box top-loaded
mobile antenna equaled the best-of-the-best in one of the antenna
shoot-outs. The loading coil was just some cheap 1.75" dia coil stock
from my junk box. It wasn't anything like a bugcatcher and it cost
virtually nothing.

The bottom section was a 108" conductor curving toward the coil which was
***HORIZONTAL***. Yes, the coil was horizontal as was the top hat to which
it was attached. If I had known it was going to do that well, I could have
won by making the top hat a little bigger. Here is an ASCII diagram of that
antenna:
loading coil
- ////////////--Capacitive top hat
/
/
/
/
| Pickup
|
|
|
|
FP
--------GND------------------------------------------------------
So I discovered by accident what is being discussed now. Seems obvious that
the coil could be shorted and the top hat disconnected for higher frequencies.
--
73, Cecil http://www.qsl.net/w5dxp



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