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Old August 6th 03, 07:30 PM
Tim Conway
 
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On Wed, 06 Aug 2003 08:14:22 -0500, Richard Harrison wrote:
the Belden cable. This is 1.414 X the rms volts. No need to speculate.
Coax tables abound. One is found in the ARRL Antenna Book.


Good point - If I can get a dos or windows system up and running, I'll
model it with that magloop4.exe program. Regardless, I'd intended to pull
the center conductor back a half inch or so after stripping the cable to
the insulator. I actually intend to use rg-58 - smaller, lighter, and can
set the outer conductor closer to the center, for (I hope) higher
capacitance. I'm now considering mounting the sides of the cap to the
hula hoop with the hoop actually split there, so the hoop is stretched and
compressed as the capacitance is changed, to avoid tight flexure of
conductors or sliding contacts.

My biggest concern is dialectric puncture. I'll be running a maximum of
5W.

tim
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Old August 6th 03, 11:34 PM
 
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Tim- at 5 watts, doubt that you could even puncture RG-174 (that the coax
about the thickness of 1/8 inch), that is used for test , and multiplex drop
cables! Jim NN7K




"Tim sent:
My biggest concern is dialectric puncture. I'll be running a maximum of
5W.

tim




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Old August 7th 03, 07:45 AM
OK1SIP
 
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"Tim Conway" wrote in message sethatanddropthis.com...
Good point - If I can get a dos or windows system up and running, I'll
model it with that magloop4.exe program.


Hi Tim,
Reg's programs run well in a DOS window of a Win2k system. Any system
from 386 to Pentium III should work for you.

BR from Ivan
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Old August 7th 03, 01:46 PM
Tim Conway
 
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On Wed, 06 Aug 2003 23:45:27 -0700, OK1SIP wrote:

Reg's programs run well in a DOS window of a Win2k system. Any system
from 386 to Pentium III should work for you.


Thanks, Ivan. I'm sure they do. I just don't have a working
microsoft-based system at the moment. I'm trying to get WINE up and
running, but my role as "Mr. Mom" keeps me from any long projects. It
took me two weeks to build a simple two-coil mobile HF antenna, just
because I can work on it for only a few minutes at a stretch.

One of these days, I'm going to have to move beyond just talking about it
and try to build one of these suckers.

73,

tcc
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