[Test-Equipment] Information needed RF meter

Mike Manes mrmanes at gmail.com
Wed Oct 21 18:11:59 EDT 2009


The impedance of a "small pilot light" is likely to be much higher than
the radiation resistance of a short vertical, so it's likely to turn nearly
all your 100 mW into light rather than radio waves.  A field strength meter -
basically a crystal set with a meter rather than earphones, with a sensing
antenna near the feedpoint, may be your simplest solution.

J ALLEN CALL wrote:
> Hi Robert:  Thanks for the information.  I have tried all of those things you suggested.
> 
> The setup that I am trying to make work has the transmitter and receiver next to each other.  
Maybe I will just use a small pilot light in series with the antenna lead and 
tune for
maximum brightness.  I was trying to demonstrate to a group of Scouts the 1941 
message
from FDR and hearing it on a receiver that was used in that time period. So 
everything
would be one a small table.  I could separate the transmitter in my home which 
would be
1/3 of a mile away but that would take away from the display.  Maybe I will 
use a scope
also so they can see the waveform when he speaks.  Anyway
> 
> thanks for your input.
> 
>  
> 
> J
> 
> W7KSG
> 
>  
> 
> 
> 
>  
>  		 	   		  
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-- 
Mike Manes    mrmanes at gmail.com     Tel: 303-979-4899
"Things should be made as simple as possible, but not more so."
A. Einstein


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