[TowerTalk] Testing Antennas

K7GCO@aol.com K7GCO@aol.com
Tue, 28 Nov 2000 03:28:47 EST


In a message dated 11/27/00 4:14:10 PM Pacific Standard Time, 
kekodiez@racsa.co.cr writes:

<< 
 > On Mon, 27 Nov 2000 20:06:24 -0000, Tim Makins,  EI8IC wrote:
 > 
 > >Hi to all.  I would be very interested in hearing people's comments about
 > >these MFJ Antenna Analysers, as I have been considering the purchase of 
one.
 > -------------------------------------------------------------
 > The '259 analyzer is one of my favorite tools for antenna work.  You
 > won't be sorry you got one.
 > 
 > 73, Bill W7TI
 >  >>

I agree.  To make the MFJ more versitile, add 2 velcrow straps at the top and 
bottom to secure it to the boom or mast.  It leaves your hands free.  I add a 
sheet of rubber on the back to keep it from slipping.  

I have also replaced the 50 ohm resistor in the Wheatstone bridge with a 75 
ohm resistor for 75 ohm cables.  75 ohm cable is still widely used so why not 
a analyzer for it?   I have 75 ohm applications.  I installed short terminal 
posts for the resistors for easy exchange.  It is a job to do this however.  
Another problem is the gaps between the copper circuit board are very close 
and solder bridges occur real easy.  
I'd like to see a MFJ 50/75 ohm model and have recommened this to Martin F 
Jue.  k7gco 

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