[Lowfer] Re: RF Milliammeter Placement

[PAUL DAULTON]

There will be peaks and nulls from the ground to the top of the antenna.
 For reference pick a place and leave it there
Relative readings before and after physical changes are what you are going
 for. 
Does the peak correspond to a dip in the final current? On mine I peak(
 and dip) the coil then adjust the voltage to the final
for one watt input. The two adjustments are slightly interactive so it
 takes a couple of back and forth adjustments.
Paul K5wms
-----Original Message-----
From: Andy - KU4XR <ku4xr at yahoo.com>
Sent: Mon, 29 Sep 2008 18:31:03 -0700 (PDT)
To: "Discussion of the Lowfer (US, European, & UK) and MedFer bands"
 <lowfer at mailman.qth.net> 
Subject: [Lowfer] Re: RF Milliammeter Placement
 
 
OK; after reading some references to reading the current in the  
ground side; I decided to move my FS indicator to the xmtr ground.  
There is NO doubt, the reading is definitely different. It is more  
stable, and I had to retune for a peak reading. The tuning is  
smoother too. I am also not seeing the meter fluctuations that I  
did when I had it coupled to the ant. itself. And the Biggie !!  
as many were saying to me, the meter has proven it, The current in  
the ground leg is lower than what the ant. was showing.  
 
My question: CAN I TRUST THIS READING ?? Will it be more accurate  
than coupling to the ant. ??  
My coupling method is just a few wraps of wire around the ant.,  
But now the ground, with the ends tied together, and a single wire  
coming to the meter.  
It's more than probable that I was affecting the tuning of the ant.  
by coupling to it, and that wire was RF HOT too !! but it's not now.  
Just curious if this will be a more dependable indicator??  
 
Thanks for any replies; 73, Andy " XR "  
 
 
 
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