[TenTec] Eagle problem?

Bob McGraw - K4TAX RMcGraw at Blomand.net
Sun May 18 16:34:19 EDT 2014


This is too far out of balance for good common mode rejection.  I suggest 
one look at the feed line locations, make sure it has "twists" between 
supports to miminmize near field disruptions.  Also make sure the antenna is 
of equal length on each side.  Here we presume a center fed wire and not an 
off center fed wire.

73
Bob, K4TAX


----- Original Message ----- 
From: "Carter" <k8vt at ameritech.net>
To: <tentec at contesting.com>
Sent: Saturday, May 17, 2014 4:57 PM
Subject: Re: [TenTec] Eagle problem?


> On 5/15/2014 10:06 PM, Bob McGraw - K4TAX wrote:
>> My 256 ft center fed wire shows  a 1.0 amp current in one leg and a
> > 1.1 amp current in the other leg.  One leg goes through the top of a
> > tree while the other is over grass.  Depending on season, leaves or
> > no leaves there is a noticed difference in balance/unbalance but no
> > so as to cause a problem. These measurements were done with a single
> > Weston RF Ammeter, 0 - 2A F.S., with internal thermocouple. Measure
> > one leg and note the current and then measure the other leg. Pretty
> > easy  What were the currents you measured?  .
>
> Using a Palomar Engineers clamp-on RF ammeter, I measured 0.9 A in one leg 
> and 1.3 A in the other on 20 meters.
>
> 73,
> Carter   K8VT
>
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