And why does one need a transformer for ground isolation?. All of the
inputs and outputs, computer and radio, are unbalanced to ground. Perhaps
it is due to the systems having two different grounds, thus grounds of
different potentials. That being the case then one doesn't have a real
zero potential ground. That is the real problem. The addition of a
transformer is simply a poor bandage covering a wound that will never heal.
Look at your power distribution and wiring. Specifically the neutral and
3rd pin ground. Also, if you use a separate "station ground" is it bonded
back to the AC mains ground? It should be, otherwise problems will abound.
73
Bob, K4TAX
----- Original Message -----
From: "Barry N1EU" <barry.n1eu@gmail.com>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Saturday, December 22, 2007 12:20 PM
Subject: Re: [TenTec] Fw: question Digital matching-- rig to sound card
On Dec 22, 2007 6:55 AM, Jim Brown K9YC <k9yc@audiosystemsgroup.com>
wrote:
Virtually ANY computer sound card can drive any rig without the need for
a
transformer.
The xfmr isn't for impedance matching, it's for ground isolation.
73,
Barry N1EU
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