TenTec
[Top] [All Lists]

Re: [TenTec] OT SWR VS Power Loss

To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Subject: Re: [TenTec] OT SWR VS Power Loss
From: "Alfred Lorona" <w6wqc@dslextreme.com>
Reply-to: Alfred Lorona <w6wqc@dslextreme.com>, Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Mon, 7 Jul 2008 23:13:38 -0700
List-post: <mailto:tentec@contesting.com>

The text is fine -- you missed an important part of the sentence -- "in the
time of one RF cycle."

No,  I didn't miss that. read my post again.

With reference to another post, I wish to add that antenna Q has nothing to do with the current in the wire. The current is computed from ohm's law that states I= sq rt of P/R. Thus a halfwave long dipole with an impedance of 50 ohms and 100 watts fed to it has a current of 1.414 amps regardless of the Q. The curent can not be greater than that otherwise we would be radiating more power than is fed to it. Q only affects bandwidth. Incidentally, the current can be increased by making the wire shorter. The impedance will be lower, and, with the same 100 watts fed to it the current will be greater than 1.414 amps. Will this make the short antenna a better antenna because it has more current? No.

73, AL


<Prev in Thread] Current Thread [Next in Thread>