[Elecraft] A Good Antenna Length?

[Dave]

I tried a 40M OCFD for a while. I gave up on it and went back to a centre 
fed dipole instead.

Even on 40M it didn't seem very good and I was plagued with RF getting into 
PCs and them shutting down or periferals stopping working.  Plus, despite 
the hype, it didn't really seem to work well on other bands.  The Antenna 
analyser was very dismissive, showing resonances outside of the Amateur 
bands and, on some that it was supposed to work on, no sign of any resonance 
at all.

Dave (G0DJA)

----- Original Message ----- 
From: "Jim Brown" <jim at audiosystemsgroup.com>
To: <elecraft at mailman.qth.net>
Sent: Saturday, July 05, 2014 2:24 PM
Subject: Re: [Elecraft] A Good Antenna Length?


> On 7/5/2014 2:05 AM, David Cutter wrote:
>> You might consider an off-centre-fed dipole with appropriate balun and 
>> choke.
>
> Not if you're going to run power. An off center fed antenna generates high 
> common mode voltage, which will fry even the best choke when running 
> power. I wouldn't consider such an antenna at greater than 100W.
>
> 73, Jim K9YC
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