[Elecraft] The use of a doublet

[Don Wilhelm]

Tom (and all others who have commented),

Please pass along the length and type of your feedline when making 
statements of the effectiveness and ease of tuning for your antenna.  
With a resonant halfwave dipole fed with coax (or any line matched to 
the antenna impedance), the feedline length is not important, but most 
multiband antennas are not like that and the feedline length is a very 
important parameter.
The feedline is a part of the antenna system, and when not matched to 
the antenna feedpoint impedance, it will act as an impedance transformer.
Your particular antenna and feedline may work just fine, but the same 
antenna with a different feedline length may not work out well.
So for others to duplicate your experiences (or attempt to), please add 
the length and type of feedline.

73,
Don W3FPR

THOMAS BRERETON wrote:
> I have long been an advocate of the center fed doublet.
> I have put them up in numerous state and even in Germany.
> Of course I have used different tuners. Folks here in this
> write about of all kinds of external tuners.
>
> May I make a radical suggestion? Use the internal K3 
> antenna tuner! Now I know that most transceivers have 
> internal tuners that will operate well only up to 3:1 swr.
> The K3 tuner is rated much higher than that. Indeed, 
> I was very surprised how well it  works here in my station
> with my 135' foot dipole with 450 ohm ladder line and a
> balun.
> I highly recommend that one should consider the K3 tuner.
> It's a winner.
>
> Tom Brereton, W0TOM
>   
>