Well, it seems to be. I would have used 450 Ohm line but had bought
50 meters of the other already. The next doublet I make will use the
450 Ohm line.
At 12:21 AM 4/05/2013, you wrote:
>450 ohm line is mechanically stronger, and will handle high power. On 40,
>you are tuning half wave elements, which will have an extremely high
>impedance. I have the same problem with my 3/4 wave length elements.
>Hopefully your external tuner can handle the problem.