Topband: New user, some advice needed.

[MICHAEL ST ANGELO]

Pat,

My Inverted L is longer than a quarter wavelength. I also use it on the HF bands 80-20 and it is easier to match since it is not a multiple of a half wavelength

Mike N2MS


> On December 21, 2016 at 3:43 PM Patrick Armstrong <ft920ir at gmail.com> wrote:
> 
> 
>    I have noticed several times that people talk about being able to put up
> a full .250 wavelength vertical and I have wondered why almost never do
> they think about making it .270 wavelength instead of .250 wavelength. The
> little extra length gives a feed point impedance of 52 ohms with some
> inductive reactance which can be canceled with a series capactor. This
> gives a more efficient feed than a .250 wavelength and using an inductor to
> get a match. I designed my 75/80m vertical this way and with 65 radials (
> odd number 'cause that's all the wire I had) it has allowed me to work 280
> entities with100 watts, all SSB. (Blasphemy I know, I have an ear condition
> which made 13 wpm almost impossible for me).
> 
>    I also use this antenna on 160m by using linear loading and an inductor
> for matching. Linear loading seems to be overlooked in a lot of discussions
> of antennas on this list and I wonder why. Am I missing a downside to these
> matching systems? If so I would like to hear about it.
> 
>    Pat Armstrong  KF5YZ  Heart of Texas
>