[Lf] It's L at the top

[Andre' Kesteloot]

Mike Dennison wrote:

> On Sunday I increased the inductance at the top of my mast. I
> replaced 3mH of Litz wire with 7mH of ordinary wire. This made the
> antenna almost self-resonant. In fact, I needed a 6800pF capacitor
> (very heavy duty oil-filled, from the Puckeridge Decca site) in series
> with my 0.5mH variometer to tune it.
>
> As expected, the current dropped - from 2.7A to 2.2A - as the point
> of maximum current went higher up the mast.
>
> There have been no measurements yet, but initial results seem
> good. I received the best ever reports from GW (599), GM (589)
> and SM (579), and worked DJ9IE (559) who had never replied to
> my calls before.
>
> An all-night transmission using 30s dots on 135.9235kHz did not
> seem to cause any trouble, so all seems stable.
>
> Mike, G3XDV (IO91VT)
> http://www.lf.thersgb.net