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Re: [Amps] Amps Digest, Vol 178, Issue 22

To: Amplifiers <Amps@contesting.com>
Subject: Re: [Amps] Amps Digest, Vol 178, Issue 22
From: Richard Solomon <dickw1ksz@gmail.com>
Date: Sat, 7 Oct 2017 16:04:07 -0700
List-post: <mailto:amps@contesting.com>
Looking in QRZ.com, I find VE7TIT
lives in Enderby, BC.

73, Dick, W1KSZ

On Sat, Oct 7, 2017 at 3:56 PM, Steve Wright <stevewrightnz@gmail.com>
wrote:

> On 08/10/17 05:45, jerome schatten wrote:
> > [...]perhaps I can arrange for a transfer of VE7ASS to you/your wife
> > upon my demise. You might be interested in some of my other calls too:
> > VE7POO and VE7SPY. POO and ASS are kind of a matched set so take both
> > if you can. Of course you don’t seem to disclose your call, so I don’t
> > know where you are <g>.
>
> Hah!  I'm in ZL but unlikely that the liberal do-gooders here will allow
> such a thing.  I already asked my wife, and she was emphatically and
> rudely against the idea.  You don't have TIT as well do you?
>
> Yes the slot in an interesting one.  It's a rectangle 1/2y long and 1/6y
> wide, shunt fed with coax from one end with no balun or match of any
> kind.  As such, a 30m slot is a small antenna.  The width of the slot
> has a lot to do with it's feed impedance.  It's a lot of work to get
> this antenna 1:1 - but you must, because out band with a tuner it loses
> all it's shine.
>
> The basic design is this;
> http://www.hamuniverse.com/hentennarev.GIF
>
> You can lay it flat (four corners same height above the ground) or you
> can stand it upright.  Our experiments show the laid-flat design goes
> very well indeed on 160/80/40, where we're applying the 'what goes up
> must come down' principle.  The upright versions (large!) were a lot of
> work to support, and there was only a S-point in it.  There may be merit
> in the upright version if you were targetting a specific corner of the
> compass.
>
> Adding parasitic elements works very well - set ground as reflector,
> and/or add directors.
>
> The bare driven element, simulated, shows ~10dBi gain.  You'll have fun
> with that.
>
>
> Steve  ZL1BHD
>
>
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