Andy:
why the diamond antenna?

I am pretty sure that one needs radials.  Other verticals don't such as
the Kushcraft.

Also the bandwidth on the low bands is pretty small - 10-15 kilohertz.

Have you also considered the detuning effect from the proximity of the
house?

They are tuned as quarter waves, but the those such as the R8 are half
waves which means that the integral radial are R F hot at the ends so
need to be out of reach - this range don't do the low bands however.

So that is my potted knowledge of commercial verticals from a R 8 user!

David



In message <[log in to unmask]>, andy m0ceg <andy-
[log in to unmask]> writes
>Hello Gary Ok this could take  two emails to do this,  Here is a description 
>of the garden it is 35FT long  and 17.6 FT wide,  so you can see not much 
>chance of a good size antenna.  however try and picture this,  starting from 
>the bottom of the garden left hand side starts the wire going across the 
>garden to the right hand side,  now from here it goes diagonally  to the 
>back wall of the house where it will terminate,  the SGC is at the bottom of 
>the garden where the wire starts,  the total length is seventy feet.  I am 
>however going to get a vertical   antenna made by Diamond the CP 6.
>----- Original Message ----- 
>From: "Gary Lee" <[log in to unmask]>
>To: <[log in to unmask]>
>Sent: Thursday, June 01, 2006 12:44 AM
>Subject: autotuners
>
>
>> For Andy.
>>
>> Andy, I don't know what random length of wire you are trying to tune, and
>> for what frequency, but I have had extremely good luck with the atu in my
>> elecraft k2, as well as the ldg z-100, and the atu in the kenwood ts2000.
>> I have a 90 foot wire configured as a half sloper, tying the shield of the
>> coax to a 32 foot steel tower which is then grounded to an 8 foot ground 
>> rod.
>>
>> Tunes well on all bands except 30 meters.  For that, I use a manual tuner
>> behind the autotuner to give it just a little help.
>>
>> I have also used a 44 foot doublet fed with 300 ohm twinlead and a 4-1
>> balun with good results.
>>
>> Please give a little more info about your antenna and requirements.
>> It seems strange that you can't find an atu for your needs.
>>
>> 73 and I'll try to help.
>>
>>
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>>
>

-- 
David W Wood