[TowerTalk] Best autotuner for Extended Double Zepp

[Pete Smith N4ZR]

Thanks, Rick - I thought the EDZ was by definition usually a multi-band 
antenna - no matter, what I want is to avoid the vagaries of the G5RV 
and operate as many bands as possible, horizontally polarized. just5 
happens that I have ~135 feet between some convenient mounting points. 
LDG makes a 200-watt tuner, but I'll only be running 100 watts (a K3), 
so I thought a little headroom wouldn't hurt.

73, Pete N4ZR
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On 6/20/2016 12:38 PM, Richard (Rick) Karlquist wrote:
> On 6/20/2016 8:32 AM, Pete Smith N4ZR wrote:
>> Looks like the best antenna I can put up in my current situation is an
>> EDZ.  Any thoughts on the best low-power (<200 W) autotuner for this
>> application? I would plan to put the tuner in a weatherproof enclosure
>> outside and run coax to the shack, feeding power to the tuner preferably
>> through the coax.
>>
>
> Are you building a true EDZ, meaning it operates on ONE BAND and is
> exactly 1.25 wavelengths long?  If so, it is easy to put a coil across 
> the input terminals and then tap down on it to get 50 ohms balanced. 
> Then you can use a 1:1 balun and run coax to the shack. WAY CHEAPER 
> than an autotuner + weatherproof box, etc.
>
> None of this applies if you are just driving a random length dipole
> on multiple bands, and it accidentally happens 1.25 wavelengths on one 
> of them.
>
> I recently was researching autotuners for my truck.  It turns out
> that 200 W is a tall order for almost all of them.  You really need
> a so-called kilowatt tuner to be sure of reliable operation at
> 200 watts.  (Doesn't mean you can't get lucky; its a crap shoot).
>
> Rick N6RK
>