[TowerTalk] Auto tuners, Baluns and open wire feeders
jimlux at earthlink.net
Tue Jul 17 18:24:40 EDT 2018
On 7/17/18 2:56 PM, Wes Stewart wrote:
> Think about that for a minute. The tuner weighs something and requires
> DC power, Do you want to suspend a few pounds of weight + wind load +
> coax + power cable + balun(s) at the center of a horizontal wire?
In my installation, I happened to have a support at the middle, and you
can run power up the coax for most tuners. But yes, it's a consideration
if you're supporting only at the ends.
Probably not a good solution for that 1km long span across the fjord
behind your shack.
> Wes N7WS
> On 7/17/2018 2:34 PM, Kim Elmore wrote:
>> I’ll display my benighted state by asking a question: why not place an
>> auto-tuner at the feed point of the doublet? That way, the feed line
>> is flat and the doublet can be any length, assuming impedance say
>> desired frequencies are in tang of the tuner. Then, add common mode
>> chokes at the auto-tuner input and anywhere else desired. Won’t that
>> do the job?
>> Kim N5OP
> TowerTalk mailing list
> TowerTalk at contesting.com
More information about the TowerTalk