[TowerTalk] Type 31 baluns

[jimlux]

Jim Brown wrote:
> On Tue, 01 Jun 2010 21:55:56 -0700, jimlux wrote:
> 

>> Jim,
> 
>> Speaking of widebands.. what about recommendations for chokes to use 
>> with an autotuner at the feedpoint/base. That *is* a broadband 
>> application. 
> 
> That's an application where I think the bifilar THHN chokes would 
> really shine, both because of their wide bandwidth, and because the 
> tuner takes care of any mismatch that the THHN introduces. 

A choke on the antenna side of the tuner? I hadn't thought about that. 
For the SGC type tuners the wire to the antenna is separated from the 
wire to the "ground" (you really don't want parallel C on the output of 
the tuner)
> 
>> And, probably, choke it at both ends.
> 
> That may depend on the installation. There's no downside to a second 
> choke at the other end. 
> 

Money?