[Antennas] Use of Baluns on Inverted V HF antennas to convert

[KA8VIT]

  Hi Dave,

I would (and have myself) use some "balanced" coax.

Two pieces of coax run together.

Connect the ladder line(s) to the center conductors of the coax at one 
end...
and to the tuner (balance feed) at the other.

Connect the shields of the coax together at the antenna end...  and also 
connect
the shields together at the tuner end and ground them as well and use the
balanced feed connections of your tuner (probably a 4:1 balun).

Your tuner will handle the "impedance bump" without any problems.

Just keep the balance coax run as short as possible.

See photos below.

73

Bill KA8VIT

Dave, K2DP wrote:
> Am considering using a balun to convert the 450 ohm ladder line feed on my 160-30 mtr inverted V antenna to coax to just get the feed line into the shack. It appears that both DX-Engineering and Array Solutions make products specifically for this purpose, allowing you to use a short length of coax from the balun to the "in shack" antenna tuner. In other words, I would mount this balun on the outside of the house at the point where the ladder line enters the shack, then use RG-213 or equivalent coax to run from the balun to the tuner at the station (15 feet or less).
>
> Here's the question:  DX-Engineering recommends using a 1:1 Balun, PN DXE-BAL050-H10-AT.  On the other hand, Array Solutions recommends their 4:1 balun, AS-200-T. 
>
> Has anyone used either of these baluns in this application and what success have you had with them ?
>
> Thanks and 73,
> Dave, K2DP, St. Louis
>
>   
-- 

Bill Chaikin, KA8VIT
USS COD Amateur Radio Club - W8COD
WW2 Submarine USS COD SS-224 (NECO)

ka8vit at ka8vit.com
http://ka8vit.com
http://www.usscod.org

QRP-L#: 2596
FP#:    1043
SKCC#:  2593