What balun or unun for these vertical antennas?

[Moleculo]

I saw this portable vertical antenna on ebay and am thinking about building one for myself:

PROWHIP PORTABLE HF ANTENNA, 160M - 6M , hieght 10M | eBay

I believe with these antennas they're using an UNUN, to get it to load up 160-6m right? Does anyone directions on how to build it properly?

 

[KC9Q]

Here's a web site that shows the winding method.

http://www.angelfire.com/electronic2/qrp/unun.html

However for high power use 14 bifilar windings of #14 insulated wire on a FT240-K core. If you need to; connect any ground radials to the SO-239 shield side.

That should do it.

 

[hookedon6]

I "think" these are made by G7TAS
www.prowhipantennas.co.uk/
and use his 400 wattbalun

 

[W5LZ]

For multiband use, those baluns/ununs better be adjustable...
- 'Doc

 

[WD4FCJ]

vertical antenna

I saw this portable vertical antenna on ebay and am thinking about building one for myself:

PROWHIP PORTABLE HF ANTENNA, 160M - 6M , hieght 10M | eBay

I believe with these antennas they're using an UNUN, to get it to load up 160-6m right? Does anyone directions on how to build it properly?

looks like the one i built. only mine is 10 thru 40 meters. a fiberglass telescopic shaft with a 23 ft wire inside and a 4:1 balun. matching radials. some say radials are not not nec. but i am getting very good results with radials.. check out this link for a 4:1 balun. easy to make..about $10.00 us dollars
RogerTango.com - Build a 4:1 voltage BALUN