[TowerTalk] RE2 : DELTA LOOP

[Stein Roar Brobakken]

Hi Ronnie 

I forgot to mention that if you gonna have vertical Delta loop.
The Centre must be at top leg and shield to lower as in a normal vertical

good luck !

73s Rag LA6FJA 

> From: Stein Roar Brobakken [s-roabr at online.no]
> Sent: 2008-09-25 17:11:47 CEST
> To: ZS4RY [zr4rv at xsinet.co.za], towertalk at contesting.com
> Subject: RE: [TowerTalk] DELTA LOOP
> 
> Hi Ronnie
> 
> yes you can replace it with 2:1 balun
> 
> but a Delta loop can also be made with 2 different looks
> 
> 1. 0,33 lamba per side in the Delta ( a delta with 3 similar sides)
> 2. Delta with 2 like legs, have this formula with direct fed 50 ohm. Needs no Balun or 75 ohm.
> coax centre in >> 0,25 lamba + 0,3 lambda + 0,4 lambda + 0,05 lambda >>coax shield 
> 
> 
> 73s Rag LA6FJA 
> 
> > From: ZS4RY [zr4rv at xsinet.co.za]
> > Sent: 2008-09-25 16:46:22 CEST
> > To: towertalk at contesting.com
> > Subject: [TowerTalk] DELTA LOOP
> > 
> > One stupid question:
> > 
> > When building a delta loop one need a 1/4 wave piece of 75 ohm coax to match the antenna to the 50 Ohm feed. Can the 75 ohm be replaced with a 2:1 balun?
> > 
> > Ronnie
> > ZS4RY
> > 
> > _______________________________________________
> > 
> > 
> > 
> > _______________________________________________
> > TowerTalk mailing list
> > TowerTalk at contesting.com
> > http://lists.contesting.com/mailman/listinfo/towertalk
> >