[TowerTalk] DELTA LOOP

Stein Roar Brobakken s-roabr at online.no
Thu Sep 25 11:11:45 EDT 2008


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
> 
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