[TowerTalk] 10 throu 20 beam traps or no traps

[Herbert Schoenbohm]

Three bands no traps and great performance the three element Cubex Quad 
wins hands down especially for price and wind load.  Plus with proper 
matching 75 ohm stubs on 10 and 15 I get both CW and SSB coverage below 
1.5 to 1 over the range. Why not many serious DX-ers and contesters 
consider Tri-band or even Five-band quads is a mystery to me.

Herb Schoenbohm, KV4FZ



On 6/20/2014 12:30 AM, Jim Brown wrote:
> On 6/19/2014 7:44 PM, Edwin Karl wrote:
>> I would recommend Opitbeam over the others in a heart beat, no matter 
>> the size. A
>> real class act. 
>
> I've not seen these antennas, but the designs look first rate.
>
> From the looks of it, the 9-5 is two elements per band, equivalent to 
> the 2-element SteppIR. The 11-5 appears to be three elements per band, 
> equivalent to the 3-element SteppIR, and the 16-5 looks to be four per 
> band, equivalent to a 4-el SteppIR.
>
> I'm very happy with my 3-el SteppIR, and use it all the way up to 6M. 
> Two really good features -- the straight SteppIRs weigh a lot less, so 
> are easier to handle on the tower and don't need as big a rotor. 
> Second, the reversing and bi-directional features are worth it's 
> weight in gold. Except on 6M, where it doesn't work that way, I rarely 
> turn the antenna more than about 100 degrees.
>
> Here in CA, South America and Asia are approximately opposite of each 
> other, and the higher bands are often open to both at the same time. 
> Reverse takes something like 3-5 seconds. Likewise, EU and the east 
> coast of the US are opposite to VK/ZL. Very useful in a contest.
>
> 73, Jim K9YC
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