[SixClub] Re: [50mhz] 6M power divider

[Lance Collister]

Gary - N3JPU wrote:
> Anyone have empirical numbers such as loss on power dividers for use on 6M?
> Specifically a 2 port device, 
> Stripline Power Dividers verse Transformer coupled such as the Array
> Solutions StackMatch/mini-StackMatch?
>
> Looking for the most efficient method to feed a pair a pair of yagis.
>
> In the past I have used 75 ohm phasing harnesses (not so good, pretty lossy)
> and then an Array Solutions StackMatch II, I have not tried a Stripline
> splitter yet and am interested if they are workable for 6M verse other
> methods.
>
> Gary Mitchelson
> N3JPU Montgomery Co. MD  FM19
> USAF MARS and SHARES: AFA1PU/AFF1MD/AFF1M 
> http://www.mitchelson.org/ 
>
> Moderator: Ray Brown, KB0STN
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>   
Hello Gary,

I suggest you look at using two 1/4 wavelength pieces of 75 ohm LMR600.  
That will enable you to have a very low loss power divider capable of 
handling plenty of power. If you want to be extra safe about it, you can 
always use a T connector in the middle using a 7/16 DIN connector, and 
also get DIN connectors for the center end of each 1/4 wavelength section. 

You can trim the coax pieces to the proper length by using something 
like an MFJ Antenna Analyzer.  A quarter wave line section at 50.150 
will also be a half wavelength at 100.300 MHz.  If you short the far end 
of that line section, it also should look like a short at 100.300 MHz.  
Just keep trimming it off and shorting the end until it comes up to that 
frequency.  That is exactly the method I used to tune my phasing lines 
to a multiple of a half wavelength in my EME array.

GL and VY 73, Lance

-- 
Lance Collister, W7GJ (ex: WN3GPL, WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8)
P.O. Box 73
Frenchtown, MT  59834  USA
QTH: DN27UB
TEL: (406) 626-5728   
URL: http://www.bigskyspaces.com/w7gj
2m DXCC #11, 6m DXCC #815