[TowerTalk] Best Coax (Matching 50 to 75 Ohms)

TexasRF@aol.com TexasRF@aol.com
Sat, 15 Apr 2000 11:45:07 EDT


The N4KG .08 wavelength series transformer is a single frquency design. At 3X 
frequency the resulting impedance is 81.8 +j30.7 ohms and at 5X frequency the 
resulting impedance is 92.5 -j28.5 ohms. Neither of these values is a good 
match for 75 or 50 ohm coax.  The 3X and 5X idea works only with 1/4 
wavelength transformers and actually works very well. I have used 144Mhz 
power dividers at 432Mhz many times with excellent results.

73 de k5gw

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