[Elecraft] 75 ohm coax

Don Wilhelm donwilh at embarqmail.com
Wed Apr 1 21:37:05 EDT 2020


The voltage allowable on 75 ohm 1/2 inch hardline far exceeds the 
voltage allowable for RG-213.  No problem at the limit of 1500 watts for 
the ham bands.

Even RG-6 will withstand 1500 watts with no problems.

73,
Don W3FPR

On 4/1/2020 4:38 PM, Gmail wrote:
> Careful, 75 ohms  was picked for cable TV receiving Coax because it was lower loss then 50 ohms but it could not handle high power as 50 ohms could.  50 ohms is a power, loss compromise. 35 ohms For high power high loss,  50 ohms compromise, 75 ohms low loss low power.
> Ray
> W8LYJ
> 


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