[TowerTalk] Hardline ?

[Jim Brown]

On Thu, 07 May 2009 22:02:58 -0400, Roger (K8RI) wrote:

> The worst case ADDITIONAL loss in the line for this degree of 
>> mismatch is 0.18dB, no matter how long the line is. This is shown in the graph 
>> for that degree of mismatch, which is asymtotic to 0.18 dB. 
>>   

>Although correct I think the statement is a bit misleading.

I don't think it's misleading at all. The equations and graphs in the Handbook 
show quite clearly that the worst case loss that you can blame on a 1.5:1 VSWR is 
0.18 dB. Period. You will have so many dB/100 ft for the "matched loss", plus 
some additional loss that can never be more than 0.18dB.  What that means is 
quite simple -- it is crazy to go overboard about modest VSWR!   

73,

Jim Brown K9YC