[Elecraft] Re: [Icom] Opinions re: HF Verticals?

Larry East [email protected]
Tue Oct 15 13:34:00 2002


At 02:21 AM 10/15/02 -0500, sjolin wrote:
>  Changing the length of coax used
>to feed an antenna will change the swr at the rig. I've seen cases where the
>swr will change just by adding an extra couple feet of cable in the shack.

That is incorrect -- if your "SWR Meter" is indeed measuring SWR. The 
complex impedance seen by the rig (or tuner) will change depending on the 
length of coax, but not the "true" SWR. For an insight into this, read 
Chapters 7, 8 and 9 in "Reflections II" by M. Walter Maxwell, W2DU. A most 
illuminating book that should be read by every "technically oriented" ham...

73,
Larry W1HUE/7

PS - PLEASE lets DON'T start a big thread on SWR, complex impedances, etc.!