[TowerTalk] TDR

[Jim Brown]

On 9/4/2012 1:04 PM, Roger D Johnson wrote:
> I'm used to the old Tek pulse type TDRs. What would be the effect on 
> the trace of a swept frequency TDR
> with FFT when the line is terminated with an antenna with several 
> resonant points,

I don't have a good answer to that.  I do know that both my Ten Tec TAPR 
VNA and the DG8SAQ VNA can provide a good TDR that sees a lot of detail 
on the line with an antenna attached, and I think the AIM units can 
too.  I've also seen what I think are reflections from antenna elements 
and from the earth, but might be "wraparound" in the FFT.

73, Jim K9YC