Topband: Elementary Inverted L questions

[N4ZR]

Jim, ignorant question - at X=0, isn't the resistive component also the 
impedance?

73, Pete N4ZR
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On 3/25/2021 3:08 PM, Jim Brown wrote:
> On 3/25/2021 11:39 AM, N4ZR wrote:
>> The feedpoint choke is wound on a #43 core (I think), which may make 
>> it a bit more credible. 
>
> Very wrong core for HF and 6M. #31 is the only good choice.
>
>  The measured minimum SWR is 2.2 at 1925 KHz, and resonance (X
>> crossing zero) is at 1983 KHz.  All measurements made at the base of 
>> the antenna
>>
>> Now here's the part I *really* don't understand - at X=0, the R 
>> measures 119 ohms. 
>
> The value at X=0 doesn't make sense to me either. Lower SWR at 1925 does.
>
> I suggest that you do an impedance to display the impedance, not SWR. 
> If your analyzer can't do it, borrow one that can.
>
> 73, Jim K9YC
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