Thanks Alek,
I will do the math tonight and see if the LC are resonant for the
frequency. The LC readings are very close for 2 different 50 ohm
terminators and an antenna that is close to resonant. The frequency was
7.24 MHz.
Is the Z reaking accurate?
Dan
Alek Petkovic wrote:
> G'day Dan,
>
> The RF-1 does not actually read display impedance. It will show SWR only.
>
> It can also be used to measure unknown inductance and capacitance. It
> does these things extremely well.
>
> Using the RF-1 on the inductance or capacitance ranges whilst
> measuring an antenna will give you meaningless results as you have
> found out. It is not intended to be used in that way.
>
> If you want to display R + jX, you will need a different machine. I
> think Autek also does one of these.
>
> 73,Alek
> VK6APK
>
> At 05:16 AM 27/02/2005, Dan Sawyer wrote:
>
>> All,
>>
>> I have become interested in leaning more about what is actually going on
>> at the antenna. I have a vertical and would like to measure it.
>>
>> First I have an Autek RF-1. It measures swr, Z, L, and C at a preset f.
>> I am not certain what the L and C are reading. When I measure a 50 Ohm
>> terminator at 7.2 MHz it actually reads a Z of 50 and an SWR of 1.0.
>> However the L and C readings are of 2 uH and 2500 pf. What are these
>> actually measuring? The values are very close to those from the antenna.
>>
>> How can I actually measure the L and or C component of the antenna? If I
>> use an impedance bridge at the frequency will it measure L (or C)?
>>
>> I hope this is close enough to topic.
>>
>> Dan
>>
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>
>
> http://www.qrz.com/vk6apk
> http://profiles.yahoo.com/vk6apk
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