guys:
I think he is asking for the formula to determine the resonant frequency of 
an RLC, LC, RC or RL circuit.
He said nothing about antennas in the original post.
In fact he clearly mentioned micro and pieko units.
there was some great posts about this a couple months ago and the easiest 
most effective formulas were given.
I don't think I kept any, but I'll check and forward what I've got.

73
Colin, V A6BKX
----- Original Message ----- 
From: "PATRICK GORMLEY" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, May 24, 2012 8:35 AM
Subject: Re: calculating resonant frequencies for the Extra exam


>I made a mistake.  The driven element for a quad/delta loop is
> 1030/frequency.
> ----- Original Message ----- 
> From: "PATRICK GORMLEY" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Thursday, May 24, 2012 8:54 AM
> Subject: Re: calculating resonant frequencies for the Extra exam
>
>
>> micro is hundredths pico is thousands.  If it's resonant frequency for an
>> antenna that is not a dipole it's 492/frequency.  If it's a delta loop or
>> quad, the number is 1038/frequency.  Just divide the whole number into 
>> the
>> two or three positions and it will come out right every time.  I don't
>> have
>> a scientiffic calculator but Dick Bash did that very thing back in the
>> seventies and that's why he was so popular.  It certainly made my life
>> easier.  73- pat kk3f
>> ----- Original Message ----- 
>> From: "Shawn Pearson" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Thursday, May 24, 2012 8:21 AM
>> Subject: calculating resonant frequencies for the Extra exam
>>
>>
>>> Howdy:
>>>
>>> Is there a method to calculate a resonant frequency without having to  =
>>> go through  the unit conversion process(micro, pico), and still end up =
>>> with the correct answer in MHz?  I don't have a "scientific" calculator,
>>> =
>>> so would like to avoid unit conversion if possible.  The question that =
>>> i'm struggling with involves both micro, and pico units, and I would =
>>> very much appreciate it if someone on the List was aware of a math =
>>> "shortcut" that would simplify answering these questions as much as =
>>> possible.
>>>
>>> Much thanks,
>>>
>>>
>>>
>>> David S. Pearson-wa4dsp
>>>
>>
>