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
>>
>