Re: VHF radio mic problems

"Richard Crowley" <rcrowley@[EMAIL PROTECTED]
> wrote in 
news:13uvrfq7pa6jpe8@[EMAIL PROTECTED]
> "Tim Perry" wrote ...
>> By placing a right angle BNC adaptor on the lower right 
>> antenna you will be able to orient the antenna to vertical
>> without touching the antenna above it.
> 
> Yes, anything that gets the antenna rods away from other
> metal objects is desirable.
> 
>> A non-conductive sleeve such as heat shrink tubing or even 
>> large soda straws will help prevent inadvertent grounding.
> 
> But note that positioning the antenna rod(s) close enough to
> be at risk of shorting is likely not doing your signal 
reception
> much good even if it doesn't short. Anything metalic that is
> close to the antennas interferes (for better or for worse) with
> the reception. Murphy's Law tells that close-by metalic objects
> will make reception worse rather than better.

Well, not Murphy's law so much as physics.

Tim's missing a major drawback when he suggests putting the 
antennas to vertical: that brings them too close to the rack. 
Tilting them out is designed to get the antennas clear of the 
case, and that matters more than the orientation of the receiving 
antennas as relating to that of the transmitting antennas.  

Remember, the orientation of the transmitting antennas IS NOT 
CONSTANT.



-- 
}:-)       Christopher Jahn
{:-(       http://soflatheatre.blogspot.com/

Sha-ZAM sirrah!