[Antennas] "Stealth color for masts", reprise

[icra at galaxynet.com]

> HOWEVER, something I didn't really think about until I was assembling the 
> antenna head, which is also contained in a section of PVC pipe.  That is, 
> heat and the active electronics.  The LF antenna in question is an active 
> whip that uses an FET and a Bipolar transistor, biased at a moderately high 
> current level (meaning there is some heat created).  Add to the equation 
> that Central California is a very hot area in the summer, 110 degrees F in 
> the sun not being unusual, a black or dark colored PVC pipe would create a 
> very efficient "Heat pipe" to channel "superheated air" right up into the 
> antenna head at the top of the pipe.  NOT a pretty picture for electronic 
> equip.
> 
You could add vent holes to the top......not perfect, but would allow for air 
movement up through the pipe........

Mel
N7OKL