[BC] Part 15 LPAM Questions?

[Robert Meuser]

Willie


You are on the right track. Here is where the rub comes in. If you build 
a one off compliant unit that has some of the 'unusual' features you 
suggest, it will be judged differently than a manufactured FCC approved 
box. This is, of course, all in the eye of the local inspector. Now, if 
you manufactured that same unit, you would likely be judged differently.

Taking a composite of your ideas, you might want stack those drums, weld 
them together, put them on top of a coil form of the same diameter, use 
the strap for the loading coil and wrap and silver solder the drums with 
copper strap so it has a single solid copper surface :-)

R

WFIFeng at aol.com wrote:

>Fascinating! Ok, what about the "cage" idea? Suppose you used 8 copper pipes, 
>attached to "T" and 45 degree elbow fittings, making a ring approximately 2' 
>diameter, top & bottom. The total height of the "cage" being 9.84', to comply 
>with the P15 Rules. The question is whether or not the FCC would consider such 
>a device legal, and if so, how much improvement it would give over a whip, or 
>a single 1/2" pipe antenna.
>
>What about using 1/2" copper strap for the loading coil? Wound in a spiral 
>for compactness, I would suspect that it's losses would not be too high.
>
>Although I don't have the $1,000 for a Rangemaster, I am considering the 
>feasability of making a P15-compliant antenna and attaching it to the wellhead in 
>my yard. (That should be a *really* good ground: solid steel pipe, many dozens 
>of feet straight down to the water table.) If, someday, those funds ever do 
>become available, it would be interesting to see if it's even worth the hassle. 
>If it could cover ~1/2 mile with a useful signal, it just might be.
>
>Willie...
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