Wahoos4Life
Member
So on scannermasters site they have a Double discone antenna and a regular discone antenna
why would a Double be better?
why would a Double be better?
Double Discone Vs Discone
- Thread starter Wahoos4Life
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this was discussed a few months back and it's not really a real discone and not any better. that's to sum it up.
skydmark1
Member
just to play devil's advocate for a moment.....is it any worse? Or are they comparable to one another?
prcguy
Member
The double discone on that site is a poor attempt at a "bicone" or "biconical dipole" which has much less band width than a discone but can have some gain if designed correctally, which its not. I bought one for testing several years ago and its rotting in my backyard somewhere.
prcguy
prcguy
digitalanalog
Active Member
i didn't know aluminum rots
prcguy
Member
No, but it does oxidize. The layer of aluminum oxide that forms on bare aluminum does a pretty good job of protecting the base metal. However, in a salty environment (sea shore or midwestern winters), aluminum will react with the salt to form compounds that are destructive to the base metal.
The hood on my Ford Expedition is aluminum and there's a spot on the leading edge of the hood where the paint has bubbled. I suspect that some road salt got under the paint through a paint chip and now there's a bit of "rot" going on under the paint.
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N_Jay
Guest
i didn't know aluminum rots
Corroding and oxidizing into an unusable state. (Better?)
If a discone is good a double discone must be twice as good, right? Just give me a double chocolate on a sugar cone and I'm happy. Yeah, aluminium doesn't do well in a salt air environment, I have replaced a few antennas that look like they served in a war and lost.
iMONITOR
Silent Key
Double-Discone = twice as much wind resistance to put bending force against your mast.
prcguy
Member
Even the name double discone is wrong, it doesn't even have a single a disc.
prcguy
prcguy
True, actually it's a type of dipole.
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