[Boatanchors] Cobraheads?

James M. Walker chejmw at acsu.buffalo.edu
Fri Nov 11 21:12:03 EST 2005


If the selling price is too high, consider this.
find a dealer of teflon or lexan sheets, and get some of the 1/2 inch
thick stuff in 6 inch square pieces. Then mark off the shape for the
cobra portion, also mark for 6-32 screws around the outside edge. drill
the hole for the support line in the top center, then drill in the
bottom
of it a hole for the coax to fit snugly in the eyebolt holes come out
the opposing sides and are secured with 1/4 inch hardware. Works good
if done carefully. I used the sealant stuff for rubber products on one
half before closing it up. It is harder to describe than to do.

You can also make a similar item using PVC and RTV as the filler.
Jim
WB2FCN


Philip Atchley wrote:
> 
> Hi all,
> 
> This was also sent to the antenna list.
> 
> When I was in the Air Force ('62-'82) we often used what we called a
> "Cobrahead" to make HF dipole antennas.  They were nice in that they
> provided a center hanger support for the dipole as well as gripping the
> RG-8 Coax and made a weather tight connection seal.
> 
> Later this month I'd like to try to get one or two.  Is there a good
> source for these in the "civilian world", and if so, what is a typical
> price?  I suspect that the price is probably "out of this world"
> though.  Kind of like the toilet seats that NASA buys 8^(
> 
> ******************************************************
> 73 de Phil,  KO6BB
> If it's over 1dB above the Noise Floor, "IT AIN'T DX"!
> 
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