[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"!
>
> THE BEACONEER'S LAIR: http://www.geocities.com/ko6bb/
> QSL GALLERY: http://photobucket.com/albums/y123/KO6BB/
> Merced, Central California, 37.3N 120.48W CM97sh
>
> ******************************************************
>
> --
> No virus found in this outgoing message.
> Checked by AVG Free Edition.
> Version: 7.1.362 / Virus Database: 267.12.8/166 - Release Date: 11/10/2005
>
> _______________________________________________
> Boatanchors mailing list
> Boatanchors at mailman.qth.net
> http://mailman.qth.net/mailman/listinfo/boatanchors
> ** List Administrator - Duane Fischer, W8DBF/W9WZE **
> ** For Assistance: dfischer at usol.com **
> $$ For vintage radio info, see the HCI web site $$
> http://www.w9wze.org
More information about the Boatanchors
mailing list