On 16 Nov 2005 13:15:57 -0800, wrote:

Where can I buy this stuff?

http://cgi.ebay.com/Indoor-Dipole-CB...QQcmdZViewItem


Use 100% shielded coax like Belden 9913 or equiv, to minimize TVI


Or if you want to build it yourself:


Or calculate here using 27.200 MHz as a center frequency

http://www.scanshack.com/antcal.htm#dipole

or

http://home.att.net/~wizardoz/cbmw/antenna_fabri.html


Coax Cable Vertical CB Antennas


For a quickie CB antenna, a vertical dipole (1/2) wave can be made right from
the coax itself You take your coax and very carefully, without nicking the
braided shield, strip 102 inches of the outer insulation jacket off one end.
After removing the outer jacket, start bunching the shield down the coax from
the end. Now, where the outer jacket and the shield meet, separate the braided
shield enough to get the inner conductor out through the hole in the braid. Pull
all of the inner conductor through and stretch it and the braid out. Be careful
not to skin any of the insulation off the inner conductor. Now attach an antenna
insulator to the end of the inner conductor. Measure the braided shield. Cut it
off at about 106" and attach an antenna insulator to the end. The total length
of the inner and outer conductor should be about 17 feet (1/2 wave). You can
haul it up to any height you want with a string or rope attached to the
insulator on the center conductor. It's a good idea to coat the end of the coax
cable where it separates with some kind of waterproof sealer. This keeps water
from seeping into the coax, which could cause a high SWR.


Just attach a coax connector on the end of the coax going to your transceiver
and you are on the air. The SWR should be 1.5 or better, if cut to the proper
length. It'll get out about as good as a ¼ wave ground plane CB radio antenna if
you get it up high and in the clear. Do not hoist this antenna up next to a
metal pole, because the metal will interfere with the antenna's operation and
cause a high SWR.



Vinnie S.