[Alexandria Radio Club Reflector] UHF Copper Catus JPoles

[Ian]

 <jczap718 at verizon.net> wrote:

> If anyone wants a UHF J Pole Antenna, I'm giving away 5 units.
>
> From experience, these antennas will withstand sustained winds of 90mph and
> will withstand at least 10 years of salt air exposure
> if contacts are coated with General Cement Q Dope
>
> Description:
>
>    - Copper Cactus (1/2" Copper Tubing)
>    - All antennas have an SO239 Connector
>    - Base is terminated with a 3/4" FPT  for mounting on a Pipe Flange
>    - Windload: 2.3lbs based on 55mph windspeed at 33ft AGL and load
>    calculated for 150ft AGL
>    - Antennas were tuned using VNA Analyzer for 442-450MHZ Max SWR is
>    =/<1.33 SWR at band ends and =/<1.2:1 at 445MHZ
>    - All antennas have screw adjust for 1/4 wave element
>    - Most are collapsible to 13-14"
>
> These are great attic mount antennas, clamped to Porch/Deck rail, fence,
> inside of the non-metallic windowsill or a Desktop using a Pipe Flange.
> They were originally made up for use by a Disaster Team.
>
> I will supply a copy of the VNA SWR Curve taken at the antenna.
>
> If anyone wants one and willing to pick it up in Arlington (near Pentagon
> Row) contact me KE2HO at ARRL.NET
>
> John KE2HO
>