[Antennas] How to build center feed

2003年7月08日 07:52:21 -0700

At 08:39 AM 7/8/2003 -0400, Robert wrote:
>Dear Hart,
>>Couple of points here that don't seem to be well covered by other responses.
>>The GREAT advantage of the store bought device for constructing a ham dipole
>is the fact that the center insulator is usually designed to provide both a
>good electrical connection (solder lugs) and a strain relief (steel eyelets
>or eye bolts). An then there is the excellent idea of a UHF connector built
>into the housing for the coax connection. That means you can buy pre made
>cable with the connector already properly connected to it and be able to
>connect that cable to the center feed with little concern about strength,
>reliability, etc.

Valid point, however, your can purchase a Budwig center insulator that will 
do the job for around 8ドル.00. That along with Home Depot wire will make a 
good dipole for considerably less bucks that purchasing a tailored made unit.
>One thing that I always add to the configuration is a big gob of duct seal
>goop that is sold is small bricks at places like Lowe's or Home Depot. Mash
>a gob of that around the assembled coax connection to make it more
>waterproof, and it will last for years.

I prefer using liquid electrical tape manufactured by Star-brite as it is 
not sticky when cured and doesn't attract dirt and etc as with sticky 
products like coax-seal.
[snip the rest]
73
Danny, K6MHE