[Antennas] How to build center feed
Ronald KA4INM Youvan
[email protected]
2003年7月08日 07:02:38 +0000
Dipole antennas will match 75 Ohm cable when all common frequency
verse lengths formula and charts are used. (RG6/RG-59/RG-11)
On HF antennas the gap between the inner ends of the elements is
not critical, most reasonable plastic plumbing pieces commonly used
to make the center insulator do no harm, a 12 or more inch length
of plastic pipe might be pressing your luck. (this would be creating
a inadvertent delta match) (but would make great end insulators)
(pull apart strength and "cold flow" are considerations with PVC tubing)
> I want to build a center feed for a dipole antenna. It should be able to
> connect a 50 ohm coax cable to it. How close should the wires on the
> center feed be? Or is it better to buy one?
--
73 (= Best Regards) de: Ron [email protected]
100% Slack. since July, 1997 (still free!) SENT D&T are UTC
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