RadioBanter - View Single Post - base loading vertical with roller inductor?

Jimmie D · August 2nd 06, 05:11 PM posted to rec.radio.amateur.antenna

"Bill Turner" wrote in message
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ORIGINAL MESSAGE:

On 28 Jul 2006 08:30:43 -0700, wrote:

Is there any
reason why this wouldnt' work? Has anybody else modified or built an
antenna using such a system?

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I've done it myself and been quite happy. I used a low RPM reversible
DC motor to tune it remotely from the shack. Works great.

The only suggestion I would make is to not tune it with any
significant power to it or you could damage the coil by arcing as the
roller moves along. Up to ten or twenty watts should be ok. Keep the
roller clean.

Bill, W6WRT

Hi Bill, can you tell m something about your setup with the roller inductor.
I tried it and was not very happy with it. I guess I could have tried a
slower motor and it seemed like it require cleaning a couple of times a
month. I still have the old stuff around and may try it again if I thought I
could get it to work better.