[600MRG] Fwd: Re: 630 with a 68ft vertical?

[Edward R Cole]

>Date: Wed, 30 Sep 2020 10:25:33 -0800
>To: Jim Miller <jim at jtmiller.com>
>From: Edward R Cole <kl7uw at acsalaska.net>
>Subject: Re: [600MRG] 630 with a 68ft vertical?
>
>I put up a 43-foot inverted-L with 122-foot top wire.  Only four 
>radials at 100-foot or less.  I built a coil 10-inch in diameter 
>with 1.4-inch winding spacing about 11-inches long using No. 12 
>solid copper wire (stripped std house wire).  Antenna tuned using 
>about 2/3 of the windings.  Without top hat you would need more 
>inductance in a loading coil.
>
>I made it using white plastic food cutting boards.
><http://www.kl7uw.com/630m.htm>http://www.kl7uw.com/630m.htm
>
>73, Ed - KL7UW
>
>At 07:41 AM 9/30/2020, Jim Miller wrote:
>>What sort of efficiency could I expect with just base loading a 
>>68ft vertical on 630m? I have 32 radials with an average length of 100ft.
>>
>>For a long list of reasons I can't top load this antenna at all, 
>>nor do I have any other antenna possibilities.
>>
>>I can put effort into making the loading coil as efficient as possible.
>>
>>Thanks!
>>
>>jim ab3cv
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>
>73, Ed - KL7UW
>   http://www.kl7uw.com
>Dubus-NA Business mail:
>   dubususa at gmail.com

73, Ed - KL7UW
   http://www.kl7uw.com
Dubus-NA Business mail:
   dubususa at gmail.com 
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