[Boatanchors] Feedline Spreaders

[K0DAN]

More wire = better

73
k0dan

----- Original Message ----- 
From: "david knepper" <collinsradio at adelphia.net>
To: "Sandy W5TVW" <ebjr at i-55.com>; "Jim Brannigan" <jbrannig at optonline.net>; 
<boatanchors at mailman.qth.net>; <amradio at mailman.qth.net>
Sent: Thursday, February 15, 2007 8:53 AM
Subject: Re: [Boatanchors] Feedline Spreaders


> Sandy, I am going to use 6 inch spacers that are made of ceramic.  I have 
> some E.F. Johnson round spacers that will be part of the system.
>
> I would think that I will use a lot of spacers if I space them 1 foot 
> apart.
>
> I guess it is a matter of keeping the two wires from touching.
>
> Would you recommend a double extended Zepp or just a Zepp, 134 feet?  I 
> thought of going 265 feet with the feeders attached in the middle of the 
> antenna with an insulator of course.
>
> Somehow, I seem to be going backwards instead of forward in time.  We are 
> going to "construct" an old time shack from the 30's and need an authentic 
> antenna configuration with a Collins antenna tuner.
>
> Thanks
>
> Dave, W3ST
> Publisher of the Collins Journal
> Secretary to the Collins Radio Association
> www.collinsra.com - the CRA Website
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> ----- Original Message ----- 
> From: "Sandy W5TVW" <ebjr at i-55.com>
> To: "Jim Brannigan" <jbrannig at optonline.net>; "david knepper" 
> <collinsradio at adelphia.net>; <boatanchors at mailman.qth.net>; 
> <amradio at mailman.qth.net>
> Sent: Thursday, February 15, 2007 9:45 AM
> Subject: Re: [Boatanchors] Feedline Spreaders
>
>
>> The spacing isn't very critical at all.  Anything from 2-6" spacing and 
>> wire from #16-#12.  Single conductor black plastic insulated wire works 
>> just fine.  #14 guage OK.  If you make the insulators so they are spaced 
>> about 4" and place a spacer every foot.  The spacers can be wood that's 
>> been soaked in hot beeswax for a while.  Don't try regular paraffin 
>> sealing wax as it will melt in the sun.  Beeswax will not.  Spacers can 
>> be made from any DARK plastic (plexiglas, lexan, etc.)  Avoid clear 
>> plastic as the sun will ruin it after a year or so.  Years ago guys were 
>> using plastic "Toni" haircurlers, but the sun played hob with them after 
>> a while.  Impedance? Anything from around 250-600 ohms OK.  I no longer 
>> use home brewed open wire as the "window" twin lead is too readily 
>> available (common 450 ohm stuff) and will handle a KW. all OK.
>>
>> 73,
>> Sandy W5TVW
>> ----- Original Message ----- 
>> From: "Jim Brannigan" <jbrannig at optonline.net>
>> To: "david knepper" <collinsradio at adelphia.net>; 
>> <boatanchors at mailman.qth.net>; <amradio at mailman.qth.net>
>> Sent: Thursday, February 15, 2007 8:23 AM
>> Subject: Re: [Boatanchors] Feedline Spreaders
>>
>>
>>>
>>> What impedance are you looking for?
>>>
>>> The "Handbook" has formulas.
>>>
>>> Jim
>>>
>>>> What is a "good" spacing between 6 inche spreaders, using #14 wire, let 
>>>> us say.
>>>>
>>>> Thank you
>>>>
>>>> Dave, W3ST
>>>
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>>
>>
>
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