[TowerTalk] Protecting Aluminum Antennas

[David Gilbert]

I'm not advocating anodizing antenna elements, only disputing that it 
makes any difference electrically,  Anybody not capable of abrading the 
anodizing at the joints shouldn't be putting up antennas anyway.

Dave   AB7E


On 3/19/2016 12:37 AM, J Chaloupka via TowerTalk wrote:
> Anodize is an insulating surface coating.  Take it from there on what that means to joing the elements of an array electrically.JIM W4QBQ
>
>        From: David Gilbert <xdavid at cis-broadband.com>
>   To: Jim Miller <jtmiller47 at gmail.com>; Larry Loen <lwloen at gmail.com>
> Cc: TowerTalk <towertalk at contesting.com>
>   Sent: Saturday, March 19, 2016 1:06 AM
>   Subject: Re: [TowerTalk] Protecting Aluminum Antennas
>     
>
> That's not true at all.  Anodizing merely adds a dye to a very thin
> surface oxide.    Aluminum oxide is going to grow naturally anyway, and
> is essentially an insulator.  Skin effect doesn't apply to a surface
> insulator.
>
> Dave  AB7E
>
>
>
> On 3/18/2016 8:07 PM, Jim Miller wrote:
>> Electrical resistance
>>
>> On Mar 18, 2016, at 10:47 PM, Larry Loen <lwloen at gmail.com> wrote:
>>
>> Yes, I have often wondered why annodized aluminum couldn't be used.  I
>> assume there is a reason.  But it would sure help make antennas less
>> conspiculous.
>>
>>
>> WO7R
>>
>> On Fri, Mar 18, 2016 at 5:03 PM, David Gilbert <xdavid at cis-broadband.com>
>> wrote:
>>
>>> Why on earth would you want it to be shiny?  Seems like it would be more
>>> of any eyesore to any neighbors that way.  It certainly doesn't make any
>>> difference electrically.
>>>
>>> Dave  AB7E
>>>
>>>
>>>> On 3/18/2016 4:06 PM, Roger (K8RI) on TT wrote:
>>>>
>>>> Is there anything that will keep an antenna shiny and bright, besides not
>>>> putting it up?
>>>> I have often heard clear Krylon mentioned, but from my experience, it is
>>>> very short lived.  Three coats, allowed to dry between coats only lasted a
>>>> few months if that.
>>>> Around here (central MI) the shiny Al turns to a dull finish in a month
>>>> or two.
>>>>
>>>> Alodyne does last and looks good, if you like a shiny gold color and have
>>>> both time and ambition.  I have used Alodyne on aircraft elevator hinges.
>>>> It's a very labor intensive (tedious) process. The antenna would certainly
>>>> stand out.
>>>>
>>>>
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