[TowerTalk] cleaning aluminum beam elements

[Andre Van Wyk]

So this is why the 10m beam I cleaned now resonates so great on 40m........
;-) 

-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com] On Behalf Of Roger (K8RI)
Sent: Saturday, February 16, 2008 1:09 PM
To: TexasRF at aol.com
Cc: towertalk at contesting.com; N7KA at comcast.net
Subject: Re: [TowerTalk] cleaning aluminum beam elements

TexasRF at aol.com wrote:
> I am quite concerned about all the aluminum cleaning chat recently. It is

> well known that any of these abrasive cleaners and pads will leave  
> micro-scratches in the aluminum surface. Due to the skin effect at our
high  frequencies, 
> the rf flow will encounter a maze of conduction channels that not  only
will 
> increase the electrical length of the element, can reverse the  electron
flow, 
> creating pattern nulls in some directions.
>  
> The only approved method of restoring beam antenna appearance and  
> performance is replacement of the aluminum tubing. 
>   

Preferably in  a much larger antenna.
>  
> You can find a complete selection of NEW virgin aluminum tubing at great  
> prices at _www.texastowers.com_ (http://www.texastowers.com)  under the
heading 
> "aluminum". With these low prices and availability, there is no reason  to

> even think about any other restoration method. Who wants to be caught
scrubbing 
> aluminum when you could be hamming it up instead?!
>  
> Please let me know what you need!
>  
> 73,
> Gerald Williamson K5GW
> Owner/General Manager, 
> Texas Towers
>  
>  
What da ya wanna bet some one takes you serious Gerald? <:-))

73

Roger (K8RI)
_______________________________________________



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