[TowerTalk] Coax/Rotor Cable on the outside orinside of thetower

Gene Fuller w2lu at rochester.rr.com
Thu Mar 29 19:47:40 PDT 2012


Why make it so complicated? Why not just use hose clamps either on the 
barrel or on the connectors to clamp the "joint" to the tower leg, using 
lots of Penetrox on the mating surfaces and being sure to do a good job of 
sealing the connectors?
Gene / W2LU

----- Original Message ----- 
From: "Larry Banks" <larryb.w1dyj at verizon.net>
To: <towertalk at contesting.com>
Sent: Thursday, March 29, 2012 9:58 PM
Subject: Re: [TowerTalk] Coax/Rotor Cable on the outside orinside of 
thetower


> Is there some kind of stainless steel shoulder washer?  This would solve 
> the
> coax  barrel <=> copper ground lug problem.
>
> 73 -- Larry -- W1DYJ
>
>
>
>
> ----- Original Message ----- 
> From: "Jim W7RY" <jimw7ry at gmail.com>
> To: "Ron W8RJL" <youngron at verizon.net>; "John Hudson"
> <jd_hudson at comcast.net>; <towertalk at contesting.com>
> Sent: Thursday, March 29, 2012 9:51 PM
> Subject: Re: [TowerTalk] Coax/Rotor Cable on the outside or inside of
> thetower
>
>
>> Stainless is not the fix all for galvanic reactions/issues. The barrel
>> itself would still be in contact with the aluminum.
>>
>> 73
>> Jim W7RY
>>
>>
>> --------------------------------------------------
>> From: "Ron W8RJL" <youngron at verizon.net>
>> Sent: Thursday, March 29, 2012 6:46 PM
>> To: "Jim W7RY" <jimw7ry at gmail.com>; "John Hudson" 
>> <jd_hudson at comcast.net>;
>> <towertalk at contesting.com>
>> Subject: Re: [TowerTalk] Coax/Rotor Cable on the outside or inside
>> ofthetower> Why not use two stainless washers between the coax feed thru
>> nuts and the
>> lug. That should solve the dissimilar metal problem you mention.
>>> 73 Ron W8RJL
>>>
>>> ----- Original Message ----- 
>>> From: "Jim W7RY" <jimw7ry at gmail.com>
>>> To: "John Hudson" <jd_hudson at comcast.net>; <towertalk at contesting.com>
>>> Sent: Thursday, March 29, 2012 9:32 PM
>>> Subject: Re: [TowerTalk] Coax/Rotor Cable on the outside or inside of
>>> thetower
>>>
>>>
>>>> Too much dissimilar metal. Good idea though.
>>>> Thanks for sharing.
>>>> 73
>>>> Jim W7RY
>>>>
>>>>
>>>> --------------------------------------------------
>>>> From: "John Hudson" <jd_hudson at comcast.net>
>>>> Sent: Thursday, March 29, 2012 4:56 PM
>>>> To: <towertalk at contesting.com>
>>>> Subject: Re: [TowerTalk] Coax/Rotor Cable on the outside or inside of
>>>> thetower
>>>>
>>>>> This may not be what you would want to use but a simple way to ground
>>>>> your
>>>>> coax shield is to use a large ground lug out of a panel box. One of 
>>>>> our
>>>>> club
>>>>> members uses this
>>>>> http://www.w4nja.org/HomeBrew/W4KU-Coax-Ground-20091206.htm
>>>>>
>>>>> Simple, neat and did I say simple!
>>>>>
>>>>> John
>>>>> KO4XJ
>>>>>
>>>>>
>>>>> -----Original Message-----
>>>>> From: towertalk-bounces at contesting.com
>>>>> [mailto:towertalk-bounces at contesting.com] On Behalf Of K8RI
>>>>> Sent: Thursday, March 29, 2012 6:25 PM
>>>>> To: towertalk at contesting.com
>>>>> Subject: Re: [TowerTalk] Coax/Rotor Cable on the outside or inside of
>>>>> the
>>>>> tower
>>>>>
>>>>> On 3/29/2012 7:00 PM, Gene Smar wrote:
>>>>>> Richard:
>>>>>>
>>>>>>       To help ground your coax cable runs onto the tower at the top
>>>>>> and
>>>>>> bottom, as Jim suggests, you can fab up some homebrew cable ground
>>>>>> clamps.
>>>>>> I wrote up a description at
>>>>>> http://lists.contesting.com/archives//html/Towertalk/2002-07/msg00698.html
>>>>> .
>>>>>> Joe KC2TN took photos of his
>>>>>> http://lists.contesting.com/archives//html/Towertalk/2007-10/msg00356.html
>>>>> .
>>>>>>
>>>>> I just use a bulkhead connector, top and botton.
>>>>>
>>>>> There may be a tiny bit more loss, but it's simple.
>>>>>
>>>>> 73
>>>>>
>>>>> Roger (K8RI)
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>>
>>>>>
>>>>>
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>>>>> TowerTalk at contesting.com
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>>>>>
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>>>>>
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>>>>
>>>> _______________________________________________
>>>>
>>>>
>>>>
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