Topband: Shunt Fed Tower-Need Parts
Gene Smar
ersmar at verizon.net
Thu Sep 30 20:58:32 PDT 2010
Marc:
Here's a close-up photo of how I grounded the parasitic elements of my
Bencher Skyhawk (similar in design to your C31XR):
http://s83.photobucket.com/albums/j282/ersmar/?action=view¤t=Elementgroundstrap.jpg .
I used a sheet metal screw (also called a self-tapping screw) to fasten a
piece of aluminium flashing to each element. I connected the other end of
the aluminium strap to the boom with a stainless steelhose clamp
http://i01.i.aliimg.com/photo/238428465/Hose_Clamp_v0.jpg and covered the
clamp with electrical tape.
73 de
Gene Smar AD3F
----- Original Message -----
From: "Marc Wullaert ON4MA" <marc.wullaert3 at telenet.be>
To: "Greg - ZL3IX" <zl3ix at inet.net.nz>; "topband topband"
<topband at contesting.com>
Sent: Thursday, September 30, 2010 3:30 PM
Subject: Re: Topband: Shunt Fed Tower-Need Parts
> Hello all,
>
> I wash to busy to rebuild my C31XR insulators. The 20m reflector insulator
> wash burned while transmitting on 160m.
> Greg how did you ground the elements inside a stepper ?
> I'm replacing my tower next year and thinking to ground my reflectors and
> driving elements
> of my c31xr. Anyone did that before ?
>
> if you wanna see some pictures of the flashover see
> http://picasaweb.google.be/ON4MApictures/C31xr_2010Shuntfed160mFire
>
> 73 Marc ON4MA
> ----- Original Message -----
> From: "Greg - ZL3IX" <zl3ix at inet.net.nz>
> To: "topband topband" <topband at contesting.com>
> Sent: Monday, September 27, 2010 7:57 AM
> Subject: Re: Topband: Shunt Fed Tower-Need Parts
>
>
>> Hi Marc,
>>
>> I have been using a SteppIR for top loading for nearly 7 years. There
>> is no problem with doing this.
>>
>> I also took the step of grounding all elements to the boom to mazimise
>> the loading. For some reason the SteppIR elements are floating when the
>> antenna leaves the factory.
>>
>> 73, Greg, ZL3IX
>>
>> On 2010-09-27 07:19, Marc Wullaert ON4MA wrote:
>>> Ed,
>>>
>>> I'm not shure but is it good to have a Steppir as toploading for 160m.
>>> What
>>> about the high voltages
>>> on the steppir motors and controlbox when you shuntfeed the tower ?
>>>
>>> Marc ON4MA
>>>
>>> ----- Original Message -----
>>> From: "Edward Sylvester"<navydude1962 at yahoo.com>
>>> To: "topband topband"<topband at contesting.com>
>>> Sent: Saturday, September 25, 2010 10:13 PM
>>> Subject: Topband: Shunt Fed Tower-Need Parts
>>>
>>>
>>>
>> _______________________________________________
>> UR RST IS ... ... ..9 QSB QSB - hw? BK
>>
>>
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>>
>
>
>
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> _______________________________________________
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