[TowerTalk] Feedlines: inside or out on tower?

Jeff DePolo jd0 at broadsci.com
Sun Aug 19 08:59:19 PDT 2012


If the cable shields are properly bonded to the tower at the top and bottom
of the vertical run as they should be, if for no other reason than lightning
protection, then it doesn't matter whether they are inside or outside the
tower.  

				--- Jeff WN3A

> -----Original Message-----
> From: towertalk-bounces at contesting.com 
> [mailto:towertalk-bounces at contesting.com] On Behalf Of Larry
> Sent: Sunday, August 19, 2012 11:39 AM
> To: towertalk at contesting.com
> Subject: Re: [TowerTalk] Feedlines: inside or out on tower?
> 
> I believe it is ON4UN's book where there was discussion of inside vs 
> outside. If you wanted to shunt feed the tower then inside 
> was preferable as 
> I recall. Apparently minimizes RF on the feedlines.
> 
> 73, Larry  W6NWS
> 
> -----Original Message----- 
> From: Jim Hoge
> Sent: Sunday, August 19, 2012 11:10 AM
> To: towertalk
> Subject: [TowerTalk] Feedlines: inside or out on tower?
> 
> After reading John's (KK9A, P40A) post regarding tower 
> painting, I have a 
> question for the group. While I would be hard pressed to 
> recall a tower I 
> have worked on that has not had its feedlines and control 
> cables run on the 
> inside of leg, it is obvious from his post that not everyone 
> does so. What 
> is the thinking behind running the cables on the inside or 
> the outside? BTW, 
> I've even seen hardline run on the inside of 45 and 55, glad 
> it wasn't me 
> who had to install it.
> 
> 73,
> Jim W5QM
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