[BC] RG-8

Gregory Muir gmuir at cherrycreekradio.com
Fri Apr 4 13:00:46 CDT 2008


----- Original Message ----- 
From: "Mike McCarthy" <Towers at mre.com>
To: "Broadcasters' Mailing List" <broadcast at radiolists.net>
Sent: Friday, April 04, 2008 7:39 AM
Subject: Re: [BC] RG-8


> What Times doesn't say is LMR series cables introduce IM between the braid 
> and foil.  Thus artificially raising the noise floor.  In very sensitive 
> applications, the raising of the floor 3-6 dB could be unacceptable.
>
> Andrew makes a LDF-1, a 1/4" cable for last foot applications.
>
> MM
>
> At 11:07 PM 4/3/2008 -0600, Gregory Muir wrote
>>Choice of cabling is often found out to be inadequate after the job has 
>>been completed.  It tales careful consideration before you start to choose 
>>the cable for your application.  If you look closely at cellular sites you 
>>will often find 214 in use within the building.  Then it is Heliax up the 
>>tower. The same applies to trunking sites.  But there I have even seen RG8 
>>in use.
>>
>>LMR400 is effectively solid.  It's a foil tape covered with a tinned 
>>copper braid.  Times touts shielding effectiveness 50 dB greater than 
>>single layer braid.  In the past I have had 100% success of its use at

<snip> 





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