[TowerTalk] RG-8X vs RG-8 - LMR-400 ect

David Gilbert xdavid at cis-broadband.com
Sat Jul 5 20:09:25 EDT 2008


According to TLW, 100 feet of RG-8x to an SWR of 1.5:1 at the antenna 
will give you about 1.7 db of loss on the 15 meter band, and RG-8 or 
LMR-400 will have about 0.7 db of loss.  One db is just barely 
noticeable for signals right at the noise level, but a person has to 
work pretty hard to hear the difference (either at your end or the far end).

TLW says that 100 feet of good quality RG-6 has about 1.8 db loss, by 
the way.  If you're not running high power it's probably the cheapest 
way to go.  I think previous TowerTalk posts have even mentioned using 
high power for modest runs of  RG-6 on 80m and 160m.

Dave   AB7E




> AD5VJ Bob wrote:
>   
>> Has anyone compared in real life RG-8x to the larger diameter coaxes for use on HF only.
>>
>> I know it cant compare above 30 mhz.
>>
>> I am thinking about a 100' run frm the shack to the antenna using RG8x
>>
>>   
>>     
>
>   


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