On 9/20/2010 8:57 AM, Jo, YC0LOW wrote:
> But, the site is located almost 500 meters from my shack. And, I can only
> elevate the
> feedline (Belden RG6-U) because the housing developer restricts me to
> bury the coax.
> I have no experience in elevating feedline such long for RX antenna
> (only had it for few meters when it's crossing the road).
> Need your advices/suggestions to make it alright. I may be the first
> to use this array in YC-land and hopefully will be able to receiving
> better on topband, soon. TIA es 73 de Jo, YC0LOW.
> _______________________________________________
>
> Jo, Try to use cable TV spec RG6 which has a solid steel messenger cable as
> part of the assembly. Some call this figure 8 cable and it is used for all
> weather house drops from pole to house. Some carry a floding compound that
> stops the ingress of moisture. 1500 feet on RG6 on 160 meters should not be
> more than 1 db or so...but having a good working antenna that can hear is
> everything. You might take care however and not running the cable in close
> parralel proximity to AC drops and even long CATV runs as a precaution to a
> Farraday effect that could perhaps induce noise into your antenna. This,
> however is easy to check and test, and you can make some small ferrite
> isolators ala W8JI to break up common mode issues. Hope to work you this
> season.
73, Herb Schoenbohm, KV4FZ
_______________________________________________
UR RST IS ... ... ..9 QSB QSB - hw? BK
|