To anyone,
What is the impedance of the two 75 ohm cables in parallel? Is it close to 450
ohms so that you just hook it up directly to the end of a long run of 450 ohm
open wire feeder?????
Thanks, Mike, N7ML.
Tom Hammond wrote:
> K2AV wrote:
>
> >From: Jerry Morris - W5MS-W5KUF-Corpus Christi Amateur Radio Club To: James
> >Subject: Re: [TowerTalk] Bringing Ladder Line into the house ??
> >
> >>connect 2 -75 ohm cables together side by side......connect shield
> >>together at both ends.....
> >>use center conductor for each side of ladder line.....do not ground
> >>shield......been using this system on all 6 antennas......w5kuf
>
> >Curious as to why you don't ground the shields. Grounding the shields was
> >the only way I could get rid of some florescent lamp noise. It changed the
> >tuner settings just a smidge.
>
> In this month's (May) issue of QST, on page 53, they show using coax
> for parallel conductor line and they show the shields tied together
> at both ends but only the TX END of the shields grounded to TX or
> tuner ground.
>
> 73 - Tom Hammond N0SS
>
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