[TowerTalk] Need Quality RG6 cable

[Artek Manuals]

Dave

will 75 ohm work for you rather than 72?

Dave
NR1DX

On 3/11/2021 8:57 AM, Dave Sublette wrote:
> Good morning,
>
> Each dipole of my 80 meter four square dipole array is fed with 72 ohm
> coax.  Yes, they are full length dipoles suspended vertially around a 150
> foot tower.  One end of each dipole is at the top.  The centers are pulled
> out until the feed points are 46.5 feet from the center.  The other half of
> the dipoles is allowed to droop and loop down with the ends tied 15 feet
> above ground to allow mowing, etc... It ends up as a rough diamond shape.
> And, yes it works.  It has worked well for over 20 years. The control box
> is the original Comtek that does work with dipoles.  The new version manual
> claims it doesn't.  Perhaps they have altered it by now.
>
> I gave a crude description to start because I figured there would be
> questions.  The point of this email, though, is to get your
> recommendation for good quality 72 ohm coax with foam dielectric for a V/F
> of 78% or so.  It has to be foam in order that the feedline be long enough
> to reach the center of the array where the control box is located. The
> connectors on the box are SO-239.  The PL259 can be soldered or crimped, I
> don't care. But if soldered, shielding must be copper.
>
> So 72 ohms, 78% v/f, good quality.  Where to get it?
>
> Googling yields all sorts of cable suppliers, but we all know the quality
> varies.  I would hope one or more of you has some real world experience to
> share.
>
> Thanks & 73,
>
> Dave, K4TO
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-- 
Dave Manuals at ArtekManuals.com www.ArtekManuals.com


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