[TowerTalk] Need Quality RG6 cable

[Artek Manuals]

Dave

I am in the process of rebuilding my array of Coax Reversible BOGs and I 
just bought a large quantity of RG-59U from Davis RF .
http://www.davisrf.com/rgcoax.php

The measured velelocity factor was around 79 ( probably really 78 my 
measurement technique was quick and dirty)

The reason I chose RG59 over RG6 was :
1) It is near impossible to find quality female F connectors that wont 
become intermittent
2) It is equally as hard to find crimp on PL259 Males of the right size 
for RG6. (I am switching all my F connections over the PL259)
3) RG6 is NOT Solderable, RG-59 is SOLDERABLE
4) You can find appropriate good quality crimp on or solder connectors 
with the appropriate reducers for RG59 from a number of sources

Dave NR1DX

On 3/11/2021 9:11 AM, Artek Manuals wrote:
> 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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