[TowerTalk] Heliax question

[Jim W7RY]

Nice try Rob....

LDF 4.5 was a real thing.  It was larger than LDF 4, and smaller than 
LDF 5. Thus the number LDF 4.5

Had a new jail that was installed with thousands of feet of this stuff 
in the form of Radiax.

https://www.talleycom.com/product/ANDLDF4.5-50

LDF4-75 is a real thing too.

http://www.wiscointl.com/andrew/cables/ldf/ldf4-75.htm

7RY


On 10/5/2024 12:41 PM, Rob Atkinson wrote:
> I think W9AC is on to somethng WRT the Z of the line.  75 ohm, like
> LDF4-75.  BTW Andrew AFAIK made LDF4-50 and LDF5-50 but I never heard
> of this LDF4.5 stuff.  Is that just some ham's invention?
>
> Connectors:  If you are only using the line for 40 m. and lower you
> don't really need connectors if you are terminating the line in WX
> proof enclosures, such as an indoor antenna tuner on one end and a box
> at the base of a monopole at the other end.  You can just expose the
> outer and inner conductors and strap or solder usable copper leads
> like strap or bare AWG14 copper wire to the cable and go from there or
> effect some other convenient hardware transition.  The Z bump on the
> low bands isn't enough to worry about.   You really only need to worry
> about connectors at VHF.
>
> 73
> Rob
> K5UJ
>
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-- 
Thanks and 73, Jim W7RY