Sorry,
I did not remember seeing anything on how to build your own ladder line.
If he had just said check out the ARRL books it would give me a
direction.
Googling it, I found that you can make your own, but it is not clear
what the impedance is, because it depends on the wire gage and spacing.
Kip
On Thu, 2009-04-23 at 06:54 -0700, Jim Brown wrote:
> The classic literature is full of practical instructions to build ladder
> line. ARRL Handbook, ARRL Antenna Book, RSGB books, etc.
>
> I have made spacers by cutting 1/2-inch PVC electrical conduit into short
> pieces, then drilling holes for the conductors to pass through. There are
> many other ways to do it. The equations for impedance vs wire size and
> spacing are in those books. I just toured a coast radiotelegraph station
> (KPH), built in the 20s by RCA, where transmission lines were constructed
> of wires under tension between support poles that were perhaps 20 ft
> apart.
>
> Email lists should be an exchange of ideas, not a substitute for studying
> the basic references and textbooks! Jan gave you a good idea. You should
> thank him, not berate him.
>
> 73,
>
> Jim Brown K9YC
>
> On Thu, 23 Apr 2009 08:25:09 -0500, Kipton Moravec wrote:
>
> >Why offer this when you did not provide any links or instructions on how
> >to make ladder line?
>
> >Kip
>
> >On Thu, 2009-04-23 at 15:03 +0200, Jan Erik Holm wrote:
> >> Why buy all the time? It is easy to make by yourself.
> >>
>
>
>
> _______________________________________________
>
>
>
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--
Kipton Moravec AE5IB .- . ..... .. -...
==============================================
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