[Elecraft] KX3 remote transmitting

[Ian White]

>
>My previous message on this topic was composed while I was in a
doctor's
>office waiting on my fiancee.  To gather some data on coax, I did some
>Google searching and found several "calculators" (that all seem to copy
each
>other).  Another thing they have in common is that they all use the
data I
>derived for "window line" which was published in an ARRL Antenna
>Compendium article I wrote.  All without attribution, of course :-).
>

This is the line loss calculator that you can take to the bank (or even
the doctor's office) because VK1OD always does his own thinking and he
gets it right: 

http://vk1od.net/calc/tl/tllc.php

As expected, a site search shows several references to N7WS :-)


73 from Ian GM3SEK


>-----Original Message-----
>From: elecraft-bounces at mailman.qth.net [mailto:elecraft-
>bounces at mailman.qth.net] On Behalf Of Wes Stewart
>Sent: 17 April 2013 05:02
>To: elecraft at mailman.qth.net; Ron D'Eau Claire
>Subject: Re: [Elecraft] KX3 remote transmitting
>
>My previous message on this topic was composed while I was in a
doctor's
>office waiting on my fiancee.  To gather some data on coax, I did some
>Google searching and found several "calculators" (that all seem to copy
each
>other).  Another thing they have in common is that they all use the
data I
>derived for "window line" which was published in an ARRL Antenna
>Compendium article I wrote.  All without attribution, of course :-).
>
>--- On Tue, 4/16/13, Ron D'Eau Claire <ron at cobi.biz> wrote:
>
>From: Ron D'Eau Claire <ron at cobi.biz>
>Subject: Re: [Elecraft] KX3 remote transmitting
>To: elecraft at mailman.qth.net
>Date: Tuesday, April 16, 2013, 9:11 PM
>
>That's how the commercial HF stations did it. Keep in mind they used
real
>ladder line and NOT "window line" that is frequently mislabeled "ladder
>line".
>
>True ladder line has large diameter conductors (usually No. 12 or
larger
>wires) and only enough insulator bars separating them to keep the wires
>stable. That's compared to the window line that has a brown
(polyethylene I
>believe) web between two much smaller wires with openings (windows) cut
>into the webbing.
>
>Window line works reasonably well, but does not have the stability and
low
>losses of true ladder line, especially for long runs. One of its
biggest
>drawbacks is that moisture, ice, snow, etc., can change its
characteristics
>appreciably in spite of the windows. Ladder line does not suffer such
>changes unless it's buried in snow or iced over.
>
>73 Ron AC7AC
>
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