[Top] [All Lists]

[TowerTalk] Antenna Modeling Programs

To: <>
Subject: [TowerTalk] Antenna Modeling Programs
From: (JC Smith)
Date: 15 Mar 1997 18:45:57 GMT
>> Interesting.  I wonder why it is that there does seem to be a diffeence
>> the wire is being used as the center conductor in coax cable.  Eg: the
>> difference in performance between LMR-400 and LMR-400 ultra flex.  The
>> stranded wire should have more surface area and thus better performance,
>> the opposite is aparently true.  Then when you go from the 7 strand to the
>> strand center conductor (if you can find it) the performance supposedly
>> back to near that of the solid wire.

>19 conductor stranded will have less exposed surface area than 7
>conductor.  Here, count only the out exposed surfrace, not the surface of
>each wire.  Smaller diameter strands means smaller undulations in the
>outer surface in contact with the dielectric; a closer approximation of
>solid wire.

LB, thanks for replying.  This is logical, and easy to see.  What I don't
understand is why this gives lower losses.  I thought you got lower losses by
increasing the surface area.  (Yes, there is more to it than that, but all
else being equal...  ?) - JC

--- Internet Message Header Follows ---
Received: by (/\oo/\ Smail3.1.29.1 #29.6)
        id <>; Sat, 15 Mar 97 17:40 PST
Received: from by bdt via smap
        id sma004308; Sat Mar 15 17:39:04 1997
Received: from localhost by with SMTP (SMI-8.6/2.7c-UTK)
        id BAA24579; Sun, 16 Mar 1997 01:38:55 GMT
To: <>
Date: Sat, 15 Mar 1997 20:38:50 -0500 (EST)
From: "L. B. Cebik" <>
To: JC Smith <>
cc:, QRP-L List <>
Subject: Re: Re: [TowerTalk] Antenna Modeling Programs
In-Reply-To: <>
Message-ID: <>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII

FAQ on WWW:     
Administrative requests:
Sponsored by:             Akorn Access, Inc. & N4VJ / K4AAA

<Prev in Thread] Current Thread [Next in Thread>