[Antennas] VSWR on Log Periodic.

Wed, 24 Apr 2002 21:25:33 -0400

Measuring at the transmitter gives a good indication of how 'friendly' the
transmission system (everything after the rig) is to the transmitter or amp.

Measuring at the antenna (power AND vswr) is the real indication of how
friendly everything else is to the antenna.

How about a remote control meter at the antenna feed.  Of course this
remotely operated device would have to have almost no effects itself on the
system when not 'reading'.  Then you can measure at BOTH ends.

This would seem ideal.  Is this thinking 'in band' or 'out of it' ?

73
Frank

<<---  END OF MESSAGE --->>
----- Original Message -----
From: "George, W5YR" <[email protected]>
To: <[email protected]>
Cc: "Dave Shrader" <[email protected]>; "antennas"
<[email protected]>
Sent: Wednesday, April 24, 2002 8:37 PM
Subject: Re: [Antennas] VSWR on Log Periodic.

> Measurements made in the shack are readily interpretable and convertible
to
> readings at the antenna. And probably much more accurately than they could
> be made at the antenna since the presence of the operator and
> instrumentation tends to alter the operating environment.
>
> A couple of short- and open-circuit line measurements and either a real
> Smith Chart or its computer complement and all shack readings can then be
> translated to the antenna feedpoint.
>
> 73/72/oo, George W5YR - the Yellow Rose of Texas
> Fairview, TX 30 mi NE of Dallas in Collin county EM13qe
> Amateur Radio W5YR, in the 56th year and it just keeps getting better!
> QRP-L 1373 NETXQRP 6 SOC 262 COG 8 FPQRP 404 TEN-X 11771 I-LINK 11735
> Icom IC-756PRO #02121  Kachina 505 DSP  #91900556  Icom IC-765 #02437
>
>
> Don Havlicek wrote:
> >
> > In my opinion, the ONLY meaningful SWR measurements are AT THE ANTENNA..
> > NOT at the shack!
> > Don - N8DE
> - - -
>
> Your moderator for this list is:
> Larry Wilson KE1HZ [email protected]
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