[amsat-bb] Re: 416TB help
domenico.i8cvs at tin.it
Mon Apr 7 12:20:55 PDT 2008
----- Original Message -----
From: <w0dxz at aol.com>
To: <amsat-bb at amsat.org>
Sent: Monday, April 07, 2008 4:39 PM
Subject: [amsat-bb] 416TB help
> I have an old 416 TB, need wiring help.? It currently has been wired for
use with? the PS-4 switching box,,, instructions say that as wired, it will
be LHC when not energized,,,? RHC only when energized.
> I want the opposite,,, RHC when NOT energized.??? (I am not going to
energize?? --? not going to use? the PS-4)
> How do I wire it to be RHC when NOT energized...
> ?I do not have the original wiring harness for use without the PS-4.
> or should I just go down to HRO and buy a linear? 432 antenna?? I need RHC
or linear, i dont care which.
> Bob W0DXZ DM33? Sun City AZ
Hi Bob, W0DXZ
The following is the instruction manual of the 416 TB in pdf format.
To get RHCP when NOT energized just follow the instruction in Fig-5A
The PS-4 switching box is an optional and you can wire the antenna for only
RHCP or LHCP without it but you need two original balun DB part
Nr 350747 and the original phasing harness PS
If you missed the above parts the manual shows you the lenght to build it
using coax cable with velocity factor 0.66 like the RG-213 or RG-58
Best 73" de
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