[SEDXC] Need Parts To Build A Remote Switch for Balanced Line Feeds

[Ernie Zingleman]

Clark,

I'm sure you know that there are a lot of coaxial remote switches.  I've not
seen one for balanced feeders.  

It would not be too difficult to build one out of a pair of SPDT vacuum
relays.  Alternatively, you could use a pair of remote coaxial switches and
switch them in tandem.  This would allow you to keep one antenna to be
completely isolated from the other.  Yes there would be a little bit of an
impedance bump in the switches and you would lose some signal there but I
still think it would work.

Ernie  KS4Q

-----Original Message-----
From: sedxc-bounces at contesting.com [mailto:sedxc-bounces at contesting.com] On
Behalf Of Clark Macaulay
Sent: Friday, January 25, 2008 12:00 PM
To: sedxc at contesting.com
Subject: [SEDXC] Need Parts To Build A Remote Switch for Balanced Line Feeds

In order to increase my DX covereage so I can get to Asia, I'm putting up a
second wire antenna: a doublet fed with balanced line.  I'm also converting
my G5RV from coax feed to ballanced line to reduce the losses on the WARC
bands (so it becomes a 102 ft doublet). Now I need to switch the lines to my
tuner and would like to do it with a remote switch so there is only one line
into the shack.  As near as I can tell, no one makes such a critter.  What
recommendations do you have about the type of relays and where to get them?
Power I run is typically QRP to 100w but I would like to have the capacity
to run up to 1KW.
   
  73 de Clark ke4rq
_______________________________________________
SEDXC mailing list
SEDXC at contesting.com
http://lists.contesting.com/mailman/listinfo/sedxc

No virus found in this incoming message.
Checked by AVG Free Edition. 
Version: 7.5.516 / Virus Database: 269.19.11/1242 - Release Date: 1/24/2008
8:32 PM
 

No virus found in this outgoing message.
Checked by AVG Free Edition. 
Version: 7.5.516 / Virus Database: 269.19.11/1242 - Release Date: 1/24/2008
8:32 PM