[TowerTalk] Relay for sloper element

[Dave Hachadorian]

I have the same setup to switch my half sloper between 80 and 
160.  I use a Jennings RF3A Vacuum Relay that a friend gave me. 
I get the 26 VDC for the coil from one of those little Radio 
Shack 12V 2.5A power supplies.  They have 26 VDC inside, ahead of 
the regulator, so I just brought it out on a pair of wires.


Dave Hachadorian, K6LL
Yuma, AZ


-----Original Message----- 
From: Gene Smar
Sent: Thursday, November 23, 2017 10:17 AM
To: towertalk at contesting.com
Subject: [TowerTalk] Relay for sloper element

TT:

     I want to be able to switch a piece of #14 house wire onto 
the far end
of a sloper wire I have for 75 M phone so I can operate lower in 
the band.
I'm thinking of adding a relay in a weather-resistant box at the 
sloper's
end insulator and continue with the extension wire beyond that.

     FYI:  The sloper wire runs from the 50 foot point on my 
tower to my
house roof where it is tied to an end insulator and thence to a 
PVC vent
pipe via a bungee cord.  The wire runs through tree limbs, hence 
my need for
a flexible connection.  I'm thinking I can mount the relay/box 
near the end
insulator and extend the additional wire further across the roof. 
I'm
thinking I can run 15 +/- VDC to it from the station supply in 
the shack via
RG-58 coax up and across the roof to the relay box.

     My question to this august group:  What relay (and supplier) 
would you
recommend for the job?

     In the alternative, can you point me to a good source of 
info on
designing traps for said application?  The trap would not require 
any DC for
switching but might take more "cypherin' " to get working.

     Many thanks and Happy Thanksgiving to all y'all.

73 de
Gene Smar  AD3F


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